256 results about "Double row" patented technology

The invention relates to the field of seamless steel tube processing, and discloses a seamless steel tube production process and a seamless steel tube production line, a size changing process is added between a traditional heating process and a traditional punching process, and a square blank or a large-diameter circular blank (a first blank) is changed into a small-diameter circular blank (a second blank). The size changing procedure can be achieved through independent or combined rolling, push rolling and skew rolling processes, for example, push rolling is adopted for changing square billets into round billets, and a two-roller or three-roller skew rolling round billet machine is adopted for reducing the diameter. The first blanks in the heating furnace are arranged in double rows, meanwhile, the product outline is adjusted according to the capacity of a unit, and the front portion, the rear portion and the middle portion are subjected to optimized production, wherein double-row material distribution is achieved, the finished products are as long as 12 m, and cutting head loss is reduced. The matched production line is provided with size changing equipment (such as a section mill, a push mill and a skew mill combination) between a heating furnace and a perforating machine, square billets or round billets can be flexibly processed, the material distribution efficiency, the finished product length and the cost are balanced through the size changing technology, and the economical efficiency and flexibility of seamless steel pipe production are improved.

The invention discloses a construction technology of a squat silo top formwork system, and belongs to the technical field of silo construction, and the construction technology comprises construction of a conical shell top plate supporting system, and comprises the following steps: reserved hole construction: when a silo wall slip form is constructed to an elevation, a plurality of reserved holes are uniformly distributed in a silo wall along the circumferential direction; mounting a central upright post, hoisting the central upright post to a foundation at the central position of the warehouse, arranging four cable ropes for temporary fixation, then erecting double-row scaffolds around the upright post, and carrying out column embracing connection by using steel pipe fasteners and a central steel pipe every 1.5 meters; a top conversion platform is installed, the assembled conversion platform is lifted to the top of the center stand column through a tower crane, and the conversion platform is in bolt connection with the center stand column through a round pipe; bailey frames are installed, the two sides of one end of each Bailey piece are welded to the conversion platform through channel steel to limit sliding of the Bailey beams, the other end of each Bailey piece is placed at the reserved hole of the bin wall, and the Bailey beams are placed in the central symmetry direction in sequence. The stability of the supporting system is improved.

The utility model relates to the technical field of agricultural machinery, in particular to a feeding mechanism of a carrot harvester, which is characterized in that the feeding mechanism is positioned at the front part of the harvester, and driven clamping belt wheels and leading-in wheels are mounted in a left-right staggered manner to form a splayed feeding port; the driven clamping belt wheel can swing back and forth, and it is guaranteed that radish leaves are evenly fed with the same clamping force. All the components are installed on the inlet shell. The inlet shell is connected with the telescopic body through the safety bolt, and the telescopic body is installed in the main beam of the machine frame and can move front and back to adjust the tightness degree of the clamping belt. The harvester moves forwards, the splayed inlet gathers two rows of carrot tassels to the middle, the carrot tassels enter the clamping opening, and the rotating clamping belt clamps the carrot tassels and conveys the carrot tassels backwards. If the front end of the feeding mechanism suddenly touches the ground, large impact force is generated, and the safety bolt is automatically broken to protect the whole machine from being damaged. The splayed feeding mechanism solves the problem of accurate feeding during harvesting of carrots planted in large ridges and double rows.

The utility model relates to the technical field of corn seeding, and in particular to a flat socket cavity seeding wheel, comprising a wheel body, a round head double flat hole, a flat socket cavity, and a seeding piece guide groove, wherein the wheel body is cylindrical, the round head double flat hole is arranged at the center of the wheel body, the flat socket cavity is arranged on the outer circumferential surface of the wheel body, and is distributed in double rows in parallel, and the seeding piece guide groove is arranged on the outer circumferential surface of the wheel body. The utility model designs the flat socket cavity by using the corn seed profiling principle, during sowing operation, the seeding wheel rotates clockwise, and the flat socket cavity also rotates accordingly, and the corn seeds enter the flat socket cavity in a flat state, and although the flat socket cavity expands the seed filling window, each flat socket cavity can only accommodate a single corn seed, which is conducive to seed filling but not easy to cause reseeding.

