2194results about How to "Reasonable force" patented technology

The invention relates to a dismountable locking mechanism of a drawer slide rail and a side plate. The dismountable locking mechanism comprises a side plate, a bottom plate and a slide rail assembly used for opening and closing a drawer, wherein a front connecting element for connecting a front panel and a back connecting element for connecting a rear back plate are arranged on the side plate, a groove position for accommodating the bottom plate is arranged in the side plate, the bottom plate is arranged on the groove position and acts on a movable slide rail of the slide rail assembly, a dismountable locking mechanism is arranged between the side plate and the movable side rail, and the movable side rail is detachably connected with the side plate through the locking mechanism. The dismountable locking mechanism has the advantages that the groove position used for fixing the bottom plate is arranged in the side plate, the bottom plate directly acts on the movable slide rail after the assembly is completed, the drawer stress is more uniform, the work loss of each component is smaller, the service life is longer, the inner wall of the side plate is vertical, the thickness of the side plate is effectively reduced, the use space of the drawer is increased, in addition, the side plate and the movable side rail are detachably connected through the dismountable locking mechanism, the dismounting and the mounting of the side plate and the movable slide rail are fast and convenient, the manufacture and maintenance cost is low, the integral design of the drawer is favorably realized, and the drawer is tidier and more attractive.

The invention relates to a high-altitude long-span overhanging corridor type reinforced concrete structure and a construction method, wherein the corridor part is a stiff beam structure; with own bearing capacity of a profile steel, a beam template supporting system is a hung template supporting system in such a manner of fixing a square steel by means of a U-shaped screw and a nut; a floorslab is a self-supporting steel bar truss template which is welded to a pre-embedded steel plate on the stiff beam by means of a pin; and a steel platform is arranged on a corresponding floor at the lower part of the corridor as an operating and safety protection platform for template support construction. The high-altitude long-span overhanging corridor type reinforced concrete structure and the construction method have the advantages that: the template supporting construction method, according to which the operating platform is built from H-steel or profile steel beams, the stiff beam is hung and is self-supported and the floorslab is self-supported, is employed, so that the problem of difficult template supporting of the high-altitude long-span overhanging corridor structure, the revolving materials are greatly saved, the construction cost is reduced, the construction progress is accelerated and the safety is ensured; and the steel plate is pre-embedded on the stiff beam, so that the floor bearing plate is effectively connected with the stiff beam and the floor bearing plate and the stiff beam are capable of acting together to ensure the safety of the structure.

The invention discloses a mobile lifting platform labor-saving device, which consists of a chassis, a platform, a shearing fork rod, a pulley, a wire rope, and a wire rope loop cylinder, and is characterized in that the chassis of a vehicle is provided with the labor-saving device; when the mobile lifting platform is lifted initially, the labor-saving device is lifted firstly, and lifts the shearing fork rod through the wire rope with small force on an advantageous position, or pushes the shearing fork rod to lift through a hydraulic cylinder to increase the included angle on the ends of the shearing fork rod and reduce the stress of the shearing fork rod; and then the shearing fork rod gets rid of contacting the labor-saving device and is stressed in full load to lift. The various labor-saving devices improve the factor that the prior device is stressed adversely in initial lifting, and greatly reduce the stress of the shearing fork rod in the initial lifting. When the mobile lifting platform has the same load as the prior mobile lifting platform, the stress applied on the shearing fork rod in the initial lifting is about one fifteenth of that of the prior platform in the initial lifting, and the self weight of equipment can be reduced more then twice; and the labor-saving device has the advantages of simple operation and time conservation.

