177 results about "Drop test" patented technology

The utility model discloses an undercarriage drop test stand, which comprises a vertical track support, a vertical pulley assembly is arranged on the vertical track support, the vertical pulley assembly moves up and down along the vertical track support, and a cantilever pulley track assembly is fixedly connected to the vertical pulley assembly. The cantilever pulley track assembly moves up and down along the vertical track support along with the vertical pulley assembly, a horizontal pulley assembly is connected to the cantilever pulley track assembly in a sliding mode, an undercarriage mounting base is arranged on the lower side of the horizontal pulley assembly, and the undercarriage mounting base directly faces an inclined plane base plate arranged on the ground. According to the invention, impact generated by vertical falling of the undercarriage can be simulated, horizontal displacement generated by falling contact with a slope can also be simulated, various simulation test environments are provided, and the damage degree of the undercarriage and the stability of a connection area of the undercarriage and an aircraft main body are judged according to recorded test data.

The invention is applied to the technical field of test equipment, and discloses a drop test device and method, a storage medium and a control system, and the drop test device comprises an object acceleration control unit which is configured to drive a to-be-tested object to do accelerated motion along a first direction according to a target acceleration; the object angle conversion control unit is configured to receive the to-be-tested object completing accelerated motion and convert the motion direction of the to-be-tested object to a second direction, and the to-be-tested object falls in a free-fall accelerated motion mode; the object speed and angle monitoring unit is configured to monitor the falling angle and the falling speed of the to-be-tested object during falling. No clamp is in contact with an object to be tested in the falling test process, so that interference-free high-precision directional falling control is realized; the to-be-tested object does the free falling motion with the initial speed, so that the falling speed is not limited by the height, and the requirement for accelerated falling test is met. Therefore, the drop test equipment can realize high-precision directional acceleration drop test and improve the accuracy of a drop test result.

The utility model discloses a drop test device, which comprises a sample mounting and lifting unit, a sample fixing unit and a drop receiving unit, the mounting and lifting unit can move and level, a tested product sample is detachably mounted on the sample fixing unit, the sample fixing unit is movably mounted on the mounting and lifting unit, and the drop receiving unit is mounted on the mounting and lifting unit. The sample fixing unit is controlled to release the tested product sample, so that the tested product sample freely falls into the falling receiving unit. According to the utility model, the drop test can be carried out on products such as a point-type temperature-sensitive fire detector and a manual fire alarm button, free drop of a tested sample can be realized, drop height control, repeatability and consistency are good, the device is simple to operate, and test efficiency can be improved.

The utility model discloses a drop test device for an energy storage power supply, which belongs to the technical field of battery performance test, and is characterized in that a position adjusting mechanism and a test platform are arranged on a rack, the position adjusting mechanism comprises a first guide slideway and a second guide slideway which are perpendicular to each other in the spatial direction and are in sliding fit, the test platform comprises two oppositely arranged L-shaped support clamping plates and a turnover assembly; during use, test products of different sizes or models can be fixed and released through the two L-shaped supporting clamping plates and the overturning assembly on the test platform, the fixing procedure and structure of the test products are simplified, manual close-range participation is not needed in the release process, the test safety is improved, and the test efficiency is improved. Moreover, the height of the test platform and the adjustment of the clamping width can be controlled through the cooperation of the first guide slide way and the second guide slide way so as to meet various test requirements, and the use flexibility is improved, so that the test device is simple in structure, is convenient and rapid to use, and solves the existing problems.

The invention belongs to the field of aviation structure strength tests, and particularly relates to a testing machine pitching and rolling angle adjusting method and system for a full-aircraft drop test, and the method comprises the steps: adjusting the lengths of a front lifting rope l1 and a rear lifting rope l2 through a first servo motor; the lengths of the adjusted front lifting rope l1 and the adjusted rear lifting rope l2 are calculated through the cosine law according to the geometrical relationship; the lengths of the left lifting rope 13 and the right lifting rope 14 are adjusted through a second servo motor; and the lengths of the adjusted left lifting rope 13 and the right lifting rope 14 can be calculated through the cosine law according to the geometrical relationship. The pitching and rolling postures can be automatically adjusted, and the problems that an existing method is low in efficiency and poor in precision are solved. According to test experience, according to an existing posture adjusting method, replacement needs about half a day to one day every time, the number of times of putting every day does not exceed ten at most, and manual operation is needed on wings or a fuselage every time. And after automatic adjustment is achieved, the target can be achieved in several minutes through adjustment of the motor, efficiency is high, and safety is higher.