The pipeline cutter comprises a double-row support, an inclined plate is installed on the bottom wall of the lower row of the double-row support, and electric telescopic rods are installed in inner cavities of vertical parts on the left side and the right side of the front portion between the two rows of the double-row support. First vertical plates are installed at the upper ends of the two electric telescopic rods correspondingly, the second vertical plate is rotationally connected with a first motor, the first motor is fixed to the middle of the second vertical plate, the two-way threaded rod and the first guide rod are jointly provided with two cutting devices, and a centering adjusting device is arranged in the middle of the second vertical plate. According to the pipeline cutter for thermal power plant boiler overhaul, the two cutting devices are adopted for cutting a boiler pipeline, the whole boiler pipeline in use does not need to be dismantled, only the device needs to be moved to the position below the boiler pipeline needing to be cut, the outer side of the boiler pipeline needing to be cut is sleeved with the cutting devices, and then the boiler pipeline is cut. And the pipeline can be cut through the cutting device, and time and labor are saved.

The embodiment of the invention provides a hub bearing and a machining process thereof, and relates to the technical field of hub bearings. The hub bearing comprises an outer ring, a fixing ring, an inner ring and a flange, the outer ring is mounted on the circumferential outer wall of the inner ring, double rows of raceways are arranged in the outer ring, balls are mounted in the raceways through retainers, one end of the outer ring is connected with the fixing ring, one end of the inner ring is connected with the flange, and a gap between the outer ring and one end of the inner ring is sealed through a sealing ring. A gap between the other ends of the outer ring and the inner ring is sealed through a sealing adjusting mechanism which is installed on the inner ring. Dynamic self-adaptive sealing adjustment is achieved through a mechanical linkage structure of the floating ring, the lever arm and the sealing push ring, slope positioning matching and guide limiting design are combined, it is ensured that sealing pressure is automatically matched along with working conditions and evenly attached to a sealing groove, meanwhile, abrasion resistance and operation stability are improved, the sealing life is remarkably prolonged, and the overall reliability is remarkably improved.

The slope protection construction operation platform comprises an inner row of inclined rods and an outer row of inclined rods which are parallel to a slope, the inner row of inclined rods and the outer row of inclined rods are fixedly connected through a plurality of parallel longitudinal horizontal rods to form a latticed frame, and a plurality of transverse horizontal rods are fixedly connected between the inner latticed frame and the outer latticed frame to form a three-dimensional space frame. The two side faces and the two end faces of the three-dimensional space frame are connected through cross bridging arranged in a crossed mode. The inner side face of the three-dimensional space frame is provided with pulling joints connected with anchor rods driven into the side slope. The invention further discloses a construction method of the operation platform. The operation platform is stable in structure, high in adjustability and convenient to install and has a safety protection function. The platform can adapt to different slope ratios, heights and geological conditions, and integrates an operation platform, safety protection and equipment bearing.

The utility model discloses a stage lighting truss which comprises a plurality of double-row frame bodies, a plurality of first transfer frame bodies and a plurality of connecting assemblies. The double-row frame body and the first transfer frame body are connected through a connecting assembly to form a top frame; the first transfer frame body is arranged at the vertex angle of the top frame; a plurality of double-row frame bodies are connected between every two first transfer frame bodies; the multiple double-row frame bodies are connected and spliced into a stand column through the connecting assemblies. The stand columns are arranged at the top corners of the top frame and connected with the first transfer frame body through connecting assemblies. According to the stage lighting truss disclosed by the utility model, each double-row frame body and the first transfer frame body can be conveniently and quickly assembled in a stacked manner through the connecting assemblies, so that the stage lighting truss can be assembled according to the stage requirements, and the whole top truss is firmer while the assembly is convenient.

