28results about How to "Test security" patented technology

The invention provides a reliability testing device for an in-cylinder direct injection hydrogen injector, and relates to the technical field of testing, and the reliability testing device for the in-cylinder direct injection hydrogen injector comprises a gas supply system module which is used for providing a testing gas source for a tested injector; the outlet end of the gas supply system module is communicated with the inlet end of the pressure regulating system module, the outlet end of the pressure regulating system module is communicated with the inlet end of the tested ejector, and the pressure regulating system module is used for regulating the gas pressure of the inlet end of the tested ejector; the test system module comprises a test fixture and a test module, and the tested ejector is arranged in the test fixture; and the environment simulation module is communicated with the cavity in the test fixture, the environment simulation module is used for simulating specific environment characteristics of the tested ejector during injection, and the test module is used for testing the injection condition of the tested ejector under the specific environment characteristics.

The present application relates to a kind of slurry shield slurry chamber pressure control experimental system and method, slurry shield slurry chamber pressure control experimental system physical execution layer includes air cushion chamber, pressure maintaining system and circulation system, pressure maintaining system is used to adjust air cushion chamber pressure, and circulation system is adjusted by adjusting slurry amount, slurry amount adjustment air cushion chamber liquid level;Upper computer monitoring layer includes virtual slurry chamber module and slurry chamber pressure control module, virtual slurry chamber module simulates the change of virtual slurry chamber pressure, and slurry chamber pressure control module is used to carry the slurry chamber pressure control algorithm to be tested.The present application constructs experimental system by "real and virtual combination", avoids the cost and safety risk existing in field experiment, guarantees that a large number of, sufficient, even destructive algorithm test can be safely carried out under the condition of limited laboratory;It can solve the technical problems that new type control algorithm with slurry chamber pressure as direct control target lacks sufficient, reliable test verification platform.

The utility model discloses a hammerhead fixing device for an automobile steering knuckle drop hammer test, which relates to the technical field of automobile steering knuckle tests and comprises a base, the top of the base is connected with a top plate through a sliding rod and a support, and a first sliding plate and a second sliding plate are respectively slidably mounted on the sliding rod. A rotating shaft is rotatably mounted between mounting frames fixedly mounted on the front side and the rear side of the first sliding plate, worms are arranged at the two ends of the rotating shaft and are in meshed connection with worm wheels, the worm wheels are fixed to the top of a rotating rod, the rotating rod is rotatably mounted on the first sliding plate, a limiting plate is fixedly mounted at the bottom of the rotating rod, and an electromagnet is mounted at the bottom of the first sliding plate; a mechanical structure composed of the rotating shaft, the worm, the worm gear, the rotating rod, the limiting plate and the like is used for auxiliary fixing. Even if the electromagnet loses magnetic force due to power failure or power system failure, the limiting plate can still limit accidental falling of the impact head from the mechanical level, the double-guarantee effect is achieved, and the risk of accidental falling of the impact head is greatly reduced.

The invention provides a rod control power supply cabinet and a method for simulating control instruction issuing of a rod control system. The rod control power supply cabinet comprises a simulation control system and a programmable logic controller module. The simulation control system comprises an operation rod speed setting module and an instruction signal issuing module. And the running rod speed setting module is used for receiving preset control rod running speeds input or selected by a user under different rod moving instructions and transmitting the preset control rod running speeds to the programmable logic controller module. The instruction signal issuing module is used for being electrically connected with a rod control case and simulating a nuclear power plant logic cabinet to issue different rod moving instructions to the programmable logic controller module. And the programmable logic controller module is used for sending a time sequence instruction corresponding to the rod moving instruction to the rod control case according to the preset control rod operation speed and the rod moving instruction. According to the application, the plurality of modules for simulating the issuing of the control instruction of the rod control system are integrated in the rod control power supply cabinet, so that the problems of low test efficiency and poor reliability existing in the existing process of testing the performance of the rod control case are solved.

