59 results about "Balance test" patented technology

The invention relates to the technical field of dynamic balance testing of rotating machinery, and discloses a dynamic balance state testing system based on equipment operation data, which comprises a synchronous sampling module, a fundamental frequency vector analysis module and an influence coefficient self-adaptive calibration module, the synchronous sampling module collects key phase pulses and original vibration signals of the rotating equipment; a fundamental frequency vector analysis module extracts an instantaneous rotating speed and a real-time fundamental frequency vibration vector; the influence coefficient self-adaptive calibration module stores a weight matrix representing rotor supporting characteristics, monitors a rotating speed fluctuation variance, corrects the weight matrix according to complex deviation of a vibration vector when the variance exceeds a preset threshold value, solves a net unbalance vector of the controlled rotating equipment, and outputs the net unbalance vector. According to the method, the rotating speed micro fluctuation in the operation process is used as an excitation increment source, and the sensitivity model reflecting the rotor bearing characteristics is constructed, so that the dynamic balance test gets rid of the limitation of adding a physical test weight, and the online test requirement under the continuous working condition is met.

The invention belongs to the technical field of impeller detection, and provides an air floating type clamping tool and impeller dynamic balance testing device.The air floating type clamping tool comprises an outer fixing sleeve, a first air inlet connecting hole, a second air inlet connecting hole and a third air inlet connecting hole are formed in the outer fixing sleeve, and an inner mounting cylinder is fixedly mounted in the outer fixing sleeve; a wheel shaft sleeve is mounted in the inner mounting cylinder through an end cover and a locking pressing ring; an outer end face groove is formed in the side, away from the wheel shaft sleeve, of the end cover. The first air inlet connecting hole communicates with the outer end face groove through a first airflow channel. In a test state, the wheel shaft sleeve and the middle part of the wheel shaft of the impeller are encircled to form a middle cavity, and the second air inlet connecting hole is communicated with the middle cavity through a second airflow channel; a plurality of blowing holes are formed in the inner walls of the top and the bottom of the wheel shaft sleeve. The third air inlet connecting hole communicates with the blowing holes through a third airflow channel. According to the invention, the dynamic balance test precision of the impeller is higher, secondary damage possibly caused to the impeller in the test process is avoided, and the test efficiency of the impeller is greatly improved.

The application discloses a motor rotor dynamic balance test system and method, comprising: arranging an acceleration sensor and an encoder, collecting vibration, angular position signal and current signal; establishing a multi-resonance phase-locked loop, outputting a de-bouncing phase and an angular position sequence, forming a phase reference; angular domain resampling and sparse harmonic decomposition, extracting complex amplitude and generating observation and working condition data; complex value reversible flow model reverse mapping, combining constraint processing, outputting target counterweight instruction; target counterweight instruction injection virtual correction, calculating vibration decline rate, dynamically optimizing counterweight instruction; physical correction and recheck, archiving working condition label, counterweight instruction and recheck result after passing. The application realizes intelligent detection and correction of motor rotor dynamic balance by fusing multi-resonance phase-locked loop and complex value reversible flow model, and is free of test weight, high in precision and capable of multi-working condition.

The application discloses a positioning clamp for testing a generator set, belongs to the technical field of dynamic balance measurement testing, and is provided with a production conveying belt and a switching conveying belt. A dynamic balance testing structure is arranged below the switching conveying belt. The dynamic balance testing structure comprises a testing table. Opposite surfaces of the testing table are provided with vertical guide rails. Surfaces of the vertical guide rails are provided with horizontal plates. Positioning rotary shafts are arranged on both sides of the center of the upper surfaces of the horizontal plates. Clamping rods are fixedly connected to the surfaces of the positioning rotary shafts. The testing table is further provided with positioning plates. The positioning plates are rotated to drive the horizontal plates to move towards each other. The generator set positioning swing can be above the center of the testing table. Balance assemblies are arranged on the lower surfaces of the four corners of the testing table. The balance assemblies comprise bearing bodies. The bearing bodies are swung up and down to drive the pressure changes of positive pressure sensors and side pressure sensors. The dynamic balance of the four corners of the generator set can be tested at the same time. The continuity and stability of the dynamic balance testing work are improved. The dynamic balance testing effect is improved.