The utility model provides a bearing rotation drop test rack comprising a rack body, the rack body comprises an operation table and a test bench, the operation table is provided with a controller, the test bench is provided with a first motor, a clutch, a transmission member and a mounting seat, and the first motor, the clutch, the transmission member and the mounting seat are arranged on the rack body. The lower end of the transmission part extends to the mounting base and can be in clamping sleeve fit with the mounting base and the two ends of the bearing to be tested, the clutch is connected between the first motor and the upper end of the transmission part, and the clutch can drive the transmission part to rotate under the driving of the first motor; and the controller is used for promoting separation and connection between the clutch and the transmission part. Aiming at the defects in the prior art, the utility model provides a rack for a bearing rotation drop test, which can better simulate the bearing capacity of a bearing during rotation drop during operation.

The utility model discloses a carton drop test device convenient to adjust, which comprises a base, a mounting frame fixedly arranged on the base and a control box arranged on the base, a movable sleeve is movably arranged on the mounting frame, a supporting piece for placing a carton is rotatably arranged at the lower end of the movable sleeve, and a plurality of clamping grooves are formed in the lower end of the supporting piece. The supporting pieces are connected through a push-pull air cylinder arranged on one side, and an adjustable limiting assembly is arranged at the upper end of the movable sleeve. Cartons placed at different inclination angles can be limited and fixed through the limiting assembly, meanwhile, the carton is supported by matching with the supporting piece at the bottom, and the placement stability of the carton at different angles or when the carton is filled with materials is improved; the problem that in the prior art, when a carton is clamped and fixed from the two sides, the carton is prone to being damaged is solved, meanwhile, the angle and position of the carton can be conveniently adjusted, limiting and fixing are conducted from different positions through the limiting assembly, and the stability of a carton falling test and the comprehensiveness of test data are improved.

The invention relates to a release device (1) for releasing an object suspended therefrom under load, in particular for drop tests, wherein the release device (1) comprises: two complementarily shaped clamping jaws (3a, 3b), wherein the clamping jaws (3a, 3b) are each rotatably mounted about a bearing (2), wherein the clamping jaws (3a, 3b) are designed to hold a release bolt (4) with the hanging object attached thereto in the closed state; and a toggle lever with two legs (5, 6), wherein the legs are connected at their common connection to a bearing bolt (7) and are connected at their respective outer connections (22a, 22b) to the clamping jaws (3a, 3b), wherein the toggle lever is designed to hold the clamping jaws (3a, 3b) closed without actuating force in an overextended configuration against a mechanical stop (10);wherein the toggle lever is configured to release the locking of the clamping jaws (3a, 3b) by a primary stroke (24) of the bearing pin (7) resulting from the overextension of the toggle lever beyond the dead center, corresponding to a secondary stroke (25), so that the clamping jaws (3a, 3b) transition to an open state and the hanging object is dropped. The invention further relates to a method for releasing a hanging object under load.

The invention discloses a drop test device for a case of a vehicle battery pack. The device includes a bracket body, and a mounting frame is suspended horizontally on an upper end surface of the bracket body. The two mounting frames are fixed parallel to the bracket body, and a fixing frame is horizontally fixed below each of the mounting frames on the bracket body. A sliding seat is slidably arranged between the two mounting frames, and one side of the fixing frame is provided with a side connecting plate. A sliding rail is arranged between the sliding seat and the side connecting plate, and a simulated platform mechanism is slidably arranged on the sliding rail for body installation of the vehicle battery pack so as to design installation states of the vehicle battery pack according to different models.

The utility model discloses a throwing test platform, which relates to the technical field of throwing test machinery and comprises a stop pile, a bearing mechanism and a throwing rack, and the stop pile is arranged at the tail end of the bearing mechanism. The device can be used as important guarantee equipment for ground test items such as function verification, performance test, delivery acceptance and the like, and can meet the requirements of multi-connection continuous release tests.

