73 results about "Back-stripping" patented technology

Disclosed herein is a wheel balancing device having a plurality of wheel balancing weights attached to a top surface of an elongate tape, and a backing strip removably attached to and protecting an adhesive layer on the bottom surface of the tape. The backing strip is serrated below the grooves separating the individual wheel balancing weights to facilitate separation of the individual weights quickly and easily. Each backing strip serration may be in the shape of a lift tab or finger grip to further ease removal of the backing strip from the adhesive layer on the bottom surface of the tape.

The invention discloses a method for controlling strip-steel head and tail temperature, comprising the following steps of: A. detecting positions of welded seams of strip-steels by a detector; B. calculating predicted strip temperature values of the front and the back strip-steels at a heating furnace outlet by a mathematical model to obtain a strip temperature variation between the front and the back strip-steels; C. taking the strip temperature variation into consideration and ascertaining target strip temperatures of the upper and the lower strip-steels at the positions of the welded seams according to a principle that the predicated strip temperature values at the tail of the upper strip-steel coil and at the head of the lower strip-steel coil are not lower than a lowest annealing temperature required by the strip-steels; D. according to the obtained target strip temperatures, utilizing an empirical formula for the temperature-rise period of the heating furnace to fix the locus of the target strip temperature at the welded positions; E. according to the difference between the locus of the target strip temperature and the predicated strip temperature values, calculating a gas flow compensation value; F. counting up the gas flow compensation value and a gas flow set value calculated by the model and transmitting the total value to a heating furnace meter; and G. controlling the openness of a gas valve by the heating furnace meter through a loop.

This invention discloses one kind of concrete tie and its production method, after this sleeper suits the heavy load and raises the fast railroad standard line to use sleeper, as well as the radius 500m - 1200m curve and the straight line mountainous area track line use, this invention sleeper keeps off the shoulder structure, it keeps off the shoulder concrete to raise, the gauge back plate adds thick, the rubber backing strip adds thick, sleeper in according to vertical staggers the arrangement way arrangement to have the spiral rib steel bar, is keeping off the shoulder nose minute position disposition shearing force muscle. The beneficial effect is: Enhances keeps off the shoulder intensity, the change crosswise action in keeps off on the shoulder the transmission direction, increased the area of thrust surface, the theory and the experiment had proven might enhance keeps off above a shoulder limit bearing capacity time, effectively solved the concrete to keep off the shoulder to be easy to damage the question; Simultaneously solved the gauge apron block along to keep off on the shoulder to crawl, gets down the string question; Enhances under in the axle and the pillow the section dead load strength, prevented produces along the steel bar vertical crack, effectively strengthens sleeper anti- weary ability and later period intensity.

The invention provides an activity calculating method suitable for a fault of a lost upthrown-side stratum. The method comprises the steps that the evolutionary process of the fault is recovered through a balanced section method; the target stratum is recovered to a state of the end of the depositional stage by using a back-stripping method; the thickness difference of target strata of two sidesof the fault after reconstruction is regarded as the paleo fall D; the fault dip angle and deposition time are determined; the slipping rate of the fault is obtained through calculation by using a formula to represent the activity of the fault. The quantitative evaluation method is simple and convenient to use, based on construction restoring, the influence of stratum loss is evaded, and meanwhile, three factors including the paleo fall, the fault tip angle and the deposition time are taken into consideration, so that the activity characteristics of the fault are more comprehensively reflected.

The invention discloses an internal spiral nozzle with a diversion trench, and the internal spiral nozzle is installed on a bit. At least more than two spiral diversion trenches are arranged on an internal spiral nozzle body, one end of the internal spiral nozzle body is connected with the bit through an external thread, the other end of the internal spiral nozzle body is inserted in the inner cavity of a bush, a spacing ring is arranged on the middle part of the excircle of the bush, and a spanner fastening groove is arranged on one end surface of the internal spiral nozzle body. The internal spiral nozzle is a general and replaceable hard alloy or ceramic internal spiral diversion trench nozzle for the bit, the internal spiral nozzle has the advantages that the cooling and lubricating effects are good, the damage of a bit clad sheet and gauge teeth can be reduced, the phenomenon that a rubber dough packs the bit is solved, the rotating bit nozzle can be prevented from wire-back stripping during a shaking process, the tooth protecting effect is good, the bit clad sheet and the gauge teeth can be prevented from being impacted by gravel, the fluid speed is improved, the sand carrying capacity is good, the pumping pressure of ground facilities is relieved. The internal spiral nozzle provided by the invention can be widely used for installing whole-section bits applied to the oil industry, the geologic prospecting industry, the coal mine industry, the railway industry, the underground engineering industry, the national defense industry and the like.

