Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

54results about How to "Durable and reliable" patented technology

Large-diameter shield tunnel concrete segment connecting construction

Disclosed is a large-diameter shield tunnel concrete segment connecting construction. According to the large-diameter shield tunnel concrete segment connecting construction, weakening of the connecting construction to a concrete segment structure is reduced effectively, durability is reliable, fabricating is convenient, and the safety of hoisting operation is increased. The connecting construction comprises a first concrete segment and a second concrete segment which are located on the two sides of a joint. The first concrete segment is provided with a first hand hole, a first straight hole and a second straight hole. The outer end of the first straight hole communicates with the first hand hole. The axes of the first straight hole and the second straight hole are staggered. The outer end of the second straight hole communicates with the joint side end wall of the first concrete segment. The second concrete segment is provided with a second hand hole and an arc-shaped hole. One end of the arc-shaped hole communicates with the second hand hole, and the other end of the arc-shaped hole communicates with the joint side end wall of the second concrete segment. Ports of the second straight hole and the arc-shaped hole which are on the two sides of the joint correspond to each other. A first connecting rod provided with a straight section and an arc-shaped section penetrates into the second straight hole and the arc-shaped hole. A second connecting rod penetrates into the first straight hole from the first hand hole, and the rear portion of the second connecting rod penetrates through a connecting hole in the first connecting rod and is connected with the first connecting rod. A thread section is arranged on the front portion of the first connecting rod. A nut and retaining gasket assembly is mounted on the thread section in the second hand hole.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

Seeding device of tobacco floating seedling raising plate

The invention discloses a seeding device of a tobacco floating seedling raising plate. The seeding device comprises a conveying mechanism of the seedling raising plate, and a first substrate discharging hopper, a first substrate scraping mechanism, a first indenting mechanism, a second substrate discharging hopper, a second substrate scraping mechanism and an indenting and seeding integrated mechanism which are sequentially distributed along the conveying mechanism; the first indenting mechanism adopts a disc type structure; the indenting and seeding integrated mechanism is used for screeningseeds and then conveying the seeds into a material dividing plate, and the seeds are discharged one by one through three layers of staggered plates of the material dividing plate; then secondary indenting and seeding are completed at the same time through a combined conical indenting seeding hopper and a round-head indenting bar. Two times of substrate filling and indenting fully guarantee formingof seed pits; the indenting and seeding integrated mechanism guarantees that the seeding positions are proper, the device is reliable and lasting in work, it is guaranteed that the seeding success rate can reach 195/200, thinning is not needed, the seeding quality is improved, and the seedling quality of tobacco seedlings is ensured.
Owner:LIUYANG BRANCH OF CHANGSHA COMPANY OF HUNAN TOBACCO

Bottom guard plate structure of front bumper

The invention relates to a bottom guard plate structure of a front bumper. The structure comprises a bottom protection plate body, the bottom protection plate body is installed between a front end frame and the front bumper, the front end of the bottom protection plate body is in lap joint with the front bumper, the rear end of the bottom protection plate body is fixedly connected with a lower cross beam of the front end frame, and a gap between the front bumper and the front end frame is sealed to achieve the effect of improving the whole vehicle wind resistance and the cabin heat dissipationperformance; and a shank supporting cross beam and transverse and vertical grid ribs are arranged on the bottom protection plate body, the transverse and vertical grid ribs are arranged in the lap joint area of the bottom protection plate body and the front bumper, and the shank supporting cross beam is arranged at the rear portions of the transverse and vertical grid ribs. When a pedestrian collides, the transverse and vertical grid ribs play a role in preliminary buffering and energy absorption, and the shank supporting cross beam behind the transverse and vertical grid ribs plays a role inmain energy absorption and supporting. In pedestrian protection leg type collision, the integrated shank supporting cross beam absorbs collision energy, so that light weight is achieved, and impact energy on the lower portion of the shank of a pedestrian can be effectively absorbed.
Owner:DONGFENG MOTOR CORP HUBEI

An overall active underpinning structure and underpinning method for large-tonnage multi-pile foundations of bridges

