71results about How to "Wide range of lengths" patented technology

The blocking-off process for high water seepage layer includes injecting dispersion fluid-I into stratum, injecting dispersion fluid-II, keeping well in close state for 5-7 days and injecting steam chemically. The dispersion fluid-I is compounded with waste well drilling polymer sludge and lignosulfonate in 0.1-5 wt% as sludge diluent. The dispersion fluid-II is compounded with waste oil field sludge in 30-50 wt%, waste water in 49-69 wt% and OP-type surfactant as dispersant in 0.3-1 wt%. The present invention can block active side and bottom water in oil deposit area effectively in monoway without blocking hot exploitation steam injecting channel. The present invention has relatively low cost, and is suitable for exploit dense oil thermally.

The invention discloses a bending discharging mechanism. The bending discharging mechanism comprises a base (1). The base (1) is provided with a reference face (3) used for containing the free end of a pipe (2), and the free end of the pipe (2) rotates through the reference face (3). The base (1) is provided with a boss (4) which is higher than the reference face (3) and is used for positioning the other end of the pipe (2). The boss (4) is provided with an opening (5). The base (1) is provided with a through hole (6) for the bent pipe (2) to slide in the vertical direction. The bending discharging mechanism is low in maintaining cost and easy and convenient to operate, and manual pipe taking is not needed.

An automatic elastic tension compensator for the contactor of electric collector is composed of left and right external suporting pads, left pull hook passing through left external supporting pad and fixed to right one, right pull hook passing through right external supporting pad and fixed to left one, at least two serial springs on said left and right pull hooks, and internal supporting pad between said springs. Its advantage is high tension-compensating precision.

The invention provides a novel cable oscillation wave partial discharge detection system which comprises a DC high voltage device, an IGBT high voltage switch, a resonant inductor, a capacitive voltage divider, a monitoring background, a compensation capacitor, partial discharge pulse detectors, and a detected cable. The system has the advantages that: (1) the compensation capacitor with adjustable capacitance is added, when a cable with too short length is measured, the measurement precision is effectively improved; (2) two ports of the cable are equipped with the partial discharge pulse detectors, the problem of too serious attenuation caused by a too long signal transmission distance in the process of the oscillation wave test of the cable with the too long length is effectively solved, and the measurement precision is raised; and (3) the measurement effects of a too short cable and a too long cable are good, and the measured cable length range is increased significantly compared with the prior art.

An automatic elastic tension compensator for contactor of electric collector is composed of external sleeve pipe with connector, middle sleeve pipe with external spring, and internal sleeve pipe with connector and internal spring. It has high tension-compensating precision.

The invention relates to a casing pipe type dura mater dissecting device, which comprises a guiding pipe and a dissector capable of being sleeved inside the guiding pipe, wherein the guiding pipe is a hollow arced pipe with two open ends, the cross section of the guiding pipe is of a bow shape, the dissector is arced under a nature state, the cross section of the dissector is of a bow shape, the dissector is provided with an external dissector shell and an internal dissector inner core, and the dissector is provided with the dissector shell with at least one closed end so as to form a dissecting end. The casing pipe type dura mater dissecting device has the advantages that: the dissector can go into a path along a specific path under the guidance of the guiding pipe so as to effectively prevent deviation and unnecessary skull and dura mater separation, the casing pipe type dura mater dissecting device is high in dissecting efficiency, low in damage rate, simple in structure and simple and convenient to operate, is suitable for the skull and dura mater separation of bone holes of different spacings, and can be used for effectively preventing a milling cutter from breaking dura mater or venous sinus to increase the safety of craniotomy.

The invention discloses a gas drive overburden simulation device and a use method thereof. The gas drive overburden simulation device comprises an injection pump, a piston intermediate container, a core holder, a pressure stabilizing tank and at least two sets of oil extraction devices, wherein the injection end of the core holder is provided with at least one liquid inlet through hole, and the extraction end of the core holder is provided with at least two oil outlet through holes. The gas drive overburden simulation device provided by the invention can simulate the gas drive overburden of atwo-dimensional core model under the conditions of high pressure and high temperature, widens the length range of the core model, optimizes a gas drive overburden representation mode, improves the gasdrive temperature and pressure of the gas drive overburden simulation device, the application range of the core length and the like and the precision of overburden simulation and overburden representation results, and provides convenience for further researching the overburden law under different factors of oil reservoir conditions.

The invention discloses a superconducting wire performance measuring device based on conduction cooling. The superconducting wire performance measuring device comprises a temperature control assembly,a loading rod, a vacuum Dewar, a supporting device, an electrical assembly and a clamp. The temperature control assembly is cooled through a refrigerating machine installed on a flange of an end plate of the vacuum Dewar, a thermometer is installed on a superconducting wire to measure the temperature of the superconducting wire, an anti-radiation screen is installed in the vacuum Dewar, and the electrical assembly feeds the superconducting wire through a current lead and measures electrical signals at the two ends of the superconducting wire. The loading rod and the supporting device are usedfor installing the superconducting wire through the clamp and applying a load to the superconducting wire, and a strain gauge is installed on the superconducting wire to measure the strain state of the superconducting wire. The superconducting wire performance measuring device based on conduction cooling is high in operability, simple in structure and capable of achieving low-temperature stress-strain measurement of different temperature sections.

