31results about How to "Reduce large deformation" patented technology

The invention relates to an auxiliary positioning device for railway vehicle air conditioner installation. The device comprises a vehicle body, a moving mechanism and a clamping mechanism, wherein theclamping mechanism is installed at an upper end of the vehicle body in a sliding fit mode, and a placing mechanism is arranged at an upper end of the clamping mechanism. The device is advantaged in that rail vehicle air conditioner installation is conducted by adopting the design concept that an air conditioner continuous supply and a transportation installation structure can be rapidly achieved,in the whole process, air conditioners do not need to be manually lifted to an upper end of the vehicle body one by one, then working efficiency is greatly improved, labor intensity of workers is reduced, moreover, multiple mechanisms with the clamping and limiting effects are adopted to improve the stability degree in the air conditioner transportation and installation process, and then one-timeinstallation accuracy of air conditioner installation is improved.

The invention discloses a roller compacted concrete structure in which composite slurry material is injected into gravel material. It is composed of multi-layer composite slurry roller compacted concrete layer. The composite slurry roller compacted concrete layer is formed by vibration rolling of gravel material and surface poured composite slurry. The gravel material is excavation material with a particle size greater than or equal to 5mm. The gravel material is piled up in layers on the dam foundation, and the composite slurry is poured on the layered gravel material and randomly filled with gravel material. When the liquid level of the composite slurry is close to the top surface of the gravel material, the surface of the storehouse is compacted by vibrating rollers. A grouted roller compacted concrete structure with a uniform and stable structure is formed. The invention has the advantages of local materials, uniform and stable structure, excellent performance, fast construction speed and saving engineering cost. The invention also discloses a construction method of the roller compacted concrete structure in which the composite slurry material is injected into the stone slag material.

The invention discloses a method for controlling roadway surrounding rock deformation under the condition of opposite stoping and tunnelling of close-range coal seams, and the method is used for the field of mining-induced stress control methods for opposite stoping and tunnelling of the close-range coal seams. The mining-induced stress control methods corresponding to three types of conditions include: the mining-induced stress control method for opposite stoping and tunnelling of the corresponding coal seam, the mining-induced stress control method for lower stoping and upper tunnelling of the adjacent coal seam, and the mining-induced stress control method for upper stoping and lower tunnelling of the adjacent coal seam. The technical problems of roadway large deformation, low roadway support efficiency and high support cost under the influences of stoping are effectively solved; and it can be seen that the roadway large deformation phenomenon is reduced by 70%, the support efficiency is improved by 20%, and compared with the prior art, the support cost is lowered to 60%.

The invention discloses a shock absorption rubber air spring used for a vehicle. The shock absorption rubber air spring comprises a bladder type main body, an upper shock absorption part and a lower shock absorption part. The upper shock absorption part and the lower shock absorption part are connected with the two ends of the bladder type main body respectively. In addition, the upper shock absorption part comprises an upper shock absorption pillar and a buffer part. The shock absorption pillar is fixedly connected with the top of the buffer part, and the buffer part is in the shape of a bottle without bottoms at the two ends. The upper end of the buffer part is connected with the bottom of the shock absorption pillar. The lower end of the buffer part is inserted into the bladder type main body. The upper shock absorption part is made of vulcanite. The buffer part of the upper shock absorption part further comprises a conical transition part, an annular connection part and an insertion part. The conical transition part is connected with the shock absorption pillar. The insertion part is inserted into the bladder type main body. The annular connection part is located between the conical transition part and the insertion part. According to the shock absorption rubber air spring, the phenomena of the short service life and partial heating of the rubber air spring caused by excessive deformation and overstrain of a rubber airbag due to frequent use in the using process are avoided, so that the service life of the rubber air spring is prolonged, and the quality of the rubber air spring is improved.

The invention relates to a traffic tunnel surrounding rock collaborative control system and a construction method, comprising a quick-setting slurry layer that can be sequentially arranged along the inner wall of the tunnel to the direction of the inner space of the tunnel, a flexible explosion-proof energy-absorbing layer, a rigid guard plate layer and a steel arch frame, A plurality of telescopic parts are arranged between the flexible explosion-proof energy-absorbing layer and the rigid guard plate layer, and the gap between the flexible explosion-proof energy-absorbing layer and the rigid guard plate layer is filled with flexible materials; the flexible explosion-proof energy-absorbing layer can pass through anchors It is fixedly connected with the surrounding rock, and the anchor piece can be inserted into the surrounding rock. The support structure of the present invention can effectively prevent and control the large deformation of the surrounding rock faced by the traffic tunnel.

The invention relates to an auxiliary positioning device for railway vehicle air conditioner installation. The device comprises a vehicle body, a moving mechanism and a clamping mechanism, wherein theclamping mechanism is installed at an upper end of the vehicle body in a sliding fit mode, and a placing mechanism is arranged at an upper end of the clamping mechanism. The device is advantaged in that rail vehicle air conditioner installation is conducted by adopting the design concept that an air conditioner continuous supply and a transportation installation structure can be rapidly achieved,in the whole process, air conditioners do not need to be manually lifted to an upper end of the vehicle body one by one, then working efficiency is greatly improved, labor intensity of workers is reduced, moreover, multiple mechanisms with the clamping and limiting effects are adopted to improve the stability degree in the air conditioner transportation and installation process, and then one-timeinstallation accuracy of air conditioner installation is improved.