The application relates to an assembling method of a dynamic balance test tool and the dynamic balance test tool. The assembling method of the dynamic balance test tool comprises the following steps: processing initial raw materials to form a balance mandrel; the balance mandrel is gradually increased in outer diameter from one end to the other end, so that small-diameter ends and large-diameter ends are formed at the two ends of the balance mandrel; a part to be tested is provided, and the part to be tested is formed with a through hole; the small-diameter end of the balance mandrel is inserted into the through hole, the small-diameter end is in clearance fit with the through hole of the part to be tested, the balance mandrel is guided without resistance; an insertion force F is continuously applied in the axial direction, so that the surface of the balance mandrel is attached to part of the through hole, and the axial displacement of the balance mandrel is prevented; and the overall vibration amplitude of the balance mandrel and the part to be tested is detected to verify the stability of the assembly between the balance mandrel and the part to be tested and the absence of additional unbalance.

The utility model provides a rapid clamping device for a dynamic balance test of a motor rotor, which comprises a host, a driving mechanism, a pair of V-shaped roller carriers and a pressing frame positioned above the pair of V-shaped roller carriers are arranged on the host, a transmission belt is arranged on the pressing frame, and the transmission belt performs transmission through the driving mechanism; a rotor is placed on the pair of V-shaped roller carriers, and a first shaft rod and a second shaft rod are arranged at the two ends of the rotor respectively; the device further comprises a clamping assembly. According to the utility model, through the arrangement of the clamping assembly, on one hand, the auxiliary wheel can support the longer first shaft rod, so that the rotation is more stable during the balance test, and on the other hand, when the auxiliary wheel supports the first shaft rod, the auxiliary wheel is pressed down by weight, so that the supporting rod at the bottom end of the fixed seat goes deep into the fixed block; therefore, the purpose of rapidly clamping the two ends of the rotor is achieved, an operator does not need to manually adjust the positions of the two abutting rods during taking and placing, and the working efficiency is greatly improved.

The invention discloses a dynamic balance test machine for motor production, and the machine is provided with a clamping part, the inner side of a connection spring fixedly connected to the inner side of a connection block is fixedly connected with an elastic clamping plate, and the bottom of an arc-shaped adjustment frame fixedly connected to the two sides of the connection block is slidably connected with a threaded block. The outer wall of a threaded rod in threaded connection with a threaded hole of the threaded block is fixedly connected with a rotating block, the threaded block is moved to drive a limiting spring fixedly connected to the inner side to move, an elastic clamping plate in contact connection with the inner side of the limiting spring is deformed by the compressed limiting spring, and a test piece is limited towards the inner side; the threaded block in threaded connection is locked and limited, and the deformed elastic clamping plate clamps and limits the test piece on the inner side, so that the test piece can be conveniently tested according to different specifications; when the test piece is tested, the baffle is pulled to move upwards, and the arranged baffle prevents the rotating test piece from being separated from the clamping component in the testing process to accidentally injure an operator.

The present invention relates to the technical field of dynamic balancing machines. Disclosed is a weighing mechanism of a vertical dynamic balancing machine, comprising a base, a support frame, a horizontal locating plate, a mounting base, and support plates, wherein adjustment blocks are fixedly mounted on four edge sides of the mounting base; the horizontal locating plate is provided as a square-loop structure; the mounting base is located on the inner side of the horizontal locating plate, and the mounting base is not in contact with the horizontal locating plate; the four adjustment blocks are all located below the horizontal locating plate. The present invention achieves rapid measurement of the weight of a part to be measured to facilitate a weighting or de-weighting operation on a workpiece. When dynamic balance testing is continued after weighing has been completed, the mounting base can be jacked up and adjusted to a horizontal state by using jacking assemblies in conjunction with the adjustment blocks, so that a dynamic balance testing mechanism on the mounting base can be kept horizontal, thereby ensuring the precision of dynamic balance detection. Moreover, the adjustment blocks can be fixed by means of pressing rings and the horizontal locating plate, so that the mounting base is kept stable.

