33results about How to "Meet the needs of on-site production" patented technology

The invention discloses a casting blank length precision measuring device which comprises a roller way, a counter, a processor, an inlet sensor and an outlet sensor. The inlet sensor and the outlet sensor are placed at the two ends of the roller way respectively, the distance between the inlet sensor and the outlet sensor is D, the length of a casting blank is L, and the difference between D and L is space distance difference Dt. By measuring the space distance difference Dt, the length the casting blank is obtained by conversion according to the distance D. The error of Dt is far smaller than the error of the measured length L of the casting blank, and the precision of the casting blank length L obtained by conversion of the space distance difference Dt is higher than the directly-measured casting blank length L. A casting blank length precision measuring method comprises the steps that the inlet sensor and the outlet sensor are arranged at the two ends of the roller way, and the distance D between the inlet sensor and the outlet sensor is measured in advance; when the casting blank passes through the inlet sensor and the outlet sensor, triggering signals are generated, the counter carries out counting according to the triggering signals, and a counting result Dt is sent to the processor; and the processor computes the length L of the casting blank according to the distance D and the counting result Dt.

Provided is an ultrasonic-wave stress detection device capable of adjusting an acoustic beam angle and a test area. The detection device comprises a center positioning bench (100). Parallel guide rail racks (200) are fixed on opposite side faces of the center positioning bench (100) and are slidably connected with a glass pedestal (300). A U-type groove rail (310) with a protruding arc guide rail face (311) is arranged on the upper part of the glass pedestal (300). A probe fixing wedge (400) is slidably connected with the side wall of the U-type groove rail (310). The recessed arc face of the probe fixing wedge (400) cooperates with the protruding arc guide rail face (311) of the U-type groove rail (310). A probe fixing cavity (500) used for fixing an ultrasonic-wave probe is arranged on the upper part of the probe fixing cavity (500). According to the invention, adjustment and correction of first critical angles of a welded seam and of a heat affected zone and residual stress tests for different kinds of materials can be achieved; and residual stress tests of to-be-tested workpieces in different areas of regions can be achieved.

The invention discloses an on-line intelligent detection device for the particle size of sintering fuel. The on-line intelligent detection device comprises three sequentially-communicating sliding ways, a powerful vibrating screen, a first weighing device and a discharging bin, an intelligent robot and a feeding station, wherein the powerful vibrating screen, the first weighing device and the discharging bin are arranged at the side parts of the sliding ways; one end of the second sliding way of the three sliding ways communicates with the first sliding way, and the other end of the second sliding way communicates with the third sliding way; a plurality of loading containers are placed on the three sliding ways, the first sliding way is divided into a first area and a second area serving as a first microwave suppression station, and the second area communicates with the second sliding way; and the second sliding way serves as a microwave drying area, a plurality of first microwave sources are arranged at the top of the second sliding way, and the third sliding way is divided into a third area serving as a microwave drying judging station, a fourth area serving as a second microwavesuppression station and a fifth area. According to the on-line intelligent detection device, the moisture content and the particle size composition of the sintering fuel can be detected in real time,quick, on line and precisely, and field sintering production is guided in real time.

The great diameter and great span back-off packer as one water shut-off and pendent tool for oil well consists of one loading assembly and one packer assembly mainly. After the loading assembly and the packer assembly are lowered to the required depth and the well head is set, clear water is pumped to pressurize, the piston in the loading assembly pushes the sealing and anchoring unit in the packer assembly via the shearing pin to anchor and lock. Then, the loading assembly is separated from the packer assembly automatically. The present invention has great shut-off span, great inner diameter, stable sealing, firm anchoring and other advantages.

The invention discloses a centralized control system of a coal preparation plant. The centralized control system is characterized by comprising a centralized control room and substations, wherein thesubstations communicate with the centralized control room, PLC (Programmable Logic Controller) cabinets are respectively installed in the centralized control room and the substations, an upper computer is installed in the centralized control room, lower computers which communicate with the substations are installed on the substations, and an equipment control schematic diagram in each PLC cabinetcomprises a fuse Fu, a breaker QL, a normally-closed protective contact KP, a first relay KM, a start button SF, a stop button SS and a module output second relay KC. Compared with the prior art, thecentralized control system has the following advantages that operating signals such as leakage alarm signals, start fault signals, electric signals, operating signals, shutdown signals and the like can be detected in real time, and current AI data of a motor (above 37 KW) and various material level and liquid level and bin level signals can be detected in real time.

