283results about How to "Solve support problems" patented technology

The invention relates to a gob-site entry retaining comprehensive support device, which effectively solves the problems not solved in the prior art that how mechanized formwork erection and whole support are carried out, and realizes difficult problem that filling and coal-mining production are carried out at the same time. The technical key points of the device are as follows: a roadway advancing and retaining support is arranged in a transportation roadway or a return airway; a roadway filling back formwork support, a roadway side filling formwork support and a set of working face hydraulic supports are arranged parallelly in sequence along a roadway; and all supports are vertically connected along the running direction of a transporter; the roadway side filling back formwork support, the roadway side filling formwork support which is arranged on the left of the roadway side filling back formwork support, and an adjustable hydraulic formwork which is arranged on the right of the roadway side filling back formwork support to surround a filling mould cavity which forms a gob-site entry retaining and filling wall. The device has the advantage that the device is favorable for mining a no-coal pillar, is safe and convenient to operate, and is strong in adaptability, can form an insulating gob area in the roadway side and a shield concrete filling wall which is solidified and hardened into a regular wall body, and can shield and match a working face transporter, a coal mining machine and a formwork support to perform normal coal-mining production.

The invention relates to a tunnel supporting structure and a construction method of the tunnel supporting structure, and provides a tunnel supporting structure used for a large deformation stratum. An inner-layer primary support is arranged between a primary support and a secondary lining of the tunnel supporting structure. The construction method includes the steps that when deformation of the primary support reaches variable deformation, the inner-layer primary support is constructed, otherwise, the inner-layer primary support is not constructed, and the secondary lining is constructed according to the practical inner outline of the primary support or the inner-layer primary support. The primary support and the inner-layer primary support are matched, supporting to surrounding rock is initially flexible and then rigid and is initially released and then resisted, active adaptation to deformation of the surrounding rock is achieved, permanent supporting to the surrounding rock is achieved through a strong support formed by the primary support, the inner-layer primary support and the secondary lining, accordingly, the aim of supporting the large deformation stratum can be effectively achieved, and the stability and the safety performance during the running period of a tunnel can be guaranteed.

The invention provides a gas-steam combined cycle power generation system and aims at combined cycle power generation of a SGT6-500 gas turbine to conduct mating redesign on a main engine and an auxiliary engine such as a waste heat furnace and a turbonator. A gas-steam combined cycle which is composed of a new integrated system not only solves the mating problem with the SGT6-500 gas turbine, but also solves the problem that a power generation system works under 60 Hz power system frequency.

The invention discloses a deep foundation pit combination supporting construction method for geology with high water level and large particle size sand gravel. High pressure jet grouting pile construction is conducted outside a foundation ditch retaining and protecting system, by means of a triple placing method, cement paste is injected into underground soil filling layer and sand gravel gaps, after solidifying, secant pile wall and retention wall are formed, the underground water is prevented outside the periphery the foundation ditch retaining and protecting system, and conditions are created for the construction of a support pile; when the strength of outer side jet grouting pile meets design requirements, a long auger drilling cast-in place pile begin to be constructed close to the inner side of the jet grouting pile; after perfusion pile beings maintained for 15 days, jet grouting pile construction begins to conduct to make up partial failure of waterproof curtain of the jet grouting pile in construction of retaining and protecting pile, and retaining and protecting strength and water interception effect of the retaining and protecting system are increased; at last, in an earth excavation process, bar-mat reinforcement sprayed concrete slope protection and construction of dewatering well, open trench and water-collecting well in the foundation ditch are completed well, multiple retaining and protecting forms are used for combining construction and interaction. Accordingly, the problems of retaining and protecting the geology with high water level and large particle size sand gravel and processing the geology are solved.

