59results about How to "Improve centering" patented technology

The shaft is connected to the shaft attachment by a thread. A bore with an internal thread is incorporated in the shaft attachment and the shaft has a corresponding stem which can be introduced into the threaded bore and has an external thread. An axial stop is arranged on the shaft and on the shaft attachment. The internal and external threads have torque-transmitting flanks which are flat toward the axis and which can be connected to one another frictionally by radial pressure by mutual rotation of shaft and shaft attachment with interaction between the axial stops. Owing to the small angle between the load-bearing flanks and the axis, the radial pressure decisive for the torque transmission is correspondingly greater than in conventional threaded connections. As a result, the axial prestressing force between the two parts to be connected can be correspondingly reduced.

The invention provides an integral casing centralizer and a manufacturing method thereof, belonging to the field of oil and gas well cementing. The integral casing centralizer is processed by uniform wall thickness material pipe or plate, including hoops at both ends, and limbs located between the hoops at both ends; the limbs are evenly distributed on the circumference, and each The two ends of each limb are respectively connected with the hoops at both ends; each limb is arched outward; the outer diameter of the centralizer formed by all the limbs is smaller than or equal to the inner diameter of the upper casing.

The invention relates to an insertion combination type recyclable expanding body anchor rod of a high-bearing inner cabin and a construction method and belongs to the technical field of civil engineering. An unbonded steel strand is rewound through a smooth arc-shaped top bearing anchor end to form a double number of steel strands, and after forming through a specially-made steel strand locking device, the steel strands, a locking body and a binding lacing strip are commonly locked to form an insertion locking assembly, and the assembly is connected with a cabin type assembly composed of a bottom fixed pedestal and the like and is fastened through a locking screw and a nut. After the insertion combination type recyclable expanding body anchor rod of the high-bearing inner cabin is sent into a stratum, the high-pressure grouting cabin is unfolded in an expanded mode, a large-diameter high-strength anchor body is formed, and after a supporting function with high anchoring safety is finished, the unbonded steel strand can be recycled efficiently and rapidly and is simple to construct and simple in structure.

The invention relates to a pore throat recognition method with consideration of a pore throat tail end and in particular to a method for recognizing pores and throats in microscopic visualization model oil displacement experiment images in the field of oilfield development. The method comprises the following steps: carrying out binaryzation treatment on images; carrying out length transformation on space of pores and throats; extracting a center line by using a turning point algorithm; cancelling inner paths in the pores to obtain path curves of the rest of paths; carrying out wavelet noise reduction on the path curves; finding bottleneck positions of the pores and the throats and carrying out pore throat recognition without consideration of the tail end; extracting a center line by using a combustion algorithm and finding the pore throat tail end; extracting a center line of the tail end by using the turning point algorithm by means of an endpoint of a combustion center line of the tail end; and combining the center line of the turning point algorithm and carrying out the pore throat recognition method with consideration of the pore throat tail end. With combination of the combustion algorithm and the turning point algorithm, the tail end part can be independently recognized; the extracted center line is good in centering effect; the relative errors of recognition of the pore throat length are reduced.

The invention relates to a chip resistor detecting sorting machine. The chip resistor detecting sorting machine comprises a machine frame and a power distribution control cabinet, wherein a feeding conveying device, an upper part detecting seat and a lower part detecting seat are sequentially arranged on the machine frame from right to left; the feeding conveying device and the upper part detecting seat are matched through an upper part detecting and taking device; the upper part detecting seat and the lower part detecting seat are matched through a lower part detecting and taking device; an upper part detecting device which is matched with products is arranged on the upper part detecting seat, wherein a CCD detecting head is used as a detecting component of the upper part detecting device; a lower part detecting device matched with the lower parts of the products is arranged on the lower part detecting seat; the lower part detecting device comprises a detecting and discharging seat arranged on the lower part detecting seat; an LCR detecting probe penetrating through the lower part of the detecting and discharging seat is arranged at the lower part of the detecting and discharging seat; and a first unqualified product collecting box is arranged at the lower part detecting seat. According to the chip resistor detecting sorting machine disclosed by the invention, automatic and integral detection for two sides of chip resistors is realized, so that the detecting accuracy is guaranteed, and the quality of subsequent finished products is guaranteed; and besides, the detecting efficiency is improved.