The invention discloses a claw beam lifting mechanism for a forging manipulator, applied to forging industry. The claw beam lifting mechanism mainly comprises a front lifting part, a rear lifting part, a synchronous connector rod, a lifting cylinder, a pitching cylinder and a buffering part, a front fixing shaft in the front lifting part, a rear fixing shaft in the rear lifting part and the lower end of the lifting cylinder are respectively connected with a large machine frame through hinges, the synchronous connecting rod is arranged overhead and always moves in a range above a connecting line of a front fixing hinge point and a rear fixing hinge point of a claw beam lifting and pitching mechanism and the large machine frame, front ends of two buffering cylinders are respectively connected with tow front lifting connecting rods through hinges, the rear ends of the two buffering cylinders are respectively articulated with two ends of a compensating beam, and the middle part of the compensating beam is connected with the middle part of the large machine frame by a hinge through a beam fixing shaft. The claw beam lifting mechanism has novel and scientific design concept, reasonable stress application, high movement precision, simple structure, low manufacturing cost and is convenient to install, adjust and maintain. The invention not only reduces the manufacturing cost of the lifting mechanism under the condition of ensuring the movement precision, but also thoroughly solves the problems that the front fixing shaft and a shaft sleeve matched with the front fixing shaft are worn easily and a side plate of a machine needs to be thickened specifically.

The invention discloses a steel-super high performance concrete composite beam based on a ribbed plate type bridge deck and a construction method. The construction method includes the following steps that step1, steel beams are machined, manufactured and installed; step2, shearing force connecting parts are welded; step3, the super high performance concrete bridge deck is constructed; step4, a guardrail or an anti-collision wall is constructed; step5, bridge deck pavement is constructed, wherein the super high performance concrete bridge deck and the steel beams are fixed through the shearing force connecting parts, the cross section or / and the longitudinal section of the super high performance concrete bridge deck is / are of a ribbed plate structure, and pre-stressed reinforcements can be arranged on a longitudinal rib region or / and a transverse rib region. The composite beam is reasonable in stress, high in strength and capable of substantially reducing the structure dead weight, effectively avoiding defects at a hogging moment region of a composite continuous beam and bringing tensile strength, compressive strength and high durability of super high performance concrete into full play; the composite beam has the advantages of being small in building height, high in rigidity, small in dead weight, good in durability, crack resistance and fatigue resistance and the like, and has great practical value and good economic benefits.

The invention discloses a foundation pit support method with pile and anchor, belonging to an external staying support technique field of the supporting structural retaining of the foundation pit, comprising that: a. bored piles are constructed to form a retaining wall, after lofting of the pile location according to the planar graph of the pile location; b. the soil is excavated to the bottom elevation of the top beam; c. the bored piles are chiseled to the design elevation; d. the first row of anchors are constructed in the soil layer between the adjacent bored piles; e. the top beams are constructed; f. the soil is excavated to the constructing position of the second row of anchors; g. the second row of anchors are constructed; h. the processes of f and g can be repeated until to the last row of anchors, according to different design conditions; i. the soil is excavated to the bottom of the foundation pit. The foundation pit support method with pile and anchor has the advantages of avoiding a lot of inner supports, providing an open working face for soil excavation, creating a good condition for mechanized construction, increasing the construction progress, needing not to treat the water stop of supporting, bracing substitution, dismantling support during the subsequent construction of the basement, convenient construction, increasing the progress, reducing the construction cost.

The invention relates to a motor direct-driving bogie comprising a framework, wherein the framework is provided with a traction device, a foundation brake device, a secondary spring and a wheel set driving system; the wheel set driving system comprises a driving motor, an axle passing through a central hole formed in the driving motor and two wheels arranged at two sides of the axle; the framework comprises side beams located at two sides and a beam fixedly connected with the side beams located at two sides, and the bottoms of the side beams are fixedly provided with supporting plates; and the foundation brake device is fixedly arranged on the supporting plates and the side beams. By using the motor direct-driving bogie, a wheel set is directly driven by the motor, and a gearbox and a shaft coupling are not needed to be mounted, so that the weight of the driving system is greatly reduced, the energy utilization efficiency is increased, and the noise under a vehicle is reduced. Due to the adoption of a fixing way of the foundation brake device, the load of the beam is reduced, and the stress of the framework is more reasonable.

