69results about How to "Satisfy the load requirement" patented technology

A traction spherical hinge for rail vehicles comprises a case, a mandrel and a rubber layer bonded between the case and the mandrel through vulcanization. The traction spherical hinge is characterized in that the middle section of a bonding part for the mandrel and the rubber layer is an arc surface bulge bulging outwards in the radial direction, the center line of the arc surface bulge coincides with that of the mandrel, the deformation profile of the rubber layer is a convex arc surface gradually getting close to the inner wall of the case from outside to inside in the axial direction, the arc radius of the deformation profile is R1, the arc radius of the arc surface bulge is R2, and R1 is smaller than R2. Rigidity adjustment can be performed on the axis, diameter, deviation and torque of the spherical hinge can be realized, and the non-linear rigidity characteristics and fatigue resistance of the spherical hinge in the bearing process can be improved. The invention further provides a rigidity design method of the traction spherical hinge for the rail vehicles.

The invention discloses a processing method of a circuit board. The method comprises the steps that the step of an external layer graph is performed: the external layer graph is processed on the surface of a laminated board, and the external layer graph comprises a signal bearing line and a current bearing line; the step of electroplating thickening is performed: copper deposition and electroplating are performed, and a metal conductive layer is formed on the whole surface of the laminated board; the metal conductive layer acts as an electroplating lead wire, and the current bearing line is thickened for 1-3OZ through electroplating; and the metal conductive layer is removed through micro-etching; the step of lamination is performed: an insulating layer of which thickness is equivalent to that of the current bearing line is laminated on the region of the surface of the circuit board apart from the current bearing line; and the step of electroplating thickening and the step of lamination are repeated until the current bearing line is thickened to the required thickness.

The invention discloses a construction method of a shield excavation type air-push through ground fissure concealed excavation tunnel, comprising the steps of: 1. Concrete guide platform construction in the ground fissure concealed excavation tunnel; Pushing the whole machine forward: Push the shield machine forward and make the main shield machine supported on the two guide rails, and then use the propulsion cylinder and the reaction frame of the shield machine to push forward as a whole until the push is in place; During the push process, use the shield segment assembly machine of the shield machine to install multiple shield segments on the concrete guide platform from back to front. The shield segment is the bottom segment and it is located at the rear of the push cylinder. The bottom segments are supported on the reaction frame, and a plurality of bottom segments form a trolley translation channel for the rear supporting trolley of the shield machine to translate forward. The method of the invention has the advantages of simple steps, reasonable design, convenient construction and good application effect, and the construction process of the shield excavation through the ground fissure is simply completed by using the inverted arch backfill structure in the tunnel, and the construction process is safe.

The invention discloses a box-type emergency base station capable of being lifted and self-unloaded. An inner cavity of a box body is divided into an antenna bin and an equipment bin. The left side wall and the right side wall of the box body each are externally provided with a hand-operated folding and lifting supporting mechanism. Each hand-operated folding and lifting supporting mechanism comprises two telescopic supporting legs which are arranged front to back at intervals. Each telescopic supporting leg is sleeved with a corresponding fixing stand column in a penetrating mode from bottomto top. Each telescopic supporting leg is fixedly provided with a rack. The two telescopic supporting legs located on the same side achieve linkage expansion and contraction of the two telescopic supporting legs on the same side through a horizontal bar, gears and a hand-operated cranking bar, wherein the gears are fixedly arranged on the horizontal bar in a sleeving mode and mesh with the two racks one by one, and the hand-operated cranking bar drives one of the gears to rotate. Each fixing stand column is hinged to the outer side ends of two oblique supporting rods which are arranged parallelly up and down at intervals. The inner side end of each oblique supporting rod is hinged to the corresponding side wall of the box body. Each fixing stand column is further hinged to the outer side end of a locking rod. The box-type emergency base station meets load requirements of a small pickup truck, can be quickly deployed in a narrow area, and does not occupy a transport chassis after beingself-unloaded.

The invention discloses an operation platform used for an overhead operation engineering vehicle, which comprises a main body part and a movable part, wherein the main body part is supported by an arm support of the overhead operation engineering vehicle, and the movable part is movably connected with the main body part; the movable part can extend out or retract in the transverse direction of the operation platform relative to the main body part. The invention also discloses an overhead operation engineering vehicle comprising the operation platform. When the overhead operation engineering vehicle runs on a road, the movable part can be retracted relative to the main body part, the total width of the operation platform is smaller, and the requirements of the relevant law and legislation of China can be met. When the overhead operation engineering vehicle is in a normal operation state, the movable part can be extended out relative to the main body part, thereby providing larger volume so as to meet the carrying requirements of large-sized equipment or large-sized articles and enhance the adaptability of the overhead operation engineering vehicle.

The invention discloses a steering drive module and a corresponding vehicle, and relates to the technical field of trolleybuses. The steering drive module is provided with four wheel bodies, a motor provides driving force for the wheel bodies in a centralized or decentralized mode, a steering controller utilizes a hydraulic actuator to execute a steering instruction, driving and steering are integrated, and thus the vehicle achieves flexible steering of the wheel bodies when meeting the bearing requirement. The invention further discloses a trolleybus provided with the steering drive module, and the trolleybus determines the wheel path and achieves the function of tracking by recognizing ground marks or the direction of front steering wheels.

