52results about How to "Limit relative displacement" patented technology

A turbomachine rotor assembly comprising: a rotor disk (2) presenting slots (4) in its outer periphery; blades (14) fastened via their roots (16) in said slot (4); and shims (20) mounted between the blade roots (16) and the disk (2), each shim (20) comprising two branches (20A) and a base part (20B) interconnecting the branches, each branch (20A) being disposed between the bearing surface (16A) of a blade root (16) and the corresponding bearing surface (22A) of the disk (2); each branch (20A) being made of a first material presenting a first Young's modulus of value E, at any operating temperature in the operating temperature range of the shim (20). The rotor assembly includes pads (40) adhering to the bearing surfaces (22A) of the disk and / or to the bearing surfaces (16A) of the blade root, the pads (40) being made of a second material presenting a second Young's modulus of value lying in the range E / 20 to E / 5 at said operating temperature.

The invention relates to a self-resetting three-way limiting rubber support which comprises an upper support plate (3), a lower support plate (14), rubber laminated layers and shape memory alloy stranded wires (8), wherein the rubber laminated layers are placed between the upper support plate (3) and the lower support plate (14), the shape memory alloy stranded wires (8) are arranged around the rubber laminated layers, and the two ends of the shape memory alloy stranded wires (8) are connected with the upper support plate (3) and the lower support plate (14). Compared with the prior art, the self-resetting three-way limiting rubber support has great shock absorption and limiting capacity under the effect of horizontal and vertical earthquakes, falling-off damage of bridges is prevented, meanwhile, self-resetting of the bridges during earthquakes can be accelerated, in addition, the energy-dissipating capacity is achieved, damage of piers is reduced to the greatest extent, and the restorability of the bridges is improved.

The invention discloses a bridge anti-seismic damper structure with rotational friction energy dissipation. The bridge anti-seismic damper structure comprises a limiting piece, a friction rod, a friction ball, an air cylinder, a piston rod of the air cylinder and a fixed hinge support; the limiting piece is fixed above the side wall of a pier, and the friction rod is fixed in the limiting piece, penetrates through the friction ball and is connected with the friction ball; the bottom of the piston rod is connected with the friction ball, and one section of the top of the piston rod is located in the air cylinder; the top end of the air cylinder is hinged to the fixed hinge support; and the fixed hinge support is fixed at the bottom of a beam body. The bridge anti-seismic damper structure is reasonable in design; the friction ball and the friction rod are arranged, and earthquake energy is consumed by fully utilizing rotational friction caused by beam body displacement; and the air cylinder and the piston rod are arranged, so vibration energy of the bridge during earthquakes is absorbed through damping generated by compressed flowing of air, and relative large displacement of the bridge body and the bridge pier is limited. The bridge anti-seismic damper structure is simple in structure, convenient to construct and low in cost.

The invention discloses a bogie axle box suspension device which comprises an axle box matched with an axle and rubber springs connected with a bogie frame. The axle box is of an integral structure. The axle box comprises a fixed bearing and an axle hole base matched with the axle. The rubber springs are arranged on two sides of the axle hole base respectively. A through kidney-shaped slot is formed in the bottom of the axle hole base. The axle box is further provided with a pull rod installation base, a first bearing platform, a second bearing platform, a shock absorber installation base and other structures, wherein the first bearing platform and the second bearing platform are used for fixing the rubber springs. The bogie axle box suspension device utilizes the rubber springs as axle box locating springs, and the rubber springs have the advantages of being asynchronous in vertical, horizontal and longitudinal stiffness and good in nonlinearity. The axle box is of the integral structure and provided with connecting structures, so that the technical requirements of a quick bogie are met. The kidney-shaped slot in the bottom of the axle hole base facilitates infrared axle temperature automatic detection. A supporting pull rod is connected with a diagonal axle box to form a radial mechanism, so that the overall performance of the bogie is better. The shock absorber installation base, an anti-skid device or a dustproof end cover, and other structures are included, so that the technical performance of the bogie is further improved.

The invention provides a novel energy-dissipation anti-dropping beam device. The novel energy-consumingdissipationate A (1), a connecting plate B (2), an E-shaped energy-dissipation element (3), a high-strength bolt (4), a main beam pre-embedded part (5), a pier pre-embedded part (6), restraining groove holes (7) of the connecting plate B (2) and restraining groove holes (8) of the connecting plate A (1), wherein the restraining groove holes (7), which are matched with the quantity and positions of cantilever limbs of the E-shaped energy-dissipation element (3), are machined on the connecting plate B (2); the length of the restraining groove hole (7) in the middle is smaller than the length of the restraining groove holes (7) at the two ends; the matched restraining groove holes (8) are machined at the positions, corresponding to the restraining groove hole (7) in the middle of the connecting plate B (2), on the connecting plate A (1), and matched screw holes or through holes are machined at the positions corresponding to the restraining groove holes (7) at the two ends. The novel energy-dissipation anti-dropping beam device has the characteristics of reasonable structural form, low manufacturing cost, easiness of mounting and replacing, good energy-dissipation performance and the like and has a good application prospect.