1. Name of the product in this design: Drive spindle. 2. Purpose of this design: This design is used to drive the workpiece to be tested to rotate in a balance testing machine. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The application discloses a rotor dynamic balance testing device with a self-clamping function, and relates to the technical field of rotor dynamic balance detection equipment. The rotor dynamic balance testing device comprises a supporting frame, a testing table is bolted to the upper end of the supporting frame, an automatic clamping loading frame mechanism is arranged at one corner of the upper end of the testing table, an automatic clamping testing frame mechanism is arranged at the upper end of the testing table, and a rotating plate is arranged above the testing table. A first cylinder is arranged at one side of the bottom end of the testing table, and a first motor is bolted to the side of the rotating plate. When the rotor dynamic balance testing device is used, the two ends of the rotor are penetrated into the inside of the clamping groove, and the clamping groove is matched with the pressing cover strip, the pressing cover block and the connecting seat, so that the pressing cover block performs pressing cover work on the two ends of the rotor, the stability of the rotor during detection is maintained, and the detection result is prevented from being affected by the shaking of the rotor during detection.

The invention discloses a cylindrical roller bearing dynamic balance test bench and a test method, and relates to the technical field of bearing dynamic balance test, the cylindrical roller bearing dynamic balance test bench comprises a test bench, a connection positioning assembly, a long shaft system, a vibration test assembly and a radial test assembly, a long shaft system is installed at the end, away from the transmission shaft, of the connection positioning assembly, and a vibration testing assembly and a radial testing assembly are arranged between the installation support and the second vertical plate. The long shaft system and the connection positioning assembly are matched with rotation of the motor to carry out dynamic balance testing, vibration signals and vibration amplitude of the cylindrical roller bearing are amplified through the long shaft system, and signal collection and data analysis are carried out on torsional vibration, axial vibration and radial vibration of the cylindrical roller bearing in the rotation process.

The utility model discloses a balance testing device, and relates to the technical field of balance testing. The balance testing device comprises a detection assembly and a rotation driving assembly, the detection assembly is provided with a detection position, and the rotation driving assembly comprises a rotation driving part movably arranged in the direction close to or away from the detection position and a first driving module used for driving the rotation driving part to move. According to the balance test device, the driving part on the balance test device can be far away from the detection position when the manipulator performs feeding and discharging actions, so that the driving part is prevented from interfering with the stroke of the manipulator, and the feeding and discharging efficiency of the rotary body is improved.

The application discloses a kind of single-end support motor rotor's balancing test device.Rotor is supported clamped on floating mechanism, and air cylinder assembly is installed on floating mechanism, and sensor is arranged on the side of floating mechanism.In floating mechanism, floating platform bottom plate is elastically supported and installed on spring sheet mounting plate through spring sheet, movable bearing mounting block is horizontally slidably installed on floating platform bottom plate, air cylinder assembly is installed on the side of floating platform bottom plate, air cylinder assembly is connected with movable bearing mounting block, sensor is installed on spring sheet mounting plate, the bottom surface of floating platform bottom plate is connected with sensor, first bearing piece is installed on floating platform bottom plate and movable bearing mounting block, and second bearing piece is also installed on floating platform bottom plate.The device of the application simplifies mechanical structure, and only one set of shaft end limiting bearing can play the role of rotor axial support, and movable bearing block driven by air cylinder is used to realize stable clamping, so that the measurement accuracy is improved, the measurement error is reduced, and the cost is saved.