The invention provides an online moisture detection device for a bulk material. The device includes four slideways which form a square closed loop, and multiple charging containers (2) are placed in the closed loop; a first slideway (L1) is a charging area, a second slideway (L2) is a microwave drying area, a third slideway (L3) is a detection area, a fourth slideway (L4) is a discharge area; eachslideway is provided with a linear motor with a driving bar, and the linear motors are used for pushing the charging containers (2) to slide from one position to a next position. The moisture of different types of the bulk material can be detected in real time, rapidly, online and accurately, and the measurement precision can reach the moisture measurement precision of a manual sampling, drying and weighting method.

The invention relates to an environment-friendly oil drainage tool for an oil pipe. The environment-friendly oil drainage tool comprises a central pipe, wherein the upper end of the central pipe is inthreaded connection with an upper joint; the lower end of the central pipe is in threaded connection with a lower joint; a circumferential strip-shaped hole groove and an oil drainage hole I are formed in the upper joint; the upper joint is in threaded connection with a protection ring; the upper joint is sleeved with a sealing sleeve; the sealing sleeve is provided with a toothed rear end; a pinshaft hole and an oil drainage hole II are formed in the sealing sleeve; the middle part of the central pipe is sleeved with a toothed check ring, a centralizing body main body and a friction block;a guide groove is formed in the rear part of a guide sleeve; a guide pin is arranged on the lower joint and is arranged in the guide groove; the lower end of the lower joint is in threaded connectionwith an anti-collision ring. According to the environment-friendly oil drainage tool, crude oil can be effectively prevented from overflowing from the oil pipe to a wellhead to cause environmental pollution during operation through simple operations such as lifting and rotating, so that the wellhead operation condition is improved.

The invention relates to a method and a tool for installing large electric vertical-type rectangular cabinet products. The method comprises the following steps: putting a large electric vertical-type rectangular cabinet on a tool which can turn 90 degrees; firstly, erectly installing parts and the wiring thereof suitable for being installed in an erect mode on the cabinet; secondly, turning the large electric vertical-type rectangular cabinet by 90 degrees by the tool which can turn 90 degrees, horizontally arranging the cabinet, and then installing parts and the wiring thereof suitable for being installed in a horizontal mode. The invention ensures that large electric vertical-type rectangular cabinet products and the wiring thereof are all installed in a horizontal plane. The method also comprises the alternative steps: firstly, installing parts and the wiring thereof suitable for being installed in a horizontal mode on the large electric vertical-type rectangular cabinet; then turning the large electric vertical-type rectangular cabinet by 90 degrees by the tool which can turn 90 degrees; and finally, installing parts and the wiring thereof suitable for being installed in an erect mode.

The invention relates to an oil draining device for tubing. The oil draining device comprises a center pipe; the upper end of the center pipe is in threaded connection with an upper joint, and the lower end of the center pipe is in threaded connection with a lower joint; circumferential strip-shaped hole grooves and oil draining holes I are formed in the upper joint, and the upper joint is in threaded connection with a protective ring; a sealing sleeve sleeves the upper joint and is provided with a toothed rear end, and pin shaft holes and draining holes II are formed in the sealing sleeve; atoothed check ring, a centralizer main body and a friction block sleeve the middle of the center pipe; a guiding groove is formed in the rear part of a guiding sleeve, a guiding pin is arranged on thelower joint, and the guiding pin is arranged in the guiding groove; and the lower end of the lower joint is in threaded connection with an anti-collision ring. According to the oil draining device, the situation that during operation, crude oil overflows out of a wellhead from the tubing, and consequently environment pollution is caused can be effectively prevented through easy operations such asupward lifting and rotating, and thus the operation condition of the wellhead is improved.

The invention discloses a streaming media data switching method and device, equipment and a storage medium. Relates to the technical field of streaming media. The data switching method comprises the following steps: firstly, generating a data switching instruction according to an obtained data switching request, and obtaining a to-be-switched data stream according to the data switching instruction; then processing the to-be-switched data stream, determining whether the frame number of multiple continuous video frames starting from the first video frame corresponding to the processed to-be-switched data stream meets a preset conversion condition or not, determining a target data stream according to the processed to-be-switched data stream under the condition that the preset conversion condition is met, and switching the to-be-switched data stream according to the target data stream. And finally, switching the source data stream in the display state into the target data stream. Therefore, the obtained data stream can be processed in real time, and the data stream can be switched without framing, so that the on-site manufacturing requirement is met.

