205 results about "Shock test" patented technology

The invention provides a drop hammer type shock test bench controlled by a magnetic switch, belongs to the technical field of civil engineering, and relates to a fiber concrete shock-resistance property test device. The device is characterized in that a shock rack is vertically welded to a bottom plate; a positioning cantilever is connected with the shock rack through a movable bolt, and the height is freely adjusted; the magnetic switch is connected with the positioning cantilever through a movable bolt, and the position is accurately adjusted. The free falling of the shock hammer is ensured, and the protecting device is clamped around four iron baffle plates on the bottom plate through square sleeves, thus the edge conditions of a test piece during shocking are same, and simultaneously the safety of the operators is ensured. The invention has the advantages of obvious enhancement of shock test accuracy, wide application, simple structure, easy operation, convenient carrying and enhancement of test safety.

Provided is a shock device and a safety cap shock test machine. The collision device comprises a free fall assembly (FA), an impact punch, and a re-collision prevention member. The free fall assembly drops freely along the guide rail and has a vibration absorption part. The impact punch collides to a test object according to the free fall of the free fall assembly. The re-collision prevention member prevents the test object from crashing again to the test object after the collision to the test object. The safety cap shock test machine includes a base; a guide rack equipped with a guiderail and arranged on the base; a moving member movably jointed with the guide rail and moved along the guide rail; a driving unit driving the moving member to move up and down; a testing subject support unit provided with a testing subject and arranged on the base; a shock device provided with the vibration absorption part; position fixing buffer determining the stopping position of the shock device; a connectable / separatable unit jointed with the moving member; and an induction unit inducting the punching amount when the shock device punches the testing subject. The device in the invention improves the reliability of the shock test of the testing subject.

The invention provides a drop test table, and belongs to the technical field of shock test equipment. The drop test table is composed of a supporting system, a lifting drop system and a secondary-shock-preventing drop system. The supporting system comprises guide rails (1) and a shock pad (2). The four guide rails (1), an upper drop table surface (21) and a lower drop table surface (22) form a cube to support the whole test table and guarantee the stability and guidance performance. The shock pad (2) is arranged on the bottom of the test table. The lifting drop system comprises a rigid base (3) and a collision plane (4). The top end of the rigid base (3) is of a half-round shape. The collision plane (4) is fixed below a drop table surface (18). The drop test table is good in stability and repeatability. Different shock accelerated speeds can be obtained by adjusting the elevation height of the drop table surface, the test requirements under different conditions can be met, secondary shock is avoided, operation is simple, and a man-made influence factor is small.

The invention provides a workbench-type automatic power hammer device and a using method thereof, and is suitable for structural mode analysis and vibration shock tests. The workbench-type automatic power hammer device mainly comprises a motor, a base, a stand seat, a positioning gear sleeve rocker, a photoelectric encoder, a movable power hammer clamping clip, a fixed power hammer clamping clip and a power hammer, wherein the motor is fixed at the bottom of the stand seat; the rocker and the stand seat form a specific work angle through a positioning spring and a positioning gear sleeve; the photoelectric encoder is fixed to a rocker cover side at the tail end of the rocker; the power hammer is mounted in a place between the movable power hammer clamping clip and the fixed power hammer clamping clip which are mounted at the tail end of the rocker. A control signal is calculated through input shock speed, distance, shock times and frequency to control the motor to drive the power hammer to hit the surface of a workpiece to be tested according to a set required parameter, so as to realize an excitation test effect. According to the device and the method provided by the invention, the consistency, the repeatability and the regulation performance of the strength and the direction of excitation force can be ensured, so that the contact time, the strength and the shock frequency of the power hammer on the workpiece to be tested can be controlled conveniently, and ideal power pulse can be obtained more easily.

The pneumatic active multi-waveform shock wave generator includes elastic washer system, the primary piston rod, O-rings, small normal pressure air chamber, piston, high pressure air chamber, the secondary piston rod, low pressure air chamber, split sealing ring, piezoelectric ceramic executor, cylinder lid, shock platform, large cylinder and small cylinder. The present invention can excite relatively large product with semi-sinusoidal wave, later-peak sawtoothed wave and other overload waveforms, and has excellent waveform controllability and repeatability. The present invention is used in heavy load and great shock test, and has wide application range, simple structure and high reliability.