The invention discloses a pull rod node assembly and a design method thereof. The pull rod node assembly comprises a pull rod and a node pressed into the pull rod; the node is composed of a core shaftand rubber bonded to the core shaft in a vulcanized mode. The node is characterized in that a part, matched with the pull rod, of the node is divided into three sections, wherein a stop section is located in the middle and has a stop function, and symmetrical sections are arranged on the left side and the right side of the stop section in a mirror symmetry mode; the core shaft diameter of the stop section is larger than that of the symmetrical sections, the rubber thickness of the stop section is smaller than that of the symmetrical sections, the rubber of the stop section is in a free state,and the rubber of the symmetrical sections is in a pre-compression state. Comfortable performance is improved, rigidity requirements under large loads and damping requirements and bearing requirements of the node under different lines are met, fatigue life of products is prolonged, and safety of vehicle operation is guaranteed.

The invention discloses a carbon fiber square cabin. The carbon fiber square cabin comprises a plurality of carbon fiber composite plates, a plurality of carbon fiber inner trim strips, a plurality of carbon fiber outer corner-covering strips and a carbon fiber door, wherein the carbon fiber composite plates are riveted with rubber and fixed to form a cabin body through the carbon fiber outer corner-covering strips and the carbon fiber inner trim strips; the carbon fiber door is arranged on an outer side surface of the cabin body; carbon fiber rectangular pipe section materials of the carbon fiber composite plates are adhered and fixed to form a carbon fiber frame; carbon fiber masks are separately adhered and fixed to the upper side and the lower side of the carbon fiber frame; filling materials are filled in the carbon fiber frame which is arranged between an inner carbon fiber mask and an outer carbon fiber mask; a plurality of pre-buried iron blocks are also fixed in the carbon fiber composite plates. The carbon fiber square cabin disclosed by the invention is high in rigidity and high in strength, and conforms to bearing requirements of equipment, and all army standard requirements can be met; the application range of the square cabin is further extended; about 30% of the weight is reduced. The whole cabin disclosed by the invention has the functions of rain prevention, dust prevention, and heat insulation, fungus prevention and salt spray prevention, and moist heat prevention, and has certain electromagnetic shielding function.

The invention relates to a magnetic circuit structure of a permanent magnet crawler for a wall climbing robot, which is composed of a permanent magnet adsorption unit and two rows of roller chains, wherein the double rows of chains with a bent plate and mounting holes are arranged on the bent plate of the chain, and the permanent magnet adsorption unit adopts a B magnetic circuit. The invention has the advantages that the weight of the robot and the weight of the equipment attached to the robot can be carried without falling off because the crawler has strong adsorption force, and the weight of the robot and the equipment attached to the robot can be carried without falling off because the crawler meets the needs of load, obstacle-crossing and power.

The invention discloses a safe floating mechanism for an offshore platform and a lifting system of the offshore platform. The safe floating mechanism comprises a locking pin assembly and a floating base. The locking pin assembly is mounted in the middle of the floating base. The safe floating mechanism further comprises a plurality of buffer devices and a plurality of guide plates. The buffer devices are mounted at the upper end and the lower end of the floating base, and the guide plates are bolted to the left side and the right side of the floating base. The safe floating mechanism for the offshore platform is suitable for the hydraulic pin type lifting system of the offshore operation platform and is used for locking a pile leg and achieving a radial restraining and fastening effect on the pile leg to ensure uniform distribution of a load. Compared with a pin mechanism fixedly mounted in a pile fixing frame (7), by adoption of the safe floating mechanism for the offshore platform, collision deformation between a locking pin shaft and the pile leg is avoided, the safe reliability is improved, and the service life is prolonged.

The invention discloses an operation platform used for an overhead operation engineering vehicle, which comprises a main body part and a movable part, wherein the main body part is supported by an arm support of the overhead operation engineering vehicle, and the movable part is movably connected with the main body part; the movable part can extend out or retract in the transverse direction of the operation platform relative to the main body part. The invention also discloses an overhead operation engineering vehicle comprising the operation platform. When the overhead operation engineering vehicle runs on a road, the movable part can be retracted relative to the main body part, the total width of the operation platform is smaller, and the requirements of the relevant law and legislation of China can be met. When the overhead operation engineering vehicle is in a normal operation state, the movable part can be extended out relative to the main body part, thereby providing larger volume so as to meet the carrying requirements of large-sized equipment or large-sized articles and enhance the adaptability of the overhead operation engineering vehicle.

The invention discloses a method suitable for conducting reconstruction and reinforcing on an existing artificial foundation. The method comprises the steps that an original foundation is included, the original foundation is reinforced and improved to form a composite foundation by arranging plain concrete piles; according to the technical scheme, the pile body concrete strength grade of the plainconcrete piles is C20, the pile diameter is 500 mm, the effective pile length is 10.5-12.5 m, a silty clay layer or locally a first highly weathered tuff bed serves as a supporting stratun of the pile end, the pile spacing of a main building is 1.48 m*1.55 m, the pile spacing of podium buildings is 2.0 m*1.8 m, and the pile top is provided with a gravel mattress layer with the thickness being 200mm. Accordingly, the effects of fully utilizing the bearing capacity of the original artificial foundation and being uniform in foundation deformation are achieved.

The invention relates to a network resource allocation method and device, computer equipment and a storage medium. The method comprises the steps of obtaining positioning information of a robot in a working space, determining a positioning interval to which the robot belongs according to the positioning information, and distributing network resources to the robot through a network slicing technology based on the positioning interval to which the robot belongs. According to the method, the resources are distributed to the robot in a targeted manner according to the positioning interval of the robot, the problems of communication delay and high packet loss rate of the robot located in the working space are solved, data transmission can meet the service bearing requirement, meanwhile, the network resources are distributed by using the network slicing technology, the safety and reliability of data bearing can be improved, and high-precision control over the inspection robot is achieved.