The utility model discloses an A2L hot surface ignition temperature test special device, which comprises a test box and a spraying type pipe arranged in the test box, the surface of one end of the spraying type pipe is fixedly connected with a refrigerant tank with a valve, one side of the refrigerant tank is provided with the valve which is communicated with the interior of the refrigerant tank through the spraying type pipe, and the other side of the refrigerant tank is provided with the spraying type pipe. A glass barrel is arranged on the peripheral side, close to one end, of the spraying type pipe, a metal disc is fixedly installed on the surface of the lower end of the glass barrel, a thermocouple is fixedly installed on the surface of one side of the metal disc, a heat insulation pad is fixedly connected to the peripheral side surface of the metal disc, and one side, extending to the heat insulation pad, of one end of the metal disc is fixedly connected with a heating plate; according to the utility model, through the arrangement of the spraying type pipe, stable conveying and controlled release of the refrigerant can be realized, the refrigerant can be accurately sprayed on the metal disc, and the refrigerant is fully contacted with the hot surface, so that the ignition temperature of the hot surface is tested, and the effect of accurate test result is achieved.

The utility model discloses an underground turbine generator testboard for a high-temperature wireless inclinometer while drilling, which comprises a tool car, a bearing plate arranged on the tool car, and a driving motor, a clamping device, a rotating speed sensor, a motor frequency converter and a three-phase multifunctional ammeter which are arranged on the bearing plate, the clamping device is composed of a coupler, a limiting ring, an outer cylinder and a locking ring, the underground turbine generator is fixedly arranged in the outer cylinder, the turbine generating end of the underground turbine generator is fixedly arranged on the inner wall of the outer cylinder through the limiting ring, and the output end of the underground turbine generator is arranged outside the outer cylinder and fixedly matched with the outer cylinder through the locking ring. When the underground turbine generator is tested, the driving motor does not directly drive a turbine of the underground turbine generator, but drives the main shaft in the underground turbine generator to rotate through magnetic coupling, so that the underground turbine generator testing device is safer and more reliable.

The present invention relates to a dynamic load test device. The present invention comprises a lower bearing assembly, an intermediate bearing body, an upper bearing assembly, a pull rod, and a track plate. The lower bearing assembly is arranged with a passively rotating rotating wheel, the upper bearing assembly is provided with a downward pressing loading cylinder, the intermediate bearing body supports and connects the lower bearing assembly and the upper bearing assembly, the pull rod connects the lower bearing assembly, the intermediate bearing body, and the upper bearing assembly, the upper bearing assembly is above the lower bearing assembly and a space cavity for accommodating a heavy-load drive device is provided between the two, the track plate is placed on the rotating wheel, and the track plate has a space cavity for free entry and exit. The present invention can obtain the following technical effects: the test device occupies a small area, can carry out high-load loading tests, the loading force is steplessly adjustable, the test device has a strong load-bearing capacity, can simulate the real heavy-load working condition adjustment, and the test function is powerful and stable.

The invention belongs to the field of metallogy and heat treatment, and relates to a martensite hot work die steel austenite grain size detection method. The method comprises the following specific steps: (1) primary sample preparation; (2) sample heat treatment; (3) secondary sample preparation; (4) corroding; and (5) taking a metallograph and grading the grain size. Compared with an existing method for detecting other grain sizes of the medium-carbon medium-alloy martensitic hot work die steel, the method has the advantages that an oxidation method, a corrosion method and a metallographic method are comprehensively applied, so that the test process is more environment-friendly, convenient and reliable; the problems that in the prior art, the austenite grain size of the martensite type hot work die steel is difficult to detect, the grain boundary obtained through a single oxidation method is prone to being abraded off, and the grain boundary is not clear in appearance are solved, the austenite grain size is effectively graded more accurately and reliably, and therefore the objective experiment result is truly reflected, and the test efficiency is improved. And an effective reference is provided for subsequent experiment detection and engineering application evaluation.