This is directed to systems, methods, computer programs and other means for shock testing a piece of equipment, i.e., the target. The target can be mounted to a shock generation machine, which is then slammed into a sturdy foundation. The impact can result in multi-axis loads, depending on how the machine is configured, while also simulating the modal frequency response of an object, such as a naval ship's deck.

A system to simulate pyrotechnic shock may include a pulse or signal generator to generate a predetermined signal waveform. A signal conditioning device may be included to condition the predetermined signal waveform to produce a predetermined shock simulation for a shock test. The system may also include a power amplifier to amplify the conditioned predetermined signal waveform to a chosen amplitude to produce a selected level of shock. A shaker system produces the selected level of shock in response to an amplified signal waveform from the power amplifier. A shock measuring device measures a shock imparted to the test specimen, and an output device presents a result of the shock test on the test specimen.

The present invention provides a back light module, having an optical element, a light source and an outer supporting means. The optical element includes main body and protrusions which protrude from an edge of the main body. Contiguous protrusions with the main body form a positioning groove. The conjunction region between protrusion and main body is a fillet. The outer supporting means fixes the optical elements and the light source, which has at least one positioning component disposed on the edge of the back plate. The positioning component includes one inner wall near to edge of the main body, a side wall near to the protrusion and a transition wall connecting the side wall and the inner wall. A separate distance g between the fillet and the side wall so that the optical element can be prevented from cracking during the impact or shock test of the back light module.

The invention relates to undercarriage shock test airplane wheel space displacement measuring system. It is made up of three space locating machine arms, four corner transducers, support, two magnetic attracting components, and computer. The three space locating machine arms are connected with each other by connecting fitting on which three corner transducers are set. The forth one is set on the support. Each of them is connected with the computer by lead. One magnetic attracting component is connected with the free end of the third space locating machine arm. Another one is fixed on the principal axis of the airplane wheel. While measuring three directions displacement, the invention can ensure expensive undercarriage run normally after shock test without drilling to set displacement transducer and destroying its structure and strength.

The present invention provides a back light module, having an optical element, a light source and an outer supporting means. The optical element includes main body and protrusions which protrude from an edge of the main body. Contiguous protrusions with the main body form a positioning groove. The conjunction region between protrusion and main body is a fillet. The outer supporting means fixes the optical elements and the light source, which has at least one positioning component disposed on the edge of the back plate. The positioning component includes one inner wall near to edge of the main body, a side wall near to the protrusion and a transition wall connecting the side wall and the inner wall. A separate distance g between the fillet and the side wall so that the optical element can be prevented from cracking during the impact or shock test of the back light module.

The invention discloses a simple high-g (gravity) acceleration shock testing machine, which comprises a base, stand columns, an upper seat, a response header assembly, a clamp control assembly and a punch rod assembly, wherein a sensor to be tested is arranged on the upper end face of a response header of the response header assembly, a circuit is well connected, a response header catch is used for blocking the outer edge of the upper end face of the response header, a response header catch screw is tightened so as to ensure that the sensor arranged on the response header and a punch rod havethe same initial speed when the punch rod in the punch rod assembly drops down vertically, the punch rod is lifted to a certain height with hands, clamping rods in the clamp control assembly is tightly clamped and a control handle is lifted to make clamping rod blocking slots clamp the clamping rods, the height of the lifted punch rod is recorded, an acquisition system parameter is set well, and the punch rod collides the base at certain initial speed vertically at high speed and rebounds so as to generate a high-g acceleration shock signal. The testing machine disclosed by the invention is simple in structure, small is space size, very low in processing and manufacturing cost and simple and convenient in operation.

The present invention provides a system and a method to enhance HYGE impact simulator sled testing, enabling more accurate measurements of lower leg injury criteria and providing a more accurate restraint system evaluation during a HYGE impact simulator test. The system provides the generation of both rotational and translational footwell intrusion, replicating an actual barrier crash impact test. The rotational and translational footwell intrusion includes foot motion; lower leg motion, including various forces and moments; and knee motion, including interaction with the instrument panel.

