22results about How to "Adjustable stiffness" patented technology

The invention relates to the technical field of electric vehicles, and discloses a universal pure electric vehicle platform lower vehicle body, an auxiliary frame and a suspension, and the lower vehicle body comprises an engine compartment assembly, a front floor threshold assembly and a rear floor assembly; a left front longitudinal beam assembly and a right front longitudinal beam assembly which are used as universal parts in the engine compartment assembly are universal with point coordinates of mounting holes corresponding to the front auxiliary frame; a left doorsill assembly and a right doorsill assembly, which are used as universal parts, in the front floor doorsill assembly are universal with point coordinates of mounting holes corresponding to the battery power module; in the rear floor assembly, a left rear longitudinal beam assembly and a right rear longitudinal beam assembly which are used as universal parts are universal with the point coordinates of the corresponding mounting holes of the rear auxiliary frame with the suspension assembly; point coordinates of mounting holes corresponding to the front suspension and the front auxiliary frame are universal; the point coordinates of the mounting holes of the rear suspension and the rear auxiliary frame with the suspension assembly are universal, so that the mutual assembly modes of the lower vehicle body, the auxiliary frame and the suspension are kept consistent.

The invention discloses a paper folding type piezoelectric energy collector for collecting low-frequency energy. The paper folding type piezoelectric energy collector comprises a piezoelectric composite material paper folding cylindrical structure and two side end faces. The piezoelectric composite material origami cylindrical structure is obtained by bending and folding a planar piezoelectric composite material along a peak fold line and a valley fold line. In the bending process, the bent piezoelectric ceramic composite material can be manufactured by controlling external force in the sintering process. According to the invention, piezoelectric ceramic 3D printing is combined with a novel material inspired by paper folding. The piezoelectric ceramic suspension is used as 3D printing ink. The novel material structure is based on a Kresling origami cylindrical surface, but creases are hidden, the effective collection area is increased, and the electrical performance is improved. The multi-stable Kresling origami structure has low rigidity and a low energy barrier, so that energy collection in a low-frequency environment becomes possible, and the multi-stable Kresling origami structure is particularly suitable for ocean wave energy collection application.

The invention discloses a tunnel-pile interaction experiment method and device based on a 3D printing technology, and belongs to the technical field of civil engineering underground structure tests. The method comprises the steps that the geometric and mechanical similarity ratio is determined according to an engineering prototype, a tunnel lining model and a pile group model are prepared through the 3D printing technology, and controllable adjustment of the rigidity of the tunnel model is achieved by adjusting the type, the filling rate and the internal structure of a printing material; controllable adjustment of the rigidity of the pile foundation model is realized by adjusting the size of the magnetic field; the model is placed in a soil body groove, the shield tunnel excavation process is simulated, and deformation data of a tunnel and a pile foundation are collected through a PIV technology and a sensor. Accurate control over the rigidity of the tunnel and pile foundation model is achieved through 3D printing, the influence of shield tunnel construction on the pile group foundation can be simulated under the condition that the similarity criterion is met, and the device has the advantages of being adjustable in structure, high in experiment efficiency and the like and can be used for researching a dense urban area tunnel-pile deformation coupling mechanism and optimizing related engineering parameters.

The utility model relates to the technical field of biomimetic robots, in particular to a tensegrity biomimetic robot which comprises a first pressing rod, a second pressing rod, a third pressing rod, a fourth pressing rod, a fifth pressing rod, a sixth pressing rod, a plurality of drivers and a controller, the controller is located in the middle of a geometry formed by the pressing rods and electrically connected with the drivers, and inhaul cable assemblies are further installed between the drivers. According to the bionic robot, various forms can be changed, and the adaptability of the bionic robot is improved.

The utility model discloses a self-balancing splayed screen supported by air springs, relates to the technical field of vibrating screens, and aims to solve the problems that parts are seriously damaged, the machining precision is uncontrollable and the strength is seriously reduced under long-term efficient operation in the prior art. A first discharging port and a second discharging port are formed in the two sides of the screen box respectively, screen cloth in the screen box is arranged in a splayed shape, vibrating mechanisms are arranged on the two sides of the screen box, a base is arranged below the screen box and connected with the screen box through an air spring, a piston is slidably connected into the air spring, and a push rod is arranged on the piston and connected with the bottom of the screen box. According to the vibrating screen, due to the fact that the air spring is arranged, the pressure difference exists on the two sides of the piston during vibration, damage and abrasion to the internal structure of a part are reduced, the ultrasonic sensor is arranged, automatic leveling of the screen is achieved, and the supporting rigidity can be adjusted when necessary.