The invention provides a sliding bottom electricity-taking and self-locking electric bus battery quick-change pellet device. The electric bus battery quick-change tray device comprises a pellet and a locking and unlocking mechanism (3) mounted on the pellet. According to the invention, the battery box can be correctly positioned and reliably locked reasonably; the force is reasonably applied to the battery box; simple structure and simple and reasonable power wire splicing mode are obtained; and the arc discharge phenomenon can be effectively prevented.

The invention discloses a steel bar truss stiffened steel concrete composite shear wall, relates to a shear wall and belongs to the field of building structures. The steel bar truss stiffened steel concrete composite shear wall aims to solve the problems that an existing steel concrete shear wall is poor in anti-seismic property, prone to crack and complex in construction when connected with steel members. The steel bar truss stiffened steel concrete composite shear wall comprises a second stiffening member, concrete, a first stiffened steel body and a plurality of shearing-resistant connecting keys. The first stiffened steel body comprises a first stiffening member, two steel plates, a plurality of transverse steel bars and a plurality of steel bar trusses. Each steel bar truss comprises two erection steel bars and three longitudinal steel bars, wherein the three longitudinal steel bars are arranged in a triangular shape, and the steel bar trusses are arranged in parallel between the two steel plates in the horizontal direction. The erection steel bars are connected to the steel plates. The transverse steel bars are horizontally arranged between the two steel plates, and the transverse steel bars are connected with the steel bar trusses. The first stiffening member and the second stiffening member are provided with the shearing-resistant connecting keys, and the concrete is poured on the first stiffening steel body and the second stiffening member.

The invention relates to a holed excavation supporting structure for a light and dark junction section of a tunnel in a bias pressure state and a construction method. In a supporting mode combining a bias pressure earth retaining wall and a cover arch, the unilateral bias pressure of the tunnel is balanced, thus ensuring the safety of a tunnel structure and safe holed excavation of the tunnel. With the adoption of the holed excavation supporting structure and the construction method, a slope is prevented from being destroyed in large area due to open cut tunnel excavation, and original ecological vegetation is protected to keep the slope intact and avoid landslip due to heavy excavation, so that neither engineering construction or environmental protection is neglected, and the engineering cost is also greatly lowered. The holed excavation supporting structure and the construction method can be widely applied to tunnel building in a mountainous hilly area.

The present invention discloses a hydraulic pressure changer, formed from shell, front end cover, rotating shaft, plunger, cylinder, port plate and rear end cover. According to the working principle of hydraulic pressure changer it utilizes the control of rotating angle of port plate of said hydraulic pressure change, regulation of flow rate change of three oil holes of the pressure changer and further control of output pressure of the pressure changer to drive lienar load or rotary load to make it move. By adopting special port plate and rear end cover structure said invention can resolve the oil liquor throttling loss between the port plate and rear end cover, exaggerate the pressure-regulating ratio range of hydraulic pressure changer and can make it implement the functions of regulating pressure.

The invention belongs to the field of building structures, and in particular relates to a structural system of an industrial low storied dwelling adopting modularized design, factory production and field mounting. The structural system of the industrial low storied dwelling comprises steel columns, steel girders, inter-column supports, steel girder horizontal supports, floor slabs, connecting nodes between the steel columns and a foundation, the connecting nodes between the steel columns and the steel girders, the connecting nodes between the steel columns and the inter-column supports, the connecting nodes between the steel girders and the steel girder horizontal supports, rigid connection nodes between the steel girders, the connecting nodes between the steel girders and the floor slabs, roofing surrounding systems and wall surface surrounding systems, wherein the steel columns are connected with the foundation through pre-embedded bolts; the steel columns are connected with the steel girders through bearing type high-strength bolts; the steel columns are connected with the inter-column supports through ordinary bolts; the steel girders are connected with the steel girder horizontal supports through the ordinary bolts; the steel girders are in fully rigid connection through continuous girders; the slabs are connected with the steel girders through male pins or special fasteners; and each of the roofing surrounding systems and the wall surface surrounding systems is of a block type. The structural system of the invention has the characteristics of clear stress of the structure, simple component connection, convenient and quick mounting, attractive appearance, good rationality and economical efficiency of unit steel amount, and is favorable for industrial production.

