84results about How to "Accurate distance adjustment" patented technology

The invention relates to a welding device, in particular to an automatic petroleum pipeline circular seam welding device. The automatic petroleum pipeline circular seam welding device comprises a pipeline clamping system, a power and control system, a welding gun clamping system and a welding gun. The pipeline clamping system is installed on a petroleum pipeline, the power and control system is installed on the pipeline clamping system, the welding gun clamping system is installed on the power and control system, and the welding gun is installed on the welding gun clamping system. The automatic petroleum pipeline circular seam welding device is directly installed on the petroleum pipeline in need of welding, the welding gun is driven to act through gear transmission so as to complete the circular seam welding process. The automatic petroleum pipeline circular seam welding device has the advantages of being simple and compact in structure, small in size, low in cost and high in automated degree. Welding can be stopped automatically through a contact type travel switch when a half circle is welded, the welding process is divided into two steps and completed through welding of the two half circles, and thus welding quality is improved. Spiral transmission is adopted for the welding gun clamping system to adjust the position of the welding gun, the distance between the welding gun and the petroleum pipeline can be adjusted precisely, and the welding quality of a circular seam is further improved.

The invention relates to an automatically-moving three-dimensional seedbed system with the adjustable light transmittance. The automatically-moving three-dimensional seedbed system comprises a three-dimensional frame body, linear guide rails, seedbed conveying units, single seedbeds and sensing and positioning devices. The linear guide rails are arranged on the three-dimensional frame body in a layered mode through supporting plates. Each seedbed conveying unit comprises two side plates arranged in parallel, wherein the distance between the two side plates is regulated according to the depth by which corresponding interval insertion plate inner plates are inserted into corresponding interval insertion plate outer plates, wheels used for rolling to convey the corresponding single seedbed are arranged on the inner sides of the side plates, and the side plates are connected to the corresponding linear guide rail in a sliding mode through slide blocks. The sensing and positioning devices are arranged on the three-dimensional frame body, the seedbed conveying units and the single seedbeds to position the single seedbeds. Compared with the prior art, the seedbeds can be moved to the assigned seedbed positions, the positions of the seedbeds can be automatically adjusted according to the growth condition of plants, the illumination receiving rate of the seedbeds is increased, and the automatically-moving three-dimensional seedbed system conforms to the tendency that traditional greenhouses are developed towards large-scale plant factories.

The invention relates to a low-voltage arc fault test and analysis system. The low-voltage arc fault test and analysis system is characterized by comprising an automatic arc generation module, a sampling module, a measurement module and a feature analysis and test module, wherein the automatic arc generation module is connected with load and used for generating a corresponding arc fault; the sampling module is used for receiving an arc fault signal transmitted by the automatic arc generation module, and conditioning and collecting the arc fault signal; the measurement module is used for conveying and measuring the arc fault signal, and transmitting he arc fault signal to the feature analysis and test module; the feature analysis and test module is used for achieving visual feature transformation and analysis on the arc fault signal and achieving a test function of an arc-fault circuit-interrupter (AFCI). By adopting the low-voltage arc fault test and analysis system, automatic generation of the required arc fault signal is facilitated, and visual analysis of fault features and output test of the fault signal are achieved.

The invention provides a distance adjusting device and an LED display device with the same. The distance adjusting device comprises a shell, a sliding block (10) and a transmission mechanism, wherein the shell is provided with an inner cavity and an opening face communicated with the inner cavity, the sliding block is arranged at the opening face and is movably arranged in the inner cavity in the direction perpendicular to the opening face, the transmission mechanism is connected with the sliding block (10) in a driving mode to drive the sliding block (10) to move in the direction perpendicular to the opening face. The distance adjusting device achieves the accurate adjustment of the distance between two adjacent installing boards, the gaps between display modules during the splicing process of a display screen are more uniform, and the displaying effect of the display screen is clearer.