The utility model provides a structure for suppressing bounce of a circuit breaker, and belongs to the technical field of high-voltage circuit breakers. Comprising an upper porcelain bottle, an upper outgoing line, an arc extinguish chamber, a lower outgoing line, a lower porcelain bottle and an insulating pull rod, and a bounce buffer suppression assembly is arranged between the upper porcelain bottle and the upper outgoing line and used for absorbing excess energy during switching-on and reducing switching-on bounce time. According to the utility model, the problem that the closing bounce time of the high-voltage circuit breaker exceeds the standard is solved, and on the premise that the mounting structure of the arc extinguish chamber is not changed, redundant energy during closing is absorbed and the closing bounce time is reduced by additionally arranging the bounce buffer suppression assembly on the wire outlet side under the condition that the over-travel of the arc extinguish chamber is not changed; the structure is simple, the reliability is high, the service life of the arc extinguish chamber is effectively prolonged, and the closing stability of the circuit breaker is improved.

The invention discloses a semi-active anti-impact shock isolator based on a negative stiffness beam and belongs to the technical field of shock isolation, and the semi-active anti-impact shock isolator based on the negative stiffness beam is jointly composed of a rubber shock isolation layer, a rubber limiting layer, a negative stiffness interlayer beam and an MRE shock isolation layer. According to the invention, effective shock isolation and impact resistance can be carried out on a building structure under impact loads such as sudden collision or explosion; compared with a traditional rubber vibration isolator, the negative stiffness characteristic of the hyperbolic beam and the characteristic that the rigidity of the MRE vibration isolation layer is controllable are utilized, the hyperbolic beam and the MRE vibration isolation layer are connected in parallel, constant impact resistance can be obtained within a certain range, and a building main body structure can be better protected under impact loads such as collision and explosion; and impact energy can be further dissipated under the action of rapid impact.

The application relates to the technical field of robots, in particular to a one-body continuum manipulator for grabbing. The manipulator comprises a driving mechanism, a coupling manipulator arm body and a grabbing mechanism which are sequentially connected; the coupling manipulator arm body is provided with driving ropes which are circumferentially distributed; the coupling manipulator arm body comprises a flexible rod and a plurality of spherical friction bodies which are sleeved on the flexible rod; the plurality of spherical friction bodies are sequentially connected in a head-to-tail mode; a serpentine spring which is circumferentially distributed is arranged between adjacent spherical friction bodies; and the bottom of the coupling manipulator arm body is provided with an electromagnetic rigidity adjusting assembly which is used for adjusting the friction force of the plurality of spherical friction bodies to realize the rigidity adjustment of the coupling manipulator arm body. The one-body continuum manipulator for grabbing adopts the continuum joint of the coupling of the serpentine spring and the spherical friction body, realizes the rigidity adjustment, improves the load capacity under the condition of guaranteeing the flexibility.

This utility model discloses a novel improved ball mill device in the field of chemical equipment technology, comprising: multiple inner lining units, evenly spaced along the axial direction of the ball mill cylinder, each inner lining unit being formed by splicing multiple circumferentially distributed inner lining arc plates; multiple spring buffer assemblies, correspondingly disposed between the inner lining arc plates and the ball mill cylinder, for supporting the inner lining arc plates and providing elastic buffering to absorb the impact force of the grinding media and aluminum sheets on the inner lining arc plates; wherein, the spring buffer assembly includes multiple first spring columns, multiple second spring columns, and a switching mechanism, the first spring columns and second spring columns being staggered along the axial direction in the back support area of ​​the inner lining arc plates. This device adopts a dual-stiffness spring switching mechanism to achieve dynamic control of the support rigidity during grinding, balancing flattening efficiency and sheet shape protection, effectively reducing the breakage rate and edge curling of the aluminum sheets during the grinding process.

