14 results about "Shock strength" patented technology

The utility model relates to the technical field of toe guard strength testing equipment, and discloses elevator toe guard impact strength testing equipment, which comprises a supporting seat, a bearing plate and a strength tester main body, a rubber bump is fixedly arranged at the upper end of a shock pad, a buffer spring is fixedly arranged between a reinforcing frame and the bottom of the supporting seat, and the bearing plate is fixedly arranged on the supporting seat. According to the strength tester, the reinforcing frame is arranged at the bottom of the supporting seat, meanwhile, the shock pad is arranged between the supporting seat and the bearing plate, and the rubber convex blocks are uniformly distributed on the shock pad, so that part of vibration energy can be further effectively absorbed and dispersed; and finally, a screw block moves back and forth along the inner wall of a sliding rail, and meanwhile, a strength tester main body on a mounting seat is driven to horizontally move in the other direction, so that the strength tester main body can carry out strength testing on different parts of the toe guard, and the accuracy of detection data is improved.

The invention relates to the technical field of unmanned aerial vehicle safety protection and anti-explosion packaging, and discloses an anti-explosion packaging method for unmanned aerial vehicle hardware, which comprises the following steps: step 1, performing anti-explosion pretreatment on the unmanned aerial vehicle hardware; the inner buffer layer is made of modified silicone rubber, the thickness is accurately calculated through a formula, impact stress can be attenuated by 80% or above, meanwhile, honeycomb-shaped heat dissipation channels are formed, and the problem of heat concentration is solved; the middle anti-explosion barrier layer is made of an aluminum oxide ceramic-silicon carbide fiber composite material, the impact strength is 15-20 MPa, the bending strength is 300-400 MPa, the middle anti-explosion barrier layer can resist explosive shock waves of 1.5 MPa or below, the toughness is further improved through a built-in stainless steel mesh reinforcing layer, and brittle fracture is avoided; the outer protection layer adopts a polyether-ether-ketone (PEEK) + zirconium oxide nano coating (HV1200-1500), is wear-resistant, corrosion-resistant and impact-resistant, flame and fragment leakage can be completely blocked through the cooperation of the three layers, the external temperature in a fault scene is smaller than or equal to 45 DEG C, and the safety protection level is improved by more than three times compared with a traditional package.

The utility model discloses an assembly type building chaining assembly which comprises a bottom plate, a plurality of assembly plates and a top plate, two vertical holes are formed in the bottom plate, the plurality of assembly plates and the top plate respectively, according to the assembly type building chaining assembly, reinforcing steel bars penetrate through the vertical holes in the bottom plate, the plurality of assembly plates and the top plate, and the assembly type building chaining assembly is formed. The short edge of the L-shaped edge of the steel bar is located in an inner cavity of the transverse groove, then the connecting plate is moved, the connecting plate drives the limiting rod to move, the limiting rod penetrates through the adjacent through hole and the limiting groove, and then the screw is moved, penetrates through the penetrating hole and is screwed in an inner cavity of the screw hole, so that the connecting plate is fixed, and then the steel bar is fixed. By means of the arrangement, the shock strength of later connection is improved, the construction speed is increased, meanwhile, rigid connection of the wall is improved, cracking and collapse of the wall are avoided, and cost loss and danger of constructors are reduced.

Actuator (1) comprising a motor (2) and an actuator component (3) actuated by the motor (2), the actuator component comprising a movable gear component (4) with a first and a second stop component (5a, 5b), and a stop element (6) with an inner and an outer reference plane (6a, 6b) serving to stop the stop components (5a, 5b) of the gear component (4), wherein the stop element (6) and / or the first and / or the second stop component (5a, 5b) is / are made of a high-temperature plastic, characterized in that the high-temperature plastic of the stop element (6) and / or the first and the second stop component (5a, 5b) and / or the bayonet interface (7) has a modulus of elasticity of at least 17,500 N / mm², a tensile strength of at least 220 N / mm², an elongation at break of at least 2 N / mm², and an impact strength of at least 80 kJ / m2 and has an impact strength of at least 80 kJ / m2.

