195 results about "Springing" patented technology

A shower device having a flexible, flat jet or spray disk is created, in which at least one surface zone is curved outwards and on exceeding a specific pressing in force (E) exerted thereon springs round suddenly with the curvature inwards into a space located behind it and automatically springs back to the starting position when the force is relieved. As a result of the springing or springing round, it is possible to detach lime deposits from the jet disk.

Vehicle suspension having a control arm pivotally mounted to vehicle body. Wheel support is pivotally mounted to the control arm. A hydraulic strut is pivotally mounted to body at trunnion mount. The wheel may be protracted to be placed vertically on the road surface or retracted at an angle, for example to allow good marine performance in an amphibious vehicle. Strut may be extended or retracted by hydraulic fluid pumped through ports and may also be used for wheel springing and damping. As trunnion mount is part way up the strut, the strut can pivot out of the way of the retracing wheel. A second control arm may also be fitted; this may be part of a double wishbone wheel suspension.

The invention relates to a construction method for integrally sliding a large-span steel pipe arch of a curved bridge, belonging to the field of bridge engineering construction. The method comprises the following steps: firstly, carrying out on-site splicing and welding on the manufacturing and installing sections of a steel pipe arch to form a large hoisting section; then installing a temporary arch-splicing support on a bridge-site longitudinal splicing site position, arranging arch ribs on the temporary arch-splicing support, and adopting an arch springing restraint device to preload arch springings after finishing splicing the steel pipe arch, thus enabling the steel pipe arch to form a stressed entirety; and finally, dismantling the temporary arch-splicing support, and adopting a pushing power system to realize integrally sliding the whole steel pipe arch into a proper position. The construction method of the invention has the advantages of small site occupation, integral hoisting of large sections, less hoisting subsection and less arch-splicing support amount, thus the construction cost is economical, the high-altitude welding quantity is less, the welding quality is ensured, the arch axis linetype control is easy, the steel pipe arch splicing and a concrete beam can be simultaneously constructed, arch splicing is carried out on an ectopic bridge site, the underbridge navigation is not influenced, the construction is safe and the construction progress can be quickened.

In a front wheel suspension on a motorcycle, the front wheel is mounted in rearward-sloping supporting members which, in turn, are mounted on the chassis of the vehicle by bearing units comprising link elements and a springing function. The supporting member and the wheel are turnable about a steering line which slopes in a corresponding manner to the supporting members. The bearing units form separate upper and lower bearing units, which are provided with bearing units in or about which the supporting members and the wheel are turnable. Preferably, the upper bearing unit of the bearing units acts as a combined bearing and steering linkage member for the supporting members. The bearing units are torsionally rigid in their respective planes, which extend through the respective securement points or bearings of the bearing units in the chassis and the supporting members. The upper bearing unit of the bearing units is arranged compliantly for torsion or turning motions which arise in the bearing unit when the supporting member and hence the wheel are allotted steering or turning motions or assume steering or turning positions which differ from the longitudinal axis of the vehicle.

An improved bicycle rear suspension system with a triangular wheel suspension component comprising three members; a planar truss chainstay member with a wide lateral side and a thin vertical side, adapted to be longitudinally and laterally rigid and vertically flexible; a seatstay member with an integrated shock absorbing means adapted to dampen the suspension movement, the shock absorbing means being a long-travel, short-length shock absorber with angular deflection capability; and a seat tube member, arranged in a triangular configuration wherein one, two, or all three junctions between the members are pivotless, thereby eliminating rotating pivot elements and providing a low maintenance requirement, durability, high reliability, low manufacturing costs, progressive springing and damping, a comfortable ride, a compact size, and light weight, while increasing lateral and torsional rigidity and wheel travel, and maintaining the strength and aesthetic appeal of the traditional diamond frame.