The invention relates to a cord winding and partitioning machine. The machine comprises a base, and is characterized in that: both the front side and the rear side of the base are provided with a first sliding rail matched with an extension socket; a screw nut pair mechanism for driving the extension socket to move right and left on the first sliding rail is arranged on the base; a second sliding rail and a driven wheel seat matched with the second sliding rail are arranged on the upper side of the extension socket; a groove roller is arranged on the driven wheel seat; a retractable cylinder for driving the driven wheel seat to move right and left on the second sliding rail is arranged on the extension socket; a main shaft box with a numerical control system is arranged at the right end of the base; a smooth roller driven by a servo motor is arranged on the main shaft box; a partitioning device is arranged on the main shaft box; a compression roller device is arranged on the main shaft box; and the screw nut pair mechanism, the retractable cylinder, the servo motor and a compaction cylinder are electrically connected with the numerical control system. The cord winding and partitioning machine makes a cord wound and ranked stably, has a controllable gap, makes the cord patched and pre-partitioned conveniently, is convenient to operate and has high production efficiency.

The invention relates to a correcting device of an ambient light sensor, which comprises a light source, an optical splitter, a first light pipe, at least one second light pipe and at least one vernier device, wherein the light source is used for outputting light beams with different illuminance; the optical splitter is provided with an input face and an output face; the two ends of the first light pipe are respectively coupled to the light source and the input face of the optical splitter, and the first light pipe is used for transmitting the light beams emitted by the light source to the optical splitter; each second light pipe comprises an inlet end and an outlet end, and the inlet end of each second light pipe is coupled to the output face of the optical splitter; and the outlet end of each second light pipe can be movably arranged in the corresponding vernier device. The correcting device of the ambient light sensor can reduce the time required for correcting the ambient light sensor.

The invention provides a bean grinding device. The bean grinding device comprises a grinding module and an adjusting module, wherein the grinding module comprises a bean grinding chamber, an externalgrinding wheel and an internal grinding wheel, and the external grinding wheel and the internal grinding wheel are arranged inside the bean grinding chamber; the adjusting module is composed of at least two stages of adjusting mechanisms composed of a first adjusting mechanism and a second adjusting mechanism, the first adjusting mechanism is connected with the bean grinding chamber through a track, the second adjusting mechanism is connected with the external grinding wheel through a track, and the first adjusting mechanism and the second adjusting mechanism are axially fixed in position relative to each other and used for adjusting the distance between the external grinding wheel and the internal grinding wheel. The invention also provides a coffee bean grinder comprising the bean grinding device.

The invention discloses a shifting device used for an industrial welding robot. The shifting device comprises a base, and a drive box and a driven box which are mounted on the base. The drive box is internally provided with a servo motor and a reducer connected to the power output end of the servo motor. The power output end of the reducer is connected with a drive turnplate. The driven box is provided with a driven turnplate corresponding to the drive turnplate. The shifting device further comprises a moving system. The moving system comprises a power motor, a lead screw, feed screw nuts anda location bearing. The power motor is fixed to the base and located at the rear side of the driven box. One end of the lead screw is connected with the power output end of the power motor. The otherend of the lead screw is fixed to the base through the location bearing. The feed screw nuts are fixed to the lower portion of the driven box. The lead screw penetrates through the feed screw nuts inthe direction perpendicular to the direction of the drive box and the driven box, and rotational motion of the lead screw is converted into horizontal moving of the feed screw nuts. Work staff can accurately adjust the distance between the drive box and the driven box according to needs, and accordingly, the shifting device adapts to welding requirements of workpieces of different models.

The invention provides a tunable filter, comprising two fixing members, two fiber connectors, and a piezoceramic. The fixing member penetrates and is provided with mounting through holes along a direction of an optical-path. The fiber optic connector comprises a connecting shell, a fiber core, and a fiber insertion core. The fiber insertion core is fixedly arranged on the connecting shell. The fiber core penetrates the connecting shell along the direction of the optical-path and extends into the fiber insertion core. The connecting shell is fixedly mounted in the mounting through hole. The piezoceramic penetrates and is provided with a receiving through hole along the direction of the optical-path. The piezoceramic is connected between the fixing members along the direction of the optical-path. The mounting through hole communicates with the receiving through hole in sequence. The exit ends of the two fiber insertion cores are oppositely arranged in the receiving through holes. The piezoceramic is connected between the fixing members, and the exit end of the first fiber insertion core and the exit end of the second fiber insertion core are oppositely arranged in the receiving through holes, then an F-P resonant cavity is formed, and the distance between the fixing members is finely adjusted by using piezoelectric effect characteristics of the piezoceramic, so that the filter can precisely adjust the filtering.

