37 results about "Shock strength" patented technology

The utility model discloses an anti-impact water conservancy retaining wall, which relates to the technical field of water conservancy projects, and comprises a main body, the surface of the main body is fixedly connected with a mounting plate, the surface of the mounting plate is provided with a buffer plate, the main body is internally provided with a buffer part, and the buffer part comprises a motor mounted in the main body; the two ends of the transmission shaft are rotationally connected with positioning blocks, and the bottoms of the positioning blocks are fixedly connected with the body. According to the impact-resistant water conservancy retaining wall, the buffering pieces and the arc-shaped plates are arranged, the flowing form of water flow can be changed, resistance is increased, the flow speed is reduced, and compared with direct impact on the retaining wall, the flow speed is reduced, so that the impact force can be reduced, and the impact strength of the water flow on the retaining wall is reduced; and the problem that the retaining wall with relatively low strength can cause collapse of the water conservancy project and endanger the life and property safety of surrounding personnel is further solved.

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.

A conveyor belt, including: a band nucleus body; and a rubber cover that covers the core of the tape; wherein the cover rubber is formed with an impact resistance performance rating index value which is a product of an elongation at break Eb, a tensile strength TSb and a loss tangent tan δ of a predetermined value or greater; and wherein a measurement condition of the loss tangent tan δ is determined on the basis of a velocity of an impact applied under an operating condition of the conveyor belt, where the loss tangent tan δ is a ratio between a memory module and a loss modulus calculated from a voltage when vibrations of a predetermined frequency are applied to the cover rubber; the measurement condition is the predetermined frequency; and The predetermined frequency is determined by adjusting the speed of an impact exerted under the operating conditions of the conveyor belt to a maximum vibration speed. where if the shock resistance performance rating index value, calculated using the loss tangent tan δ at the predetermined frequency of 10 kHz, is 6000 or greater.

The utility model discloses a spacer ring damping type bullet pushing rod, and belongs to the technical field of shock waves, and the bullet pushing rod comprises an upper push rod, a middle push rod, a lower push rod and a lead screw which are sequentially connected from front to back; the front end face of the upper push rod is an abutting face used for pushing a load. The upper push rod comprises a plurality of spacer ring shock wave unloading sections which are arranged in sequence; the spacer ring shock wave unloading section is sleeved with the multiple spacer rings of an annular structure side by side, the radial positions and the axial positions of the multiple spacer rings are fixed, and the spacer rings are made of metal. The problems that in the prior art, due to the fact that the strength of the bullet pushing rod is low, the bullet pushing rod is prone to being scrapped, and the driving motor is damaged are solved. The spacer ring absorbs energy of shock waves through deformation and friction force generated by the spacer ring and the inner wall of the cavity pushed by the elastic pushing rod, so that the impact strength of the elastic pushing rod is improved, and the service life of the elastic pushing rod is prolonged.

The invention relates to the field of building construction protection, and discloses an anti-seismic protection device for a building cross beam and an inclined support determining method.The device comprises an energy absorption structure, and the energy absorption structure is connected with the building cross beam; the bottoms of the two connecting supports are connected to the two ends of the energy absorption structure respectively, the tops of the two connecting supports are riveted to a building floor slab, each connecting support comprises a vertical support and an inclined support, and a set included angle is formed between each vertical support and the corresponding inclined support and is obtained based on a genetic algorithm. The method for determining the inclined support is used for determining the length L of the inclined support in the anti-seismic protection device for the building cross beam and the set included angle between the inclined support and the vertical support. The energy absorption structure has the beneficial effects that the energy absorption structure is used for absorbing force borne by the building cross beam, so that the protection effect on the building cross beam is ensured, and the shock strength of a building is ensured.

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 relates to the technical field of hollow bricks, in particular to an anti-seismic sintered hollow brick which comprises a brick body, a plurality of noise reduction grooves are formed in the top end of the brick body, a plurality of connecting blocks are installed on one side of the brick body, and a plurality of rectangular grooves are formed in the other side of the brick body. When brick bodies need to be connected with one another, firstly, the connecting columns are clamped into the inner cavities of the limiting holes, the connecting blocks are located in the middles of the rectangular grooves, cement is injected into the inner cavities of the rectangular grooves and the limiting grooves at the moment, and after the cement is solidified, the brick bodies are connected through the limiting grooves. When the brick bodies are mutually connected, one side of the cement inner cavity firmly hooks one side of the connecting block, cement in the inner cavity of the limiting groove can limit cement in the inner cavity of the rectangular groove, and therefore the connecting stability and the shock strength between the brick bodies are improved, meanwhile, when the brick bodies are mutually connected, a user can select a connecting mode according to the height of a wall built by the brick bodies, and the connecting efficiency is improved. For example, connection is performed from left to right or from top to bottom.

