38results about How to "Small vertical displacement" patented technology

The invention relates to a tensile mechanism for stack rubber shock-insulating support seats, which is characterized in that stack rubber shock-insulating support seats are arranged between an upper structure and a lower structure, an upper reaction arm and a corresponding lower reaction arm are also arranged between the upper structure and the lower structure, the top end of the upper reaction arm is fixedly connected with the upper structure, and the bottom end of the lower reaction arm is fixedly connected with the lower structure; the bottom end of the other stack rubber shock-insulating support seat is connected with a cross arm of the bottom of the upper reaction arm, and the top end of the other stack rubber shock-insulating support seat is connected with a cross arm at the top of the lower reaction arm; the upper reaction arm, the lower reaction arm and the other stack rubber shock-insulating support seat form a reaction stack rubber shock-insulating support seat set. The invention has the advantages of simple structure and easy design and manufacture. The tensile mechanism can improve the tensile capability of shock-insulating layers of buildings, reduces the vertical displacement of shock-insulating layers, lowers earthquake response of the upper structure, and can be applied and popularized to large and wide structures.

An electromagnetic radiation sensor that exhibits improved performance by virtue of an ability to tune its sensitivity is disclosed. The electromagnetic radiation sensor incorporates thermal actuators that act in opposition to one another, but which have a slight difference in responsivity. A temperature controller is used to tune the sensitivity of the electromagnetic radiation sensor by controlling the temperature of the substrate on which the sensor is formed.

The double spherical shock absorbing and insulating bearer for railroad bridge includes an upper bearing plate, a middle bearing plate and a lower bearing plate superposed successively and sliding teflon plates set between bearing plates. The lower bearing plate has fixed shearing force member. The middle bearing plate has an upper spherical surface in small curvature radium for connection to the upper bearing plate through spherical spin friction, and a lower spherical surface in great curvature radium for connection to the lower bearing plate through spherical sliding friction. In addition, there are also a top basin on the upper bearing plate and a sliding teflon plate in between. the present invention has obvious shock absorbing and insulating effect, easy control and regulation, capacity of ensuring structural safety and lowering engineering cost, and other features.

The invention provides a beam bridge reinforcing structure and reinforcing method. The beam bridge reinforcing structure comprises an arched steel pipe component, I-beams and steel inclined struts. The two ends of the arched steel pipe component are fixed to two adjacent piers of a bridge body. A middle section of the arched steel pipe component is fixedly connected with the steel inclined struts. The steel inclined struts are fixedly connected with the I-beams. The bottom of a bridge deck of a beam bridge is continuously supported through upper flanges of the I-beams. By the adoption of the reinforcing structure, stress of an original beam bridge is optimized, the bending moment of the beam bridge is remarkably reduced, the situation that the beam bridge further cracks under the overloading effect is effectively prevented, part of cracks can be partially closed, stressed reinforcing steel bars in the beam bridge are protected against exposure and corrosion, the load burdens and operation risks of the beam bridge are remarkably reduced, the structure anti-bending and anti-shearing bearing capacity and the durability performance of the beam bridge are improved, and the service life of the bridge is effectively prolonged.

The invention relates to a three-dimensional pull rod type belleville spring shock insulation support seat. The support seat comprises an upper connecting plate, a lower connecting plate and four pull rod back pressure type belleville spring dampers, wherein the upper connecting plate and the lower connecting plate are parallel to each other, the four pull rod back pressure type belleville spring dampers are arranged between the upper connecting plate and the lower connecting plate, and connecting rods on both ends of each pull rod back pressure type belleville spring damper are connected with the upper connecting plate and the lower connecting plate respectively by universal ball joints, so that a quadrangular frustum pyramid structure of which every two opposite side surfaces are symmetrical is formed. The three-dimensional shock insulation support seat has the effect of overturning resistance, and real three-dimensional shock insulation can be realized.

The invention discloses a loess cave dwelling reinforcing device. The loess cave dwelling reinforcing device comprises cave dwellings, wood arch frames and steel strips, wherein a ventilation opening is formed in the arch top of each cave dwelling, an air catcher is mounted on each ventilation opening, dehumidification sterilizers are arranged in the cave dwellings, the wood arch frames are mounted in the cave dwellings, collapse warners are fixed on the wood arch frames, the steel strips are laid on the central axes of the tops of the wood arch frames, and the bottoms of the wood arch frames are fixed on base stones and are fixed at the bottoms of the cave dwellings through anchor rods. The loess cave dwelling reinforcing device has the advantages that the loess cave dwelling reinforcing device is simple in structure, reasonable in design, low in manufacturing cost, safe, reliable and suitable to popularize and use; by combining loess cave dwelling distribution characteristics with local economic conditions, the loess cave dwelling reinforcing device applicable to the countryside is used for improving bearing capacity and deformation capacity of the cave dwellings; a plurality of wood arch frames are arranged in the cave dwellings, the steel strips are mounted on the tops of the wood arch frames, and a soil mass between each two adjacent wood arch frames is transferred in soil particles due to normal stress to form load-bearing arches resistant to vertical tension, so that vertical displacement of the arch top soil mass is benefited.