The invention discloses a while-drilling sound wave well cementation quality evaluation method and a processing device. The while-drilling sound wave well cementation quality evaluation method comprises the steps that 1, while-drilling data are pre-processed, and full-wave train data of array sound waves are obtained; 2, the influence of drill collar waves in the head waves is eliminated; 3, the energy of a head wave is calculated, and the wave energy of a sleeve in a window is calculated according to the length of the window; 4, a head wave array attenuation factor is calculated, and a corresponding array attenuation factor is calculated according to the obtained head wave energy; 5, a cementation index is calculated, and the cementation index is calculated by using a cementation index calculation formula according to a fitting formula of the attenuation factor of the block and the CBL; 6, the well cementation quality is comprehensively evaluated by using a cementation index curve; and 7, whether all the depth points are processed or not is judged, if so, processing is ended, and if not, the steps are repeated until all the depth points are processed. According to the while-drilling sound wave well cementation quality evaluation method, the problems of long time consumption and high cost during well cementation quality evaluation of highly-deviated wells and horizontal wells in cable logging can be solved.

The invention discloses a plasma cutting device and method for an underground oil casing. The plasma cutting device comprises an electrode, an electrode feeding mechanism and a guide shoe, the electrode is fixed to the electrode feeding mechanism, the electrode is arranged outwards in the radial direction, the guide shoe is connected to the axial lower end of the electrode feeding mechanism, and the electrode and the electrode feeding mechanism are both connected with a cable; the upper end of the electrode feeding mechanism is connected with a rotating mechanism; the upper end of the rotatingmechanism is connected with an upper centering mechanism; and a lower centering mechanism is further connected between the guide shoe and the electrode feeding mechanism. Strings are cut, the cuttingefficiency is high, and the success rate is high.

A flexible pivot includes a first stage including a first cylinder and interface structure and a second stage including a second cylinder and interface structure in axial alignment with those of the first stage. Flexible connecting members are arranged for connecting the first and the second stages. Each flexible connecting member includes a pair of legs and a cross member joining the legs, each leg extending in a direction transverse to the axis of the cylinders, the legs being attached to the first and the second cylinders respectively. The first cylinder and the first interface structure are concentric. Flexible spokes are attached to the first cylinder by one end and to the first interface structure by the other. Each spoke extends in a direction transverse to the axis of the cylinders. Finally, the second stage includes flexible connection unit arranged to connect the second cylinder to the second interface structure.

The invention discloses forming equipment of a paper-parcel-free coaxial core filter stick. The forming equipment is provided with two filament tow conveying mechanisms arranged in parallel, a combined opening mechanism, an inner-layer paper-parcel-free filter stick solidifying and shaping mechanism, an outer-layer paper-parcel-free filter stick solidifying and shaping and composite forming mechanism and a guiding-out mechanism. The inner-layer paper-parcel-free filter stick solidifying and shaping mechanism heats inner-layer filament tows by steam, and paper-parcel-free inner core filter sticks are made at first; and then an outer layer is shaped by heating through steam. According to the forming equipment, the inner layer and the outer layer are sequentially formed, the two layers are spaced clearly, a forming production line is short, and the manufacturing efficiency is high.

The invention relates to the technical field of cable installation, in particular to an electric traction device with a positioning function. The technical problems that when cable traction needs to be carried out on a plurality of protection pipes, an operator needs to install a plurality of guide wheels, the operation process is tedious, a cable is bent in a right-angle mode when a cable traction machine is placed under a cable well, so that the cable is prone to being damaged, and the traction machine placed at the bottom of the cable well is inconvenient to fix and carry out center positioning are solved. An electric traction device with a positioning function comprises a directional locking mechanism. A fixing mechanism is arranged on the directional locking mechanism, a traction mechanism is arranged on the upper portion of the fixing mechanism, and an angle adjusting mechanism is arranged on the traction mechanism. Through cooperation of the directional locking mechanism and the fixing mechanism, the directional locking mechanism is fixed and centered, cable angle adjustment is completed through the angle adjusting mechanism, the situation that the cable at the position of the positioning sleeve is extruded and deformed is avoided, installation of a guide wheel is reduced, and the working intensity of operators is relieved.

