38results about How to "Effective deformation control" patented technology

The invention provides a remote sensor damping and vibration-isolation device improved based on a bi-pod supporting mode, and relates to the technical field of optical remote sensing vibration isolation. The remote sensor damping and vibration-isolation device comprises lower adapting supports, vibration isolation metal outer rods, vibration isolation metal inner rods and an upper adapting support, wherein the lower adapting supports are located in the same plane and horizontally fixed at the lower end of the remote sensor damping and vibration-isolation device; one end of each vibration isolation metal outer rod is fixedly connected with the corresponding lower adapting support, and the vibration isolation metal inner rods are fixedly mounted in the vibration isolation metal outer rods and extend out of the upper end faces, in the axial direction, of the vibration isolation metal outer rods; the ends, extending out of the vibration isolation metal outer rods, of the vibration isolation metal inner rods are fixedly connected; and the upper adapting support is fixedly mounted at the joint of the vibration isolation metal inner rods. The remote sensor damping and vibration-isolation device is high in vibration reduction efficiency and few in consumed system resource, functional separation of a rigid supporting structure and a damping and vibration reduction structure is achieved, the technical problem that the rigidity of a vibration isolation system is hard to maintain effectively is solved, and the temperature maintaining purpose of a working section of the damping and vibration isolation system is achieved.

The invention provides an energy-absorbing beam, a cab chassis structure of a rail vehicle and a rail vehicle. The energy-absorbing beam is connected with the cab chassis structure of the rail vehicle. The energy-absorbing beam comprises a cylindrical shell and at least one partition plate located inside the shell. The cross-sectional area of the housing gradually decreases in the direction from the rear end of the cab to the front end of the cab; The partition plate is connected with the inner wall of the shell, and the plane direction of the partition plate is mutually perpendicular to the traveling direction of the rail vehicle; A V-shaped notch is formed on the outer wall of a part of the outer shell facing the front of the rail vehicle, and a corner plate matching the shape of the V-shaped notch is welded on the V-shaped notch, thereby improving the collision-proof and energy-absorbing function of the cab chassis structure.

The patent of the invention belongs to the field of mine disaster prevention and control, and specifically relates to a method for controlling severe deformation of soft and broken floor drum roadways through closed-loop grouting support of prefabricated reinforced concrete segments. The support structure can form a closed-loop structure, and convert the extrusion force generated by the deformation of surrounding rock into the hoop stress of the support structure. Delayed grouting can fill the pores between the concrete segment and the surrounding rock while strengthening the shallow surrounding rock, so as to avoid local stress concentration and damage. This support technology can realize the support mechanism of the new Austrian method in the tunnel construction on the basis of ensuring the timely support of the roof in the coal mine regulations, that is, the surrounding rock is allowed to have a certain deformation in the initial stage, and when the deformation reaches a certain level, the prefabricated steel bars The concrete segments play a supporting role, and the supporting force increases as the deformation increases until the surrounding rock reaches a new equilibrium state. The bottom plate adopts a semi-closed anti-arch design, which is conducive to the release of energy in the bottom drum roadway, avoids repeated repairs, and greatly reduces costs.

The invention discloses an adaptive pressure-relieving grouting bolt, which overcomes the problem in the prior art that the reinforcement ability of the bolt needs to be improved. The invention includes an anchor body, an adaptive locking device, a grouting hole, a grout stopper, a grout stopper backing plate, a fastening nut and a grout stopper, wherein the anchor rod body is a hollow tube, and the anchor rod body is sleeved on In the self-adaptive locking device, there is a grouting hole on the side wall of the bolt body sleeved in the rock, and the side of the bolt body protruding out of the rock passes through the middle part of the grout stopper and the grout stopper backing plate. , after the self-adaptive locking device is socketed, the connection is fixed through the fastening nut, and the end of the anchor rod body is provided with a grout plug. The self-adaptive locking device includes a locking wedge mechanism, an upper sleeve, an isolation rubber ring, a positioning lower sleeve, a grout plug nut, a screw washer and a spring. In this technology, the upper sleeve releases the pressure of the bolt body by cutting the pre-unloading protrusion of the bolt body, effectively controlling the large deformation of the surrounding rock, improving the anchoring efficiency, and meeting the requirements of bolt support technology in deep geotechnical engineering.

The invention discloses a construction method for a self-elevating drilling platform cantilever beam main beam. The self-elevating drilling platform cantilever beam main beam is constructed through the steps of material preparation, upper-lower wing plate butt joint, web splicing, inclined-V plate splicing, T-row fabrication and T-row folding. By means of the construction process, the problem thatthe deformation of a single part is large due to the fact that a narrow-strip-shaped groove is cut through flames is solved; structure assembling and welding are relatively dispersed, assembly line work is adopted, and reasonable arrangement of workshops is facilitated; meanwhile, deformation can be effectively controlled; main beam folding is performed on a horizontal jig frame, work high abovethe ground is avoided, and risks are further lowered; and after a component is segmented, synchronous construction can be realized, the construction cycle is shortened, and production efficiency is improved.

The invention provides a cold cutting die for a titanium alloy precision-forged blade, which can effectively control the deformation for the side cut of the titanium alloy blade, improve the production efficiency and lower the production cost. The cold cutting die comprises an upper die plate and a lower die plate, as well as a punch and a lower die, wherein the upper die plate and the lower die plate are connected by a guide pillar and a ball guide sleeve in a matching manner, the punch is arranged on the lower die plate by a punch base plate, the cold cutting die is characterized in that the lower die comprises a female die and a support die, the female die is fixedly arranged on the lower die plate by a screw, the female die is internally provided with a vertical through slot and a horizontal through slot which are perpendicularly communicated, the support die is arranged in the vertical through slot, the lower end of the support die is supported by a rubber mat, the rubber mat is arranged on the lower die plate and positioned in the horizontal through slot, and the support die is 3-5mm higher than the female die under non-working state.