The invention discloses a supporting method for the construction of a swirl well. By using the supporting method, thin and long rod piece soil nails which are more densely arrayed are placed into an in-situ soil body in a foundation pit excavation process and a reinforced concrete pavement layer is sprayed on a slope surface. A composite soil body is formed by the common work of the soil nails, the soil body and the sprayed concrete pavement layer. A construction of the swirl well supported by a soil nail well comprises the following steps of: excavating one section of the base groove of the swirl well according to a small sloping coefficient; drilling holes by utilizing a drilling machine and putting an anchor rod; grouting and blocking; suspending a steel bar net sheet and spraying fine stone concrete to form a foundation side wall; gradually excavating and gradually carrying out combined bolting and shotcrete on the soil nails until the designed elevation of the foundation pit of the swirl well is achieved; and then, carrying out the section construction process of the cylinder wall of the reinforced concrete and an inner structure from bottom to top. By using the method, the supporting problem of a super-deep foundation pit under a hard soil layer environment is solved; and compared with a drop shaft sinking method, an underground diaphragm wall and a reverse process construction method, the method disclosed by the invention has the characteristics of simple construction process, low construction cost and fast construction speed.

The invention discloses a multifunctional engraving, punching and cutting all-in-one machine, which comprises a framework. A pulley capable of sliding back and forth is mounted on the framework, a head capable of moving left and right is mounted on the pulley, and a punching device, a plasma cutting device and an engraving device are mounted on the head. The multifunctional engraving, punching and cutting all-in-one machine not only has functions of an engraving machine, but also has functions of a punching machine and functions of a plasma cutting machine, and is fast in machining speed, production efficiency is greatly improved, machining precision is enhanced, and production cost is saved.

The invention provides a reducer union of the oil bushing and its prepare technologies. Its technologies contain: 1. hot expanding technology: select material tube, prepare tube, design hot expanding core, heat to , heat processing, rough turn internal and external diameters, detect, take photo, process screw, screw phosphorize / copper facing, package and warehouse entry. 2. hot shrinkage technology: select material tube, prepare tube, design hot shrinkage die, heat to the galling temperature, hot shrinkage distortion in the die, heat processing, rough turn internal and external diameters, detect, take photo, process screw, screw phosphorize / copper facing, package and warehouse entry. The reducer union of the oil bushing contains: the big-end part with internal screw, the small-end part with external screw and the conical part between the big-end part and the small-end part. The favorable effects of this invention are: taking high compression and corrosion resistant bushing as materials to replace the existing process technology and the import reducer union can simplify the technology, improve the working efficiency and lumber rate and resolve the mating problem of the union and high steel bushing.

The invention provides a top hammer type impact rotary power head of a hydraulic drilling machine. The top hammer type impact rotary power head comprises an impact mechanism and a rotary mechanism. The impact mechanism comprises a striking set, a frequency set and a limiting set. The rotary mechanism comprises a rotary set, a reverse striking set, a spline shaft and a reverse striking buffer. The limiting set is connected with the striking set and the frequency set through oil ways. The limiting set controls a piston of the striking set to move, and the frequency set is connected with the striking set and controls the striking frequency of the piston of the striking set. The top hammer type impact rotary power head has the advantages of being simple in structure, high in impacting frequency, large in impact power, wide in application range, long in service life and the like. The top hammer type impact rotary power head can be applied to the hydraulic anchor rod drilling machine, and the impact rotary drilling method is one of the best choices for rock anchoring engineering in which a great number of broken rocks and layers of sand and gravel exist.

The invention provides a self-support type heat exchanger with mixed arrangement of pin-fin tubes and bare tubes, which comprises a shell, a tube bundle disposed inside the shell, wherein the two ends of the tube bundle are respectively disposed on a fixed tube plate and a floating tube plate, the fixed tube plate is fixedly installed between the lower end of the shell and a channel, an upper header is disposed at the upper end of the shell, a shell pass inlet port and a shell pass outlet port are disposed on the shell, a tube pass inlet port and a tube pass outlet port are disposed on the channel, and the tube bundle is composed of bare tubes and pin-fin tubes with high-efficient heat transfer capability in a mixed arrangement. The invention provides a self-support type heat exchanger with mixed arrangement of pin-fin tubes and bare tubes. The inventive heat exchanger has no need of baffles and tube supporting elements; and mixes the pin-fin tubes and the bare tubes together, so that the pin-fins of the pin-fin tubes form mutual support with the bare tubes, thereby achieving the purposes of reducing tube vibration, reducing heat exchanger volume, and improving unit volume heat exchange efficiency of the heat exchanger.