The utility model belongs to electrical detection technical field discloses a kind of insulation resistance rapid testing device, it includes box and handle cap, button switch, banana socket, connector and small brush shape switch installed on it;Handle cap is connected together with small brush shape switch, handle cap is installed to the outside of box, and small brush shape switch is installed to the inside of box;Button switch is installed to the outside of box, for switching small brush shape switch;Banana socket is installed to the outside of box, and it is insulation table needle insertion end;Connector is installed to the outside of box, and is connected with the measured product test end connection.The utility model is connected together by box handle cap, button switch, banana socket, connector and small brush shape switch, connect each terminal by wire according to circuit schematic diagram, after insulation table and measured product are connected with insulation resistance testing device, the test of insulation resistance can be realized quickly, accurately and safely, it is simple and safe to operate, and it can be widely applied to the insulation resistance test of various electrical products.

The multifunctional blade battery testing tool comprises a conductive element, a positive tab, a negative tab, a base plate and a size adjusting device, the base plates are arranged up and down; the two ends of the size adjusting device are fixed to the upper base plate and the lower base plate respectively and used for adjusting the distance between the two base plates. The conductive element is arranged on the base plate and is respectively connected with the positive tab and the negative tab; the conductive element is used for being electrically connected with a positive pole and a negative pole of a blade battery to be tested; and the positive tab and the negative tab are used for being connected with a clip type test line so as to test the electrical performance of the blade battery. According to the tool, the electric performance of the blade battery can be tested safely and conveniently by using the clamp type test line, the risk of welding a tab is avoided, and the tool can adapt to various blade battery cell sizes.

The utility model relates to electronic component testing equipment technical field especially a general diode test seat, including base, upper cover, at least two claw type elastic probe and connecting assembly, the base is along its length direction and is set up through type bearing groove, the both ends of bearing groove length direction are coaxial cylindrical surface end wall, the upper cover is along its length direction and is set up through type cover groove, and the both ends of cover groove length direction are the arc end wall of coaxial with bearing groove end wall, the upper cover is through connecting assembly and covers on the base, makes bearing groove and cover groove position coincidence and forms the restraint cavity of diode middle part limit, claw type elastic probe position corresponds with the restraint cavity position and claw type elastic probe part extends in the outside of base and upper cover, can improve single equipment test containing capacity through the utility model, makes the test efficiency greatly improve.

The invention relates to the field of aerial environment simulation test equipment for aircraft engines, and discloses a flexible connection structure of a large-size thin-walled exhaust diffuser, comprising an inner cylinder, an outer cylinder, and a first water guide plate, wherein the inner cylinder comprises a straight section inner shell and a conical section inner shell arranged in sequence along an airflow direction, and the small-diameter end of the conical section inner shell is smoothly connected to the outlet end of the straight section inner shell; a first flexible connection component is used to connect a connection plate and a straight section outer shell, and the first flexible connection component is fixedly connected to the first water guide plate, the first flexible connection component can not only absorb the axial thermal displacement difference between the straight section and the conical section of the inner cylinder and the outer cylinder, but also because the first water guide plate is fixedly connected to the first flexible connection component, the higher thermal deformation of the straight section inner shell is transmitted to the first flexible connection component, so as to absorb the radial thermal displacement difference between the straight section inner shell and the straight section outer shell of the exhaust diffuser, thereby facilitating the coordination of the thermal deformation of the inner cylinder and the outer cylinder of the exhaust diffuser, and ensuring the safety of the test.

This application relates to the field of high-temperature environment simulation testing technology, specifically, to a high-temperature performance testing device for large workpieces. The device includes a test chamber, a heating system, a temperature control system, a dehumidification circulation system, a workpiece placement structure, a grooved track, and a control cabinet. The control cabinet is located outside the test chamber; the heating system is located on the inner walls of both sides of the test chamber and connected to the control cabinet; the temperature control system is located inside the test chamber and connected to the control cabinet; the dehumidification circulation system is located on the outer wall of the test chamber and connected to the control cabinet; the grooved track is located on the bottom plate inside the test chamber; and the workpiece placement structure is located in the center of the test chamber and slides on the grooved track via directional wheels. This application can meet the need for simultaneous testing of multiple large workpieces, is suitable for high-temperature performance testing of large workpieces, and features a dehumidification circulation system that efficiently dehumidifies and dissipates heat to maintain a stable testing environment.