A hydraulic suspension apparatus and a hydraulic suspension system (1000) and a vehicle having same are provided. The hydraulic suspension apparatus includes a liquid storage apparatus and a reducer (200). The liquid storage apparatus is arranged on a vehicle body and is configured to store oil. The reducer (200) has a reducer housing (201), a piston (202), and a piston rod (203). The reducer housing (201) is connected to an axle. The piston (202) is located in the reducer housing (201) and fits the reducer housing (201) to define an upper chamber (2011) and a lower chamber (2012). An end of the piston rod (203) is connected to the piston (202). The piston rod (203) is connected to the vehicle body. An oil channel (204) is provided in the piston rod (203). The oil channel (204) is communicated with the lower chamber (2012) and the liquid storage apparatus, to make oil flowable between the liquid storage apparatus and the lower chamber (2012).

This invention provides an air suspension structure, including an air spring. The air spring includes a piston, a base, and an air bladder fixed between the piston and the base, all movably connected to the vehicle's longitudinal beam. The base of the air spring is fixed to a lower control arm. A cavity communicating with the air spring is provided inside the lower control arm, and a solenoid valve for controlling the gas flow between the air spring and the cavity of the lower control arm is installed within the cavity. This air suspension structure, by providing a cavity inside the lower control arm and adding a solenoid valve within the cavity, controls the gas flow between the air spring and the cavity of the lower control arm. This not only allows for adjustable air spring stiffness, improving overall vehicle comfort, but also solves the problems of large radial dimensions, large space occupation, and large weight of existing air springs. It also allows for easier placement of the air spring between the vehicle's longitudinal beam and the lower control arm, and improves overall vehicle performance by adding a cavity to the lower control arm.

A hydraulic suspension apparatus and a hydraulic suspension system (1000) and a vehicle having same are provided. The hydraulic suspension apparatus includes a liquid storage apparatus and a reducer (200). The liquid storage apparatus is arranged on a vehicle body and is configured to store oil. The reducer (200) has a reducer housing (201), a piston (202), and a piston rod (203). The reducer housing (201) is connected to an axle. The piston (202) is located in the reducer housing (201) and fits the reducer housing (201) to define an upper chamber (2011) and a lower chamber (2012). An end of the piston rod (203) is connected to the piston (202). The piston rod (203) is connected to the vehicle body. An oil channel (204) is provided in the piston rod (203). The oil channel (204) is communicated with the lower chamber (2012) and the liquid storage apparatus, to make oil flowable between the liquid storage apparatus and the lower chamber (2012).

The application discloses a high-voltage bushing transport adjustable damping type shock-absorbing support frame and relates to the technical field of high-voltage bushing transportation.The high-voltage bushing transport adjustable damping type shock-absorbing support frame comprises a support and a shock-absorbing component, each shock-absorbing component comprises a base, the base is supported on a mounting base surface, a spring seat, the spring seat is arranged above the base and fixed on the support, a coil spring, the coil spring is connected with the base and the spring seat at two ends respectively, and a damper, the damper comprises a pressure cylinder and a flow rate regulating valve, the pressure cylinder is arranged in the coil spring in a spaced mode, a cylinder body of the pressure cylinder is fixed on the base, a piston rod top end is fastened with the spring seat through locking pieces, and the flow rate regulating valve is installed on a fluid passage of the pressure cylinder to regulate the flow rate of fluid in and out of the pressure cylinder.Through the flow rate regulating valve, the flow rate of fluid in the pressure cylinder can be regulated, the rigidity of the pressure cylinder is further regulated, the damping size of the coil spring is regulated, different transportation conditions can be adapted, and the safety and stability of the high-voltage bushing transportation process are ensured.