The invention discloses a strain clamp of an aluminum alloy core aluminum stranded wire. The strain clamp comprises a steel anchor and a jumper clamp which is connected with the steel anchor, wherein an anchor head is connected with the rear end of the steel anchor; an external surface of the anchor head, from inside to outside, is sequentially sleeved with an inner-layer pressing connection pipe and an outer-layer sleeve; and a cavity into which an inner core of the aluminum alloy core aluminum stranded wire to be connected is embedded is formed in the inner-layer pressing connection pipe. By adding the inner-layer pressing connection pipe and the outer-layer sleeve which sleeves the inner-layer pressing connection pipe, when the aluminum alloy core aluminum stranded wire presses the strain clamp, a pressing force can be applied to a lead through two pipe walls, so the pressing force is dispersed to the forced steel anchor, the aluminum stranded wire can be forced uniformly, and the grip strength of the strain clamp on the aluminum stranded wire is improved. The strain clamp of the aluminum alloy core aluminum stranded wire is simple and reasonable in structure, convenient and reliable to anchor, reasonably stressed, and widely applicable to erection of a power transmission line of the aluminum alloy core aluminum stranded wire.

The invention relates to a heavy-load type oil-gas spring independent suspension steering drive axle which comprises a central main reducing gear assembly, an upper cross arm, a lower cross arm, a hub reducing gear assembly, a double-rzeppa type constant velocity universal transmission shaft, a steering joint seat, an oil-gas spring and a steering rod system, wherein the central main reducing gear assembly is located in the center of the steering drive axle and fixedly connected to a frame, and structures of the heavy-load type oil-gas spring independent suspension steering drive axle at the left end and the right end of the central main reducing gear assembly are the same and symmetrically distributed. The steering joint seat is adopted, thus stress in the front, back, left and right directions of the whole steering drive axle trends to be more uniform and reasonable, the steering drive axle has higher traveling smoothness and better maneuverability, and the regulation of ground clearance can be realized at the same time of regulating the height of the frame. The upper cross arm and the lower cross arm of the heavy-load type oil-gas spring independent suspension steering drive axle are respectively of an integral structure, thereby improving the structural rigidity. Both ends of the upper cross arm and the lower cross arm are respectively connected with the steering joint seat and a main reducing gear shell through pin shafts, and the reasonable optimization of swing arm connection points ensures that the changes of wheel tracks and wheel inclination angles are the minimum when wheels jump up and down to the limit, thereby improving the controllabitity and the stability of a chassis.

The invention discloses a multi-chamber type steel tube concrete special-shaped column, consisting of U-shaped steel, a rectangular steel tube and concrete cast in the tube. The U-shaped steel is mutually welded with the rectangular steel tube to form special-shaped columns with different sections. The whole section is divided into a plurality of chambers by the U-shaped steel and the rectangular steel tube, and the concrete is filled in the chambers. The U-shaped steel is formed by bending or welding a steel plate and the rectangular steel tube is formed by directly welding or first blending and then welding the steel plate. By dividing the section into a plurality of chambers, the special-shaped column can enhance the interaction between the steel and concrete, reduces the ratio of width to thickness of the steel plate and is beneficial to give full play of material performance and the improvement of section performance; and the directly stressed U-shaped steel and the directly stressed rectangular steel tube decrease the dimension of sections, eliminate the negative angle of 90 degrees, boost the bearing capacity of the special-shaped column and improve anti-seismic performance. The special-shaped column is simple in manufacture, guarantees the quality of concrete vibrating and casting, is convenient for construction and manufacture and has comparatively good economic benefits.