The application discloses a calculation method and system for deformation and failure modes of front and rear panels under fragment impact, and belongs to the technical field of impact dynamics and structure protection. In view of the hydrodynamic ram effect caused by high-speed fragment impact, three core parameters of dimensionless impact strength Π1, water-impact wave strength Π2 and cavitation extrusion load strength Π3 are constructed, which respectively represent three kinds of mechanical mechanisms of direct impact of fragments, bending driven by shock waves and extrusion of cavitation expansion. A quantitative criterion of the failure modes of the front and rear panels and the product of Π1 and Π3 is established, and three kinds of failure modes of shear impact, petal break and petal tearing are divided. Meanwhile, a linear model of local deformation and Π1, and a binary linear model of global deformation and Π2 and Π3 are established. The method does not need complex simulation, and the evaluation can be completed in seconds, the calculation efficiency is greatly improved, the prediction accuracy is greater than or equal to 93%, and is suitable for the impact resistance design and safety evaluation of liquid storage structures such as liquid tanks and oil tanks.

A kind of anti-pressing multiple explosion-proof explosion door, be provided with explosion door body, the explosion door body is divided into front explosion door body and rear explosion door body, explosion space is arranged between the front explosion door body and rear explosion door body, the front explosion door body and rear explosion door body are provided with door body frame for fixing, the door body frame is provided with assembly component for further and wall assembly, front explosion door body and rear explosion door body and intermediate explosion space constitute the energy dissipation system of certain space, explosion shock wave is sequentially deformed through outer door body, realizes explosion-proof energy step-by-step attenuation, cooperation cross locking system formed by locking screw and transverse bolt, locking screw top drive motor is equipped with torque sensor, can dynamically adjust locking force according to impact intensity, under explosion overpressure, locking screw is forced to tighten by drive motor, so that door body and locking platform form rigid constraint.

The utility model discloses an engine cover foot pad installation structure, an engine cover and an engine. The installation structure comprises cover supporting feet and a rubber pad. The cover supporting leg comprises a bottom plate, a baffle and a side plate, the baffle is arranged above the bottom plate, a through hole is formed in the middle of the bottom plate, the bottom plate, the baffle and the side plate define a containing cavity with an assembly opening, and the rubber pad is arranged at the through hole of the containing cavity; the rubber pad comprises a ball head part and an annular part, the annular part is connected to the ball head part in a surrounding manner, and the top surface of the ball head part is higher than that of the annular part; a groove located above the ball head part is formed in the lower surface of the baffle, and the top end of the ball head part extends into the groove. The utility model has the advantages that: when the cover support leg is impacted, surface pressure can be applied to the top surface of the ball head part, linear pressure is avoided, the shock resistance of the rubber pad is enhanced, the cover support leg adapts to higher impact strength during assembly, and the rubber pad is prevented from being crushed.

The utility model discloses a controllable shock absorber, and relates to the technical field of shock absorbers. The controllable shock absorber comprises an outer frame, a base arranged on the inner bottom face of the outer frame, a top seat arranged in the outer frame in a sliding mode, a hanging rod arranged between the base and the top seat and a shock absorption spring arranged between the base and the top seat, and the end, extending to the lower portion of the outer frame, of the hanging rod is connected with equipment such as a pipeline. According to the device, the adjusting block and the adjusting screw rod are arranged at the outer frame of the hanging type shock absorber, so that the moving range of the top seat in the outer frame can be adjusted and controlled, then the deformation quantity of the shock absorption spring connected to the top seat is correspondingly adjusted and controlled, and therefore the requirements for different shock absorption strengths of the shock absorption spring are met; and the deformation paths of the adjusting block and the damping spring are limited, so that the damping spring is prevented from deforming, and the damping effect of the hanging type damper is guaranteed.