An anisotropic seismic isolation rubber bearing includes a bearing core and an inner connecting steel plate connected to the end surface thereof, wherein the bearing core includes a main body layer and an adjustment layer located at the end surface of the main body layer, wherein the adjustment layer includes N layers of functional adjustment steel plates that overlap with the adjustment rubber layer, and n straight grooves are provided on the adjustment layer, thereby dividing the adjustment layer into n-1 or n+1 adjustment units; n functional blocks are connected to the side of the inner connecting steel plate opposite to the adjustment layer, and the positions of the functional blocks correspond to the positions of the straight grooves and cooperate with the gaps of the straight grooves. The seismic isolation rubber bearing has a simple structure, a scientific design, and a clear seismic isolation mechanism. By adjusting the number of layers of the adjustment layer and the number of functional blocks, the displacement, stiffness, and damping of the bearing in all directions can be adjusted, so that the seismic isolation rubber bearing has anisotropic functions, thereby further optimizing the size and reinforcement of the piers according to the transverse and longitudinal cross-sectional characteristics of the bridge and the requirements of the seismic structure, thereby saving construction costs.

The utility model relates to an air spring vibration isolator guide mechanism which comprises an outer cylinder, a stable vibration isolation mechanism is arranged in the outer cylinder, an auxiliary assembly is arranged in the outer cylinder, the stable vibration isolation mechanism comprises a mounting plate fixedly connected with the inner bottom wall of the outer cylinder, the top of the mounting plate is fixedly connected with a guide column, and the guide column is fixedly connected with the outer cylinder. A movable plate is slidably connected to the outer side of the guide column, an air spring body is fixedly connected between the movable plate and the mounting plate, a bearing column is fixedly connected to the top of the movable plate, and a bearing plate is fixedly connected to the top of the bearing column. The air spring vibration isolator guide mechanism can be matched with a guide structure to enable the stress of an air spring body to be uniform, and is matched with a return assembly to enhance the elasticity in the air spring body, so that the air spring body can easily recover to the original shape after being used for a long time under the condition of preventing bending, the pressure bearing capacity of a device is improved, and the service life of the device is prolonged. The practicability of the device is enhanced.

This invention relates to the field of building structure technology, specifically to an anti-pull-out device. It includes an upper anchor, an upper sliding plate assembly, a hydraulic damper, a lower anti-pull-out assembly, a lower sliding plate assembly, and a lower anchor. The hydraulic damper's cylinder has an upper end cap sealed at one end and a lower end cap sealed at the other. A piston and a stiffness-adjustable medium are slidably disposed within the cylinder. An external pressure control component, capable of flowing from bottom to top, is embedded in the upper end cap, and a built-in pressure control component, capable of flowing from top to bottom, is embedded in the piston. This invention solves the problem of vertical gaps appearing in the anti-pull-out device due to reduced installation height, leading to impact loads and device or structural damage during tensile testing.

The present invention relates to a low-vibration high-frequency modal vehicle body structure, comprising a vehicle body base plate (1), a modal adjustment rib (2), and a composite damping layer (3), wherein the modal adjustment rib (2) is arranged on the vehicle body base plate (1) according to the modal adjustment stiffness and position, and is rigidly connected to the vehicle body base plate (1); the composite damping layer (3) is composed of a sound absorbing layer (4), a constraint layer (5), a damping layer (6), and a bonding layer (7) from the outside to the inside, wherein the bonding layer (7) is bonded to the vehicle body base plate (1). Compared with the prior art, the present invention fully considers the structural vibration of the vehicle and the structural noise characteristics caused by the vibration and the frequency effectiveness of damping vibration reduction and noise reduction control, and proposes a low-vibration high-frequency modal vehicle body structure that can effectively reduce structural noise based on the structural characteristics of various types of special vehicles.

This utility model belongs to the field of seismic isolation and vibration reduction technology for bridge structures, and specifically relates to a shear energy-dissipating steel truss connecting beam for replaceable railway piers. It includes several steel truss connecting beam units, spaced apart along the height of the pier column. At the same height position, there are four steel truss connecting beam units, each positioned between adjacent pier columns. Each steel truss connecting beam unit includes horizontally arranged upper and lower chords, and at least one set of intersecting diagonal web members between the upper and lower chords. The chords are structural members designed to prevent instability of the outer web members of the pier column. The web members mainly bear axial forces and reduce seismic response by dissipating energy through tensile and compressive deformation. This structure dissipates energy through plastic deformation and yielding, thereby protecting the pier column and achieving a graded energy dissipation effect. Furthermore, the steel truss connecting beam system is easy to replace after damage, and the replaced pier can immediately resume normal use, playing an important role in post-earthquake repair and operation of bridges.