The present invention relates to a large-size and high specific stiffness truss off-axis three-reflection optical system main support structure which mainly comprises a, front plate, a first A-type truss, a second A-type truss, a third A-type truss, a fourth A-type truss, a fifth, A-type truss, a sixth A-type truss, a seventh A-type truss, and a back plate. The technical point is that the seven groups of A-type trusses are combined to the front plate and the back plate through the mode of a threaded connection. Each of the A-type truss comprises an A-type joint, a truss rod, and an I-type joint. The truss rod and the joint are combined together through the mode of glue connection, the mode of glue connection is a sleeve mode, the joint is outside, and the truss rod is inside. The A-type joint is fixed on the front plate, and the I-type joint is fixed at the back plate. The large-size and high specific stiffness truss off-axis three-reflection optical system main support structure has the advantages of compact structure, easy formation of each structure member, easy assembly of a main support structure and a high specific stiffness and can satisfy the use requirement of a large size off-axis three-reflection optical system. The main support structure can be used in the field of large space sensors, space-based telescopes and the like.

The invention discloses a supporting and protecting structure of a foundation pit compound pile wall. The supporting and protecting structure comprises four spiral ground piles. Supporting blocks penetrate through the four spiral ground piles respectively and are each rotationally connected with a vertical plate. The side wall of one end of each vertical plate is fixedly provided with a limiting block. The two vertical plates on each same side form a group, two second supporting plates and a second connecting plate are arranged between the opposite side walls of the two vertical plates in eachgroup, the second connecting plate is located at the lower ends of the second supporting plates, and the two second supporting plates correspond to each other. By improving supporting and protectingstructure, the problem that foundation pit compound pile walls of more specifications cannot be supported or protected is solved; by adjusting the length and width of the supporting and protecting structure, different compound pile walls can be supported and protected; by adjusting the angle, supporting and protecting at different angles can be conducted, construction cost is reduced, safety and practicability are improved, the rigidity and strength of the supporting and protecting structure are improved, and use is convenient.

A synchronizing ring (1) for a synchronizing device of a motor vehicle gearing, with a ring body (2), wherein the ring body (2) has a plurality of recesses (3), and frictional elements (4) are arranged in the recesses (3).

The invention provides a 30MHz-512MHz multi-band 2.5m whip antenna, which mainly solves the impedance matching problem between the antenna and the radio station. The entire antenna includes: a radiator, a coaxial cable 18, and a base 6. The radiator adopts a combined structure of a lower radiator 7 and an upper radiator 5. The lower radiator includes a lower copper tube 1 and an upper copper tube 3, two copper tubes The tubes are connected by a transmission line transformer 2, and a radiation oscillator 4 is fixed in the upper copper tube to form a sleeve antenna structure. The transmission line transformer adopts a three-winding center tap, and is equipped with four coils, which are respectively connected to the inner conductor, outer conductor, upper section copper tube, and lower section copper tube of the coaxial cable. It is used as both an electronic switch and an impedance matching element. Ultra-wideband characteristics in the 30MHz~512MHz frequency band. The invention has the advantages of wide frequency band, small standing wave ratio, high gain, no need for tuning, and can be directly matched with radio stations, and is suitable for installation on various armored vehicles and ships.

The invention relates to an electrolytic cell which can effectively electrodeposit recyclable valuable metal in gold-plated wastewater or valuable metal-containing wastewater for recovery, in particular to an electrolytic cell with a large contact specific surface area for valuable metal recovery, which increases the specific surface area of an electrode contacted by the electrolyzed wastewater to the greatest extent, improves the electrolysis efficiency, expands the electrolysis space and effectively electrodeposits and recovers the valuable metal in low-concentration wastewater. In the electrolytic cell for eletrodepositing the valuable metal in the wastewater through electrolytic reaction by using a cathode and an anode, a shell, an anode assembly and a cathode assembly are arranged, wherein the shell is provided with a flow inlet, a flow outlet and an exhaust hole and has an internal space; the anode assembly covers the internal space and is provided with a plurality of anodes; the cathode assembly is arranged between the anodes by covering the internal space and partitions the internal space into two electrolysis spaces; and ball-like cathode steel wires are arranged on one side of each electrolysis space so as to increase the specific surface area contacted by the wastewater. The wastewater flowing in from the flow inlet passes through a plurality of electrolysis spaces in turn, the valuable metal is electrodeposited on the cathode assembly for coagulating the cathode steel wires to be recovered, and gas is discharged out of the exhaust hole, and the wastewater is discharged to the exterior through the flow outlet.