The invention relates to the technical field of impact compression loading, in particular to a shock wave time calibration device and method for a shock test. The calibration device comprises a controllable high-speed emitting device, a target chamber and a signal collecting device, wherein the target chamber is a vacuum target chamber; an experiment target is arranged in the target chamber; the experiment target comprises a substrate, a fixed column, an optical probe and an electric probe; a light-emitting gap is formed between the substrate and the fixed column; the optical probe and the electric probe are connected with the signal collecting device; and the controllable high-speed emitting device is used for driving a flyer to impact the left side wall of the substrate. According to thecalibration device and method, two waveforms generated according to signals detected by the electric probe and the optical probe are comparatively analyzed, and a more accurate waveform data graph isselected to finally judge a time point when a shock wave enters a sample, so that an important parameter, namely, the time point when the shock wave enters the sample can be more accurately calibrated, and follow-up experiment data is more reliable and effective.

The invention relates to a multi-dimensional multi-mode ground shock test device of a building curtain wall. The test device comprises a three-directional six-freedom degree simulation earthquake shock platform, a steel structure frame, a horizontal displacement loading rigid frame, a vertical displacement loading rigid frame, a vertical displacement loading counter-force beam, a connecting plate, a connecting plate, a connecting plate, an internal thread sleeve, bolts, screws and corresponding nuts, wherein the steel structure frame is fixed at a platform surface of the three-directional six-freedom degree simulation earthquake shock platform; three-directional acceleration action loading is realized on the platform surface of the three-directional six-freedom degree simulation earthquake shock platform; the horizontal displacement loading rigid frame is connected with a steel structure frame column through a connection mode that horizontal displacement can be adjusted, thereby realizing horizontal displacement action loading; and the vertical displacement loading rigid frame is connected with the steel structure frame column through a connection mode that vertical displacement can be adjusted, thereby realizing vertical displacement action loading. With the adoption of the test device, multi-dimensional multi-mode ground shock loading can be realized, and repeated loading of the horizontal displacement and the vertical displacement can be realized; and the test device is simple in structure and convenient and safe to operate.

The invention provides a test instrument of shock resistance of a high performance material, comprising a heavy hammer and a heavy hammer lifting device, wherein, the heavy hammer lifting device comprises a power structure, a shifting rod and a rocker arm; the shifting rod is connected on the power structure and can be rotated by the power structure; the rocker arm is arranged on a rotating shaft; when a first end of the rocker arm is opposite and parallel to the outer end of the shifting rod, the rocker arm and the shifting rod are in staggered and contact state, the first end of the rocker arm is positioned at the lower part of the shifting rod, and a second end of the rocker arm is connected with the heavy hammer by a lifting rope. The test instrument also comprises a limiting part for limiting the rotating range of the rocker arm. The test instrument of shock resistance of the high performance material has simple structure and convenient operation and can automatically complete continuous shock test.

A shock test device comprises a test board, a stand column, a support plate, a shock sleeve and a shock hammer. The stand column is fixed on the test board, the support plate is fixedly connected with the stand column, an interval is formed between the support plate and the test board, the shock sleeve is fixed on the support plate, an intercepting hole is formed in the side wall of the shock sleeve, the shock hammer can drop on the test board through the intercepting hole, a solenoid valve is arranged on the outer side of the shock sleeve, and the valve core of the solenoid valve can stretch into the intercepting hole to clamp the shock hammer. The shock test device controls the connection and disconnection of the solenoid in shock process to enable the valve core of the solenoid valve to stretch into the shock sleeve through the intercepting hole on the side of the shock sleeve, and to stop the shock hammer which shocks from rebounding and falling down again, and thus a secondary shock to a testing part caused by rebound of the shock hammer is avoided. The invention further provides a shock test method.