This invention discloses a method for identifying vehicle modal parameters based on impact loads, comprising the following steps: S100: designing drop conditions according to the vehicle system's modal characteristics; S200: conducting drop tests on the test vehicle under the designed drop conditions; S300: collecting the vehicle's vibration response during the drop test and calculating the modal energy using the vibration response; S400: identifying modal parameters using the state variable method. This invention utilizes impact loads to excite the modal vibration response of the vehicle system and combines the modal energy method and the state variable method to accurately identify the modal parameters. This invention is simpler, lower cost, and more accurate, effectively identifying the modal parameters of a rail vehicle system without the need for complex simulations and high testing costs.

The invention provides a multifunctional simulation drop test device and a detection method thereof, and the device comprises a pedestal, the pedestal is provided with a rack for installing a screw rod piece, a bearing seat installed on the screw rod piece is rotatably connected with a shaft sleeve piece arranged on a storage seat through a fulcrum shaft, the two sides of the storage seat are provided with open grooves with guide rail pieces, the guide rail pieces are movably provided with sliding seats, and the sliding seats are provided with through holes. One end of a shaft rod arranged on the sliding base is connected with a supporting plate through a sleeve and connected with a second driver, when an object is placed on the supporting plate, the second driver controls rotation of a fulcrum shaft to achieve bearing and falling of the object, and through cooperation of the fulcrum shaft and a shaft sleeve piece, the object can be driven by the object placing base to conduct angle adjustment. The pedestal is provided with a clamping groove, the clamping groove is movably provided with a contact base, the contact base is movably provided with a contact plate in contact with an object, and the contact plates made of different materials are in contact with the object, so that different contact environments are simulated, and the detection comprehensiveness is improved.

The present disclosure relates to the technical field of test equipment, and provides a falling test device, which comprises a lifting assembly, a sliding assembly, a containing assembly and a cushion plate assembly; the lifting assembly has a lifting piece and a driving motor in transmission connection with the lifting piece; the sliding assembly is in separable connection with the lifting piece and can move upward synchronously with the lifting piece or freely fall alone after being separated from the lifting piece; the containing assembly is connected with the sliding assembly and has a containing space for containing an object to be tested; the cushion plate assembly is correspondingly arranged below the containing assembly and is used for receiving the containing assembly and detecting the impact load when the containing assembly falls; the driving motor can electrically drive the lifting piece to move upward to a fixed height. The falling test device has the beneficial effects of being able to accurately control the falling height and having high test efficiency.

The invention discloses an impact-drop test system based on a buoyancy principle and a test method thereof, and relates to the field of impact resistance tests of engineering structures. The problems that an existing impact / drop test system is high in construction and maintenance cost and complex in safety problem, the form of a hammer head in an impact test is single, and an impact / drop test of a complex model or a prototype which is large in danger, large in height and large in size cannot be carried out are solved. According to the invention, large-height lifting of a large-mass and large-size complex model in a large impact / drop test is realized by using the balloon type floating load tool, so that the whole test system is movable; the specific form of the floating load tool comprises but is not limited to a hot-air balloon, a balloon filled with light gas and provided with a heating device and an air bag closed balloon with the height controlled through the inflation amount according to test requirements, the lifting height is not limited to the maximum design value given by the method, and the falling position is accurately controlled by combining track calculation software. The impact-drop test device is used for impact-drop tests.

The utility model discloses a drop test tool. The drop test tool comprises a rack, a material box, a drop mechanism, a pickup mechanism and a visual inspection mechanism, the material box is mounted on the rack; the falling mechanism is installed on the machine frame and provided with a clamping jaw, and the clamping jaw is located above the material box. The picking mechanism is installed on the rack, the picking mechanism is provided with a picking clamping jaw, and the picking clamping jaw can move between the material box and the clamping jaw; the visual inspection mechanism is installed on the machine frame and electrically connected to the picking mechanism. According to the drop test tool, the drop test of equipment can be automatically carried out, manual intervention is reduced, the large-scale and high-frequency test requirements are met, and the test efficiency is improved.