A circular-shank tool including a tool holder for improving the centering of the shank of the circular-shank tool in the locking sleeve by a configuration of the retaining elements and to improve an ability of the shank to rotate in the sleeve. To achieve this, the retaining elements are distributed between two stamped edges that lie transversely with respect to a longitudinal axis of the locking sleeve and are stamped inwards or indented, the stamped edges extend over part of the circumference of the locking sleeve and are interspaced at a distance that corresponds to the width of the peripheral groove in the shank of the circular-shank tool and the retaining elements form a coaxial concave centering section facing the convex groove base of the peripheral groove.

The invention relates to the technical field of steel wire rope detection, and discloses a detection method and an internal structure of a detector. The lining replaceable type steel wire rope detector is characterized in that a lining slightly larger than the diameter of a steel wire rope is arranged, so that the instrument achieves good centering performance; a plurality of matched inner liningsand outer linings are provided for detecting steel wire ropes with different rope diameters, so that the universality of the instrument is improved; a concave platform is arranged at the outer lining, and an installation space for a flexible flat cable board is reserved in cooperation with the inner lining, so that the defect that a steel wire rope in a roller type steel wire rope detector is faraway from a detection element can be overcome, and high detection precision is achieved; and the installation space for the of the flexible flat cable board is reserved in cooperation, so that installation is convenient, and all-phase arrangement of detection elements can be achieved. According to the invention, the radial vector of the magnetic flux leakage signal of the steel wire rope is detected, the value of the radial vector of the signal is zero when the steel wire rope is not damaged, and the radial vector of the magnetic flux leakage signal exists only when the damage exists, so thatthe problem that the axial vector collected in the past exceeds the measuring range of a detection element is solved.

The invention discloses a self-adaptive casing centralizer and a righting method. The self-adaptive casing centralizer comprises a body. A plurality of self-adaptive expansion assemblies capable of being automatically expanded by pressure to automatically adapt to the diameter of a well to right and fix a casing are arranged on the body. Each self-adaptive expansion assembly comprises a bellows arranged in a stepped through-hole slot. The cross section of each bellows is in a wavy shape. The self-adaptive casing centralizer is simple in whole structure and convenient to operate and can adapt to different well diameters, the casing is effectively righted and fixed, and the well cementing quality is improved; the overall outer diameter of the body of the self-adaptive casing centralizer is smaller than the well diameter of a wellbore when the body of the self-adaptive casing centralizer is in an initial state, the centralizer can smoothly enter the well, the risk of encountering resistance is reduced, the well wall is not damaged, the bellows can uniformly expand, the supporting force is improved, the casing is effectively righted, and the centering degree of a casing column is increased; and after centering of the casing is completed, the wellbore annular clearance is uniform, the well cementing quality can be effectively improved, and the whole construction is easy and convenient.

A method for capturing and processing an image, comprising: capturing a captured image with an image sensor; retrieving steganographic marks hidden in said captured image; processing said captured image based on said hidden marks, so as to generate a processed image; matching the processed image with a reference image from a set of reference images and superimposing elements on the captured image, depending on said reference image. A user device, comprising an image sensor suitable for capturing at least one image and a processor configured to at retrieve hidden marks in said captured image and generating a processed image based on said hidden marks retrieval and annotations processed remotely; the user device is part of a system with a remote server matching the image.