The invention discloses a polishing method for a high-rise deep-concave spherical lens. When a high-rise deep-concave spherical surface is polished, an elastic rubber cup is used for supporting the lens; and when the surface of the sphere is polished, a protective layer and a filling layer are manufactured on the polished high-rise deep-concave spherical surface, and the lens is supported through the filling layer. The method is simple, reasonable and convenient to implement; by adding the filling layer, the high-rise deep-concave spherical lens can be effectively supported in the polishing process, support with even stress can be achieved without independently customizing a special supporting cup, and the manufacturing cost is greatly reduced. Meanwhile, in the machining process, machining of two faces can be achieved only by one supporting tool, so that the machining procedure is simplified, the machining efficiency is improved, and the polishing method for the high-rise deep-concave spherical lens is rapid and low in cost.

The invention discloses an adjustable coal mining machine rail, which comprises a rack rail, a rack rail fixing mechanism, a movable rack rail seat, a transition board group, a cable trough, and a transporter trough, wherein the movable rack rail seat comprises a connecting plate and a movable seat; the cable trough is fixed on the connecting plate; the transition board group comprises one or more upper round pins, a transition board, and one or more lower round pins, and multiple holes corresponding to the upper round pins / lower round pins are respectively arranged on upper side / lower side of the transition board; the movable rack rail seat is fixed to the transition board by the upper round pins and upper screws, and the transition board is fixed to the transporter trough by the lower round pins and lower screws; and the position of the movable rack rail seat can be changed by changing the holes for installation of the upper round pins on the transition board, thus the distance between the rack rail center and the transporter trough center is changed. According to the adjustable coal mining machine rail disclosed by the invention, a fixed rail for traveling of a coal mining machine on a transporter is arranged to be an adjustable rail, so that the adjustable coal mining machine rail can adapt to be matched with coal mining machines of different machine body widths for use.

The invention provides a double-hydraulic static-pressure supporting type rotatable rock-soil testing machine. The double-hydraulic static-pressure supporting type rotatable rock-soil testing machine is characterized in that a bottom plate and vertical posts are mounted on a base, a lower platform is positioned at a specific height by the bottom plate, the vertical posts and supporting cylinders via through holes at four corners, a ladder-shaped through hole is formed in the center of an upper platform, an upper rotatable table is mounted in the ladder-shaped through hole in the center of the upper platform, a top plate is fixed at the top ends of the vertical posts, a hydraulic servo cylinder is mounted on the lower central surface of the top plate, and a piston rod of the hydraulic servo cylinder is fixedly connected with the upper surface of the upper platform. The double-hydraulic static-pressure supporting type rotatable rock-soil testing machine has the advantages that large-load specimen loading and high-precision rotation can be achieved, so that bulk specimen fracturing tests can be achieved; through high-energy CT (computed tomography) and three-dimensional imaging, rock crack generation and development during fracturing are revealed to be of great significance to rock mechanics progress.

The invention discloses a steel-concrete composite girder construction technology striding over current line and being parallel to existing lines, which comprises the flowing steps: firstly, erecting a supporting falsework, wherein the supporting falsework comprises a plurality of temporary buttresses which are distributed between two buttresses from left to right, and the distribution positions of the plurality of temporary buttresses respectively correspond to the connection position of two adjacent steel grinder sections of a steel grinder body in a construction steel-concrete composite girder; secondly, hoisting the steel grinder sections, wherein a plurality of steel grinder sections constituting the steel grinder body are hoisted in place one by one; thirdly, splicing the steel grinder body, wherein splicing is conducted on the steel grinder body after linetype adjustment and camber adjustment; fourthly, converting the system; fifthly, conducting concrete pouring construction on a ballast channel plate; and sixthly, detaching the supporting falsework. The steel-concrete composite girder construction technology has reasonable design, convenience in the construction, low investment cost, good using effect, high construction efficiency, short construction period and low safety risk, and the adopted supporting falsework has a simple structure and high satiability and is economical and practical.