A basement bottom wall panel post-casting strip waterproof structure and its construction method, comprising a bottom wall panel (1) and a post-casting strip (2), characterized in that: the side wall of the bottom wall panel (1) and the post-casting strip The joint part of (2) is provided with a concave seam (3), and the middle part of the concave seam (3) is inlaid with a waterproof steel plate (4), and the foundation cushion (5) is located at the bottom of the post-casting belt (2) A water collection tank (6) is provided, and the bottom of the water collection tank (6) is horizontally fixed with a water collection semicircular pipe (7). One or more waterproof layers are arranged between the cushion (11) and the lower concrete cushion (12). The present invention adopts multiple waterproof designs, which improves the waterproof performance and has better adaptability to poor building settlement. It effectively integrates water blocking and drainage, and solves the long-standing technical problem of different degrees of leakage in the post-casting belt of the basement.

The invention discloses a combined wall comprising a base (1), a visible upright (2), an invisible upright (3), a beam (4), a wall buckling board (5), a foot blocking board (6), a back strip (7), an inclined jackstay (8) and an inclined jackstay base (9). The base (1), the visible upright (2), the invisible upright (3), and the beam (4) are connected with each other via bolts; the wall buckling board (5) and the back strip (7) are connected with each other via a hanging buckle (10); polyurethane wall paint is coated around the surface of the wall buckling board (5); nano-modification fluorinated polyurethane surface paint is coated around the surface of the hanging buckle (10). The combined wall has the advantages that the combined wall is firm, beautiful, long in service life and convenient to use and the like.

A retaining wall system is provided for mechanically stabilizing an earthen wall. The system comprises anchor receiving channels, anchoring tie back strips, and a plurality of connecting anchors. A face panel comprises at least one fastener receiving channel and a prefabricated wall fascia panel. Tie back members extend from the wall panels and are to be embedded within the earthen soil or backfill material thereby securing the tie backs and the wall panels in a fixed assembled, position.

The invention discloses a shear wall mold board external corner counter-pulling device which comprises a horizontal back strip and a counter-pulling screw device. The L-shaped horizontal back strip includes two strip bodies vertical to each other. The two strip bodies are fixed on the mold boards on two sides of an external angle. A steel plate seat is fixed at one end, close to the external angle, of each of the two strip body. The counter-pulling screw device comprises a screw and circular gasket type hexagonal nuts. The screw sequentially penetrates the two steep plate seats to connect the same. The circular gasket type hexagonal nuts for locking the mold boards on two sides of the external angle are disposed at two ends of the screw. By the shear wall mold board external corner counter-pulling device, mold expansion and mud leakage can be avoided, the shear wall concrete external corner is enabled to be angular, smooth and free of mold expansion, and concrete waste during construction is reduced greatly.

The invention discloses commercial fish grading and scaling equipment. The commercial fish grading and scaling equipment comprises a feeding strip on which a front dumbbell brush and a front strip-shaped brush are arranged in a conveying direction at intervals, wherein a guide plate in the shape of a horn-shaped opening is arranged in front of the front dumbbell brush, and a spray pipe is arranged near the guide plate; a surface change drum is arranged at an end part of the feeding belt, and a clamping belt capable of being clung to the feeding belt is arranged in a position close to the surface change drum; a discharging belt is arranged near a lower side surface of the clamping belt; a back dumbbell brush and a back strip-shaped brush are arranged on the discharging belt in the conveying direction at intervals; a drum screener capable of performing size screening is arranged near a lower side of the end of the discharging belt. A fish body enters a clamping gap between the feeding belt and the clamping belt, is moved for about a half circle and is turned over, so that the other side of the fish body can be scaled. The equipment has the advantages of capability of grading fishes and scaling double sides of each fish, good scaling effect, little manual intervention and low fault rate.