The invention relates to an automatic pouring jacket paper tray center positioning clamping device which comprises a speed-fold chain mechanism for conveying paper cartons and a support base. A lifting mechanism is arranged on the support base. A clamping positioning shaping mechanism and a front blocking mechanism matched with the speed-mold chain mechanism are arranged on the lifting mechanism.The lifting mechanism, the clamping positioning shaping mechanism and the front blocking mechanism are each provided with an air cylinder. The front blocking mechanism comprises a second forward pressing piece and a photoelectric sensor. An air cylinder on the lifting mechanism controls the lifting mechanism to ascend to the corresponding position of the speed-fold chain mechanism. When paper cartons are moved to the front blocking mechanism on the speed-fold chain mechanism, the second forward pressing piece blocks the paper cartons from continuing moving forwards, the photoelectric sensor senses that the paper cartons are reached, and the clamping positioning shaping mechanism clamps and shapes the paper cartons. Due to the design of the centered clamping shaping mechanism with the combination of the air cylinder and a gear rack, the centering performance is good, and the clamping speed is high.

A shaft devcice (10) for a transmission (64) is disclosed, and is provided with a shaft (12) and a fixed gear unit (14). The fixed gear unit (14) is fixed on the shaft (12) through a shaft/hub joint part (30) and is provided with a fixed gear (16) and a hollow shaft portion (24), wherein the fixed gear (16) has a first axial side (20), a second axial side (22) and a tooth system (18), and the hollow shaft portion (24) surrounds the shaft (12) and extends from said first axial side (20) of the fixed gear (16). In the device, the shaft/hub joint part (30) comprises a main connecting portion (32), and the main connecting portion (32) is separated from the second axial side (22) of the fixed gear (16) in an axial direction.

The invention discloses a manufacturing method for a composite cast segment for dry-type waste heat recovery for blast furnace slag. The manufacturing method comprises the following steps: a copper ball is adopted as an inner core of the composite cast segment, and the inner core copper ball and an outer shell material are enabled to form the composite cast segment in a manner of steel die casting, ferrite steel is adopted as the outer shell steel material of the composite cast segment, and the volume ratio of the copper ball to the outer shell material is 1: 4 to 1: 15; and a casting temperature is 1510 DEG C to 1380 DEG C. The copper core in the composite cast segment has a high heat conductivity coefficient, and is capable of realizing rapid heat exchange and heat storage after making contact with the liquid-state blast furnace slag; and the outer ferrite steel is long in service life, and capable of meeting the continuous use requirement of a dry-type waste heat recovery process for the blast furnace slag. Due to the outer steel shell body of the composite cast segment, recovery and reuse for the cast segment can be realized through a magnetic separation process. The compositecast segment has an inner-copper and outer-steel structure, and the copper core is high in heat exchange speed, and higher in high-temperature-impact-resistant capacity. The composite cast segment isproduced through a steel die; the casting process is low in exhaust process difficulty; and the copper ball wrapped by molten steel is high in centering degree.

The invention discloses a bearing loading and unloading tool capable of improving centering degree and reducing a friction rate. The bearing loading and unloading tool structurally comprises a clamping frame and a bearing clamping column, the clamping frame is assembled and connected with the bearing clamping column, the clamping frame is composed of clamping arms, a clamping arm fixing shaft plate, an adjusting rotating plate and an adjusting rotating rod, the clamping arms are connected with the clamping arm fixing shaft plate through shaft bolts, the clamping arms are in transmission connection with an adjusting rotating plate shaft, the adjusting rotating rod penetrates through the adjusting rotating plate, and the bearing clamping column comprises a cushion ring mechanism and a columnshaft. According to the bearing loading and unloading tool, when the bearing is fixed on a shaft seat, the bearing is used for being spliced with the bearing clamping column in a transverse arrangement mode, the centering degree of the bearing and the bearing clamping column is improved, and the friction between a bearing inner ring and an outer ring of a cross rod of the shaft seat is also reduced; and the inner ring surface of the bearing is subjected to cushion protection through cushion strips of the bearing clamping column during separation, the friction between the bearing inner ring and the outer ring of the cross rod of the shaft seat is avoided, so that the quality of the bearing is guaranteed, and the service life of the shaft seat is prolonged.