The application relates to the technical field of vibration detection, in particular to a static balance inspection vibration detector for a concrete finishing machine compression roller, which comprises two groups of guide pieces, each of which is provided with two No. 2 roller wheels; an energy storage assembly is connected with the No. 2 roller wheels, a cylindrical spring is arranged in the energy storage assembly, and a pulley is arranged at the end of the energy storage assembly far from the No. 2 roller wheels; a traction assembly is connected with the energy storage assembly, and when the traction assembly drives the energy storage assembly to move towards the concrete finishing machine compression roller, the energy storage assembly can slide in the No. 2 inclined groove arranged on the guide piece; a pushing structure is connected with the energy storage assembly, the pushing structure cooperates with the pulley, can release one end of the cylindrical spring when the energy storage assembly moves towards the concrete finishing machine compression roller, can clamp the concrete finishing machine compression roller with different diameters, and prevents the swing of the concrete finishing machine compression roller when the clamping force is too large to inhibit the rotation of the concrete finishing machine compression roller.

The invention relates to the technical field of balance testing of structural components, in particular to a digitization-based bearing stability evaluation method for a spandrel girder structure, which specifically comprises the following steps of: constructing a virtual reality feedback model; performing internal micro-damage analysis caused by physical continuity attenuation, extracting an internal recessive stripping index obtained through the internal micro-damage analysis, and importing balancing fluctuation data of the bilaterally symmetrical support obtained by combining real-time weight measurement counterforce into oblique displacement offset plug evaluation analysis to perform bearing stability proofreading; evaluating the deterioration condition of the connection rigidity of the interface structure; and according to the oblique displacement offset plug index and the structural interface stability evaluation index, carrying out joint anomaly judgment to obtain a comprehensive collapse pre-estimation index and carrying out risk alarm. According to the method, the problem that in the prior art, before visible damage or remarkable deformation occurs to the bearing beam with the component stress specificity, an effective technical means capable of early warning sudden instability (such as oblique section shear damage) caused by internal damage accumulation of the bearing beam in advance is lacked is solved.

The invention relates to the technical field of tire balance test benches, in particular to a multi-working-condition tire balance test bench which comprises a supporting column and a first base, the supporting column is rotationally installed on the first base, and a tire is installed at the front end of the supporting column; the device further comprises a driving device, a pressure device, a collection sensor, a second base, a barrel and an air pump, the collection sensor is installed between the first base and the supporting column, the first base is installed on the driving device, and the driving device is used for providing power for rotation of the supporting column and driving the first base to move and adjust. The cylinder is rotationally mounted on the second base, the air pump is mounted on the outer side wall of the second base, and the power input end of the air pump is concentrically connected with the cylinder; a balance test is carried out on a tire under load rotation, the linkage effect that the larger the tire rotation load is, the larger the extrusion force on the tire is, the real effect of the balance test for simulating extrusion deformation of the tire under the actual load bearing working condition is improved, and the comprehensiveness of the tire multi-working-condition test is improved.

This invention discloses a laser marking device for impeller imbalance, relating to the field of rotor dynamic balancing technology. The invention aims to solve the problems of visual deviation and inaccurate positioning caused by human factors in existing impeller balancing tests that rely on manual visual marking of the center of gravity. The device includes a balancing test apparatus and a laser device independently of the impeller's rotation axis. The laser device includes a fixed base and a testing device, which slides laterally on a slide rail of the fixed base via pulleys. A multi-degree-of-freedom adjustment mechanism, including a clamping plate, grippers, a shaft, a connecting rod, and a pin, is mounted on the fixed platform of the testing device. The laser emitting device is installed at the end of the connecting rod. This invention achieves non-contact laser-based point marking, eliminating errors caused by manual visual marking, effectively improving the accuracy of impeller imbalance location marking, and enhancing the efficiency of impeller weight reduction and correction while improving equipment operational safety.