The invention relates to a three-dimensional composite spring shock insulation support seat. The support seat comprises an upper connecting plate, a lower connecting plate and four back pressure type composite spring dampers, wherein the upper connecting plate and the lower connecting plate are parallel to each other, the four back pressure type composite spring dampers are arranged between the upper connecting plate and the lower connecting plate, and connecting rods on both ends of each back pressure type composite spring damper are connected with the upper connecting plate and the lower connecting plate respectively by universal ball joints, so that a quadrangular frustum pyramid structure of which every two opposite side surfaces are symmetrical is formed. The three-dimensional shock insulation support seat has the effect of overturning resistance, and real three-dimensional shock insulation can be realized.

The invention relates to the technical field of tree pruning, in particular to a crawling device for a pruning robot. The device comprises a plurality of crawling units and T-shaped connecting blocks; the crawling units are vertically connected layer by layer through the T-shaped connecting blocks into a parallelogram, the crawling units at the uppermost end and the lowermost end are movably arranged on the side walls of vertical beams through pin shafts, and the T-shaped connecting blocks are arranged at the bottoms of the crawling units through rotating shafts; each crawling unit comprises an arc-shaped sheet, an arc-shaped sliding rod, a pressure spring, a tension spring and an adjusting unit; the upper wall of each arc-shaped sheet is provided with an arc-shaped groove, a plurality of rectangular grooves are formed in the side walls in the diagonal direction sequentially, and the lower side walls of the arc-shaped sheets are provided with the T-shaped connecting blocks. The device solves the problems that existing manual pruning has potential safety hazards and requires large space during large-scale mechanical operation and environment damage is easily caused; the defect that large-scale motor vehicles cannot enter a narrow area for pruning trees is overcome effectively, and manpower and material resources are saved.

The invention relates to the technical field of tree pruning, in particular to a tree climbing robot for pruning. The tree climbing robot for pruning comprises a power component, climbing devices anda pruning component, wherein the power component is arranged on a pruned tree through the multiple climbing devices, and the pruning component is arranged on the power component; the climbing devicesare movably connected with the power component, the whole shape of the climbing devices is parallelogram when the climbing devices are not installed, the shape of the climbing devices is changed fromthe parallelogram to S shape when the power component is arranged on the tree through the climbing devices, the S-shaped climbing devices can fix the power component on the trunk through shrinking deformation, the power component can drive the climbing devices to spirally lift and drop, the problems of potential safety hazard of existing manual pruning, need of large space during operation of a large machine and high probability of environment damage are solved, the defect that a large motor vehicle cannot enter a narrow area for pruning trees is effectively overcome, and manpower and materialresources are saved.

The invention aims to overcome at least one defect of the prior art and provides a propelling method for planar gliding of a shield tunneling machine. The propelling method comprises the steps that when a stretchable device stretches for propelling, a resistance-increasing assembly is started to increase the resistance, so that the acceleration of the shield tunneling machine relative to a base plate is greater than the acceleration of a supporting frame relative to the ground; and when the stretchable device retreats, the resistance-increasing assembly is started to reduce the resistance, sothat the acceleration of the shield tunneling machine relative to the base plate is smaller than the acceleration of the supporting frame relative to the ground. According to the propelling method, the maximum static friction between a propelling device and the ground in different propelling processes can be achieved only by adjusting the resistance of the resistance-increasing assembly, the stress can be switched to the resistance-increasing assembly or a gliding assembly by adjusting the height of the resistance-increasing assembly, and operation is easy; and the abrasion of the bottom of the propelling device is reduced, and the service life is prolonged.

The invention discloses a power supply module mounting part and a module power supply, belongs to the technical field of module power supply assembly, and solves the problem that the mounting of a power supply module in the prior art cannot meet the size allowance and the vibration allowance of a power supply module and circuit board mounting structure. The power supply module mounting part comprises a shell, a first circuit board, a plug-in electric connector, a second circuit board and a power module, the first circuit board, the plug-in electric connector, the second circuit board and the power module are sequentially connected in a stacked mode, the first circuit board is fixedly connected with the shell, and the power module is arranged on the bottom plate of the shell. According to the power supply module mounting part and the module power supply, the size allowance and the vibration allowance of the power supply module and the first circuit board mounting structure can be met.

The invention aims to overcome one or more defects in the prior art, and provides a plane sliding propelling device for a shield tunneling machine. The plane sliding propelling device comprises a supporting frame, a seat plate arranged on the upper side of the supporting frame and used for supporting the shield tunneling machine, a plurality of sliding assemblies, a plurality of resistance increasing assemblies and a counter-force device arranged at the tail end of the supporting frame, wherein the multiple sliding assemblies and the multiple resistance increasing assemblies are arranged on the lower side of the supporting frame; a telescopic device is arranged at one end of the shield tunneling machine, when the telescopic device extends for propelling, the resistance increasing assemblies are started to increase resistance, and thus the accelerated speed of the shield tunneling machine relative to the seat plate is greater than the accelerated speed of the supporting frame relative to the ground; and when the telescopic device retracts back, the resistance increasing assemblies are started to decrease the resistance, and thus the accelerated speed of the shield tunneling machinerelative to the seat plate is smaller than the accelerated speed of the supporting frame relative to the ground. According to the plane sliding propelling device, according to the different propellingprocesses, friction force between the propelling device and the ground is changed, continuous propelling can be achieved, energy consumption is further saved, and the construction cost is lowered.