The utility model relates to the technical field of logistics equipment, in particular to an anti-collision device for protecting a material transporter, which comprises a base. Guide rails symmetrically distributed front and back are fixedly connected to the upper end of the base, the magnetic buffer assemblies are arranged in the guide rails and comprise first magnets and second magnets, guide columns are inserted into the second magnets, and specific damping springs are installed on the outer sides of the guide columns. The lower ends of the second magnet and the other second magnet are fixedly connected with a moving plate, the right end of the moving plate is sequentially and fixedly connected with a spring damping shock absorber and a mounting seat, the interiors of concave positions on the front side and the rear side of the right end of the base are fixedly connected with contact switches, and the left end of the moving plate is fixedly connected with protrusions in one-to-one correspondence with the contact switches. The multi-stage buffer mechanism is arranged, impact force is dispersed and released in a long time, the impact strength on the material transporter is effectively reduced, the overall size is small, and feeding and discharging of materials are not affected.

The present invention relates to the technical field of automobile structure impact resistance test, and specifically to an impact resistance strength detection device for a four-beam assembly of a vehicle's lower end safety body, comprising a bottom plate, a lifting groove is provided on the top of the bottom plate, an electric lifting plate is fixedly connected inside the lifting groove, a plurality of supporting rotating seat groups are fixedly connected to the top of the electric lifting plate, a carrier frame is connected to the top of the supporting rotating seat group, a guide rail is fixedly connected to the inner side wall of the carrier frame, a booster assembly is arranged inside the carrier frame, the booster assembly comprises a slider and a plurality of roller groups, a limiting block is fixedly connected to the two side walls of the slider, the limiting block is slidably connected in the guide rail, and the rollers are installed on both sides of the slider; compared with the prior art, the present invention can perform comprehensive and diversified detection on the vehicle as a whole, so as to obtain more sufficient and diverse impact resistance data of the four-beam assembly of the vehicle's lower end safety body.

The utility model discloses a wheel cover structure with an adjustable wheel cover positioning ring and a wheel. The wheel cover structure comprises the positioning ring and a wheel cover body. A plurality of evenly-distributed adjusting areas are arranged on the wheel cover body in the circumferential direction. An adjusting part is arranged on the adjusting area; the positioning ring is located on one side of the wheel cover body, and the circumferential direction of the positioning ring is the same as that of the wheel cover body. The positioning ring is adjustably installed on the wheel cover body through the adjusting piece. The wheel comprises the wheel cover structure. The adjusting area is arranged on the wheel cover body, the adjusting part is arranged on the adjusting area, and the adjusting part can adjust the fastening degree of the positioning ring installed on the wheel cover body, so that the positioning ring can effectively enhance the shock strength of the wheel cover; according to the automobile wheel cover, the production cost of the automobile wheel cover can be reduced, and meanwhile, the overall reliability and safety of the wheel cover structure can be improved.

The invention relates to the technical field of gear tooth surface contact fatigue damage repair, in particular to a gear tooth surface contact fatigue damage repair device which comprises a pulse laser and a universal bamboo joint pipe, and a gear is driven by a driving component to rotate around the axis of the gear; a water outlet nozzle is fixedly arranged at the water outlet end of the universal bamboo joint pipe and provided with a front water outlet capable of discharging flat water flow. The pulse laser device and the universal bamboo joint pipe are driven by the same mechanical arm to move synchronously, so that laser beams emitted by the pulse laser device can form light spots on teeth of the gear, and the front water outlet extends into the position between every two adjacent teeth. The water outlet nozzle comprises a flat pipe, a flat drainage part and an elastic extrusion part. The water restraint layer can better restrain expansion of plasma, formed shock waves can be more effectively spread into the target material, the impact strength borne by the repaired position can be kept basically consistent, and the workpiece repairing effect is good.

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.

A fastening device (100) for a vehicle part (18) is proposed. The fastening device (100) comprises a sheet metal strip (20) with an opening (24) and a frame (22) that can be attached to the sheet metal strip (20). The frame (22) has at least one notch (13) with a rear wall and at least one side wall, a hook (10) arranged in the rear wall of the notch (13), and at least one clip device (12a, 12b) arranged in the at least one side wall of the notch (13). The hook (10) defines an engagement direction (z) and is configured to engage in the opening (24) of the sheet metal strip (20). The notch (13) is arranged in a butt direction (x) perpendicular to the engagement direction (z).The notch (13) is designed to receive the sheet metal strip (20), in particular to receive it in a form-fitting manner, and to counteract movement of the frame (22) relative to the sheet metal strip (20) in the third spatial direction (y) perpendicular to the hooking direction (z) and the impact direction (x). Furthermore, the at least one clip device (12a, 12b) is designed to counteract movement of the frame (22) relative to the sheet metal strip (20) in the impact direction (x) up to a predefined impact force (S).