1. Name of the product in this design: Balance Testing and Training Equipment (A9). 2. Purpose of this design: An auxiliary device for balance ability testing and training. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a long-shaft rotor dynamic balance testing and de-weighting all-in-one machine and method, and relates to the technical field of rotating machinery dynamic balance correction. The all-in-one machine comprises a machine table, a dynamic balance testing device, a weight removing device and a jacking mechanism. The dynamic balance testing device is provided with a belt driving mechanism capable of swinging and pressing down and a supporting mechanism with adjustable height and distance, and is used for driving and supporting the long-shaft rotor to rotate so as to complete a dynamic balance test. And the de-weight device is provided with a clamping mechanism for fixing the rotor and a drilling mechanism capable of accurately positioning, and is used for executing de-weight processing. The jacking mechanism is arranged between the testing device and the weight removing device and used for automatically transferring the rotor from the supporting mechanism to the clamping mechanism after testing is completed. By integrating testing and de-weighting functions and utilizing the jacking mechanism to realize automatic transfer between stations, the problems of strenuous carrying, low efficiency and non-uniform benchmark of the long-shaft rotor in the traditional separation process are solved, full-process automation is realized, and the production efficiency and the correction precision are remarkably improved.

The invention discloses an integrated balance testing device, and relates to the technical field of balance testing. An integrated balance testing device comprises: a clamping mechanism capable of clamping / loosening a rotating member; the driving mechanism is connected to the clamping mechanism and can drive the clamping mechanism to rotate; an angle adjusting mechanism; the angle adjusting mechanism comprises a mounting base, a bearing piece rotationally connected to the mounting base, a lifting assembly connected to the mounting base and used for driving the bearing piece to support the rotating piece, and a rotation driving assembly arranged on the mounting base and used for driving the bearing piece to rotate. According to the invention, angle position adjustment can be conveniently carried out on the rotating member.

The utility model discloses a static balance test tool for a rotating workpiece, which relates to the technical field of static balance detection equipment and comprises a base, a first supporting seat and a second supporting seat. A sliding groove is formed in the base, and T-shaped bolts corresponding to the sliding groove are arranged at the bottom of the first supporting seat and the bottom of the second supporting seat correspondingly; rotary supporting seats are arranged at the tops of the first supporting seat and the second supporting seat respectively, and rotary wheels are arranged on the rotary supporting seats respectively; the first supporting seat is further provided with a width adjusting mechanism. The width adjusting mechanism comprises a lead screw supporting seat, an adjusting lead screw and a lead screw nut, the lead screw supporting seat is fixedly connected with the base, the lead screw nut is fixedly connected to the first supporting seat, and the adjusting lead screw penetrates through the middle of the lead screw nut and is rotationally installed on the lead screw supporting seat. Therefore, according to the tool provided by the utility model, the distance between the first supporting seat and the second supporting seat can be adjusted, so that the installation is simplified, and the detection of various equipment is met.

The application discloses a high-speed motor rotor dynamic balance test platform, which comprises a base platform base and pusher one, pusher two, a driving unit support, a supporting unit support one, a supporting unit support two, a driving unit, a supporting unit one, a supporting unit two, a displacement measuring device and a rotating speed measuring device arranged on the base platform base respectively. The application adopts an electromagnetic bearing as the supporting unit of the rotor, and the electromagnetic force can be obtained according to the current of the electromagnetic bearing and the air gap of the stator and rotor. The non-contact design reduces mechanical loss, compared with the traditional dynamic balancing machine, the mechanical wear of the bearing does not need to be considered, and the safety performance under the high-speed state is improved.