The invention discloses a construction method for deformation control via the horizontal whirling jet grouting of a long cantilever in a soft-rock tunnel. The method comprises the following steps of: (1) drilling on the periphery of a dug outline, carrying out the whirling jet grouting while retreating a drill stem, and lowering a first profile component after the whirling jet grouting to form a first profile pile body; (2) repeating the step (1) to construct a first curtain system; (3) drilling on a tunnel face designed in a tunnel, carrying out the whirling jet grouting while retreating the drill stem, lowering a second profile component after the whirling jet grouting to form a second profile pile body; (4) repeating the step (3) to construct a second core earth reinforcing system; (5) carrying out the mechanical digging and initial supporting on a large section; (6) drilling in the arch springing position of middle and lower steps obliquely towards the lower direction of the tunnel at 30-45 degrees, lowering a third profile component to form a third profile pile body; and (7) repeating the step (6) to construct a locking whirling jet grouting pile stabilization system. According to the construction method, the advanced reinforcement of a horizontal whirling jet grouting pile with a highly strong tunnel outline, the binding and deforming effect of a tunnel face glass fiber anchor stem, and the anchoring of the locking whirling jet grouting pile are utilized, and the deformation of rock-soil is effectively controlled.

The invention discloses a steel tube arch rib vertical lifting method, which comprises the following steps: separating the steel tube arch rib into two side sections and middle-section closure sections, taking an arch hinge of a side section arch springing as a rotating point and vertically lifting the two side sections of the steel tube arch rib, adopting a temporary support for respectively stabilizing the two side sections on two lifting towers after reaching a set position; lifting the middle-section closure sections of the steel tube arch rib which is butt-jointed and closed with the twoside sections; the side sections and the middle-section closure sections can be split into two to four pieces of processing sections; the maximum weight of all sections is less than 20 tons; and all the sections can be assembled and welded on the spot before lifting. The steel tube arch rib vertical lifting method has the beneficial effects that the method has little constructional investment, clear structural force, shortcut and convenient construction process, and effectively solves the technical problem that the steel-tube arch is transferred and assembled into in a hoisting section in theconstruction process of a little span, low height and first-beam and post-arch arch bridge and the section of the steel-tube arch is arranged in place.

The invention discloses a lifting installation method of an integral bridge arch rib, which has the technical scheme that: a lifting support is arranged at a main pier or arch springing, hoists the arch springing after corresponding to the two ends of the arch springing, and does not to be arranged at the middle part of a bridge, so the times for transporting the arch springing is reduced, one transportation is only needed, and the hoisting is accurate, thus the influence of the bridge construction on riverway navigation is reduced, the occupied time and the space of the riverway navigation are reduced, and higher economical benefit is brought.

The invention discloses a method for reinforcing a double arch bridge, which belongs to the technical field of bridge reinforcement. The method comprises the following steps of: grinding and cleaning the inside of an arch tile and the surface of an adjacent arch rib, and spraying an epoxy interface agent; drilling a through hole from the arch back to the lower side of the arch tile; implanting a structural main reinforcing steel bar at an arch springing; implanting a constructional steel bar from the lower side of the arch tile to an arch plate; slightly jacking each control section of the arch rib and applying a pre-stress to the control section; binding the steel bars below the arch tile to form a steel bar framework; mounting a template below the steel bar framework between the arch ribs; casting micro-expansion concrete in a closed space formed among the arch rib, an arch support and the template below the arch tile from the through hole; unloading a jack after the micro-expansion concrete to be cast reaches the strength of a design requirement; and dismounting the template to finish the reinforcement of the double arch bridge. The method entirely solves the problem of poor composite structure of the double arch bridge, greatly improves the bearing capacity of the bridge and can be widely applied to the reinforcement and reconstruction of the existing double arch bridge.