1. The name of the design product: toggle switch (MA25E09 double row 5-stage side toggle patch). 2. The use of the design product: used for connecting or disconnecting the circuit by toggling the switch handle. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The application provides a double-row lead frame resistance. The double-row lead frame resistance comprises a lead frame, a resistance, and the two ends of the first coil and the second coil are respectively installed with the lead wires; a protective cover; a cooling mechanism, the inside of the protective cover is fixedly connected with the supporting rod, the bottom end of the supporting rod is installed with the air bag; the top end of the supporting rod is internally installed with the fixed block and the fixed frame, the inside of the fixed block is slidably connected with the piston, the inside of the piston and the fixed block is respectively installed with the magnetic ring, the magnetic rings are attracted to each other; the inside of the fixed frame is slidably connected with the sliding rod, the sliding rod is fixedly connected with the piston, the side wall of the sliding rod is sleeved with the spring, and the two ends of the spring are respectively connected with the fixed frame and the piston; a cooling mechanism; a connecting mechanism. The double-row lead frame resistance provided by the application has the advantages of eliminating the self-induction of the coil, reducing the eddy current, and facilitating the dissipation of the heat inside the coil.

The invention relates to the technical field of double-row roller bearings, and discloses a double-row roller bearing provided with an anti-unbalance-loading mechanism, the double-row roller bearing provided with the anti-unbalance-loading mechanism comprises a protective shell, a plurality of sliding rods are slidably connected in the protective shell, a fixed plate is arranged on the sliding rods, two rotating plates are arranged at the two ends of the fixed plate respectively, and the rotating plates are arranged on the protective shell. Connecting plates are rotationally connected to the rotating plate, elastic pieces are arranged on every two connecting plates, limiting plates are rotationally connected to the connecting plates, arc-shaped plates are rotationally connected to the exteriors of every two limiting plates, a plurality of balls are rotationally connected to the interiors of the arc-shaped plates, and stabilizing mechanisms are arranged on the limiting plates. According to the device, the sliding rod, the arc-shaped plate and the ball are matched to drive the connecting shaft to be supported without hindering the motion trail of the connecting shaft, and when the connecting shaft is uneven in stress, the sliding rod is driven to retract to achieve visual warning of uneven stress; a stabilizing mechanism composed of a long plate, a spring and a telescopic rod drives the supporting stability of the arc-shaped plate and the balls to be enhanced.

1. The name of the design product: double row charging head. 2. The use of the design product: for charging portable energy storage devices. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention provides an out-hole through construction method for a weathered silty mudstone tunnel at a broken shallow-buried section, which comprises the following steps of: grouting and reinforcing into a whole by adopting an earth surface steel floral tube at the earth surface position of a tunnel vault of weak surrounding rock according to field topography and geology; at the small pile number inlet section, n rows of steel pipes internally provided with reinforcing reinforcement cages are adopted as advanced pipe sheds to penetrate through the upper portion of the tunnel face of the large pile number outlet section, double-layer advanced small guide pipes are combined to serve as advanced supports, and system anchor rods and double rows of feet-lock anchor rods are adopted in a tunnel body to reinforce a profile steel arch frame, so that the overall stability of the supports is improved; during penetration, the support is closed into a ring in time by utilizing three-step footage construction, so that the overall stress of the support is improved, and the technical problems of large tunnel settlement, even possible roof fall and large safety risk during penetration construction of the weathered silty mudstone tunnel at the shallowly buried broken section are solved; and compared with the mode that manual excavation is combined with mechanical excavation is generally adopted in the shallowly-buried section of the tunnel in the prior art, the construction efficiency of tunnel penetration is improved.