The invention relates to a novel car body structure of a full-loaded purely electrical passenger car. In the car body structure of the full-loaded purely electrical passenger car, a passenger front door (1) and a passenger rear door (2) are formed in the front and rear sections of the car body; integral diagonal brace girder structures (6) and (8) are formed in the part between the upper and lower waist beams of the side body and the middle keel part of the car body; the upper and lower waist beams (3) and (4), lower side beams (5) and a keel longitudinal beam (15) are communicated; a motor is arranged in the middle; and a power battery packs are arranged in the middle section of the car body. The structure is a whole, and the middle section of the car body has high carrying capacity. The structure is optimized by a full-loading technique, so the non-axial loads of the rod pieces of the structure are reduced effectively, the stress of the members of the structure are more reasonable, and the load distribution is more uniform. Therefore, the strength and rigidity of the car body are both improved effectively.

The invention discloses a high-temperature slag handling technology by the tilting roller process and a high-temperature slag handling device. The handling technology includes that high-temperature metallurgical slag is poured into a rotating working barrel body with a certain angle of inclination in the axial direction by a loading hopper; the slag in a front barrel body of the working barrel body is fast cooled by a cooling medium and the cooling water sprayed by a spray head in sequence and then crushed; the cooled and crushed slag particles are driven to drop from the gaps among cage bars and the gaps between the cage bars and a barrel body shoveling plate into a lower chamber filled with the cooling water to be cooled for the second time; along with the rotation of the working barrel body, the slag particles soaking in the cooling water in the lower chamber are carried to the upper part of the front barrel body by the barrel body shoveling plate provided with dewatering holes, poured into an open discharging chute and conveyed out of the device; the cooling water that carries fine slag particles and is separated by the barrel body shoveling plate flows to a rear barrel body, and the fine slag particles separated and intercepted by a netty slag-water separating device arranged on the rear barrel body are sent to the discharging chute and conveyed out of the device by a small shoveling plate arranged on the internal side surface of the rear barrel body.

The present invention relates to a diamond trussed traveling form. Said diamond main truss is formed from upper frame, lower frame, front frame and rear frame which are connected together and formed into diamond shape. Said upper frame is inclined towards front-lower side, the front end of upper frame and front end of front frame are fixed on the front support abutment, its upper frame and upper end of rear frame are fixed on the upper support abutment, its rear frame and rear end of lower frame are fixed on the rear support abutment, the front end of its lower frame and rear end of front frame are fixed on the lower support abutment; between lower support abutment and upper support abutment a door-shaped rear hanger frame is connected, on the front support abutment a front hanger beam is fixedly connected; the front hanger beam and the door-shaped rear hanger frame are connected with a suspended mechanism, front end of said front hanger beam is connected with an auxiliary hanger frame, between the rear end of front hanger beam and upper frame a tie rod is connected, front end of the auxiliary hanger frame is connected with a hanger rod, and said hanger rod is connected with a working platform.

The invention discloses a connection structure of integrally assembled concrete frame and shear wall. The connection structure comprises precast concrete columns, an H-shaped precast concrete composite beam, a precast concrete shear wall body, N-shaped horizontal connecting pieces, two U-bars, bolts, bolt sleeves and post-poured concrete. The U-bars are fixedly arranged on the upper and lower sides of the precast concrete shear wall body, the precast concrete columns, the precast concrete shear wall and the wall body are connected through the N-shaped horizontal connecting pieces, and a plurality of holes are reserved in the H-shaped precast concrete composite beam. After the connection structure is completed, each connecting part is cemented by the post-poured concrete to enable the columns, the wall and the beam to form an integral structure. According to the connection structure of the integrally assembled concrete frame and shear wall, the wall body is easy to lift and assemble, and accurate abutting joint of the upper and lower portions of the wall body can be realized, and quick assembling is facilitated.