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 relates to a light-gas gun piston, in particular to a light-gas gun piston capable of testing missile-borne acceleration and pressure, and solves the technical problems that an existing light-gas gun piston acceleration and pressure measuring device is large in error and cannot acquire real-time speed. According to the utility model, the pressure sensor and the acceleration sensor are integrated in the piston shell, and the displacement and the acceleration process of the piston motion in the pump pipe and the pressure change parameters at the front end and the rear end are obtained by using data measured by the circuit assembly memory in a missile-borne storage and test mode, so that the structure is simple, the operation is simple and convenient; the experiment difficulty and the experiment cost are reduced; according to the shock-resistant piston, the piston shell, the compression screw cap, the shock-absorbing buffer material and the inner cavity form a two-layer shock-resistant protective structure, so that internal components can be protected, and the piston is ensured to have enough shock-resistant strength.

The shock absorber is characterized in that the shock absorber comprises a cylinder body, a piston rod, an oil storage piston and a spring, the piston rod is located in the cylinder body, a piston is arranged on the piston rod, the piston is located in the cylinder body, an oil passing hole is formed in the piston, the interior of the cylinder body is divided into an upper oil cavity and a lower oil cavity by the piston, and the upper oil cavity and the lower oil cavity are communicated through the oil passing hole; the oil storage piston is located in the cylinder body and located at the lower end of the cylinder body, a lower oil cavity is formed between the oil storage piston and the piston, and the spring is arranged below the oil storage piston and provides support for the oil storage piston. Through combination of flowing of hydraulic oil and sliding of the oil storage piston, effective absorption and dispersion of impact energy are achieved. The flowing of the hydraulic oil plays a preliminary hydraulic buffering role, and the sliding of the oil storage piston under the action of the spring further enhances the buffering effect, so that the whole device can keep good buffering performance under different impact strengths.

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 spring shock absorber with high stability, which comprises a piston cylinder, a piston rod is slidably mounted in the piston cylinder in a damping manner, connecting seats are fixedly connected to the bottom of the piston cylinder and the top of the piston rod, and a spring is mounted between the two connecting seats. Limiting adjusting assemblies for limiting the springs are arranged on the connecting bases in a sliding and limiting mode, threaded grooves are formed in the opposite faces of the two connecting bases, and limiting covers for limiting the limiting adjusting assemblies are connected into the threaded grooves in a threaded mode. Through the arrangement of the connecting base, the limiting adjusting assembly and the limiting cover, the spring can be rapidly taken out for replacement, disassembly and assembly are convenient, and the maintenance efficiency is improved; and through the arrangement of the cylinder body, the blocking block, the screw rod and the nut, the damping strength of the damper can be freely adjusted, and the practicability of the damper is greatly improved.

The utility model discloses an anti-seismic performance enhanced prefabricated part connecting piece, and belongs to the technical field of buildings. The anti-seismic performance enhanced prefabricated part connecting piece comprises connecting steel and further comprises connecting grooves formed in the front end and the rear end of the connecting steel, connecting plates are connected into the connecting grooves in a clamped mode, the ends of the connecting plates extend to be provided with protruding blocks, and the outer walls of the protruding blocks abut against the inner walls of the connecting grooves; the joint bar is fixedly connected to the protruding block, the two ends of the joint bar extend into the connecting grooves respectively, the connecting grooves are filled with filling slurry, and the joint bar is wrapped with the filling slurry; concrete grout or epoxy resin grout in the filling cavity can be matched with the connecting ribs, the penetrating ribs and the inserting ribs after being solidified, so that certain pressure can be borne, the anti-seismic effect between the connecting plate and the connecting steel can be improved, the phenomenon that the concrete grout or the epoxy resin grout cracks is reduced, and the service life of the connecting plate is prolonged. The overall shock strength of the connecting plate is improved.