A reciprocating swing type nail feeding mechanism for fastener conveying equipment comprises a double-row swing rod and a nail grabbing member, wherein the double-row swing rod is composed of a first swing rod and a second swing rod which are arranged in parallel at a certain distance. Two nail grabbing members are installed at each end of the double-row swing rod, and the nail grabbing members on the same side are elastically closed and distributed in a "V" shape through an elastic component. Through the swing of the double-row swing rod, the nail grabbing heads on the nail grabbing members on both sides can grab fasteners from the far end in turn and swing and convey them to the welding electrode, so as to stably and continuously convey fasteners for the welding equipment.

According to the motor conveying assembly, two parallel supporting seats are arranged in a rack of a roller conveying line, a plurality of rotating rollers are arranged between the corresponding supporting seats and the corresponding inner side wall of the rack, the axes of the rollers are perpendicular to the length direction of the rack, and a long-strip-shaped gap in the length direction of the rack is formed between the two supporting seats. A gap is formed between the formed double rows of rollers for placing the rotating shaft rotating through the base; in this way, the motor can be vertically placed on the base, and a rotating shaft of the motor cannot interfere with the roller conveying line; the motor can be directly hoisted to the base for installation of some accessories such as a hanging ring and a nameplate and then transportation is carried out, and the step of installation on an operation table is omitted.

Double-row roller bearing (1), comprising an outer ring (2) and two inner rings (3, 4), and rolling elements (7) rolling between the outer ring (2) and the inner rings (3, 4), wherein the outer ring (2) provides rolling element raceways (8, 9) for both rows of rolling elements (5, 6) and each inner ring (3, 4) provides a rolling element raceway (10, 11), and wherein the outer ring (2) forms a central flange (12) between the rows of rolling elements (5, 6) and each inner ring (3, 4) forms a flange (14, 15) at a bearing end face, and wherein the roller bearing has a thrust surface (20) positioned on the outer circumferential surface of the inner rings (3, 4) between their rolling element raceways (10, 11) and holding the inner rings (3, 4) together by means of a snap connection. a center flange retaining clip (16) providing for the rolling elements (7) of both rows of rolling elements (5, 6), characterized in that the center flange retaining clip (16) extends into the inner rings (3,4) by means of snap lugs (17) offset alternately around the circumference into a groove-like recess of the inner rings (3, 4) and thus holds the inner rings (3, 4) together and has a lubrication groove (13) on the axial opposite side of a snap lug (17).

The utility model relates to the technical field of circuit welding equipment, in particular to a double-row integrated circuit welding device which comprises a supporting frame, a multidirectional moving arm is arranged on one side of the top of the supporting frame, a mounting plate is arranged on the multidirectional moving arm, a communicating pipe is arranged on the mounting plate, and a welding head is arranged at one end of the communicating pipe. A lifting table is arranged on the other side of the top of the supporting frame, a fixing disc is arranged on the top of the lifting table, the lifting table is of a telescopic structure, and an adjusting assembly is arranged on the lifting table; and the adjusting assembly is used for adjusting the position when the double-row integrated circuit is welded. Compared with the prior art, the alignment precision before welding is guaranteed, the welding quality is improved, the defective product rate is reduced, and meanwhile the automation level and adaptability of the device are improved.

The invention discloses an electric corn precision seeder for hilly and mountainous areas and a control method thereof. A seeding lifting mechanism of a seeding system is connected with a frame, and a seeder fixing frame is connected with a seeder lifter through a seeder flexible connecting mechanism; a soil covering wheel of the seeding system is synchronously arranged below the middle part of the machine body along with the seeder; the lifting action of the seeding system is driven by an electric push rod, and the electric push rod is controlled by an MCU (Microprogrammed Control Unit) of the electrical system; the rotating speed and steering angle of a hub motor of the power system are adjusted by an electrical control panel of the electrical system according to an operation instruction to ensure that the movement and seeding actions of the seeder are coordinated; the seeding system adopts a modular design, single and double rows can be quickly switched, and the row spacing can be adjusted through fixing holes of a seeder connecting frame in a double-row mode; a parallelogram lifting and flexible connecting mechanism of the seeder ensures the robustness and the operation stability of the whole machine; the corn seeder improves seeding precision and efficiency, reduces labor intensity and is suitable for corn seeding in hilly and mountainous areas.