The invention discloses a precision control type three-roller grinding machine. The precision control type three-roller grinding machine comprises a machine frame, vertical plates, and a front roller, a middle roller, a rear roller, a roller transmission part, a roller spacing control part and a roller floating gap eliminating part which are arranged on the machine frame and the vertical plates, wherein the roller spacing control part comprises a front power source, a front spacing adjusting cam, a second front bearing, a front spacing adjusting swinging arm, a front spacing adjusting rotating pin, a front adjusting screw and a front tension spring; the front spacing adjusting rotating pin and the front spacing adjusting swinging arm form a rotating pair; the front adjusting screw and the front spacing adjusting swinging arm form a screw thread pair; and the front power source drives the front spacing adjusting cam to rotate to push the front spacing adjusting swinging arm to rotate so as to adjust roller spacing. The precision control type three-roller grinding machine is precise in spacing adjustment and is time-saving and labour-saving by utilizing the roller spacing control part with a lever and the roller floating gap eliminating part.

The invention relates to an air pump water heater simultaneously provided with a water storage box and a water gaining box. The air pump water pump heater simultaneously provided with the water storage box and the water gaining box comprises a water heater body, the water storage box and the water gaining box. The water storage box comprises a common box body, inserting outer pipes, fixing hanging lugs and an automatic bottom plug. The water gaining box comprises a standby box body, water inlet inserting drums, a water level adjusting device, a water speed adjusting device and a water outlet valve. According to the air pump water heater simultaneously provided with the water storage box and the water gaining box, the water gaining box can take and use hot water in the water storage box for other uses, normal using of the water storage box is not influenced, meanwhile, functions of the air pump water heater are greatly expanded, assembly and disassembly of the water gaining box are convenient, the water gaining box can slightly rotate a first rotating dish, the maximum water storage amount of the water storage box can be adjusted, the water gaining box can slightly rotate a second rotating dish, the water flow speed can be adjusted, and the water storage box can adjust damping during rising of a sealed plug.

The invention discloses a roller device and is applied to the field of keel production. The roller device comprises a left forming roller, a right forming roller, an upper roller shaft, a lower roller shaft, a left forming rack, a right forming rack and a pedestal, wherein a left-upper roller and a left-lower roller of the left forming roller are respectively arranged on the left sides of the upper roller shaft and the lower roller shaft; the left ends of the upper roller shaft and the lower roller shaft are connected with the pedestal via the left forming rack; the right sides of the upper roller shaft and the lower roller shaft are both provided with adjusting sleeves; a right-upper roller and a right-lower roller of the right forming roller are respectively covered with the adjusting sleeves; the right ends of the upper roller shaft and the lower roller shaft are connected with the right forming rack via the adjusting sleeves; and the right forming rack is movably connected with the pedestal along an axial direction. Therefore, the right forming rack moves along an axial direction to drive the adjusting sleeves and the right forming roller thereon to axially move; and a distance between the left forming roller and the right forming roller can be changed, and the roller device can be suitable for manufacture of keels of various sizes; and production device cost can be reduced.

The invention discloses an electrostatic desalination testing device. The electrostatic desalination testing device comprises a direct-current voltage-stablizing power supply, a magnetic force heating stirrer, a conductivity determinator, a liquid storage container and an electrode module, wherein the upper part of the liquid storage container is open and the liquid storage container is filled with a water sample; the liquid storage container is put on the magnetic force heating stirrer. According to the testing method of the electrostatic desalination testing device, the interval between two electrode plates is adjusted by a telescopic rod; the voltage is regulated by the direct-current voltage-stablizing power supply; the magnetic force heating stirrer is adopted so that the water sample fully flows in the liquid storage container; the conductivity determinator monitors the conductivity of the water sample in the liquid storage container, and a curve graph which shows the change of the conductivity with time is drawn, thereby obtaining the optimal voltage and the optimal interval between the electrode plates. The electrostatic desalination testing device is simple in structure, is simple and convenient to operate, and is good in adsorption of the electrode module, and can be used for measuring the optimal voltage and the optimal interval between the electrode plates under the optimal desalination effect by regulating the applied voltage and the interval between the electrode plates.