The invention discloses a counterfort structure with an anchorage. The counterfort structure comprises a counterfort, wherein a plurality of rib plates are arranged on one side, back to sea, of the counterfort along the longitudinal direction of a wharf, and reinforcing plates are arranged on the rib plates; an anchorage structure is arranged behind the counterfort, and the anchorage structure and the counterfort are connected through a pull rod to form an anchoring and pulling fixing structure for the counterfort; and a backfill layer is arranged behind the counterfort, and the pull rod and the anchorage structure are embedded in the backfill layer. According to the counterfort structure, the rib plates and the reinforcing plates are designed on one side, back to sea, of the counterfort, and meanwhile, the counterfort and the anchorage structure are connected by adopting the pull rod, so that the structural stability of a wall-mounted retaining wall can be enhanced, the relative displacement between a front rail and a rear rail is limited, a portal crane is safer to use, the later maintenance is reduced, and the width of a bottom plate required for stabilizing a gravity type structure can be reduced, and as a result, the concrete consumption and the engineering excavation amount can be reduced; the structure is particularly suitable for dry land construction, the engineering cost can be saved, and the construction period can be shortened.

The invention relates to a bearing and conveying system which comprises a first platform and a second platform butted with or separated from the first platform, wherein the first platform and the second platform realize the conveying of bearing objects between a first bearing surface and a second bearing surface through the butting of a first butting end and a second butting end. The first platform comprises a first fork plate arranged at the first butting end. The second platform comprises a second baffle and a limit part arranged at the second butting end, the second baffle is rotatably connected with the second platform, and the second baffle is vertical to the direction of the second bearing surface in case of no external force. When the first butting end is butted with the second butting end, the second baffle of the second platform is pushed over by the first fork plate of the first platform, and the first fork plate is matched with the limit part of the second platform to limit the relative displacement between the first platform and the second platform.

The invention discloses a repairing and reinforcing device for cracks in road bridges used in construction engineering, and relates to the technical field of crack repairing in roads and bridges; in order to solve the problem of poor repairing effect of large cracks; it specifically includes a main body, a waterproof mechanism, a primary fixing mechanism and a secondary fixing mechanism. Fixing mechanism, the outer wall of one side of the main body is welded with a first connecting plate, and the outer wall of the other side of the main body is welded with a third connecting plate; the outer wall of the top of the first connecting plate is provided with a first connecting hole; the third connecting plate The top outer wall is welded with a third connection hole. In the present invention, by arranging the first connecting plate, the second connecting plate, the third connecting plate and the fourth connecting plate, when multiple repairing reinforcement devices are used, they can be tightly and firmly connected, thereby enhancing the fixing effect on large-sized cracks; through The arrangement of the washer and the washer groove can further limit the relative displacement between the various repairing reinforcement devices, thereby enhancing the firmness of the connection between the various repairing reinforcement devices.

The invention relates to the field of prefabricated buildings, and specifically discloses a prefabricated concrete building connection structure, including a building body. The upper end of the building body is provided with a circle of step-shaped step grooves along the circumference, and the four corners of the step grooves are provided with The installation groove, the bottom of the installation groove is detachably provided with a hydraulic moving device for moving the adjacent building body, and the bottom of the building body is provided with an annular inner edge protrusion matched with the step groove. The purpose of the invention is to solve the technical problem that the connection of concrete buildings is not firm.

The invention provides a filling mould module and a construction method of the filling mould module. The filling mould module comprises a panel (1), a side plate (2) and an abutting plate (3), wherein convex ribs (5) with 45-degree outer inclined surfaces are arranged on two free sides of the panel (1); the abutting plate (3) and the side plate (2) are vertical to the panel (1), and the included angle formed by the abutting plate (3) and the side plate (3) is 45 degrees; and two modules are abutted face to face to form a maintenance seam (4). In a construction process of floors, single box body or four box bodies as a group are firmly arranged in a horizontal dual-direction clearance manner or one-way clearance one-way tight manner; and the clearance is paved with reinforcement, and then cast with concrete. In the construction process of the wall body, two modules are rotated by 90 degrees face to face to be buckled together to be a box-shaped building block; and the box-shaped building block is built by staggering one half of the width on each layer. The filling mould module and the construction method of the filling mould module have the advantages of being high in the industrialization production degree and simple in filed construction process, thereby the defects of long working period, complicated process and the like in the prior art are made up.

The invention relates to a contact base for connecting two contacts. The contact base includes a contact base body, at least one pair of contact fingers, and a pair of guide rings. The contact base body has a channel for inserting two contacts from the two ends, and an axial limiting hole. The contact fingers and the guide rings are positioned in the channel, and are arranged at the two ends of the channel from inside to outside. The contact base of the invention connects contacts through a simple structure. The contact base has the advantages of low cost and convenient operation. The relative displacement between the contacts and the contact base can be limited, and the contacts and the contact base can be prevented from failure in electrical contact. The invention further relates to a contact system for high-voltage switches which adopts the contact base.