The invention relates to a construction method for a subway station body. The construction method includes the following steps that pilot tunnels are excavated, and primary support is constructed; after cutthrough of each lower pilot tunnel, a strip-shaped foundation of each lower side pilot tunnel is constructed; pile top beams and large arch springings are constructed on the upper layer side pilot tunnels in a moulding mode; the inner side of the upper layer middle pilot tunnel is reinforced through a top longitudinal beam, a ground layer is reinforced through preliminary grouting in advance, and a soil body part I is excavated symmetrically left and right; a soil body part II is symmetrically excavated, and arch primary support is constructed; after cutthrough of the primary support, a medium partition, a waterproof plate and a protective layer are cut off in a segment mode through an inverted supporting method; excavation is downwards performed in a layered mode in the longitudinal direction of a subway station to the bottom elevation of a station hall plate; after medium plate concrete reaches design strength, excavation is downwards performed in a layered mode by 3.5 m along the longitudinal direction of the station; slope excavation is longitudinally performed downwards in a layered and segment mode to the position of 370 mm below the bottom elevation of the station hall plate according to the scale of 1:1, a thick section steel sprayed mixed cushion layer, a waterproof layer and a waterproof protective layer are constructed; a side wall waterproof layer is laid, and side wall concrete is poured; an inner structure is constructed to finish structure construction of the station. The construction method has the advantages of being high in efficiency, short in construction period, safe in construction and the like.

The invention relates to a suspended support arch shell structure comprising a net shell, an arch, a stay bar, a radial pull rod and an annular pull cable. The arch is replaced by a part of rod members of the net shell, and the lower part of the net shell structure is provided with a vertical stay bar, the radial pull rod and the annular pull cable to form the suspended support arch shell structure. The net shell adopts a single layer of spherical net shell, a single layer of ellipse spherical shell, double layers of spherical net shell and double layers of ellipse spherical shell. The invention has the advantages of overcoming the defects of poor stability of the single layer of net shell or the double layers of net shell with thinner thickness and small spanning capability and the defects of difficult processing of horizontal push force of an arch springing support base of an arch structure by fully utilizing matured installation technology of the net shell, strong spanning capability of the arch structure and high intensity tension performance of a cable material, thereby a structure system with large spanning capability, favorable stability, reasonable economy and convenient construction is formed, and the invention is universally suitable for common industry and civil architecture, in particular to large-spanning space structure systems, such as convention centers, stadiums and the like.

The present disclosure relates generally to systems for providing a durable water-resistant and fire-resistant foam-based seal in the joint between adjacent panels. A fire-resistant and water-resistant expansion joint seal is provided which includes one or more foam members and a plurality of intumescent members interspersed within the foam member or members to provide a spring recovery force and fire resistance.

The invention provides a control method and a control device of a terminal for reducing broken probability and the terminal, which belong to the technical field of electrons. The method comprises the following steps of: obtaining an acceleration value on the gravity direction of the terminal when falling and the shell facing to the gravity direction at which side of the terminal; judging whether the terminal currently is in a free falling state according to the obtained acceleration value; and if confirming that the terminal currently is in the free falling state, enabling a main board of the terminal and the shell facing to the gravity direction at one side to be separated under the action of an elastic part between the main board and the shell when the free falling time of the terminal is larger than a set value, and enabling the main board to be sprung towards the direction opposite to the falling direction of the terminal under the action of the elastic part. The invention also provides a control device and a terminal. In the invention, the collision kinetic energy of the main board and the ground is reduced through the mode of springing and separating the main board from the shell in the falling process, thereby reducing the broken probability of core parts of the terminal.

The invention relates to an assembling and lifting method of a half-span skeleton of a tied arch bridge, which comprises the following steps that: A. an arch rib section perform rack and a deck stiff skeleton section perform rack are erected on a jig to be assembled into a first arch rib section and a first deck stiff skeleton section; B. the first arch rib section is lifted onto an assembly support, and a lifting rod is arranged between the first arch rib section and the first deck stiff skeleton section to be assembled into a half-span lifting bridge skeleton; C. the construction of piers and arch springing is carried out, and a second arch rib section, a second deck stiff skeleton section, a third arch rib section and a third deck stiff skeleton section are built on the arch springing; and D. the half-span lifting bridge skeleton is lifted over a riverway for folding installation. The invention relates to the technical field of bridge construction. According to the assembling and lifting method of the half-span skeleton of the tied arch bridge, a support does not need to be erected, the number of closure of navigation is few, the time of closure of navigation is short, the horizontal thrust of the arch springing can be well controlled, and the construction precision is high.