The invention discloses a street lamp pole mounting device and a mounting method thereof. The street lamp pole mounting device comprises a base, a rotary seat, a sliding seat, a first driving device,a second driving device and a clamping device, wherein the base is horizontally arranged in the front-back direction; the rotary seat is horizontally arranged on the base in the front-back direction;the front end of the rotary seat is rotatably connected with the front end of the base; the first driving device is mounted on the base, and the driving end of the first driving device is in transmission connection with the rotary seat; the sliding seat is mounted on the rotary seat in a sliding manner; the second driving device is mounted on the base, and the driving end of the second driving device is in transmission connection with the sliding seat; the clamping device is arranged on the sliding seat; a connecting piece is arranged at the front end of the base; and a through groove penetrating through the connecting piece up and down is formed in the connecting piece, is used for being connected with any screw rod on an anchor cage in an inserting or hanging manner and is compressed andfixed on the anchor cage through a corresponding levelling nut. The street lamp pole mounting device is simple in structure, convenient to use and high in mounting efficiency.

The invention discloses a polymer film production slitting process. The process comprises the steps that S1, equipment inspection is conducted, specifically, the operation condition of polymer film production slitting equipment is inspected before the equipment is started; S2, sleeve roll positioning is conducted, specifically, a polymer film is positioned through an unwinding limiting mechanism, and a winding reel core is positioned through a winding limiting mechanism; S3, cutter distance adjustment is conducted, specifically, cutters are moved, and a distance between the two adjacent cutters is adjusted to a specified width; S4, the equipment is started, specifically, a motor is started, and the polymer film is slit; and S5, discharging and storage is conducted, specifically, the slit polymer film is taken down from the equipment to be stored for later use. According to the polymer film production slitting process, the limiting mechanisms are arranged at the tail ends of the winding reel core and an unwinding reel core correspondingly, deviation of the reel cores is avoided, it is guaranteed that the polymer film is wound in order, the limiting positions of the limiting mechanisms can be adjusted to adapt to the reel cores with different widths, and the reel cores can be conveniently mounted or dismounted.

The invention discloses a fixing device for hardware part production and processing. The device comprises a base, a footstock, three fixing mechanisms, a fine adjustment mechanism and auxiliary mechanisms, wherein the footstock is arranged above the base; each fixing mechanism comprises an upper fixing device and a lower support mechanism; the upper fixing devices are fixedly connected with the footstock; the lower support mechanisms are arranged at the top of the base; the three fixing mechanism are equidistantly arranged on the base and the footstock; the base is connected with the footstockthrough the fine adjustment mechanism; and the auxiliary mechanisms are symmetrically arranged at two sides of the fine adjustment mechanism. The fixing device for hardware part production and processing is capable of fixing hardware parts with different shapes according to machining demands, and fixing and processing a plurality of hardware parts with different styles, so that the time is savedand the efficiency is improved.

The invention discloses a radial arc voltage heightening device of a numerical control plasma cutting machine. The device comprises an arc voltage detecting unit, a signal processing unit, a radial heightening device of cutting gun, a control circuit and a system power supply, wherein the arc voltage detecting unit is connected with the radial heightening device of cutting gun through the signal processing unit, and the control circuit is connected with the radial heightening device of cutting gun through a solenoid valve; the radial heightening device of cutting gun comprises a cutting gun, an elastic component and a lifting rod, one end of the elastic component is fixed, and the other end of the elastic component is connected with the upper end of the cutting gun; and a projection with a bending part is arranged on the upper end of the cutting gun, and a hook is arranged on the tail end of the lifting rod. After utilizing the technical scheme, the distance between the cutting gun and the workpiece is precisely adjusted, and the heightening device is simple in structure, high in automation degree and convenient to operate.