The invention relates to an overload environment simulation test device and particularly relates to a dual-overload environment force loading simulator. The problems of inconvenience in use, a large size, high cost, large vibration in a test and a limited application range of an existing overload environment simulation test device are solved. The dual-overload environment force loading simulator comprises a flywheel energy storage part, a shock overload environment force loading part, and a rotation centrifugal overload environment force load part. The flywheel energy storage part comprises a cylinder, a master rotation shaft, an electromagnetic clutch, a couler, a motor, a conductive sliding ring. The shock overload environment force loading part comprises a ring-shaped upper rotation disk, a ring-shaped lower rotation disk, an electromagnet, a collision block, and a position sensor. According to the dual-overload environment force loading simulator, the impact overload of aircraft key components and the continuous loading process of rotation centrifugal overload environment force are simulated truly, and the device is suitable for the fields of the performance test of an aircraft, a shock test of a material, and the calibration of an acceleration sensor.

The invention relates to a mechanical shock test fixture for an integrated circuit, which comprises that a base (1), a cover plate (5) and bolts, wherein a positioning groove (2) for containing the integrated circuit is formed in the middle of the base (1); at least two bolt holes (3) are formed in the base (1); a group of wire lead holes (6) matched with the positioning groove (2) in the base is formed in the middle of the cover plate (5); at least two bolt holes (4) matched with the base are formed in the cover plate (5); and the matched bolts (7) are arranged in the bolt holes in the base and the cover plate and connect the base and the cover plate into a whole. The fixture has the advantages that a circuit sample is completely nested into the fixture and completely matched with the fixture, so that the sample does not bear outside stress or slide under the conditions of progress and high acceleration (a peak value exceeding 100,000 g), and the completely actual shock resistance level of the sample is reflected. Shock tests in six directions can be achieved conveniently only by changing the connection direction of a mold, and the direction change is also very simple.

A rotary shock testing machine including: a base; a shaft rotatable relative to the base; a test disc for holding one or more specimens to be tested, the test disc being rotatable with the shaft; an actuator for applying a rotation to the shaft and test disc; and a brake for applying a braking force to the test disc to subject the one or more specimens to a rotary shock.

The invention relates to a circuit mechanical shock test fixing device. The circuit mechanical shock test fixing device is characterized by comprising a supporting plate (1) and a pressing plate (2); a groove (1a) is formed in the supporting plate (1), lower pin insertion holes (1b) are formed in the groove (1a), and four lower installation through holes (1c) are evenly distributed in the supporting plate (1); upper pin insertion holes (2b) correspondingly matched with the lower pin insertion holes (1b) in the supporting plate (1) in a one-to-one manner are formed in the pressing plate (2), four upper installation through holes (2a) are evenly formed in the pressing plate (2), and the upper installation through holes (2a) are correspondingly communicated with the lower installation through holes (1c) in the supporting plate (1) in a one-to-one manner; and the supporting plate (1) and the pressing plate (2) are in immovable fit through nuts and bolts which are arranged on the corresponding upper installation through holes (2a) and the corresponding lower installation through holes (1c) in a matched manner. The circuit mechanical shock test fixing device has the beneficial effects that the structure is simple, installation is convenient, circuits are not damaged, the accuracy is high, and the using universality is high.

A rotary shock-testing machine including: a base; a first shaft rotatable relative to the base, the first shaft being driven to rotate; a first wheel rotatable with the first shaft; a second shaft rotatable relative to the base; a second wheel rotatable with a first portion of the second shaft; and a test disc for holding one or more specimens to be tested, the test disc being rotatable with a second portion of the second shaft; wherein the first and second wheels are aligned with each other such that the second wheel is driven by the first wheel when a material is introduced into a gap between a surface of the first wheel and a corresponding surface of the second wheel.

The invention aims to provide a multi-station clamping device for fuel gas pipeline laser shock test. The device includes a bottom plate and a movement structure. The movement structure mainly includes: a fuel gas pipeline clamping and rotary driving part, called clamping part for short; a pipeline support length adjustable and variable diameter pipeline supportable part, called adjustment part for short; and a pipeline axial feed driving part, called driving part for short. The bottom plate includes a fixed bottom plate structure, a movable bottom plate structure and a test base station. Directed at fuel gas pipeline laser shock test, the invention designs the device meeting clamping and movement requirements, avoids personal injury, reduces manpower, improves labor productivity and reduces production costs, and is also the necessary condition for realizing production automation.