The invention discloses an arc-shaped spray pipe provided with double rows of nozzles, and relates to the technical field of spray pipes, and the arc-shaped spray pipe provided with double rows of nozzles is characterized by comprising a water supply device for rotationally atomizing water flow to form scattering, and two steering devices arranged on the water supply device, the steering devices are used for adjusting the spraying direction, the adjusting devices are arranged on the two steering devices correspondingly, the adjusting devices are used for increasing the water flow form and achieving diversification, and the water supply device is arranged and rotated, so that water flow is not concentrated into a single water column any more, is scattered in an umbrella shape and covers a wider area; the spraying range is effectively widened, spraying work in different states can be achieved through the arrangement of the steering device, the using effect of the device is improved, the overall functionality of the device is improved, the state of water flow is changed through the arrangement of the adjusting device, the device can adapt to different working conditions, and therefore the using effect is improved.

The invention relates to the technical field of fruit tree grillage cultivation methods, and provides a fruit tree grillage cultivation method which is convenient for mechanical operation, simple in management and suitable for the technical requirements of modern close planting and labor-saving cultivation. The method comprises the steps that S100, a double-row V-shaped grillwork is erected; s200, a steel wire mesh surface is arranged on the V-shaped grillwork; s300, planting double rows of nursery stocks, and horizontally binding first-level lateral branches of each nursery stock to a steel wire mesh surface to enable each row of nursery stocks to form a fruiting wall; s400, shaping is conducted in the first year; s500, shaping is conducted in the second year; s600, shaping is conducted in the third year; s700, shaping is conducted in the fourth year; and S800, completing grillwork cultivation in the fifth year.

1. Name of the product in this design: Inner ring assembly of a double-row tapered roller bearing. 2. Application of this design: for use in the inner ring of a double-row tapered roller bearing. 3. The key design feature of this product is its shape. 4. Images or photos that best illustrate the design points: Refer to Figure 1 for the combined state. 5. Other situations requiring explanation: Component description: Component 1 and Component 2 are coaxial symmetrical bodies, and Component 3 is installed in the mounting slots provided by Component 1 and Component 2.

1. The name of the design product: elevator profile (double row long waist round hole fast-assembly square tube column). 2. The use of the design product: for square tube column profile for elevator. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model discloses a kind of based on semi-steel fiber grid's drill, drill device includes single row buckle, fiber grid, board, steel drill and mould car in one embodiment, including double row buckle, fiber grid, board, steel drill and mould car in another embodiment, wherein, single row buckle and double row buckle all include steel drill fixed part, outer expansion baffle, support part and grid fixed part, according to different site installation requirement selects single row buckle or double row buckle to semi-steel fiber grid is installed and fixed to improve site installation efficiency, fiber grid can play the anti-bending performance requirement of replacing plate body reinforcement after semi-steel processing, and also have the advantages such as light weight high strength, heat preservation and heat insulation. In conclusion, the drill of the semi-steel fiber grid based on can be semi-steel by fiber grid processing, and special fastener is used to fix fiber grid to improve site installation efficiency.

The utility model discloses a sliding door lower sliding device which comprises a double-rail slide way and a double-row pulley assembly matched with the double-rail slide way, and the double-row pulley assembly comprises a pulley supporting frame and double rows of pulleys installed on the pulley supporting frame. The lower sliding device of the sliding door further comprises a sliding way hanging steel channel used for hanging the double-rail sliding way on the ground and a pulley hanging steel channel used for hanging the double-row pulleys at the bottom of the sliding door, and the opening directions of the sliding way hanging steel channel and the pulley hanging steel channel are opposite and are arranged in parallel in an inserted and buckled mode. An upper leg of the slideway suspension channel steel is located between an upper leg and a lower leg of the pulley suspension channel steel, the double-track slideway is fixed on the lower surface of the upper leg of the slideway suspension channel steel, and the pulley support frame is fixed on the upper surface of the lower leg of the pulley suspension channel steel. The lower sliding device of the sliding door is good in sealing effect, sundries are not prone to entering in the using process, and the lower sliding device has the advantages of being rain-proof, wind-proof, sand-proof and the like.