The invention discloses a precise temperature control system of a low-temperature chain grate machine for copper tailings and a control method of the precise temperature control system. The control system comprises a chain grate machine body, a main fan, a first circulating fan, a second circulating fan, a first main circuit and a second main circuit; the chain grate machine body is divided into 24 segments in the length direction, the first segment of the chain grate machine body is provided with a fuel gas inlet, and the 24 segment of the chain grate machine body is provided with a fuelgas outlet; the main fan is connected with the fuel gas inlet of the first segment of the chain grate machine body through a pipeline; the left side and the right side of each segment of the chain grate machine body are provided with branch circuits respectively, and each branch circuit is provided with an electric control valve; all the branch circuits on the left side of the chain grate machinebody are converged to the first main circuit, and all the branch circuits on the right side of the chain grate machine body are converged to the second main circuit; and the first circulating fan is located on the first main circuit, and the second circulating fan is located on the second main circuit. According to the precise temperature control system of the low-temperature chain grate machine for the copper tailings and the control method of the precise temperature control system, the temperature of the low-temperature chain grate machine for the copper tailings can be precisely and automatically controlled, operation is easy, convenient, reasonable, humanized, automatic and precise, the site production requirements can be completely met, manpower resources are saved, and unmanned production can be achieved.

The invention discloses a car frame lifting appliance. The car frame lifting appliance comprises an operating handle (1), a lifting lug (2), lifting rods (3), a connecting rod (4), clamping mechanisms, skid-proof blocks (6), guide bodies (7), connecting blocks (8) and springs (9), wherein the two ends of the lifting lug (2) are each rotationally connected with one end of the corresponding lifting rod (3); the other ends of the two lifting rods (3) are separately rotationally connected with the inner ends of two clamping mechanisms; the connecting blocks (8) are separately fixed to the two ends of the guide bodies (7); the middle parts of the clamping mechanisms are each rotationally connected with the corresponding connecting block (8); each guide body (7) is of a telescopic structure; the end parts of the guide bodies (7) are each fixedly provided with one skid-proof block (6); one end of the connecting rod (4) is articulated with one clamping mechanism; one end of the handle (1) is articulated with the other clamping mechanism; and the other end of the connecting rod is articulated with the handle (1). The car frame lifting appliance disclosed by the invention is applicable to car frames different in width and is safe in use and high in efficiency; and moreover, by adopting the lifting appliance, a single person can accomplish the lifting work of the car frame.

The invention discloses a production process of a special straightening roll for an imported two-roll straightening machine. The production process comprises the following steps: step 1: adopting Cr12MoV as a material of the straightening roll, and performing a blank precision casting process and a slow cooling process, wherein degree of finish of the surface of a precision casting mould is 25-30 [mu]s; step 2: performing forging on the blank with a forging ratio of 3-4; heating the forged blank to a temperature of 1200-1250 DEG C within 4-6 hours, preserving the heat for 12-48 hours, discharging the blank, and performing forging and preliminary forming at a temperature of 1100-1200 DEG C; step 3: performing softening annealing treatment on forged and formed blank, and ensuring the outline dimension to reach the approximate dimension of a curve of the straightening roll; and step 4: performing thermal treatment on the processed straightening roll: performing vacuum quenching on the straightening roll, naturally cooling in a sealed space until the indoor temperature is reached.

The invention relates to a tension and elongation optimization method for a single-stand temper mill unit, and belongs to the technical field of cold rolling. According to the technical scheme, production parameters of the single-rack temper mill unit are summarized, and the optimal front-back tension distribution state of the unit is calculated by integrating multiple factors; the outlet strip shape and a slip factor are taken as target functions, and the actual elongation and the set elongation are controlled within a certain range as constraint conditions; and initial front and back tension and elongation are set, production parameters meeting strip shape control and rolling stability are obtained through multiple iterations, and meanwhile the requirements of two important indexes are met. The method has the beneficial effects that the method has important guiding significance on field production, and compared with a conventional manual adjustment and plate shape feedback adjustment method, the tension calculation and setting method is closer to reality and better meets the requirements of field production, and the plate shape can be further improved.

The invention provides an extractable fire cylinder smoke tube which comprises a fire cylinder smoke box, a vessel flange, a sliding channel, a tube body rear sealed end, a fire cylinder smoke tube body and an explosion door, wherein a heating furnace body adopts a dual-return travel structure; the fire cylinder smoke tube body and the fire cylinder smoke box are connected via the vessel flange with an equipment cylinder to form a whole; a support is arranged at the bottom of the fire cylinder smoke box; the sliding channel is arranged in the cylinder body of the fire cylinder smoke box; a lifting lug capable of lifting is arranged at the upper part of the fire cylinder smoke box; the cylinder rear sealed end is located at the rear part of the fire cylinder smoke box; both the explosion door and the cylinder rear sealed end adopt a packing box type structure; the fire cylinder smoke tube is simple and reasonable in structure, safe and convenient to use and convenient to maintain, can be dismounted and replaced by applying a gantry and a lifting hoist on application site rapidly, can quickly recover production, and satisfies demand for field production.