The invention provides an overall bridge large-tonnage and multi-pile-foundation active underpinning method. According to the method, an overall active underpinning structure needs to be provided. The method specifically comprises the steps that new piles, a longitudinal apron piece and a transverse apron piece are built, and a later-pouring node position is reserved on the longitudinal apron piece; a hoop is poured on an underpinned pile; ejecting and lifting force is exerted by the hoop so that the underpinned pile can be unloaded to zero axial force, and the underpinned pile is cut off; the underpinning node of later-poured reinforced concrete is built between the longitudinal apron piece and the underpinned pile, and stress conversion is finished; the steps are repeatedly carried out on each underpinned pile, and the overall active underpinning of all bridge pile foundations is finished. The invention further provides the overall bridge large-tonnage and multi-pile-foundation active underpinning structure. The number of the new piles needing to be arranged is small, and the difficulty that the piles cannot be arranged under the limitation of space is avoided. Differential settlement among the underpinned piles can be adjusted conveniently, and the stress performance and durability of the underpinned piles are reliable.
Owner:福建建工集团有限责任公司 +1

Spherical hinged connection device for two sliding shafts

The invention relates to a steering column, which comprises an inner shaft, an outer shaft, columns of spherical objects, rigid rolling rail parts and elastic elements, wherein an axial groove of one of the inner and outer shafts is provided with two sunken support surfaces; each rigid rolling rail part comprises raised pivoting parts with raised pivoting surfaces and supporting parts with supporting surfaces, which are positioned on each side of a middle plane; the raised pivoting surfaces contact the sunken support surfaces; the supporting surfaces are pressed against and support the spherical objects; the elastic elements are positioned in the axial groove of one of the inner and outer shafts, and are pressed against the spherical objects to push and press the two rolling rail parts, so that torque transmission is avoided in a stationary state but is performed in a running state; each spherical object simultaneously contacts the two rolling rail parts and the axial groove of one of the inner and outer shafts; the radius of each raised pivoting surface of the two rolling rail parts is greater than that of the corresponding sunken support surface contacting the raised pivoting surface, so that two contact areas of pivoting axes parallel to a common axis can be defined and determined.
Owner:罗伯特博世汽车转向旺多姆股份公司

PVA non -woven embroidery dyeing method and its dyeing device

The invention discloses a dyeing and finishing method of a PVA non-woven fabric embroidery and a dyeing and finishing device thereof. The dyeing and finishing method includes scouring and bleaching, and comprises the following steps of: firstly, performing raw cloth inspection, cloth turning process and sewing process on the PVA non-woven fabric embroidery; then quickly wiping the PVA non-woven fabric embroidery on a hot metal surface while keeping the temperature of the metal surface to 750-850 DEG C; carrying out desizing treatment on the PVA non-woven fabric embroidery with hydrogen peroxide; then preparing a scouring working solution while controlling the temperature at 45-50 DEG C; putting the fabric having the liquid rolling treatment into a steam box for steaming and then rinsing for 30-50 minutes; finally, preparing 15-20 mol / L sodium hydroxide solution, and putting the fabric into sodium hydroxide solution to react for 15 to 30 minutes. By using the dyeing and finishing method, the cloth is dyed and finished, so that the cloth has good effects of oxidation resistance, wear resistance, sterilization, color fixation, flame retardance and fragrance enhancement. By using the dyeing and finishing device, dyeing color on the cloth is more even, which is more convenient to use.
Owner:汕头市坤兴刺绣有限公司

Method and device for reinforcing damaged reinforced concrete column by adopting prefabricated component with sleeves

The invention discloses a method for reinforcing a damaged reinforced concrete column by adopting a prefabricated component with sleeves. A prefabricated reinforced concrete component (1), the sleeves(2), embedded steel bars (3) with anchor heads and post-cast strips (4) are mainly included. The prefabricated reinforced concrete component is composed of pre-buried longitudinal bars, pre-buried stirrups, constructed pulling bars and concrete. The method comprises the steps that the reinforce concrete with the damaged plastic hinge at the bottom end of the concrete column is dismantled, the prefabricated reinforced concrete component replaces the dismantled concrete, the joint is integrally connected with the original column through the post-cast strips, and finally the column with the improved performance after reinforcing is formed. According to the method, the prefabricated component is adopted for assembling and reinforcing the damaged reinforced concrete column on site, the damagedpart at the column end is quickly dismantled and reinforced, all the prefabricated components can achieve industrialized production, on-site assembling and connection reduces the workload of wet construction on site, the reinforcing efficiency is effectively improved, the quality of reinforcing construction can be easily ensured, and the new concept that an assembling method is adopted for reinforcing the damaged structure is shown.
Owner:HUNAN UNIV