The utility model relates to the field of electronic equipment testing, in particular to an electronic equipment drop test device, which comprises a test box, a protective plate and an observation window are respectively and rotatably mounted on one side of the test box, a lifting mechanism is arranged in the middle of the other side of the test box, a lifting head is arranged on the lifting mechanism in a driving manner, and a vacuum pump is arranged on the lifting head. The vacuum pump is connected with the vacuum suckers. According to the utility model, the equipment to be detected is fixed on the lifting head through the vacuum chuck, the lifting head is driven by the control box to ascend and descend, and the equipment is released at a specified height, so that not only can the stability and the homogeneity of each test condition be ensured, but also the feeding can be carried out more quickly, and the detection efficiency is ensured; meanwhile, through cooperation with an inclined table and a test platform arranged at the bottom of the test box, splashing of chippings falling from the equipment can be avoided, the chippings are collected in time, and the accuracy of a test result is guaranteed.

The invention relates to the technical field of test equipment, and particularly discloses a turnover device and drop test equipment, the turnover device comprises a positioning mechanism, a turnover mechanism and a lifting driving member, the positioning mechanism comprises a first positioning assembly, a second positioning assembly and a supporting seat, the first positioning assembly is used for clamping or loosening two ends of a to-be-tested product in a first direction, and the second positioning assembly is used for clamping or loosening two ends of the to-be-tested product in a second direction; the second positioning assembly is used for clamping or loosening the two ends of the to-be-detected product in the second direction; the turnover mechanism comprises a turnover driving part and a turnover grabbing assembly in transmission connection with the turnover driving part, the turnover driving part can drive the turnover grabbing assembly to rotate, and the turnover grabbing assembly is used for grabbing or loosening the tested product; the lifting driving part is used for driving one of the positioning mechanism and the turnover mechanism to be close to or far away from the other one in the vertical direction, the to-be-tested product is positioned through the positioning assembly before and after the to-be-tested product is turned over, and it can be guaranteed that the position of the to-be-tested product grabbed by the turnover grabbing assembly is accurate; and the position precision of the overturned product to be detected is ensured to be reliable.

The utility model relates to a skid -type undercarriage drop test device, including gantry, electric hoist, electromagnet, metal section tool rest, counterweight, the metal section tool rest is used for installing counterweight, and still include the undercarriage installation tool of skid -type undercarriage, electric hoist fixed mounting is below the gantry, is used for driving the lift of electromagnet, the electromagnet can adsorb the metal section tool rest when electrification.

The present invention provides a wear-resistant steel ball drop tester, comprising a base, a collision chamber, a detection frame, a catheter assembly, a lifting component and a locking component. The collision chamber is rotatably installed on the base, the detection frame is slidably assembled along a positioning column, an active electromagnetic suction cup is arranged on the detection frame, the catheter assembly is used to connect the lifting component and output the steel ball to be adsorbed to one side of the electromagnetic suction cup, the lifting component is used to carry the fallen steel ball into the catheter assembly, and the locking assembly is used to control the flipping of the collision chamber. The present invention is provided with a rotatable collision chamber on the base and a liftable detection frame on one side of the base. The steel ball can be automatically recovered at any height position after the collision according to the release action of the steel ball, and the recovered steel ball can be lifted and transported to the catheter assembly for pre-filling, so that the electromagnetic suction cup can automatically position and adsorb the steel ball.

The invention provides an undercarriage drop test bed hanging basket. The undercarriage drop test bed hanging basket comprises a hanging basket frame; the multiple sets of guide roller structures are arranged at the corners of the hanging basket frame. Each guide roller structure comprises a heading roller structure and a vertical roller structure. The first eccentric shaft rotates to drive the first roller to rotate so as to adjust the distance between the wheel face of the first roller and the stand column of the test bench in a stepless mode. Wherein the vertical roller structure and the heading roller structure adjust the distance between the wheel surface and the stand column of the test bench in the same manner. Therefore, precise adjustment of the gap between the roller and the stand column sliding plate of the test stand is realized by utilizing stepless adjustable radial displacement of the roller surface when the eccentric shaft rotates, the transverse size of the hanging basket can be reduced by adjusting the contour of the roller before the hanging basket is installed, so that the hanging basket can quickly penetrate through the stand column space to complete assembly, and the gap can be accurately calibrated to an ideal gap value before the test. The problems that a traditional gasket adjusting mode is large in adjusting difficulty and large in workload are solved, and the test efficiency and precision are remarkably improved.

