10results about How to "Curb rebound" patented technology

The invention provides a layered negative electrode plate and a lithium ion battery thereof. The layered negative electrode plate comprises a current collector layer and an active layer with a layered structure, wherein the active layer is coated on the surface of at least one side of the current collector layer; the layered active layers of the negative plate respectively use binders which are compounded in different types and contents. On one hand, the styrene-acrylic emulsion and the EAA are compounded to serve as a binder of the first active layer close to one side of the current collector, the characteristics of high viscosity and high flexibility are fully played during compounding use, the cohesion of the active layer is reduced, and the risks of cohesion concentration and pole piece extension are reduced. On the other hand, PAA and SBR are compounded in the second active layer far away from one side of the current collector to serve as a binder, so that better mechanical performance and high cohesiveness can be provided, rebound of the pole piece is inhibited, the ductility of the pole piece is improved, and the structural stability of the pole piece is maintained to adapt to the volume change of the battery in the charging and discharging process; the electrochemical performance and the cycling stability of the battery are improved.

The utility model relates to the technical field of precast beam supporting, and discloses a precast beam supporting and positioning auxiliary device which comprises supporting beam columns, an adjusting and positioning base portion and a precast beam buffering supporting portion, and a precast beam is fixedly installed between the supporting beam columns. And the adjusting and positioning base part is arranged between the supporting beam columns. The impact force generated in the placing process of the precast beam and the influence caused by external vibration can be effectively buffered through the combination of the buffer springs and the damping telescopic rods, and when the precast beam falls or is vibrated, the buffer springs absorb part of energy through elastic deformation of the buffer springs; the damping telescopic rod further restrains rebound of the spring, the duration and amplitude of vibration are reduced, the precast beam is protected against damage, and the electric telescopic rod can adjust the height of the supporting cushion block according to actual needs so as to adapt to the height requirements of different precast beams and adjustment in construction.

An insulating pull rod for reducing bounce of a vacuum circuit breaker contact comprises an insulating body, a first metal sleeve and a second metal sleeve are embedded in the two ends of the insulating body respectively, the first metal sleeve is filled with damping particles, the damping particles are packaged in the first metal sleeve through a first pressing ring, and the center of the first pressing ring is fixedly connected with a first connecting rod; a spring is sleeved with the second metal sleeve, a second connecting rod is installed in the second metal sleeve in a pressed mode through a second pressing ring, the upper portion of the second connecting rod abuts against the top of the spring, and the lower portion of the second connecting rod extends into an inner cavity of the spring. According to the utility model, the damping particles filled at the lower end of the insulating pull rod absorb and disperse the bounce at the moment of contact of the moving contact, and rebounding of the moving contact is inhibited, thereby reducing bounce of the contact of the vacuum circuit breaker.

The present invention relates to the technical field of battery binders, and in particular to a lithium battery aqueous negative electrode emulsion and a preparation method thereof. The lithium battery aqueous negative electrode emulsion comprises the following components by weight: 100 parts of pre-emulsion; 5-10 parts of phosphoric acid functional monomers containing divinyl; 2-4 parts of neutralizer; 0.2-0.4 parts of initiator; and 60 parts of water. The lithium battery aqueous negative electrode emulsion provided by the present invention improves crosslinking and molecular weight after polymerization by introducing phosphoric acid functional monomers containing divinyl. The lithium battery aqueous negative electrode emulsion binder can form a crosslinked network structure with a higher degree of polymerization after film formation, tightly grasps the graphite surface, inhibits the rebound of graphite at full charge, and improves the high temperature cycle performance of lithium ion batteries.

This utility model relates to the field of automotive bumper impact testing technology, and more particularly to an impact testing device for automotive bumper production. It includes a worktable and an impact head. The worktable contains a rotatable polygonal impact testing platform, a protective cover, and a lifting control mechanism. The protective cover is fixedly connected to the upper end of the worktable. Vertical guide rails are symmetrically arranged on the inner walls of both sides of the protective cover. Guide sliders are slidably connected within the guide rails, and a top plate is fixedly connected between the two guide sliders. A U-shaped frame is fixedly connected to the lifting control mechanism's front lifting section, and a support plate is rotatably connected within the U-shaped frame. An electromagnet is fixedly connected to the inner wall of the rear side of the protective cover, and a magnetic block magnetically connected to the electromagnet is installed at the rear end of the top plate. This utility model achieves a "multi-purpose" function by using different sized fixtures installed on each side, while effectively suppressing the rebound of the impact head. The combined use of the electromagnet and the magnetic block makes the fixation of the impact head more reliable.