Dynamic flower-shaped firework setting-off appliance

The invention discloses a dynamic flower-shaped firework setting-off appliance. The dynamic flower-shaped firework setting-off appliance comprises a plurality of petal body parts for mounting fireworks and also comprises a screw part connected with a rotation driving mechanism; a front substrate and a rear substrate are axially arranged along the screw part; a root part of each petal body part isarticulated on the front substrate; a middle part of each pedal body part is articulated with one end of a connection rod part, and the other end of the connection rod part is articulated on the rearsubstrate; the screw part is used for driving the substrates to do forward-backward linear motion along the axial direction of the screw part so as to shorten an axial gap between the front substrateand the rear substrate, so that a firework shape with flowers which gradually bloom can be formed. According to the dynamic flower-shaped firework setting-off appliance, a screw driving manner is usedfor achieving a process of dynamically opening and closing the flower shape of the fireworks; the appliance is reliable and lasting in operation and convenient to mount and use, and can be used repeatedly; the dynamic flower blooming process speed can be controlled to be perfectly matched with setting-off rhythm, background music and firework body effect; the smoke is reduced; the setting-off safety is improved.
Owner:余志远

Backpack type electric airflow picking machine for cotton fruits and method for same

The invention relates to the technical fields of harvesting and picking devices for cotton crop fruits, in particular to a backpack type electric airflow picking machine for cotton fruits. The backpack type electric airflow picking machine comprises a direct current motor structure, a rectifying fan structure, cotton pulling wheels, a structure of a driving wheel capable of driving a chain belt type filter screen to rotate, a structure of the chain belt type filter screen and an adjusting wheel rotating along with the driving wheel. The backpack type electric airflow picking machine is characterized by comprising an entire machine casing, and a direct current motor, a rectifying fan, a chain belt type filter screen device, upper and lower cotton pulling wheels, an inverted U-shaped wind shield and an elastic wind shield which are arranged in the entire machine casing as well as an aspirated-air type cotton picking manipulator connected onto an air cotton interface on the casing. The backpack type electric airflow picking machine disclosed by the invention has the advantages of reliability, portability, simpleness and convenience for repairing, maintaining and charging, small size, light weight, lightness and flexibility for operation, reliability and durability for use, continuousness in picking, high quality of picked cotton and high grade of the obtained cotton.
Owner:徐森良

Brake Energy Recovery System of Electric Vehicle

A system for recover brake energy of electric vehicle includes the permanent magnet synchronous motor of the original vehicle, three-phase alternating current switch, three-phase full-bridge rectifierand high-voltage battery pack, Brake energy recovery switch, energy storage buffer capacitor, DC buck charger and low voltage battery, A permanent magnet synchronous motor is connected with a three-phase full-bridge rectifier through a three-phase alternating current switch, The output of the three-phase full-bridge rectifier is connected to an energy storage buffer capacitor. The output of the energy storage buffer capacitor is provided with two channels. A low-voltage battery is connected through a DC buck charger, A high-voltage battery pack is connected with the other way through a high-voltage charging isolation diode. the output end of the low-voltage battery is connected to the control end of the three-phase alternating current switch through the brake energy recovery switch, A low-voltage battery is use for supplying pow to that low-voltage electric load of the original vehicle. From the practical application of the electric vehicle, the invention can charge the high-voltage battery pack under the high voltage, and when the low-voltage battery pack is lower than the high-voltage battery pack, the low-voltage battery pack on the vehicle is char, and the energy generated bybraking can be recovered.
Owner:CHONGQING RUIYANG TECH DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products