The utility model discloses a prefabricated groove-shaped plate and a prefabricated groove-shaped plate installation system, and relates to the technical field of constructional engineering. The prefabricated groove type plate comprises a prefabricated layer of a rectangular structure, rib beams extending downwards are arranged on the two sides of the prefabricated layer correspondingly, and plugging parts are arranged on the other two sides of the prefabricated layer and located between the two rib beams; the bottom edges of the two rib beams are provided with lifting lugs which are folded outwards; plate bottom load-bearing steel bars are arranged in the prefabricated layer, rib beam stirrups are arranged in the rib beams, and transverse bars of the corresponding plate bottom load-bearing steel bars are hooped and sleeved with the rib beam stirrups; truss ribs are further embedded in the prefabricated layer, and the top ends of the truss ribs and the top ends of the ribbed beam stirrups are higher than the embedded layer. According to the prefabricated trough plate installation system, building construction is conducted in a prefabricated hoisting and partial cast-in-place mode, the prefabricated parts of the system are high in standardization degree, convenient and fast to construct and good in integrity, the design concept equivalent to cast-in-place can be truly achieved, and the construction efficiency is improved on the premise that the shock strength is guaranteed.

The utility model discloses a novel grille, which mainly comprises a frame body, a grille group and a protection frame, the frame body is used for being inserted into a clamping groove of a filtering assembly so that liquid can flow into the other side from one side of the frame body, the grille group is arranged in the frame body and is used for blocking the part to be filtered in the liquid, and the protection frame is arranged on the upstream face of the frame body and is used for blocking the part to be filtered in the liquid. By means of the technical scheme, the efficiency of the grille can be effectively improved, large objects or impurities in water flow can be prevented from impacting the grille, shutdown operation does not need to be carried out during replacement due to the arrangement of the multiple groups of grilles, meanwhile, shutdown is not needed during cleaning, and the cost is reduced. And the qualified fluency of the working efficiency during the use of the equipment is further ensured.

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 belongs to the technical field of building walls, and particularly relates to an energy-saving building wall structure with high shock strength, which comprises a building wall body and a protective plate. The bottoms of the two sides of the building wall body are fixedly connected with bases correspondingly, and first damping assemblies are arranged at the centers of the front faces and the back faces of the two sides of the building wall body correspondingly. Through the structural design of a damper, a first sliding groove, a first sliding block, a first spring and a movable rod, the elastic effect of the first spring is used for damping a protection plate and buffering external force, so that the protection effect of the building wall body is improved, oscillation generated when the first spring and a second spring rebound is effectively restrained, and the service life of the building wall body is prolonged. The anti-seismic performance of the building wall body is improved through the reinforcing ribs, collapse of the building wall body during an earthquake is avoided, the damping and buffering effect on the protection plate is further improved through the structural design of the second springs and the supporting plate, and the protection performance of the building wall body is improved.

The invention discloses a device for detecting the shock strength of a house. The device comprises a detector, a handheld rod, a mounting seat and an adsorption assembly, the mounting seat is arranged at one end of the handheld rod, and the detector is detachably arranged on the mounting seat; the adsorption assembly is arranged in the mounting seat, a controller is arranged at one end, far away from the mounting seat, of the handheld rod, the controller is electrically connected with the adsorption assembly, and when the detector in the mounting seat reaches a to-be-detected position on the wall surface, the controller can be started to control the adsorption assembly to adsorb the wall surface. By arranging the handheld rod, a worker can lift the detector through the handheld rod so as to scan the middle part and the upper part of a wall body, so that the working efficiency is improved, and the detection difficulty is reduced; meanwhile, by arranging the adsorption assembly, when the detector reaches a to-be-detected position on the wall surface, the controller can be started to control the adsorption assembly to adsorb the wall surface, so that the mounting seat and the detector are prevented from shaking in the detection process, and the detection accuracy of the detector is improved.

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.

A fastening device (100) for a vehicle part (18) is proposed. The fastening device (100) comprises a sheet metal strip (20) with an opening (24) and a frame (22) that can be attached to the sheet metal strip (20). The frame (22) has at least one notch (13) with a rear wall and at least one side wall, a hook (10) arranged in the rear wall of the notch (13), and at least one clip device (12a, 12b) arranged in the at least one side wall of the notch (13). The hook (10) defines an engagement direction (z) and is configured to engage in the opening (24) of the sheet metal strip (20). The notch (13) is arranged in a butt direction (x) perpendicular to the engagement direction (z).The notch (13) is designed to receive the sheet metal strip (20), in particular to receive it in a form-fitting manner, and to counteract movement of the frame (22) relative to the sheet metal strip (20) in the third spatial direction (y) perpendicular to the hooking direction (z) and the impact direction (x). Furthermore, the at least one clip device (12a, 12b) is designed to counteract movement of the frame (22) relative to the sheet metal strip (20) in the impact direction (x) up to a predefined impact force (S).