This invention relates to a kind of steel arch bridge arch rib's big segment installing closure method and hoisting system. The installing closure method includes the following steps: divide the whole arch rib into one middle big segment and several pairs side segments, then install all the side segments except the middle big segment from side to middle, pull the level temporary tie bar to form the tie bar arch among the middle big segment both sides' arch springing, upgrade the tie bar arch and install closure, remove the level temporary tie bar and other temporary support, convert the arch rib's power form which is from bent girder and tie bar arch to the arch. The hoisting system includes two middle lift towers and pressing tower cable. The two middle lift towers connect with two-back-cable's and two-sling's one end. The other end of two-sling connects with the waiting upgrade's middle big segment. The other end of two-back-cable connects with anchor block. The back-cable is synchronization pulling back-cable which bases on the sling's level function power to middle lift tower, it uses the synchronization adjust pulling power. This invention simplifies the construction step and improves the closure's precision. It lowers the construction difficulty and shortens the construction period.

Sigma Σ-spring is a spring of a Sigma Σ-shape resembles the capital Sigma Σ letter, above which mass can be suspended vertically while under static or dynamic loading conditions. The outer two arms of the Σ-shape of the spring are inclined such mat to be horizontal while fully loaded ensuring safe compression pattern and providing pre-stressed condition that reduces stress at critically stressed sections. The Σ-shape has two opposite sets of turns of different sizes one of small radius of curvature at the side of line of loading of the mass that can be suspended vertically and the opposite one has large radius of curvature in order to maximize spring vertical deflection capability. Thickness throughout the Σ-spring developed length is graduated in order to minimize induced stresses, weight, and cost. Stiffness of the Σ-spring can be adjusted in compact space condition through increasing or decreasing number of turns of the Σ-spring. The Σ-spring is made of Polymeric Matrix Composite of resin strengthened by mineral clay powder providing built-in damping in addition to springing. Σ-spring of built-in damping can suspend mass passively as a stand-alone spring providing both of springing and damping, or semi-actively through two opposite Σ-springs of built-in damping providing both of springing and damping.

Provided is a concrete arch bridge arching method which is suitable to be used for a huge-scale concrete railway long span arch bridge. Under the condition of not increasing the cross section size of a main arch ring, the method effectively reduces pressure stress of outer wrapped concrete on the position of the main arch ring, poured in early time, so load carrying of arch rings is more uniform, and related specification requirements are satisfied. A concrete arch bridge comprises a concrete filled steel tube stiff skeleton and an outer wrapped arch ring concrete structure. After pouring of a side box bottom plate of the outer wrapped arch ring concrete structure is completed, a certain range of an arch springing is selected, and a whole-section outer wrapped arch ring concrete structure is firstly formed, and unbalance loading on the main arch ring is adjusted through stretching a certain number of arch springing whole-section outer wrapped segment buckle cables and arch springing whole-section outer wrapped segment back cables, and the arch springing whole-section outer wrapped segment buckle cables and the arch springing whole-section outer wrapped segment back cables are removed after a side box concrete cross section of the outer wrapped arch ring concrete structure is completely formed.

The invention provides a self-adaptive feet-lock bolt integrated device applied to the tunnel stepwise excavation process and an application method thereof so that effective control of broke and weak surrounding rock tunnel large deformation is realized. A large-area arch springing bearing plate is arranged at the steel arch springing part so that arch springing bearing area is enlarged and arch springing bearing force is increased; integral settlement of the tunnel is measured by an arch springing bearing plate slide surface scale; feet-lock bolts are self-adaptive to different angles of installation via elastic ball nuts; meanwhile, the size of the applied pre-stress can be reflected by the amount of compression of the elastic rubber ball nuts, and impact energy is absorbed simultaneously so that preliminary supporting of the tunnel is enabled to be more systematical and safer, and preliminary supporting time is shortened by the prefabricated form.

The invention relates to an arrangement and a method for height adjustment of the upper attachment point of a safety belt, arranged in a vehicle with a vehicle seat which is spring-mounted in the vertical direction, where the upper attachment point is arranged displaceably in the vertical direction on the body of the vehicle. Said height adjustment takes place as a function of the springing movement of the vehicle seat, which results in the upper attachment point always remaining correctly positioned in the vertical direction.