The invention discloses a convenient-to-clamp quality detection device for flax textile production in the technical field of flax textile production. The quality detection device comprises a workbenchwith a hollow structure, wherein a control box and a motor are mounted on the outer walls of the left and right sides of the workbench respectively; two nuts I are symmetrically mounted on the outerwalls of the left and right sides of a bidirectional screw; four lighting devices are symmetrically mounted on the top of the workbench; a thimble is mounted at the bottom end of an electric telescopic rod II. The device is simple to operate, realizes adjustment of the height of the workbench, and can be conveniently operated by workers of different heights, clamping devices can fix flax textile bodies of different widths conveniently, workers can conveniently check all flaws and holes in the flax textile bodies clearly by irradiation of lamp tubes, the stretching, topping and expansion conditions that the joints of the flax textile body can be known by the workers conveniently, and whether quality of the produced flax textile bodies is up to standard can be judged conveniently.

The invention discloses an elevating mechanism for the operation of laser printing of stereo images. The elevating mechanism comprises a stepping motor, a worm and gear speed reducer, a vertical type linear track, a chain and chain wheel device, a laser film clip platform, roller devices and travel switch devices, wherein the stepping motor is used for outputting power; the worm and gear speed reducer is used for controlling speed and self-locking; the vertical type linear track is used for guiding the laser film clip platform to slide; the chain and chain wheel device is used for dragging the laser film clip platform to move; the roller devices are mounted on the laser film clip platform and are used for rolling on the vertical type linear track; the travel switch devices are arranged on the vertical type linear track and are used for controlling the moving limit of the laser film clip platform. The elevating mechanism disclosed by the invention is applicable to stereo image laser printing operation equipment According to the mechanism, the distance between a laser film clip and exposure materials is adjusted by moving the position of the laser film clip platform up and down, so that the exposure precision of the exposure materials with different breadths can be accurately controlled without replacing a focusing lens.

The invention relates to the field of honeycomb plate production, in particular to a honeycomb plate production and forming composite processing machine which comprises a clamping and fixing mechanism and a pressing mechanism, the clamping and fixing mechanism is arranged on the ground, and the pressing mechanism is arranged at the left end of the clamping and fixing mechanism. The clamping and fixing mechanism comprises a vertical frame, a disc, a first electric push rod, a clamping plate, a limiting block, a stop block, a connecting plate, a first electric sliding block, a lug plate, a supporting plate, a supporting rod, a connecting plate, a bottom block and a second electric sliding block. By adopting the design concept of multidirectional limiting, the whole processing machine can realize multidirectional clamping and fixing of a honeycomb core, so that the honeycomb core is prevented from shifting or deforming, the function of turning over the honeycomb core so that the honeycomb core can be subjected to double-faced composite panel treatment is also achieved, meanwhile, the arranged pressing mechanism can press a panel and the honeycomb core, then the purpose of improving the bonding compactness between the honeycomb core and the panel is achieved, and the composite forming quality of the honeycomb plate is improved.

The invention relates to the technical field of oil and gas pipeline spray repairing, in particular to a powder booth regulating device. The device comprises a feeding mounting base, a powder booth and a first radial regulating mechanism. The feeding mounting base comprises a fixed block, a powder booth connecting plate, an air cylinder connecting plate, an air cylinder, a first polish rod, a first bearing and a first regulating clip, the fixed block is fixed to the air cylinder connecting plate, a cylinder barrel of the air cylinder is fixed to the air cylinder connecting plate, and one end of a piston rod of the air cylinder is fixed to the powder booth connecting plate; the powder booth is fixed to the powder booth connecting plate, the first bearing is fixed to one side, where the cylinder barrel of the air cylinder is located, of the air cylinder connecting plate, the first polish rod penetrates through the first bearing, and the first end of the first polish rod is fixed to the powder booth connecting plate; and the first regulating clip is arranged at the second end of the first polish rod, the first radial regulating mechanism is arranged on the position, between the first bearing and the first regulating clip, of the first polish rod in a sleeving mode, and the first radial regulating mechanism comprises a first regulating nut and a first regulating thread sleeve. The powder booth regulating device improves the spraying accuracy.