The invention relates to the technical field of bridge seismic mitigation and isolation, and particularly discloses a novel support for relieving constraint during earthquake. The novel support comprises an upper support plate, a middle support plate and a lower support plate which are sequentially arranged from top to bottom, a first friction pair is formed between the upper support plate and the middle support plate, and a second friction pair, a restraining block located at the bottom of the upper support plate and used for limiting relative displacement of the upper support plate and the middle support plate, and a restraining driving mechanism connected with the restraining block are formed between the middle support plate and the lower support plate. Limiting constraint can be actively released when an earthquake occurs, and the earthquake reduction and isolation function is achieved through the pendulum effect of the middle support plate.

The invention provides a bamboo fiber and chemical fiber interwoven fabric and a weaving method. The fabric is formed by interweaving warp yarns and weft yarns, wherein the warp yarns adopt synthetic fibers, the weft yarns adopt bamboo fiber yarns, and the fabric is a warp satin weave. According to the bamboo fiber and chemical fiber interwoven fabric and the weaving method, the crease resistance of the fabric is improved through adjustment of warp and weft and different finishing methods, and the fabric has good air permeability, is stable in forming, soft, comfortable, mould-proof, antibacterial and deodorant.

The invention discloses a waste gas bypass valve assembly for a supercharger and a vehicle. The waste gas bypass valve assembly for the supercharger comprises a volute and a waste gas bypass valve component; the waste gas bypass valve component is arranged on the opening side of a waste gas bypass hole in the volute and can be turned over and opened towards one side; and a limiting protrusion is arranged on the inner side wall of the volute close to the waste gas bypass valve component. When the waste gas bypass valve component is opened to the maximum angle, the limiting protrusion is in interference fit with the waste gas bypass valve component. According to the invention, durable reliability of products can be guaranteed, and noise of the waste gas bypass valve is reduced.

The invention discloses a method for making a bamboo fiber no-ironing shirt. The method comprises the steps that first bamboo fiber fabric is placed into souring and bleaching liquid and is soured and bleached for 30-60min, wherein souring and bleaching temperature is 90-100 DEG C, a liquor ratio is 1: 30-35, the souring and bleaching liquid contains 30% of hydrogen peroxide with concentration being 6-10g / L, sodium silicate with the concentration being 5-10g / L, penetrating agents with the concentration being 5-8g / L, scouring agents with the concentration being 3-5g / L and oxygen bleaching stabilizer with the concentration being 5-8g / L; the bamboo fiber fabric is cleaned and dried after the scouring and bleaching, then the processed bamboo fiber fabric is tailored and sewed and a ready-made garment is obtained; then a no-ironing treatment is carried out on the manufactured garment, wherein according to the no-ironing treatment, bidirectional stereoscopic type atomization resin absorption, pre-drying, medium or high temperature micro-pressure stereoscopic shaping and finishing, washing, drying, cooling and re-shaping are conducted on the garment. The method for making the bamboo fiber no-ironing shirt can effectively improve the crease-resistant property of bamboo fiber and have a better shrink-proof and no-ironing effect, a manufactured shirt has the advantages of being not deformed easily, and not easy to shrink and the shirt is not easily deformed, not easy to shrink and yellowing, stable in size, soft in handle, uniform in color and lustre, and cool and comfortable to wear.

The invention discloses a method for bonding new and old concrete interfaces by means of planting bars. The method includes steps of (1), checking the quality of a base material concrete, and carrying out roughening treatment on the surfaces of the base material concrete with the strength grade not lower than C20; (2), carrying out bar planting construction, including line snapping positioning, hole drilling, hole cleaning, glue injecting, bar planting and acceptance checking, on the base material concrete with the surfaces which are already subjected to roughening treatment; (3), pouring new concrete. The method has the advantages that parameters of the distance between the centers of every two adjacent planted bars, the anchoring depths of the planted bars, the distances from the edges of bar planting locations to the edges of the base material concrete, the relations between the diameters of drilled holes and the diameters of the planted bars and the like are reasonably optimized, and accordingly the purposes of enhancing the new and old concrete bonding strength, improving the stress performance, constraining relative displacement of the new and old concrete interfaces, enhancing the anti-shear ability, effectively controlling damage such as rutting, upheaval and reflection crack of the new concrete and prolonging the service lives can be achieved.

The present invention provides an electrical equipment box. A first opening chamber including a first sealing strip and a first door panel hook protrudingly provided with a first protrusion are arranged at the end of the door panel; a second protrusion and a third protrusion are arranged at the end of a first box plate; the first protrusion and the second protrusion are of a hook-shaped structure;the first protrusion is provided with a first contact curved surface; the second protrusion is provided with a second contact curved surface; the first contact curved surface abuts against the secondcontact curved surface; and the third protrusion is in elastic contact with the sealing strip to realize the sealing of the first box plate and the door panel. The hook-shaped structure of the firstprotrusion and the second protrusion plays the role of limiting the relative displacement between the first box plate and the door panel. The sealing method of the invention realizes sealing without the traditional hinge structure installed on the box door and the box body, reduces the number of parts and simplifies the installation process. The structure is simple and the installation is convenient.