The invention discloses multifunctional hydraulic support equipment used for a fully-mechanized top coal caving face underground coal mine. The equipment consists of two groups of hydraulic supports and a pushing jack, wherein the two groups of hydraulic supports are arranged forwards and backwards and are of same structures, and the pushing jack is connected with the two groups of hydraulic supports; each group of hydraulic supports comprises two bases, four vertical posts, two top beams and a link mechanism respectively hinged with the corresponding base and the top beam; each group of hydraulic supports further comprises an overturning and telescoping mechanism and a bottom beam adjusting and telescoping mechanism, wherein the overturning and telescoping mechanisms are arranged at one sides of the top beams and are used for adjusting the supporting distances of the top beams according to the width of the fully-mechanized top coal caving face, and the bottom beam adjusting and telescoping mechanisms are arranged at one sides of the bases and are used for adjusting the distances between the bases and other supports. The equipment provided by the invention is simple in structure and convenient to use, 'one support having three functions' can be realized, the research and development expenditure and research and development time can be saved, the production cost can be reduced, and the proper adjustment can be carried out according to the change of the distance between face supports or the width of a roadway, therefore the universal support on the face and the roadway can be realized.

The invention belongs to the technical field of prefabricated building construction and particularly relates to a large-span steel bar truss floor bearing plate assembling type supporting constructionmethod which comprises the following steps of S1, preparing two I-shaped steel beams, and uniformly welding a plurality of force bearing steel plates on the I-shaped steel beams respectively, whereinthe force bearing steel plates are welded to webs and upper wing plates of the I-shaped steel beams respectively; S2, symmetrically arranging the two I-shaped steel beams in parallel, arranging a plurality of channel steel cross beams between the two I-shaped steel beams, and fixedly connecting the two ends of the channel steel cross beams with the corresponding force bearing steel plates throughfirst high-strength bolts; and S3, mounting a steel bar truss floor bearing plate on support erected by the I-shaped steel beams and the channel steel cross beams. In the large-span steel bar truss floor bearing plate assembling type supporting construction method, by adopting assembling type telescopic detachable force bearing beams to support the steel bar truss floor bearing plate, the supporting problem of the large-span steel bar truss floor bearing plate is solved, the supporting effect to the high-altitude large-span steel bar truss floor bearing plate is especially remarkable, materials and labor are saved, and the support can be detached for reuse after concrete pouring of the floor bearing plate is finished.

The invention discloses a construction method for installing a stainless steel spiral stair and by adopting a combined support. The method comprises the following steps that (1) embedded parts are installed; (2) an inner arc line and an outer arc line are drawn on the ground; (3) a combined support system is built; (4) the spiral stair is manufactured into stair sections; (5) all the stair sections are lifted in place in sequence, the lower ends of the next stair sections are fixed to the upper ends of the last stair sections in a spot welding mode; (6) two sight line theodolites are adopted to track and correct installation of the stair sections; and (7) welding joints between every two adjacent stair sections are fixed in an integral welding mode, and then all support bodies are dismounted. According to the construction method for installing the stainless steel spiral stair and by adopting the combined support, the problem that a spiral stair does not have supports in the installing process is solved, installing is convenient, construction efficiency is higher, stability in the installing process is good, and installing precision is also high.

The invention relates to the technical field of billiards, in particular to a billiard set positioner. The billiard set locator includes an upper contact point that can be in contact with the vertical upper hemisphere of the enclosed billiard ball. In the enclosing and limiting structure, the vertical support of the billiard ball to the billiard set locator is realized. At the same time, the billiard ball In the structure where the group locator surrounds the limit billiard group and is vertically supported by the billiard group, the bottom edge position of the billiard group locator is set higher than the vertical bottom position of the billiard group, thus realizing the billiard group position on the tablecloth of the billiard table. In the process of moving the billiard set, the billiard set locator only achieves vertical support through the billiard set, and avoids contact with the tablecloth, thus significantly and completely eliminating the impact of the billiard set locator on the billiard table cloth during use. Anti-friction and scratching, which significantly improves the durability of the tablecloth, improves the service cycle and reduces the cost of use.