The invention discloses a bending and blanking device. The device comprises a base (1), wherein the base (1) is provided with a reference surface (3) for placing a free end of a pipe (2) and rotating the free end of the pipe (2); the base (1) is provided with a boss (4) higher than the reference surface (3) for positioning the other end of the pipe (2); the boss (4) is provided with an opening (5) for accommodating the end part of the pipe (2); the base (1) is provided with a through hole (6) for sliding the bent pipe (2) in the vertical direction; the shape of the through hole (6) is consistent with the bending shape of the pipe (2); and the through hole (6) penetrates through the upper surface and the lower surface of the base (1) in the vertical direction, and is communicated with the opening (5) in the vertical direction. The invention provides the bending and blanking device with low maintenance cost, simple operation and no need of manual pipe taking.

The invention discloses a peeling device used for tree processing. The device comprises a supporting frame, a waste baffle is arranged on the rear end in the supporting frame, a waste collecting groove is formed in the front end in the supporting frame, wood clamping mechanisms are arranged on the left side and the right side of the top of the supporting frame, each wood clamping mechanism comprises a clamping fixed base and a hydraulic cylinder, the two clamping fixed bases are fixedly connected to the left side and the right side of the top of the supporting frame, the opposite sides of thetwo clamping fixed bases are fixedly connected with the hydraulic cylinders, and original timber is clamped between the output ends of the two hydraulic cylinders. Through the hydraulic cylinders, when the original timber is peeled, stable clamping is provided, dangerous hidden danger caused by breaking due to poor fixing in a wood machining device can be avoided, and through limiting guide railsand guide rail air cylinders, cooperation with work of a driving motor, a driving gear shaft, a machining roller and roller blades is achieved.

A high-speed mechanical arm with a precise positioning function comprises a motor, a driving part, a rack and a sliding block, wherein a sliding slot is arranged on the rack, the sliding block is arranged in the sliding slot and is driven by the driving part to move along the sliding slot. The mechanical arm is characterized in that the driving part comprises a winding drum and a steel wire rope wound on the winding drum, a threaded groove is arranged on the winding drum, the steel wire rope is coiled in the threaded groove and is arranged between the winding drum and the sliding slot to form a revolving loop, and a section, which is arranged in the sliding slot, of the steel wire rope is fastened with the bottom of the sliding block. The winding drum with the threaded slot is driven by utilizing a servo motor, the steel wire rope is precisely wound and unwound from the winding drum, namely, when the winding drum rotates for a turn, the linear distance that the steel wire rope moves is converted from the perimeter of the winding drum, under the same rotating speed, the speed of the steel wire rope is much higher than the speed of a screw nut pair, which is characterized in that the linear distance converted from the screw pitch, and the positioning and control on the sliding block are realized through controlling the rotating speed and the start and stop of the rotation precisely by the servo motor.

The invention discloses a novel drying box for cable cores. A plurality of winding columns used for winding the cable cores to be dried are arranged in an inner box body, and the cable cores are woundon the winding columns along wavy-line paths from top to bottom; and a plurality of end surfaces of the inner box body are configured to be open or formed with a plurality of through holes, a plurality of gas outlet holes are distributed in the top end surface of an outer box body, at least two air blowers arranged in parallel are arranged on the bottom end surface of the outer box body; heatingwires are arranged at one side or two sides of a cavity; and the air blowing direction of the air blowers is vertically upward, so that hot air is formed from the heat generated due to the heating ofthe heating wires, and the hot air is blown to the outside of the outer box body from the inside of the inner box body. The top end surface and the bottom end surface of the inner box body extend outwards along the central axis separately to form rotary shafts, and the rotary shafts are rotatably embedded into the inner wall of the outer box body, and connected with a drive motor. The novel dryingbox for the cable cores is simple in structure, convenient to use, and wider in cable core length application range, thereby increasing the drying efficiency for the cable cores and optimizing the drying effect for the cable cores.

The invention relates to a lens fixing mechanism for glasses with a part of frame, mainly comprising a lens and support frame poles arranged at the upper chord or the lower chord, or the left chord and the right chord of the external edge of the lens. The rest external edges of the lens are fastened and fixed through a fixed thread. At least one end of the fixed thread is connected with a column release-stop block. The arc end of the frame pole connected with and opposite to the release-stop block of the fixed thread is provided with an inner thread cylinder which can be embedded into the release-stop block in a sliding way. The release-stop block of the fixed thread is slide-embedded into a tubular thread inner tube which is screwed with the inner thread cylinder positioned at the opposite arc end of the frame pole. The other end of the fixed thread is led from the fixed-thread hole positioned at the bottom of the inner tube and then is embedded into a V-shaped groove positioned on the external edge of the lens, and finally fixedly connected with the other arc end of the frame pole. The invention has the advantages of being easy for demounting and mounting, being capable of fastening the lens even using a non-shrinkable fixed thread without worrying the release of the fixed thread, and being unnecessary to set the length of the fixed thread according to the size of the lens strictly.