A method of repairing a turbine nozzle segment having at least one vane disposed between outer and inner bands. The method includes using an salvageable part, such as honeycomb backing strip remnant, from a nozzle segment that is unrepairable, and joining the honeycomb backing strip to a replacement casting. The replacement casting includes a tenon formed on the inner band that mates with a mortise formed on the back side of the honeycomb backing strip. A nozzle segment and nozzle segment casting used in connection with the method is also disclosed.

The invention discloses a multiple-back-strip frequency band expanding low-profile double-layer printed ultra-wideband antenna, which is used for adjusting performances of an ultra-wideband antenna such as working waveband, antenna gain and antenna directionality through changing relative positions of the back strips and a vibrator and coupling the back strips with the vibrator to generate induction capacitance. The multiple back strips and the vibrator which are arranged on and under a dielectric plate do not need to be perforated, and a plurality of resonance points are formed by the induction capacitance generated through electromagnetic coupling, thus impedance characteristics of the antenna is reduced along with variation of frequency and the frequency band of the antenna is expanded. The low-profile double-layer printed ultra-wideband antenna is provided with 1 to 3 back strips which respectively expand 3 frequency bands of the original dipole antenna, the equivalent arc length of the back strips is half of wavelength corresponding to center frequency of the frequency band expanding part, thus the antenna covers all communication wireless system services which are commonly used at present, has the advantages of high gain, stable directivity and miniaturization, and has a wide application range in wireless communication.

The invention discloses a low-profile full-waveband WLAN-MIMO indoor distributed antenna with an orthogonal or circumferential distribution radiation body. The antenna is composed of a transverse dielectric plate, a longitudinal dielectric plate, a reflecting plate, a Balun, back strips and a vibrator, wherein the back strips and the vibrator are manufactured by adopting the copper coating technology. The antenna is in the form of a MIMO antenna capable of covering the full WLAN frequency band. According to the technical scheme of the invention, the relative positions of the back strips relative to the vibrator are changed. Meanwhile, the back strips are coupled to the vibrator to generate the inductive capacitance so as to adjust the performances of an ultra-wideband antenna, such as working waveband, antenna gain, antenna directionality and the like. Through adjusting the distance and the angle between antenna units, the antenna is minimized, high in isolation degree, low in correlation coefficient and high in gain. The antenna covers all wide frequency bands during the current wireless communication process and is large in data capacity.

The invention discloses a novel high-gain printed quasi-yagi antenna, relates to a printed quasi-yagi antenna, in particular to a novel high-gain printed quasi-yagi antenna, and aims at solving the problems that the printed quasi-yagi antenna of an existing single director is relatively small in grain and cannot meet the reality requirement. The novel high-gain printed quasi-yagi antenna comprises a dielectric substrate, a reflector, a front strip feeder, a back rectangular feeder, a back strip feeder, two active oscillator arms and three director dipoles, wherein the reflector is printed at the lower part of the front surface of the dielectric substrate, and is an enclosed metal layer which is composed of a concave parabola side and a straight line side; the straight line side of the reflector overlaps with the bottom side of the front surface of the dielectric substrate; the three director dipoles are sequentially printed at the upper part of the front surface of the dielectric substrate from top to bottom; two active oscillator arms are printed in the middle of the front surface of the dielectric substrate in a line form; the two active oscillator arms form an active oscillator; and the right end of the active oscillator arm at the left side is connected with the middle part of the parabola side of the reflector through the front strip feeder. The novel high-gain printed quasi-yagi antenna belongs to the field of wireless communication.

The invention discloses a post-cast strip structure of a prestressed concrete plate. The post-cast strip structure comprises two longitudinal post-tensioning unbonded prestressed reinforcing bars (3) arranged in precast concrete (1) on two sides of a first longitudinal non-prestressed reinforcing bar (6) and second longitudinal non-prestressed reinforcing bars (7) substituting original post-cast strips' longitudinal post-tensioning unbonded prestressed reinforcing bars (4) by adopting an equal-strength principle and in post-cast strips (2), the second longitudinal non-prestressed reinforcing bars (7) are located on two horizontal sides of the longitudinal post-tensioning unbonded prestressed reinforcing bars (3) in the precast concrete (1), and two ends of the second longitudinal non-prestressed reinforcing bars (7) extend to the precast concrete (1) of one end of a post-cast strip. By the arrangement, same bearing force can be guaranteed, cement consumption can be reduced, the construction of the post-cast strip is simplified, and concrete cracks in the post-cast strip are prevented.