This invention relates to a kind of three strides serial rigid steel arched bridge. It includes the medium bear main arch rib, the main arch deck which connects with the main arch rib through suspender and the medium bear side arch rib which is on both sides of main arch rib, the side arch deck which connects with the side arch rib and fixes it through the suspender. The main arch rib connects with the side arch rib's inner side arch springing through the triangular rigid structure on main frusta. The side arch rib's outer side arch springing connects with side frusta through support abutment. On both sides of side arch deck there is flexible tie bar, the side arch rib's outer side arch springing and the side frusta's connecting support abutment are portrait glide support abutments. The main arch deck is steel structure or steel mixture combination structure. The side arch deck is the concrete structure. This invention improves the whole bridge's rigidness by optimizing the structure. It makes the main frusta's imbalance flexural torque and level force become small. It lowers the base design difficulty and saves the bridge's steel usage. It also saves the investing cost. Its three strides serial rigid steel arch becomes more beautiful and harmony on appearance.

A protective device for automatic open close umbrellas is revealed. The protective device includes a ratchet mounted in a handle and rotating elastically for retracting or releasing a string, a string whose bottom end is fixed on the ratchet while a top end is fixed on an outer tube of an umbrella shaft or a core tube, and a locking member that is reverse L-shaped and is arranged with an elastic member for turning back therein. The locking member includes an upper part, a lower part, and a middle axle, used as a first-class lever. The upper part is against the bottom of the umbrella shaft so that the fastener can lean against a top surface of the upper part. When the umbrella shaft is gradually folded, the top surface of the upper part of the locking member is separated from the fastener while the bottom of the lower part is locked to one of the ratchet teeth of the ratchet elastically so as to achieve anti-springing effect.

The invention relates to the technology of cantilever assembly steel arches for an arch bridge, and particularly relates to a construction method for cantilever assembly steel arches for a cast-in-situ large-span concrete arch bridge. According to the invention, the steel arch is formed by jointing a standard segment, an adjustment segment, an arch crown segment and an arch springing segment, a construction process mainly comprises assembly for the steel arches and transversal movement for the steel arches which are performed simultaneously at the both sides spanned by the bridge during construction. The construction method is characterized in that a transversal system adopts a transversal connection mode, and an arch top surface and a floor adopt a flat connection mode during a segment connection process; the segments are connected by adopting bottom chord pin shafts and top chord bolts; and the specific construction is performed according to six steps including arrangement for a steel arch abutment, assembly for steel arch segments, arrangement for a transversal cable wind rope, pavement for a main arch ring, detachment for the steel arches, and transversal movement for the steel arches. The method is saving in material use, high in speed, reasonable in structure, advanced, economic and practical in technology, and suitable for arch bridges with different spans.

A vibration damper, e.g. for damping retraction or extension springing forces on motor vehicles, includes a pressure medium cylinder in which a piston with a piston rod is axially slidably arranged. The piston divides the cylinder into first and second chambers which contain an electrorheological or magnetorheological fluid as a pressure medium. The two chambers are connected with one another through a throttle gap with at least one field generating element arranged adjacent thereto. The length of the throttle gap is divided by a gap intersection point into a first throttle gap section connected with the first chamber, and a second throttle gap section connected with the second chamber. A non-return check valve is arranged in a bypass gap connected parallel to the first throttle gap section between the gap intersection point and the first chamber.

The invention discloses a quick dismantling method for a multi-span continuous double arch bridge causing a connected arch effect. The quick dismantling method comprises the following steps of: (1) coffering a river channel and ensuring that fragments and residues during bridge dismantling can be cleaned in time; (2) pumping water and dredging to leave a construction site; (3) closing a navigable river and ensuring the safety of navigable vessels; (4) dismantling the railing and bridge surface concrete and reducing objects falling on the bridge surface; (5) sequentially chiseling off the arch ribs from the middle of an arch springing toward two sides; (6) enabling the bridge to continuously collapse by using the connected arch effect; and (7) treating wastes. According to the quick dismantling method disclosed by the invention, the construction period can be effectively shortened and the construction safety is improved; and the phenomenon that the river channel is blocked in the dismantling process is avoided by dredging a cofferdam, so that the construction cost is greatly reduced.