An induction heating positioning device mainly structurally comprises a sealing nut, a supporting arm, an induction coil, an asbestos board, an asbestos rope, an adjusting cushion block, a quartz tube and a blank, a curved extension portion of the upper end of the induction coil is connected with the supporting arm, the other end of the supporting arm is connected with the sealing nut, the induction coil is vertical in the axial direction, the asbestos board is arranged at the lower end of the induction coil in a cushioning mode and tied through the asbestos rope, the quartz tube is placed in a heating tube, and when the blank is heated, the appropriate adjusting cushion block is selected according to the length of the blank so that the blank can be conveniently clamped through tweezers after the blank is placed in. The induction heating positioning device is simple to manufacture and low in manufacturing cost; positioning is accurate and reliable, and consistency of product quality is guaranteed; heated blanks are wide in length range and can be as short as 3 mm and as long as 100 mm; the labor intensity of operators is relieved, and production efficiency is improved. Personal safety of the operators is guaranteed.

The invention provides a cutting and spinning synergistic fatigue low-stress blanking device and method, and belongs to the technical field of precision forming machining.The device comprises a rack, a clamping rotating mechanism, a cutting mechanism and a loading mechanism, and the clamping rotating mechanism, the cutting mechanism and the loading mechanism are all installed on the rack; the clamping mechanism comprises a servo motor, a main shaft and a three-jaw chuck, the cutting mechanism comprises a tool rest, a cutting tool, a vertical sliding rail, a horizontal sliding rail and a connecting piece, the vertical sliding rail is arranged above the horizontal sliding rail, the cutting tool is fixedly installed on one side of the tool rest, the loading mechanism comprises guide columns, a follow-up assembly and a loading mold, and the guide columns are symmetrically distributed along the central axis of the main shaft; the follow-up assembly comprises a threaded rod and a movable plate, the loading mold comprises a connector, a loading frame and an angle adjusting block, the loading frame is arranged below the connector, the angle adjusting block is arranged on one side of the loading frame and fixedly connected with the connector, and the method comprises the steps of bar mounting, loading force presetting, bar cutting and loading force adjusting.

The invention discloses a fine four-face planing-milling machine. A rough planing lower plane cutter, a finish planing lower plane cutter and an upper plane cutter of the fine four-face planing-milling machine are sequentially arranged along a wood feed channel from front to back. Follow-up press wheel air cylinders are mounted on a feeding rack cross beam. The ends of piston rods of the follow-uppress wheel air cylinders are connected with follow-up press wheel racks. The follow-up press wheel racks stride over corresponding upper feeding rollers, and follow-up press wheels are rotationallysupported on the follow-up press wheel racks. A follow-up press wheel sliding seat is supported on a front press foot seat in a sliding manner, and follow-up press wheels are rotationally supported atthe lower end of the follow-up press wheel sliding seat. Multiple wood guide side vertical rollers are rotationally mounted at the front end of a machine body through a side vertical roller mountingseat. A guide support is further mounted on the machine body. Multiple guide chain wheels and a guide drive chain wheel are mounted on a guide sliding plate. A guide chain is tensioned on the guide chain wheels and the guide drive chain wheel. A wood guide channel is formed between the guide chain and guide side vertical rollers. According to the fine four-face planing-milling machine, high-speedplaning of wood of various lengths can be achieved, the machining quality is good, and the planing precision is high.

The invention discloses an automatic bending and blanking mechanism. The mechanism comprises a base (1), wherein the base (1) is provided with a reference surface (3) for placing a free end of a pipe (2) and rotating the free end of the pipe (2); the base (1) is provided with a boss (4) higher than the reference surface (3) for positioning the other end of the pipe (2); the boss (4) is provided with an opening (5) for accommodating the end part of the pipe (2); the base (1) is provided with a through hole (6) for sliding the bent pipe (2) in the vertical direction; and the shape of the through hole (6) is consistent with the bending shape of the pipe (2). The invention provides the automatic bending and blanking mechanism with low maintenance cost, simple operation and no need of manual pipe taking.

The invention discloses a main shaft device capable of adjusting the length of a wire bow. The main shaft device capable of adjusting the length of the wire bow comprises a machine frame, two main rollers are arranged on the machine frame, two auxiliary rollers are arranged between the two main rollers, the two ends of each auxiliary roller are sleeved with eccentric mounting bases, the eccentricmounting bases are mounted on the machine frame through a plurality of threaded connecting pieces, the plurality of threaded connecting pieces are distributed in an array around axes of the eccentricmounting bases, and the auxiliary rollers are tangent to and surround the cutting line by rotating the eccentric mounting bases. Compared with the prior art, the eccentric mounting bases and the auxiliary rollers are arranged between the two main rollers, the main shaft device is retrofitted by utilizing the space between the two main rollers, so that the transformation cost is saved, and the convenience of the main shaft device is kept. The length of the wire arch obtained through the setting is the length of the cutting line between the two main rollers, or the length of the cutting line between the two auxiliary rollers, or the length of the cutting line between one main roller and one auxiliary roller, and the length range of the obtained wire arch is wider.