The utility model discloses a microcrystalline iron core buckle stabilizing device comprising a main body assembly which comprises an iron core buckle; the stabilizing assembly comprises a supporting plate, a first fixing block, a first clamping plate, a limiting rod and a first threaded rod; the supporting plate is fixed to the lower surface of the iron core buckle, the first fixing block is fixed to one side of the upper surface of the supporting plate, the first clamping plate is arranged on one side of the outer surface of the first fixing block, the limiting rod penetrates through the first clamping plate, the first threaded rod penetrates through the middle of the outer surface of the first fixing block, and the other end of the limiting rod penetrates through the second clamping plate. The problems that in order to prevent a microcrystalline iron core from loosening or falling off in the lifting or moving process, an existing microcrystalline iron core buckle only adapts to iron core buckles of the same specification when fixing the iron core, the applicability and flexibility of a stabilizing device are reduced, and in the transportation process, the stability of the stabilizing device is poor are solved. And the bumpiness of the road can damage the iron core.

The utility model provides a car stopping device for preventing a car from sliding down in an inclined roadway, which belongs to the technical field of car stopping devices and comprises a car stopping beam, an air control box, an air cylinder, an air path system and an elastic buffer structure. The air control box is connected with the air cylinder through the air path system and used for controlling the air cylinder to act, and the air cylinder is connected with the car stopping beam and drives the car stopping beam to ascend and descend. The elastic buffering structure is installed on the surface of the side, facing the coming direction of the inclined drift sliding car, of the car stopping beam, a manual operation valve is arranged on the air control box and used for manually controlling connection and disconnection of the air path system so as to drive the air cylinder to act, the elastic buffering structure comprises a plurality of elastic buffering blocks and a spring, one end of the spring is fixedly connected with the car stopping beam, and the other end of the spring is fixedly connected with the air control box. A plurality of installation grooves are formed in the surface of the side, facing the coming direction of the inclined drift sliding-down car, of the car stopping beam, the problems that a traditional inclined drift sliding-down preventing car stopping device is prone to driving faults, and the structure lacks buffering are solved, and the reliability of the car stopping device is improved.

The invention relates to a binder and application thereof in a lithium battery. The binder comprises an amphiphilic polymer and an oil-soluble flexible polymer, the amphiphilic polymer comprises a hydrophilic structural unit and a lipophilic structural unit; the number-average molecular weight of the amphiphilic polymer is 1w to 500w, and the dispersity index of the amphiphilic polymer is 0.5 to 5; the number average molecular weight of the flexible polymer is 2000 to 20 w; the mass ratio of the flexible polymer is 1-40wt% by taking the total mass of the adhesive as 100%; in the amphiphilic polymer, the mass ratio of the hydrophilic structural unit to the lipophilic structural unit is (10-85): (85-10). The adhesive provided by the invention has the effects of high flexibility, low swelling property and good stability while improving the bonding mechanical strength.

The utility model relates to the technical field of shock absorber, especially a high stability shock absorber for vehicle, solves the shortcoming that the shock absorber exists in prior art, including upper lifting ring, upper shell body is fixedly connected with one side of upper lifting ring, the lower shell body is slidably connected in the upper shell body, the lower shell body one side is provided with lower lifting ring, the lower shell body one side is provided with end cover and makes its inside complete sealing, the lower shell body is provided with floating piston, oil tank is arranged between floating piston and end cover, the other side of floating piston is provided with gas chamber, the upper shell body one side is fixedly connected with piston rod, the piston rod one end is provided with working piston, working piston is slidably connected with oil tank inside, the utility model discloses, has practicality is strong and the characteristics such as good shock attenuation effect.

The invention discloses forming equipment for manufacturing a concave type hollow-like paper tube, and relates to the technical field of paper tube processing. The forming equipment for manufacturing the concave type hollow paper tubes comprises a forming equipment body, the forming equipment body comprises a group of groove roller frames A, five groups of groove roller frames B, two groups of groove roller frames C, two groups of groove roller frames D and a square tube inner mold, and the square tube inner mold is arranged in the groove roller frames A, the groove roller frames B, the groove roller frames C, the groove roller frames D and the square tube inner mold. The number of the groove roller frames D is two groups; the equipment is used for dynamically forming concave type hollow-like paper tubes, so that the equipment can be produced in batches to meet the market requirements; a plurality of types of rolling frames can be designed in advance and are flexibly arranged on the equipment according to the specific conditions of the concave hollow paper tubes; the smooth forming of the concave paper tube is ensured through the multi-section mold design and the dynamic connection mode matched with the equipment; as ancillary facilities of equipment, the groove roller, the bottom support roller, the in-groove pressing strip, the shaping section mold outer surface buckling groove and the like restrain rebound after forming.