The application discloses a packaging structure and air conditioning equipment, the packaging structure comprises a first cover body and a second cover body, the first cover body and the second cover body are connected and form a containing cavity; one end of the first cover body inside has a first limiting assembly, one end of the second cover body inside has a second limiting assembly matched with the first limiting assembly; the other end of the first cover body inside has a bevel support assembly, the bevel support assembly makes the same end of the first cover body and the second cover body form a difference; after placing the product to be packaged in the containing cavity, the first cover body and the second cover body can be locked through the cooperation of the first limiting assembly and the second limiting assembly, and the first limiting assembly and the second limiting assembly are arranged on the same side of the packaging structure, so that the limiting protection is convenient when the side drop test; and because of the existence of the difference, the back of the fuselage with strong strength is stressed when the side super-high test, and the technical problem that the prototype top is often cracked during the super-high drop test is solved.

The invention relates to the technical field of hydrogen storage cylinder test detection, in particular to a temperature-controllable gas cylinder accelerated drop test device and method, and the device comprises a lifting platform and a gas cylinder telescopic rotary clamping tool. The gas cylinder telescopic rotary clamping tool and the lifting table are respectively used for clamping a test gas cylinder and supporting the gas cylinder to do vertical accelerated motion, the gas cylinder telescopic rotary clamping tool is fixedly arranged below the lifting table, and the lifting table is provided with a temperature control cavity annular wall inlet and outlet. And the temperature control cavity annular wall inlet and outlet is used for providing an extension and retraction channel for the multi-section annular wall of the temperature control cavity. According to the test device and method, high-energy and high-acceleration drop simulation is realized, an accurate temperature environment simulation function is integrated, all-around and automatic test and safety guarantee are provided, the test flexibility and automation degree are improved, self-verification and feedback optimization capabilities are provided, the test accuracy can be verified, and the test efficiency is improved. And closed-loop optimization of the test process is supported.

The utility model belongs to the technical field of drop test, and particularly discloses a drop detection safety protection device which comprises a bottom table, a frame plate is installed on the outer side of the bottom table through bolts, an opening is formed in the front end of the frame plate, a protection door is arranged in the opening in a sliding mode, and a working platform is movably installed on the surface of the bottom table. A side plate is installed at the end of the rear portion of the working platform, a door opening mechanism and a path groove are arranged on the inner wall of the frame plate, a protruding column and a pushing column are arranged on the surface, close to the frame plate, of the side plate and matched with the path groove and the door opening mechanism correspondingly, and a driving mechanism is arranged in the bottom table. According to the utility model, when substandard objects are broken after a falling test, the driving mechanism drives the working platform to move forwards, and the working platform is in an inclined state after extending out, so that the cleaning and the maintenance are facilitated.

The invention discloses a titanium-based composite undercarriage drop simulation analysis method, and relates to the technical field of aviation, and the method comprises the steps: building a buffer mechanical model of a titanium-based composite undercarriage, the buffer mechanical model covering an air spring force, an oil damping force and a structure limiting force; establishing a rigid-flexible hybrid virtual prototype model based on a multi-body dynamics method, wherein the rigid-flexible hybrid virtual prototype model realizes component integration through geometric modeling, flexible body creation and rigid-flexible coupling processing; carrying out drop test simulation, and obtaining a dynamic response curve of the undercarriage under the impact load through parameter setting and dynamics calculation; through combination of rigid-flexible coupling modeling and drop test simulation, simulation of the drop behavior of the titanium-based composite undercarriage is realized. According to the method, the test cost can be reduced, the research efficiency is improved, and the method has important engineering significance for lightweight and high-performance design of the undercarriage.