The present application belongs to the technical field of vehicle shock absorption, and specifically relates to a variable damping and variable stiffness oil-gas spring device for heavy-duty vehicles. The present patent proposes a variable damping and variable stiffness oil-gas spring device for heavy-duty vehicles, which is designed with an electrically controlled proportional throttle valve with continuously adjustable damping port opening, so as to realize continuous, real-time and stepless adjustment of the damping characteristics of the suspension device, and is designed with a nitrogen chamber with variable pressure to balance the stiffness characteristics of the heavy-duty vehicle under different load conditions, thereby ensuring the comfort and stability of the heavy-duty vehicle under different load conditions and road conditions.

The invention discloses a rigidity-adjustable buffer pad for a damping system of a compressor of a new energy commercial vehicle. An upper buffer pad is formed by vulcanizing an upper buffer pad stainless metal framework, a lower wear-resistant layer framework and a rubber body; the lower buffering cushion is formed by vulcanizing a lower buffering cushion stainless metal framework, a lower buffering cushion upper flanging framework and a rubber body, the upper flanging framework is embedded into the rubber body after being vulcanized, outer layer rubber coating is achieved, the product appearance is improved, and the anti-rust capacity of the frameworks is improved. The height size of the central pipe is 3 mm shorter than that of the cushion pads in a natural state after the cushion pads are assembled, the upper cushion pad, the lower cushion pad and the central pipe form a whole after the whole vehicle is assembled and tightened, the rubber body bears certain compression, and the fatigue life of the cushion pads is prolonged. The inner walls of the rubber bodies of the upper buffer cushion and the lower buffer cushion are arranged to be conical surfaces, and a gap of 1mm is formed between the inner walls and the outer circle of the central pipe, so that the central pipe is convenient to assemble, meanwhile, the transverse rigidity of the buffer cushions can be reduced, rigidity matching of a whole compressor vibration reduction system is integrally realized, and the NVH performance of a whole vehicle is improved.

The utility model relates to a rigidity adjustable bushing for an automobile, which comprises a metal inner pipe, a first rubber body, a second rubber body, a conductive coil, a magnetorheological elastomer, a metal outer pipe, a first cover plate and a second cover plate, the metal inner pipe comprises a first end part, a middle part and a second end part which are sequentially arranged along the axial direction of the metal inner pipe, the first rubber body is sleeved on the periphery of the first end part, and the second rubber body is sleeved on the periphery of the second end part. The periphery of the second end portion is sleeved with the second rubber body, the periphery of the middle portion is wound with the conductive coil, the periphery of the conductive coil is sleeved with the magneto-rheological elastomer, the periphery of the magneto-rheological elastomer is sleeved with the metal outer pipe, and the first cover plate is connected with one end of the metal outer pipe and at least shields one side end face of the metal outer pipe, one side end face of the magneto-rheological elastomer and one side end face of the conductive coil. The second cover plate is connected with the other end of the metal outer pipe and at least shields the metal outer pipe, the magnetorheological elastomer and the end face of the other side of the conductive coil. The rigidity of the automobile seat cushion is adjustable, and the automobile seat cushion can provide more excellent supporting performance and comfort for an automobile under different road conditions and can be prevented from being damaged during overload.

This invention discloses an adaptive buffer structure based on tungsten alloy and its preparation method, belonging to the field of buffer structure technology. It solves the technical problem that existing solutions using a single homogeneous material structure lack the deformation coupling energy absorption capacity of composite material structures. The structure includes a main frame and at least one buffer node connected to the main frame. Each buffer node comprises an energy-absorbing part and a supporting part, which are stacked. Through this stacked composite structure, the buffer node achieves graded energy absorption, significantly improving energy absorption efficiency compared to traditional single buffer structures and drastically reducing initial peak force, effectively coping with multi-load coupling conditions. It also possesses high rigidity, high toughness, and extremely rapid thermoelectric response characteristics, enabling adaptive stiffness adjustment according to changes in external loads, achieving a technological upgrade from passive load bearing to active protection.