The utility model discloses a flow velocity and flow meter for water balance testing, which comprises a detection device, a connecting line and a measuring device, the connecting line is mounted at the top of the detection device, the measuring device is mounted at the other end of the connecting line, the connecting line is mounted at the top of the detection device, a limiting ring is fixedly connected to the surface of the connecting line, and a rotating component is arranged at the top of the detection device. According to the flow velocity and flow meter for the water balance test, a connecting line is installed at the top of the detection device, a limiting ring is fixedly connected to the surface of the connecting line, meanwhile, a rotating assembly is arranged at the top of the detection device and comprises a side plate, a fixing frame and a shaft rod, the side plate is welded to the top of the detection device, and meanwhile the shaft rod is sleeved with the side plate; the first clamping ring and the second clamping ring are fixed, and then in the using process of the device, the first clamping ring and the second clamping ring can be used for providing the fixing effect for the connecting line, so that the connecting line is not prone to being separated from the detection device, and the stability is high in the using process.

The invention relates to the technical field of flow testing devices, and discloses a water balance flow testing device and a water balance testing method.The water balance flow testing device comprises a mechanical water meter and a threaded ring connected to the mechanical water meter in a threaded mode, the threaded ring is internally provided with a monitoring device, and the water balance flow testing device further comprises an installation part and a flow testing part, the number of the stabilizing parts is multiple, and the multiple stabilizing parts are all arranged on the monitoring device; the installation part comprises a limiting assembly, and the limiting assembly is installed on the mechanical water meter. By arranging the mounting part, the problems that in the using process of an existing flow testing device, impact force generated by pipeline vibration is difficult to buffer depending on hard connection of bolts, bolt loosening and buckle deformation can be caused by long-term vibration, thermal expansion and cold contraction of parts caused by temperature changes can further aggravate connecting gaps, and the service life of the flow testing device is prolonged are solved. Finally, the device shifts and falls off, and the relative position of the device and the water meter dial plate is directly influenced.

A rotor dynamic balance testing device comprises a machine table, a fixing frame, a transmission mechanism and a base. The fixing frame is arranged on the machine table and used for installing a rotor, and a detection unit is arranged on the fixing frame; the transmission mechanism comprises a swing arm, a first rotating wheel, a second rotating wheel and a belt, the first rotating wheel and the second rotating wheel are rotatably arranged at the two ends of the swing arm respectively, and the belt is wound around the first rotating wheel and the second rotating wheel; the base is arranged on the machine table and is provided with a first driving part and a second driving part; the swing arm is hinged to the base and corresponds to the rotor; the first driving part is in driving connection with the swing arm; the second driving part is in driving connection with the second runner; during use, a to-be-tested rotor is installed on the fixing frame, then the first driving part is started to drive the belt to abut against the rotor, then the second driving part is started to drive the belt to move to drive the rotor to rotate, and the detection unit detects the vibration frequency of the rotor. And after the test is finished, closing the second driving part and driving the belt to be away from the rotor through the first driving part so as to replace a new rotor for test.

The utility model provides a robot dynamic balance test device. The robot dynamic balance test device comprises a rack, a conveying device, a first lifting device, a second lifting device and a third lifting device. One end of the first lifting device is rotationally connected to the rack, the other end of the first lifting device is rotationally connected to the conveying device, one end of the second lifting device is rotationally connected to the rack, the other end of the second lifting device is rotationally connected to the conveying device, and one end of the third lifting device is rotationally connected to the rack. The other end of the third lifting device is rotationally connected to the conveying device, and the first lifting device, the second lifting device and the third lifting device are evenly arranged on the rack at intervals in a circular shape. Compared with an existing dynamic balance test method, the robot dynamic balance test equipment has the advantages that the robot does not need to be put into a real environment, related risk-related tests can be completed in a production workshop, the test is more convenient, and the robot dynamic balance test equipment can be suitable for large-scale production, so that the production efficiency is improved.