The application belongs to the technical field of refrigeration type infrared detector, and particularly relates to a cold disc structure capable of improving imaging quality of a refrigeration type infrared detector. A buffer part is arranged on the cold disc to buffer shock waves generated by back-and-forth reciprocating movement of a refrigeration cylinder cold accumulator, so that the impact strength of the cold accumulator on the cold disc is minimized, and then, shaking of a substrate and an infrared detector chip above the cold disc caused by the shock waves is avoided, refrigeration type infrared detector imaging picture fluctuation is avoided, and refrigeration type infrared detector imaging resolution is improved. In the early stage without adding parts, only optimization design is needed for the existing cold disc structure, so that the effect of obviously improving imaging picture shaking can be achieved, and the cold disc structure has a good application prospect.

The utility model relates to the technical field of concrete anti-seismic detection, and discloses a concrete anti-seismic strength detection device. The concrete shock strength detection device comprises a base, limiting discs are fixedly installed on the front side and the rear side of the base, electromagnets are fixedly installed in the limiting discs, a limiting plate is installed above the base in an embedded mode, and a supporting plate is movably installed above the base through balls. When the right permanent magnet is attracted by the electromagnet, the right permanent magnet can drive the supporting plate to move towards the right side through the transmission block, when the left permanent magnet is attracted by the left electromagnet and the right permanent magnet is repulsive by the electromagnet, the supporting plate can be driven to move towards the left side through the transmission block, and the magnetic pole direction of the electromagnet is controlled by switching the current direction. By means of the mode, the movement direction of the supporting plate can be rapidly adjusted, and the vibration strength is improved.

The utility model relates to the technical field of shock absorber, and disclose a shock absorber with adjustable shock strength for motorcycle, including the outer tube, the inner tube is fixedly connected with the outer tube inner wall, the outer tube top is fixedly connected with the sealing block, the sealing block top is provided with the piston rod, the piston rod bottom fixedly connected with the piston, the piston rod surface is provided with the adjusting mechanism, the piston rod surface is close to the top and is provided with the limit mechanism, the adjusting mechanism includes the fixed plate, the fixed plate fixedly connected in the piston rod surface. Through the design of adjusting mechanism, the flexible adjustment of shock strength is realized. The user can change the pre-tightening force of the shock spring by operating the moving plate and the fixed rod according to the actual riding demand, so as to adjust the hardness of the shock absorber. This design makes the motorcycle maintain the best shock absorption effect under different road conditions and load conditions, improves the comfort and safety of riding.

The transverse shock absorber applied to the motor train unit comprises a shock absorption carrier plate, four shock absorption mechanisms are installed at the bottom end of the shock absorption carrier plate, the four shock absorption mechanisms are distributed at the bottom ends of the four corners of the shock absorption carrier plate, each shock absorption mechanism comprises a landing seat, and the landing seats are tightly attached to the ground; a first arc groove block is installed at the upper end of the floor base, a groove hole is formed in the first arc groove block, a first anti-falling block is installed at the left end of the first arc groove block, a second anti-falling block is installed at the end, away from the first anti-falling block, of the first arc groove block, a second arc groove block is installed over the first arc groove block, and an arc groove is formed in the second arc groove block. According to the shock absorption device of the mechanical equipment, the shock absorption mechanism is arranged, the shock absorption mechanism can achieve the effective shock absorption effect by means of the particularity that an elliptical ball is matched with an arc-shaped groove, the mechanical shock strength is reduced, and meanwhile the situation that parts on the mechanical equipment are affected by shock and fall all around can be avoided.

This utility model relates to a multi-stage shock-absorbing piston rod, comprising a piston rod, a primary cylinder, a secondary cylinder, a primary spring, and a secondary spring. A first piston is located at the lower end of the piston rod, and a second piston is located on the outer wall of the lower end of the primary cylinder. The piston rod is slidably mounted in the primary cylinder via the first piston, and the primary cylinder is slidably mounted in the secondary cylinder via the second piston. Both the primary and secondary cylinders are filled with hydraulic oil. A first support plate is located at the upper end of the piston rod, and a second support plate is located at the upper end of the primary cylinder. The primary spring is sleeved on the piston rod and abuts against the first and second support plates, respectively. The secondary spring is sleeved on the primary cylinder and abuts against the second support plate and the secondary cylinder, respectively. The advantages of this utility model are: it possesses multi-stage damping, capable of automatically adjusting the damping magnitude according to different impact intensities and road conditions, balancing comfort and stability.