The invention provides a device for high and low temperature shock tests. The device comprises a shell and partition plates arranged in the shell. The shell is divided by the partition plates into a first cavity, a second cavity and a third cavity, wherein the first cavity is used for conducting a high-temperature test on a product to be tested, the second cavity is used for conducting a low-temperature test on a product to be tested, and the third cavity is used for stopping heat exchange between the first cavity and the second cavity. By the adoption of the technical scheme, rapid testing of the product to be tested is achieved, the investment cost can be reduced, and the electricity consumption of a test device can be reduced.

The invention relates to a tank container. The tank container is provided with a frame and a tank mounted in the frame, wherein the frame comprises end frames and a side beam; the end frames are arranged at the two ends of the tank respectively; the side beam is connected between the two end frames; a plurality reinforcing rings are arranged at the periphery of the tank; the two ends of the tank are also connected with the end frames through an end ring respectively; and the frame also comprises a plurality of square pipes which are arranged at the bottom of the tank. The tank container can pass a domestic tank container railway shock test and meet the requirements of more users of the tank container in China.

Embodiments of the present invention are directed to an apparatus, system and associated method of operation that allows medium weight Class II equipment to be shock tested using a Medium Weight Shock Machine (MWSM) in a manner that adequately simulates the required shock response exhibited when subjected to underwater explosion (UNDEX), Heavyweight testing utilizing a FSP. Advantageously, such an apparatus, system and associated method allows for testing of Class II medium weight (e.g., about 500-4500 lbs.) equipment (e.g., submarine and surface vessel equipment) utilizing an MWSM instead of Heavyweight testing utilizing a Floating Shock Platform (FSP). Testing of Class II medium weight equipment in this manner significantly reduces cost of testing such equipment and increases safety associated with testing such equipment.

The present invention provides an ac voltage transient device, including an ac input end of the voltage input for the wave shock test, or the voltage input for the voltage falling and shortening broken test; a bridge full wave rectifier for rectifying the signal full wave from the ac input end to the dc voltage signal of duplication frequency half-sine waveform; a change-over switch for transient switching signal from the bridge full wave rectifier; a phase detection, control circuit for detecting phase from the bridge full wave rectifier signal and controlling the on-off of the change-over switch, and a rectifier isolation output circuit. The device is easy to achieve, having lower cost, accurately controlling the voltage transient phase angle and the transient time, all electronic equipment adopting the ac input full wave rectifier, can make the device complete the credible test of the equivalent ac voltage wave impact, voltage fall and shortening break.

The invention discloses mechanical shock test equipment, comprising a base, guide posts, a driving device, an impact hammer, a cushion plate, a cross beam, an acceleration sensor, a data acquisition card and a computer, wherein the impact hammer sleeves the guide posts and is hung on the cross beam, the cushion plate is arranged on the upper surface of the base and positioned below the impact hammer, a sample is placed on the cushion plate, the driving device can drive the impact hammer to ascend and descend on the guide posts, the impact hammer comprises a main body structure and a hammerhead which is connected under the main body structure in a detachable manner, the acceleration sensor is arranged in a groove of the lower surface of the hammerhead, the lower surface of the hammerhead is further provided with a cover plate used for covering the acceleration sensor, the data acquisition card acquires acquisition electrical signals detected by the acquisition sensor and transmits acquired data to the computer, and a software platform is used for displaying the acquired data. The multifunctional mechanical shock test equipment disclosed by the invention can accurately obtain short pressure in the test process and increase test accuracy.

The invention relates to an impact test bed, which comprises a base, an impact fixing seat fixed on the base, a waveform generator arranged in a mounting groove on the base and the impact fixing seat, sliding rods inserted and fixed in the impact fixing seat, a working table connected with the sliding rods, driving devices for driving the working table to move vertically and a power supply device, wherein the mounting groove is together formed by a first cavity arranged in the base and a second cavity arranged in the impact fixing seat. The whole impact test bed has a vertical structure, various kinds of waveform generators can be placed through arranging the mounting groove in the device, the position of the waveform generator can be adjusted through the adjustment seat, and small-acceleration and large-pulse width impact test can be carried out on small and medium specimen. The impact test bed is simple, low in cost, convenient in operation and small in occupied area.