The invention discloses a fire resistance test structure of a steel pipe gallery, which comprises a heating furnace body, a hearth is concavely arranged at the top of the heating furnace body, a heating device is arranged in the hearth, a loading test box communicated up and down is arranged at the top of the heating furnace body, and the loading test box is arranged and fixed at the top of the heating furnace body. An arched pipe gallery top part is arranged in the loading test box, the two ends of the pipe gallery top part are supported and fixed to the two sides of the top of the heating furnace body, the pipe gallery top part is located above the heating device, and the side edges of the two sides of the pipe gallery top part abut against the inner wall of the loading test box correspondingly; and a soil filling layer covers the loading test box and is positioned above the pipe gallery top part. The device is simple in structure and convenient to use, fire resistance testing of the pipe gallery top part under the action of loads of different sizes and positions can be achieved, the testing result is accurate, and the testing process is safe and reliable.

The invention discloses a target object for an intelligent network connection automobile identification test and a test method thereof, the target object comprises a vehicle chassis assembly, a warehouse assembly, a cargo assembly and a support assembly, the warehouse assembly and the vehicle chassis assembly are fixed on the support assembly, the cargo assembly is placed in the warehouse assembly, and one end of the cargo assembly extends out of the warehouse assembly; a reflector is arranged on the vehicle chassis assembly, and the reflector is used for reflecting a signal transmitted by a test vehicle; rollers are arranged on the supporting assembly, located on one side of the bottom face of the supporting assembly and used for enabling the supporting assembly to move. A stop block is further arranged on the supporting assembly, located on the other side of the bottom face of the supporting assembly and used for increasing the friction force between the supporting assembly and the ground. One end of the cargo assembly extends out of the warehouse assembly to form a target object for loading super-long cargos, and the reflector enables the test vehicle to receive a reflection signal from the target object; the rollers simulate the movement of a real vehicle; the stopping block increases friction between the supporting assembly and the ground, so that the moving supporting assembly stops moving.

This utility model discloses an invasive thermal resistance tester for diving suit fabrics, relating to the field of fabric performance testing technology. It includes a base, a housing, a lifting mechanism, a connecting assembly, a testing mechanism, and a sample container. The base has a mounting groove on its top and a pressure regulating valve on its outer wall. The housing is mounted on the base, with a display screen and control buttons on its front wall. The lifting mechanism includes a cylinder assembly, a drive assembly, and a lifting platform. The connecting assembly is mounted on the bottom of the lifting platform and consists of an upper connecting plate and a U-shaped placement hook fixed to the center of its bottom. The testing mechanism is placed in the mounting groove and includes a test cylinder assembly, a pressure regulating head, a heating coil, and a water inlet. The sample container is suspended from the U-shaped placement hook, and the lifting mechanism drives it to extend into the test cylinder assembly, enabling accurate measurement of the thermal resistance performance of the diving suit fabric. This utility model has a reasonable structure, can simulate a real underwater environment, accurately measure the thermal resistance of diving suit fabrics, and provide reliable data for diving suit research and development.

The utility model discloses a kind of oil cylinder test tool, including test base, closed ring is equipped with test side wall on the test base, test side wall and the test base between form the oil cylinder clamping groove cavity of notch upwards, cylinder tail clamping fixture fixedly connected on the test base is equipped in oil cylinder clamping groove cavity, cylinder head clamping fixture is slidably connected on test base, cylinder head clamping fixture is made close to or far from the direction of motion of cylinder tail clamping fixture;Linear guide rail is equipped on the test base, the cylinder head clamping fixture includes linear slider slidably connected on linear guide rail, linear slider is equipped with the cylinder head clamping plate extending upwards, first side hole is opened on the cylinder head clamping plate, and first pin shaft is inserted in first side hole and can be pulled out.The test tool has the characteristics of strong speciality, safe and reliable use, overall function is perfect, and practicality is strong.