The application discloses a kind of introduction cable preform end assembly drop test device, including base;The bottom end of the both sides of the base is hinged with load-bearing plate by hinge;By operator sliding clamping plate A and horizontal crossbar backwards, it is fixed on the object plate, while the metal impact plate in the base is removed, and is clamped in the base;Subsequently, artificially take out the introduction cable preform, and lead out a section through between clamping plate A and clamping plate B, and make the section that it leads out adhere to the bottom of horizontal crossbar, then release hand, the end of introduction cable preform leads out will swing around the part that it is fixed in clamping plate A and clamping plate B under the action of gravity, and impact on metal impact plate under the action of inertial force;Relative to prior art, steel ruler is arranged in the device on the both sides of support frame, can ensure that the introduction cable drop height is consistent and adjustable, the result error of repeated test is relatively small, and the accuracy is guaranteed.

The invention discloses an aircraft landing gear buffer mechanical model construction method and device and a storage medium. The method comprises the steps that S1, a buffer mechanical model is established; s2, acquiring drop test data and extension test data of the nose landing gear; and S3, correcting the oil damping force in the buffer mechanical model by using the drop test data and the extension test data of the nose landing gear. According to the technical scheme, the accuracy of the buffer mechanical model is improved.

The utility model provides a device for a drop test of a battery of more than 50kg, which comprises a frame, a lifting rope rotating shaft is rotatably arranged in the middle of the upper end of the frame, a winch is arranged in the middle of one side of the frame, a lifting rope is bundled on the winch, one end of the lifting rope bypasses the lifting rope rotating shaft and is fixedly connected with a lifting hook, the lifting hook comprises a hook body, and the hook body is fixedly connected with the lifting rope. The upper end of the hook body is fixedly connected with a lifting rope, an opening is formed in the middle of the lower portion of the hook body, a wrench and a hook are contained in the opening, one end of the wrench is rotationally connected with the hook body, and the upper end face of the hook is an inclined face and forms an acute-angle tip. The wrench is in a horizontal state, a hanging rod is arranged on one side of the middle of the hook, and one side of the middle of the hook is rotationally connected with the hook body. According to the invention, the falling height and the impact position of each time can be consistent, and the accuracy of the subsequent test result and the safety of the detection operation process are ensured.

A drop test device for a micromechanical component. The drop test device includes a drop body having a shell and having an interior space for receiving at least one micromechanical component.

The present invention relates to the field of motor processing technology, and specifically to a drop test device for axial motor processing, comprising a landing device, a landing plate installed on the landing device, a suction cup arranged on the landing plate, a control console for controlling the landing device and the suction cup, a drop platform located below the suction cup, and a protective shell installed on the outside of the drop platform, and also includes: an adjustment component. The drop test device for axial motor processing is provided with an adjustment component provided on the landing plate. The adjustment component can adjust the working states of two groups of suction cups thereon through a connecting plate, so that the two groups of suction cups can adsorb the plane of a micro axial motor tooling, and at the same time, the two connecting plates can clamp the side of the micro axial motor tooling, so that the drop test device in the present invention can perform directional drop detection and short-distance micro-drop detection on the micro axial motor, effectively reducing the detection cost of the micro axial motor.

The application provides a hydraulic lifting adjusting locking device for aircraft landing gear drop test, comprising: a support assembly comprising a base and a support, the support being arranged on the base, the support comprising four first vertical supports, two second vertical supports and a horizontal support; a sliding carriage assembly comprising a sliding carriage body and a guide wheel set, the sliding carriage body being used for carrying a test weight, the sliding carriage assembly sliding along the vertical supports under the guidance of the guide wheel set; a lifting assembly comprising two lifting oil cylinders and two linear modules, each linear module comprising a sliding member and a sliding rail arranged along the second vertical support, the sliding member being arranged around the lifting oil cylinder by a hoop, so that the lifting oil cylinder slides along the sliding rail in the vertical direction; a locking assembly arranged on the second vertical support, the locking assembly locking the sliding carriage assembly when the sliding carriage assembly reaches a preset position; and a safety assembly arranged on the vertical support, the safety assembly positioning the sliding carriage assembly when the sliding carriage assembly is locked.