The invention discloses a flexible manipulator which comprises at least one pair of flexible fingers, and further comprises a distribution integrated block. A main channel and a plurality of sub-channels are formed in the distribution integrated block; a sub-joint is arranged on each sub-channel, and a main joint is arranged on the main channel; each flexible finger comprises a finger bottom plate and a finger surface, wherein the elastic modulus of the finger bottom plate is larger than the elastic modulus of the finger surface, the finger surface comprises a fingertip section, a knuckle section and a finger root section, a driving chamber is formed by joint surrounding of the knuckle section and the finger bottom plate, a transition groove is formed between the knuckle section and the finger root section, and a ventilation port is formed in the finger bottom plate or the finger root section; the sub-joints are sleeved with the ventilation ports of the flexible fingers in a one-to-one correspondence mode; the exteriors of the finger root sections are buckled with cover shells in a covered mode; and the cover shells are detachably fixed to the distribution integrated block, and one side wall of each cover shell is located in the corresponding transition groove. The flexible fingers of the flexible manipulator are easy to install, convenient to fix, more compact in arrangement and accordingly more suitable for clamping small articles.

A synchronizing device of drawer sliding rails comprises two sets of sliding rail assemblies arranged on a cabinet left side plate and a cabinet right side plate, wherein a drawer is arranged on the sliding rail assemblies and is at least composed of a bottom and a front panel, each sliding rail assembly is at least composed of a movable sliding rail and a fixed sliding rail, a drawer synchronizing device body is arranged on the left movable sliding rail and the right movable sliding rail or the left fixed sliding rail and the right fixed sliding rail and at least comprises a sliding groove base and a sliding block, the sliding block acts on the sliding groove base, racks are arranged on the sliding block, gears mutually meshed with the racks are rotationally arranged on the sliding groove base and correspond to the racks, and the left gear and the right gear are connected through a rotating connecting rod to achieve synchronous opening and closing of the left sliding rail assembly and the right sliding rail assembly; a poking block is arranged on the movable sliding rails or the fixed sliding rails, and a stopping part is arranged on the sliding block and is loaded on the poking block through elasticity of an elastic part at least when a suspending distance A is preserved between the front panel and the cabinet side plates; the sliding block acts on the poking block through the stopping part in at least one segment of travel when the drawer is opened or closed so that the sliding block can slide on the sliding groove base.

The invention discloses an electric power tunnel inspection robot walking structure, a robot and a method thereof. The walking structure comprises two wall plates located on the two sides of a guide rail correspondingly and crossing a guide rail to be connected through a wall plate connecting rod; a set of driving mechanism, a set of braking mechanism, and two sets of guiding mechanism are mounted on each wall plate symmetrically along a guide rail. Every two sets of guiding mechanism are arranged on the two ends of the corresponding wall plate correspondingly. Each set of the guiding mechanism comprises a guide wheel floating device, and a guide wheel piston. One end of each guide wheel floating piston can slide in the corresponding guide wheel floating device. A spring is mounted in each guide wheel floating device. The other end of each guide wheel floating piston is connected with a guide wheel support A which is connected with a wheel shaft of the guide wheel. Each guide wheel floating device is fixed to the corresponding wall plate through a guide wheel support C which is connected with a guide wheel support B. Swinging arms formed by connecting the guide wheel supports B with the guide wheel supports A can limit the guide wheel supports A to drive guide wheels to extend and retract within a certain range.

The invention discloses an anchorage performance detection testing apparatus for carbon fiber adhesion reinforcement. The testing apparatus comprises a testing bench, a concrete test piece, a test fixture and a loading system. The reinforced concrete test bench is composed of a base, a blocking bed, a connecting bed and a stretching bed, carbon fiber sheets are adhered to the test piece, and a steel pressing plate and an anchor bolt are taken as auxiliary anchoring pieces; the test fixture is composed of an external covering steel plate, two inner clamping steel plates and a high-strength split bolt, strip-shaped steel teeth are formed on the surface of the external covering steel plate, pole steel teeth are formed on the surfaces of the inner clamping steel plates, the carbon fiber sheets are placed between the two inner clamping steel plates, the carbon fiber sheets and the two inner clamping steel plates are firmly adhered together by dipping glue, and the high-strength split bolt clamps the external covering steel plate, the inner clamping steel plates and the carbon fiber sheets; and the loading system is composed of a connecting screw rod, a tensile connecting steel plate, a tensile screw rod, a lifting jack and a sensor. The testing apparatus provided by the invention can quickly carry out an anchorage zone stress performance test on a concrete beam reinforced with adhesion of the carbon fiber sheets, and has the advantages of being convenient to make and simple to operate, and the like.