The invention provides high-temperature high-speed erosion test equipment which comprises a sand supply mechanism, a sand blasting gun, a temperature control system and a test device, a material tank of the sand supply mechanism is arranged on the upper portion of a frame, a sand supply pipe is arranged in the middle of the frame, the sand blasting gun is connected with the sand supply pipe and vertically arranged in the frame, and a sample clamp is arranged below the sand blasting gun and located in the frame. The temperature control system is used for heating the erosion fluid and the workpiece to the corresponding target temperature, and sand supplied through the sand supply mechanism enters the sand supply pipe and the sand blasting gun and is vertically and downwards eroded on the workpiece after being heated and accelerated. The high-temperature and high-speed erosion test equipment disclosed by the invention not only can realize a high-temperature and high-speed erosion function, but also can control a trace amount of sand grains to be accurately and smoothly fed, can quickly realize linear erosion, can accurately control the consistency of a linear erosion area, and can smoothly, quickly and safely carry out an erosion fluid test in a narrow space.

The invention discloses a small-amplitude reciprocating peeling test device for crushed corn ear kernels, and aims to solve the problem that the relationship among corn kernel peeling, external force application, swing amplitude and swing times in the threshing process of a reciprocating small-load threshing device cannot be tested in the prior art. The device comprises a clamping assembly, a supporting power assembly and a base assembly, and can be fixed on a universal testing machine for accurate testing. According to the device, an eccentric shaft ejector rod mechanism and a reset spring are adopted for achieving reciprocating motion of the clamping assembly, the displacement of the reciprocating motion can be changed by replacing eccentric shafts with different eccentric distances, and meanwhile the clamping assembly can conduct longitudinal and transverse translation and horizontal rotation. And displacement and rotating speed sensors are installed, so that data can be accurately recorded. The device can be used for exploring the relationship between influence factors in the corn kernel peeling process, and is beneficial to subsequent parameter optimization and structural improvement of the reciprocating small-load threshing test bed.

The invention belongs to the technical field of ABS adhesion coefficient utilization rate measurement, and particularly relates to an auxiliary measuring device and method for the ABS adhesion coefficient utilization rate of an automobile, the auxiliary measuring device comprises a brake pipeline, the input end is connected with a brake medium storage tank, and the output end is connected with a brake on a wheel through a brake cylinder; the delivery pump is arranged between the brake medium storage tank and the brake cylinder and is used for pumping the brake medium and transmitting the brake medium to the brake through the brake cylinder; the pressure sensor is used for monitoring the pressure of the brake pipeline; the main controller is connected with the pressure sensor and used for receiving a pressure signal, the main controller outputs a control signal and controls operation of the conveying pump, and the vehicle speed sensor transmits a vehicle speed signal; the conveying pump is controlled through the pressure feedback main controller, the braking state can be rapidly adjusted, and therefore the ABS adhesion coefficient utilization rate measuring device is used for measuring the ABS adhesion coefficient utilization rate.

The present invention relates to a method for designing a deep-sea pressure simulation device by mechanical pressurization, the method comprising the following steps: (S‑1) modeling: establishing a model of a deep-sea pressure simulation device in the simulation software ANSYS, the model comprising a pressure-resistant device, a support portion connected to the pressure-resistant device, and a base connected to the pressure-resistant device; (S‑2) gradual pressurization and topological optimization: on the model established in step (S‑1), applying simulated pressure to the pressure-resistant device through the support portion, and fixing and constraining the pressure-resistant device through the base; in the optimization process, applying simulated pressure to the pressure-resistant device, topologically optimizing the pressure-resistant device, then increasing the simulated pressure, topologically optimizing again, and so on until the simulated pressure is the design pressure, and topologically optimizing to obtain the deep-sea pressure simulation device. Compared with the prior art, the present invention has the advantages of quick and convenient design and high accuracy.