The invention discloses an ecological mixed aquaculture method for bitterling and crayfish. The aquaculture method comprises the following steps of preparing a pond, preparing facilities, establishing an ecological environment, stocking the bitterling, stocking the crayfish, feeding baits, carrying out disease control and prevention, catching and harvesting. The invention provides a bait matching method for crayfish aquaculture; the bitterling and the crayfish are mixed in the same water body and water layer serving as natural live baits for ecological mixed aquaculture, so that the bait matching problem for the crayfish is solved, the environment is stabilized, and the purpose of healthy aquaculture of an ecological cycle is achieved. Through implementation of the invention, the method has the advantages of practical technology, low cost, environmental-friendly aquaculture and capability of effectively improving the yield and the composite economic benefit of the crayfish.

The invention discloses a polyimide flexible flat heat pipe. The polyimide flexible flat heat pipe comprises an upper shell plate, a lower shell plate, a liquid absorbing core and a liquid filling pipe. The upper shell plate and the lower shell plate are both made of flexible polymer polyimide, wherein a micro-nano structure with the super-hydrophobic surface is arranged on the lower surface of the upper shell plate, a copper net and micro copper column array composite structure is adopted for the liquid absorbing core, and a steam channel is formed by a supporting copper column array arrangedbetween the upper shell plate and the lower shell plate. The polyimide flexible flat heat pipe has the advantages of being small in thickness and high in flexibility, is suitable for heat dissipationof flexible or curved electronic components, and has extremely high surface adaptability.

The invention discloses an impact hammer for a hydraulic drilling rig. The impact hammer comprises a limiting group, a valve element, a front substrate, a back substrate, a piston, a front buffer and a back buffer, wherein the limiting group is arranged on the front substrate; the valve element is arranged in the limiting group in a sleeving manner; one end of the front substrate is arranged on a power head rotating substrate of the hydraulic drilling rig, and the other end of the front substrate is provided with the back substrate in a clamping manner; the piston is arranged in inner cavities of the front substrate and the back substrate; the front buffer is arranged on the front substrate; the back buffer is arranged on the back substrate; the valve element and the piston are provided with corresponding grooves to form corresponding stress areas. The impact hammer has the advantages of simple structure, high impact frequency, large impact power, wide adaptive surface, long service life and the like and can be used on a hydraulic anchor drilling rig, while in rock-soil anchorage engineering, the drilling rig meets broken rock, sand and gravel most, and an impact rotary drilling method is one of the optimal choices.

The invention discloses a loading platform for a construction elevator. The loading platform comprises a carrying platform and vertical column guide rails; a plurality of chucks are arranged at the side edge of the carrier platform; a steel wire rope control device is mounted on the carrying platform; the vertical column guide rails are mounted about the carrying platform; guide grooves are vertically formed in one of the sides of the vertical column guide rail, close to the carrying platform; the chucks at the carrying platform are stored into the guide grooves; steel wire ropes are arranged in the guide grooves; one of the ends of the steel wire ropes is connected to the top end of each vertical column guide rail, and while the other one of the ends of the steel wire ropes is connected to the steel wire rope control device. With the adoption of the loading platform for the construction elevator, the construction materials can be conveniently lifted to reach the preset height, and the problem that ramp and trolley are used for conveying the construction materials in the prior art can be solved.

The invention discloses a combined anchor cable with high elongation and a mounting method thereof. The combined anchor cable comprises a cable body, a high-elongation sleeve, a lockset, a tray, embedded cards, an annular spring and the like and has the characteristics of high overall elongation and reliable working state. The top end of the cable body is anchored in the deep part of a drill hole; the high-elongation sleeve sleeves the tail end of the cable body; the cable body and the high-elongation sleeve constitute a compact connection structure by virtue of the embedded cards; the annular spring ensures that the embedded cards are regularly arrayed on the cable body during installation, the lockset is fastened in the tail end of the high-elongation sleeve, so that the tray is clung to the surrounding rock. The extreme breaking force of the high-elongation sleeve is equal to 80% of that of the cable body; the outer side of the high-elongation sleeve is provided with a pawl structure matched with the drilling diameter of a shallow part. Meanwhile, a split installation method of the high-elongation sleeve and the cable body is adopted for the cable, so that the cable is convenient to install and fasten and has favorable promotion prospect.