A heterotype steel box and an orthogonal heterology plate bottom mold combined moving mould base and a construction method are provided, the load bearing beam of the moving mould base is the beam of the heterotype steel box, and a top plate and an inner web plate are the outer mould of a concrete box beam; the bottom mold employs orthogonal heterology structure, high toughness and low height, through opening and closing by flat pushing at one side, and line feed is performed in the space between the concrete box beam and a pier shaft. The main beam of the moving mold base is directly supported at the pier top, with the self-locking hydraulic jacket to transmit the load and adjust the height, the transverse moving of the moving mold base is finished at the pier top, and therefore, a steel structure landing leg is not required. The longitudinal moving of the moving mold employs a steel strand and a continuous hydraulic jacket for pushing and pulling, power for the longitudinal moving is located at the front pier top, and removes the difficulty of the application of a bridge fabrication machine for a railway and a road bridge, is the construction equipment for the concrete box beam of the railway passenger line and used in the road bridge.

The invention discloses a multi-connecting rod loading mechanism, which comprises a first driving rod, a first connecting rod, a swinging arm, a pull rod, a movable arm, a movable arm elevating mechanism and a scraper bucket, wherein one end of the movable arm is connected with a frame, and the other end of the movable arm is connected with the scraper bucket and is elevated and lowered under theaction of the movable arm elevating mechanism; one end of the first driving rod is connected with the frame, and the other end of the first driving rod is connected with the first connecting rod; thefirst connecting rod is connected with the swinging arm; one end of the swinging arm is connected to the movable arm, and the other end of the swinging arm is connected with the pull rod; the other end of the pull rod is connected with the scraper bucket; and the first driving rod is used for controlling the scraper bucket to rotate around the movable arm under the driving action of a motor. In the invention, a hydraulic transmission system is replaced by the multi-connecting-rod loading mechanism, so that the defects of high maintenance cost and the like of a hydraulic excavator are overcome; and simultaneously, the first connecting rod, the swinging arm and the pull rod are connected with one another, so that the strange phenomenon and an oversize or undersize transmission angle among the first connecting rod, the swinging arm and the pull rod due to the approach or reach of the scraper bucket of a mechanical loader to a limit position can be avoided easily on the premise of meetingthe requirement of loading, and the reliability of an electric loader is improved.

The invention discloses a bogie framework for a high-speed rail wagon. The framework has a concave H-shaped structure and is provided with a large cross beam, two side beams, two small cross beams and mounting seats in various models. By the framework, the requirements of a double-stage rubber spring bearing and a single longitudinal traction pull rod can be met; and the design of the side beams can meet the requirement of positioning of a rocker arm type shaft box for a bogie of a high-speed wagon. By the bogie framework, the requirement that the shaft weight is 16.5t when the speed of the wagon is 200km / h and the requirement that the shaft weight is 18t when the speed of the wagon is 160km / h are met; and the bogie framework has the remarkable characteristics of simple structure, high popularity and reliable performance.