The utility model relates to a diamond drill bit with double rows of teeth, which belongs to the technical field of drill bits and comprises a drill bit mounting seat, a plurality of groups of cutting components are mounted outside the drill bit mounting seat, and each cutting component comprises two mounting plates and a slider mounted on one side of the two mounting plates. The mounting plates are of an L-shaped structure and are attached to the side edge and the top of the drill bit mounting base, sliding grooves matched with the two sliding blocks for use are formed in the outer portion of the drill bit mounting base, the sliding grooves are of a trapezoidal structure, and a limiting block which is the same as the sliding grooves in shape is formed between the two sliding blocks; when the drill bit is locally damaged in the using process, the whole drill bit does not need to be abandoned, only damaged parts need to be replaced, waste of resources is reduced, and the drill bit is more convenient for people to use.

The utility model relates to the technical field of chamfering tool, disclose double row chip chamfering tool, including handle, handle one end is provided with the body and the head, the head outer wall is provided with two row chip grooves of axis symmetry, the other end fixedly connected with flat joint of handle, the inside of flat joint is provided with connecting assembly, the inside of head is provided with protection assembly, connecting assembly includes hole slot and clamping block, the fixed ring is fixedly connected with the inner wall of screw cap, the inside of fixed ring is provided with the penetration of arc -shaped groove, the inside of screw cap is provided with connecting pipe, the inside of connecting pipe is provided with sliding slot, the outer wall of clamping block is connected in the inner wall of sliding slot with sliding. In the utility model, through rotating screw cap can drive inside clamping block along sliding slot and slide, make it and external equipment interface quick clamping or separate, easy operation, torsional spring provides stable reset force, ensure that self -locking is reliable in the process of connecting, avoid the loosening and falling off when processing, improve the clamping efficiency and security.

The utility model discloses a maintenance-free double-row deep groove ball bearing which comprises a shaft sealing ring, a waterproof sealing ring, a wear-resistant sheet, a bearing wheel body, a bearing wheel hollow shaft, a bearing outer ring, a bearing inner ring, a first groove and a second groove, the bearing wheel hollow shaft is sleeved with a bearing wheel body, a maintenance-free double-row deep groove bearing is installed in the bearing wheel body, and the maintenance-free double-row deep groove bearing is fixedly connected to the bearing wheel hollow shaft. According to the maintenance-free double-row deep groove ball bearing, structural design is designed, dynamic and static dual protection is achieved through the collaborative design of the multiple layers of sealing pieces and the double rows of balls, the gap between the inner ring and the outer ring can be covered through the linkage design of the bearing pressing pieces and the multiple layers of sealing pieces, load distribution is optimized through the double rows of symmetrically-distributed balls, and the service life of the ball bearing is prolonged. The radial bearing capacity and the axial bearing capacity are remarkably improved, local stress concentration caused by deviation of a single-row bearing is avoided, and the bearing capacity and stability of the bearing are remarkably improved through symmetrical layout and geometric optimization of the double-row balls.

1. Name of the designed product: double row grinding plate. 2. Use of the designed product: the designed product is used for processing stone slabs. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

1. The name of the design product: double row tapered roller bearing inner ring assembly (screw type). 2. The use of the design product: for double row tapered roller bearing inner ring. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: combined state reference Figure 1. 5. Other components that need to be explained: component 1 is an inner ring with external threads, component 2 is an inner ring with internal threads, and component 1 and component 2 are assembled into a double row tapered roller bearing inner ring by screwing.