The invention relates to a prefabricated concrete floorslab for building. The floor work on the construction site is concentrated in the factory, and the work of pouring concrete on site is only back strips among a few plates. The prefabricated concrete floorslab extends into a recurved anchorage beam in a U-shaped beam through a top rebar and is connected with the steel plate shear wall structure through the connection structure in the plate, which solves the problems of collapse of the prefabricated plate, and transfer of the horizontal force, and realizes hogging moment on the top generated by loading in the bearing stage, and no cracking of the floorslab top after the deformation of the floorslab is guaranteed.

The invention discloses a post-cast belt molding device for reinforced concrete components, which mainly includes post-cast belt filling joints and a main body of the forming device. The post-cast belt filling joints are located between adjacent reinforced concrete component main bodies, wherein the reinforced concrete component main body The internal protruding steel bars extend into the post-cast tape filling joints, and the protruding steel bars located in the post-casting tape filling joints face each other and are arranged to overlap. Close, and at the same time pour grout into the backfilling gap through the concrete grouting hole. At this time, after the postcasting tape filling gap is filled, seal the concrete grouting hole, wait for the concrete to solidify, and finally remove the assembly buckle The cover and side formwork are all that is needed, and the concrete grout can be prevented from leaking during the pouring process as a whole. At the same time, the assembled buckle cover can be installed gradually along with the grouting process, and the pouring process can be observed more clearly as a whole.

The invention discloses a die with a forming and shaping adjusting device. The die comprises an upper die holder, an upper liner plate, an upper splint, a back stripping plate, a stripper plate, a lower template, a lower liner plate and a lower die holder which are fixedly connected with one another in sequence, wherein a bent punch is arranged on the die; the die further comprises the forming and shaping adjusting device which is arranged on the side face of the die and is contacted with the bent punch; and the forming and shaping adjusting device comprises an adjusting rod which is contacted with the bent punch and an adjusting screw which is arranged on the adjusting rod. The die has a simple structure, low cost and extremely high practicability, is convenient to operate, and is suitable for all continuous dies; and moreover, maintenance is rapid, a large amount of die repairing time can be saved, the service life of the die is prolonged, and the production efficiency is greatly increased.

The invention discloses a quick detaching structure for a feeding block and a punch of a stripping plate of a stamping die in the die. The quick detaching structure comprises an upper cushion plate, an upper clamping plate, a back-stripping plate and a stripping plate, wherein the upper cushion plate and the upper clamping plate are mutually fixed; the back-stripping plate and the stripping plate are mutually fixed; a punch fixing block is arranged in a first square through hole in the middle of the upper clamping plate; a stripping plate fixing block is arranged in a third square through hole in the middle of the stripping plate; the punch is inserted into the middle of the punch fixing block and is inserted into a through hole in the middle of the stripping plate fixing block through a second through hole in the middle of the back-stripping plate; the punch fixing block enables the upper surface of the punch fixing block to stick to the lower surface of the upper cushion plate through a first lock screw; and the stripping plate fixing block enables the upper surface of the stripping plate fixing block to stick to the lower surface of the back-stripping plate through a second lock screw. In the way, the quick detaching structure provided by the invention can quickly detach and clamp, so that the aiding time is saved, the stop time is reduced, the labor intensity of technicians is reduced, and the risk factor of the die is reduced.

The invention discloses an improved recovery method for burial history. The method comprises the following steps that (1), all stratum parameters in current stratigraphic columns are measured through experiments; (2), the largest burial depth of all stratums of the current stratigraphic columns is found, and the framework thickness is calculated through the largest burial depth; and (3), stratigraphic column recovering is conducted and comprises two parts of top layer compaction removal treatment and underlayer correcting. According to the improved recovery method for the burial history, the framework thickness calculation method based on the largest burial depth and equivalent depth point treatment in the back-strip process is comprehensively considered, and the improved recovery method for the burial history is designed. Finally, through the object facing method, computer modeling is conducted on the burial history recovery method, stratigraphic column recovery algorithm is achieved, experimental analysis is conducted, and the experiments show that a burial history curve graph can be more clearly and accurately displayed, and the complex conditions such as stratum denudation and lifting can be well treated, so that the rationality and effectiveness of the improved recovery method for the burial history are certified.