The utility model relates to the technical field of material testing, in particular to an extension tension testing device for a copper alloy stranded wire, and solves the technical problems that when the stranded wire is clamped and positioned by an existing testing device in the prior art, the end part of the stranded wire can only be clamped and positioned at a single point position, the clamping capability is poor, and the testing efficiency is high. Therefore, the problem that the stranded wire has the risk of falling off in the testing process is solved. The utility model discloses an extension tension testing device for a copper alloy stranded wire. The extension tension testing device comprises a bearing base and two vertical plates arranged at the top of the bearing base, a moving block is arranged on one side of the top of the bearing base and movably connected with the top of the bearing base through a horizontal pushing structure. According to the utility model, the plurality of clamping plates and the adjusting screw rods are arranged, so that the multi-point stable clamping of the copper alloy stranded wire is realized, the risk that the stranded wire falls off in the testing process is effectively avoided, meanwhile, the clamping stability and the testing precision are improved, and reliable guarantee is provided for the quality detection of the copper alloy stranded wire.

This invention relates to an insulation support platform for frequency converters used in withstand voltage testing, belonging to the field of electrical equipment testing technology. The invention includes a platform assembly; a telescopic mounting assembly is connected to the bottom of the platform assembly, the telescopic mounting assembly including a height adjustment mechanism with at least two adjustable levels, allowing the height of the platform assembly to be adjusted in real time via the height adjustment mechanism; an insulating pad assembly is installed between the telescopic mounting assembly and the ground, the insulating pad assembly including an insulating pad body, the surface of the insulating pad body abutting against the telescopic mounting assembly having insulating protrusions, the insulating pad assembly used to block current conduction between the telescopic mounting assembly and the ground; an equipment fixing assembly for fixing the test equipment is detachably connected to the platform assembly; at least one test placement assembly for placing test items is detachably connected to the platform assembly. This invention ensures the safe and reliable conduct of withstand voltage tests.

The invention discloses a general short-circuit current-carrying device for a box-type transformer test, and the device comprises a clamp part which comprises a clamp connection supporting part, a clamp quick-release part, and a clamp pre-tightening part, and the clamp quick-release part and the clamp pre-tightening part are connected to the clamp connection supporting part; the short-circuit communication piece is clamped by the connected clamp piece and electrically connected to the transformer, the short-circuit communication piece comprises a short-circuit connecting frame and a short-circuit connecting plate, and the short-circuit connecting plate is arranged on the short-circuit connecting frame, clamped by the clamp quick-release piece and the clamp pre-tightening piece and connected to a low-voltage winding terminal of the transformer. The plurality of low-voltage winding terminals are electrically connected. The device is simple and efficient in operation, safe and reliable in test process, high in dismounting and mounting efficiency and stable and reliable in electric connection.

The invention discloses an anti-disturbance explosion-proof detection impact test device and a working method thereof, and the test device comprises a swing rod which is rotatably arranged around a first shaft, and the free end of the swing rod is a detection end; the limiting piece is arranged outside the detection end; the collision head is rotationally connected to the detection end and rotates around the second shaft, and a first groove is formed in the end, away from the second shaft, of the collision head; when the limiting piece is embedded in the first groove and the first shaft, the second shaft and the limiting piece are collinear, the swing rod can be locked. After locking is released, the swing rod rotates around the first shaft to enable the collision head to collide with the to-be-tested piece.

The utility model discloses a protection device of a pendulum impact testing machine, which comprises a base, the base is installed on external equipment, an installation mechanism is arranged on the base, and the installation mechanism comprises an insertion rod, a fixing sleeve, a limiting block, a limiting sleeve, a transverse plate, a lateral plate, a sliding mechanism, a tightening spring, a corrugated ring, a telescopic mechanism and a lateral spring. The inserting rod is installed on the base, the limiting block is installed on the fixing sleeve, the limiting sleeve is installed on the transverse plate, the lateral plate is installed on the transverse plate, the limiting block is installed in the limiting sleeve, the installation mechanism provides a rapid and stable installation mode, it is ensured that the protection device can be firmly fixed to the testing machine, and through the design of the fixing sleeve and the limiting block, the protection device can be firmly fixed to the testing machine. And a limiting sleeve and a transverse plate are cooperatively used, and the mounting mechanism allows the protection plate to be quickly positioned and locked, so that the mounting efficiency is improved, and the stability and the safety of the protection device in a test are ensured.