The invention discloses a method for producing an immediate complete or half denture based on a 3D printing technique. The method comprises the steps of preparing an impression with a remaining tooth jaw or a tooth-free jaw, transferring a jaw position relation, acquiring digital models of the remaining tooth jaw or the tooth-free jaw and the jaw position relation, setting the arrangement and the denture border of artificial teeth of the immediate complete or half denture corresponding to the form of the remaining tooth jaw or the tooth-free jaw and the jaw position relation, invoking data in a preset database, designing the artificial teeth and polishing surfaces of the artificial teeth, regulating the occlusion of the teeth to enable alveolar ridge supporting tissues to bear proper pressure distribution, and manufacturing a three-dimensional model of the immediate complete or half denture by virtue of a photo-healing three-dimensional printing technique in the 3D printing technique. The method has the advantages that the production steps are simple, the production time is short, the precision is high, the denture can be conformably worn by a patient, and meanwhile, the production cost is lowered.

The invention discloses a three-dimensional vibration insulation and reduction device and method. According to the three-dimensional vibration insulation and reduction device, horizontal vibration is insulated through a rubber support on the lower portion, and vertical vibration of vertical rail transit is insulated through a vertical vibration insulation device on the upper portion. The horizontal rigidity of the rubber support is small, under the action of an earthquake, transfer of the earthquake action to an upper building structure is reduced, and thus, horizontal vibration is insulated. The vertical vibration insulation device adopts disc spring sets, the vertical rigidity is small, and under the action of ground vertical vibration waves caused by metro operation, transfer of vertical vibration to the upper building structure is stopped. Meanwhile, through the deformation and reset processes of the disc spring sets, vertical vibration applied to the structure is reduced, a part of vibration energy is consumed through friction resistance, thus, the structure is stressed more reasonably, the structure safety is guaranteed, and accordingly vertical vibration of vertical rail transit is insulated. The three-dimensional vibration insulation and reduction device has the characteristics of being simple in structure, stable in vibration insulation and reduction performance, reliable and durable.

The invention discloses a mitral chordae sewing machine for implanting the artificial chordae through the minimally invasive technology and a method of the mitral chordae sewing machine in the field of medical apparatus and instruments. The mitral chordae sewing machine comprises a mitral forceps holder, sewing needles and a position detection device, wherein the mitral forceps holder is capable of clamping a mitral leaflet; the mitral forceps holder comprises an operating handle, a support rod and a clamping device of which the front end is opened and closed under the control of the operating handle; the number of the sewing needles is two; each sewing needle is designed to be of a barb structure, and the barb structures are used for hooking the artificial chordae; the position detection device is used for detecting the position, clamped by the mitral forceps holder, of the mitral leaflet; the mitral leaflet can be implanted into a human body through the small incision of left chest, and enters the ventriculus sinister from the apex cordis position to clamp the mitral leaflet; the sewing needles penetrate through the mitral leaflet to hook the artificial chordae, so that a liner is adhered to the mitral leaflet at one side of the atrium sinistrum, and two ends of the artificial chordae are fixed to the apex cordis position. According to the mitral chordae sewing machine and the method of the mitral chordae sewing machine disclosed by the invention, the goal that the artificial chordae is implanted through the minimally invasive technology is achieved, and patients with mitral regurgitation caused by the rupture of the mitral chordae are effectively treated.

The invention relates to a rapid repairing method for a sunken ballastless track through grouting lifting. According to the method, grouting materials, device tools and a construction technology are needed, and the method specifically comprises the steps that after lifting quantity of the ballastless track is determined, a high-pressure grouting device is adopted, and under certain grouting pressure, rapid-hardening grouting materials are grouted under a ballastless track base which is horizontally arranged in advance and in grouting bags in a graded broken stone surface layer through a grouting pipe in a certain sequence; in the grouting process, an electronic level precise measurement device is adopted to monitor elevation changes of the upper portion of the track in real time, when the elevation is close to or reaches the designed elevation, grouting lifting is stopped, then rapid-hardening grouting materials with high fluidity are directly grouted in the gap between the lifted base and the graded broken stone layer, the grouting materials rapidly and fully fill the gap and are solidified, the lifted base and the graded broken stone layer are integrally bonded, and the ballastless track is precisely lifted and firmly located.