The utility model relates to a transmission shaft dynamic balance testing device comprising a pedestal, the pedestal is provided with a dynamic balance tester, a left clamping jaw device and a right clamping jaw device, and the pedestal is provided with a translation device used for driving the right clamping jaw device to move left and right; the clamping jaw device comprises a bearing seat and a base, the base is rotationally connected to the bearing seat through a bearing, a plurality of clamping jaw mechanisms which are annularly arranged are arranged on one side of the base in the circumferential direction, a containing block is arranged in the center of the base, a containing groove is formed in the center of the end face of the containing block, and the containing groove is used for receiving the shaft end of a transmission shaft. A clamping jaw driving part is arranged on the other side of the base, a coupler is fixed on the clamping jaw driving part, and the coupler located on the left side is connected with a motor rotating shaft of the dynamic balance tester; the clamping device has the advantages that the clamping jaws can clamp the ends of the middle regular-size section, the long and thin parts at the two ends can be inserted into the containing grooves, and clamping and fixing of the transmission shaft with the two long and thin ends and the middle regular-size section are achieved.

The invention relates to an assembly method of a dynamic balance test tool and the dynamic balance test tool thereof, and the assembly method of the dynamic balance test tool comprises the steps: machining an initial raw material to form a balance mandrel; wherein the outer diameter of the balance mandrel is gradually increased from one end to the other end, so that the two ends of the balance mandrel respectively form a small-diameter end and a large-diameter end; providing a to-be-tested part, wherein a through hole is formed in the to-be-tested part; the small-diameter end of the balance mandrel is inserted into the through hole, and the small-diameter end is in clearance fit with the through hole of the part to be tested, so that the balance mandrel is guided in without resistance; an insertion force F is continuously applied in the axial direction, so that the surface of the balance mandrel is attached to the part of the through hole, and axial displacement of the balance mandrel is stopped; and detecting the overall vibration amplitude of the balance mandrel and the to-be-tested part so as to verify the assembly stability and no additional unbalance between the balance mandrel and the to-be-tested part.

The utility model relates to the technical field of rotary body dynamic balance testing devices, and discloses a motor rotor dynamic balance detection tool, which comprises a rack, conduction plates and a motor box, one ends, far away from each other, of the plurality of conduction plates are fixedly connected with adjusting boxes, the top of each adjusting box is fixedly connected with a box cover, the top of each box cover is provided with a T-shaped groove, and the T-shaped groove is fixedly connected with the motor box. A connecting rod is slidably connected to the inner wall of the T-shaped groove, a pushing handle is fixedly connected to the top end of the connecting rod, a metal plate is fixedly connected to the bottom end of the connecting rod, and threaded rods are in threaded connection with the ends, away from each other, of the multiple adjusting boxes. The metal plates are inserted into the T-shaped grooves, the handles are pushed to the limit in the groove direction after insertion, the number of the metal plates is flexibly adjusted according to the rigidity requirement, after placement is completed, the rotating valves on the screw rods on one side of the adjusting box are twisted, the threaded rods are driven to enable the pressing and fixing plates to extrude the metal plates, and custom adjustment of the rigidity of the tool is achieved. Operation is simple, and rapid maintenance can be achieved.

The utility model relates to fan blade balance test technical field, and disclose fan blade balance test device, including test mechanism body and set up at its surface fixed turntable, still include: set up at test mechanism body both sides electric push rod, the output shaft of electric push rod is provided with the connecting shell, the utility model discloses the setting of blocking shell can effectively prevent the situation that the surrounding wind blows to fixed turnplate, thereby reduced the interference of external factors, improved test accuracy, under the action of support block, can guide and rectification to the wind of entering blocking shell, make the wind evenly distribute around the fan blade, reduced the situation of airflow turbulence, under the action of quick -release mechanism and limiting mechanism, conveniently dismounting and limiting blocking shell and support block, thereby effectively reduced the operation time and labor intensity of staff, improved the dismounting efficiency, solved the problem that the existing device is influenced by external factors when using is bigger and is inconvenient to dismount.