The invention discloses a selective laser melting forming type two-way reciprocating powder paving device and a control method thereof. The device comprises a powder supplying assembling body, a powder paving assembling body, a dust-free linear conveying assembly, a left cutter aligning instrument, a right cutter aligning instrument and a base platform, wherein the powder paving assembling body comprises a left scraping knife, a right scraping knife, a left ranging instrument, a right ranging instrument, a left scraping knife height adjusting assembly, a right scraping knife height adjusting assembly and a powder storing area; the powder supplying assembling body is used for supplying powder to the powder storing area of the powder paving assembling body; the dust-free linear conveying assembly is positioned at the side edge of the base platform; the powder paving assembling body can leftwards and rightwards move along the dust-free linear conveying assembly; and a base plate is arranged on the base platform. The control method is applicable to the two-way powder paving device. With the adoption of the device and the control method, the height of the scraping knives at two sides can be adjusted and controlled in real time, so that the consistency of effect of paving powder twice can be ensured.

The invention discloses a giant magnetostrictive drive grinding machine which comprises at least a pair of grinding heads, a fixing bracket, an electric slip ring fixing frame, a hollow shaft, an electric slip ring and a control system, wherein the electric slip ring fixing frame is mounted on the inner side of the fixing bracket; the hollow shaft is mounted on the fixing bracket through a bearing; the stator part of the electric slip ring is mounted on the electric slip ring fixing frame; the rotor part of the electric slip ring sleeves the hollow shaft and is connected with a fixing disc; the fixing disc is mounted at the other end of the hollow shaft as well as connected with a motor and a transmission mechanism; the grinding heads are driven by a micro stepper motor; the micro steppermotor and the grinding heads are slidably mounted on the fixing disc; and at least a pair of giant magnetostrictive mechanisms is arranged on the fixing disc and used for driving the grinding heads, so that the distance between the grinding heads can be adjusted. Through the giant magnetostrictive drive grinding machine, a workpiece can be circumferentially grinded under the circumstance that theworkpiece does not rotate; the giant magnetostrictive drive grinding machine is applicable to the circumstance that a long and thin workpiece needs to be circumferentially grinded or cannot rotate; and the grinding machining precision is high.

The invention discloses a novel multi-shaft drilling mechanism for a steel bar connecting structural member. The novel multi-shaft drilling mechanism comprises a rack; a working table plate is fixed to the upper side of the rack; a supporting frame is installed on the upper side of the working table plate; a distance adjusting mechanism is installed in the supporting frame; drilling assemblies are arranged on the distance adjusting mechanism; the number of the drilling assemblies is two; each drilling assembly comprises a driving motor, a transmission box and two drill bit mechanisms; the two drill bit mechanisms are arranged at the bottom of the corresponding transmission box side by side; each drill bit mechanism comprises a rotating shaft; and a connecting block is fixed to the lower end of each rotating shaft; and a drill bit is arranged at the bottom of each connecting block. The distance between the two drilling assemblies can be accurately adjusted; the drilling effect is improved; the positions, needing to be drilled, of the steel bar connecting structural member can be positioned through first positioning protruding strips on the front sides of containing bases and second positioning protruding strips on the front sides of lower pressing blocks; and the drilling accuracy is further improved.

The invention discloses a manual static headspace sample injection device of an injector and a manual static headspace sample injection method of the injector. The device comprises a slope structure which is provided with an inclined plane with a set inclination angle; a sliding block which is arranged on the inclined plane through a sliding rail, wherein the sliding rail is parallel to the inclined direction of the inclined plane; a first supporting plate which is arranged at the uppermost end of the inclined plane, wherein an upper limiting structure is arranged on the first supporting plate; a second supporting plate which is arranged at the lowermost end of the inclined plane, wherein a lower limiting structure is arranged on the second supporting plate; a stand column which is arranged at one side of the inclined plane, wherein an upper base plate and a lower base plate are installed on the stand column, and through grooves are formed in the upper base plate and the lower base plate. The upper base plate, the lower base plate, the upper surface of the sliding block and the bottom of the slope structure are parallel, and the distance between the upper base plate and the lower base plate is equal to the length of a sampling injector sleeve. The device can improve the accuracy of single measurement and the efficiency of batch measurement.

The invention discloses a laser cutting machine laser head protection device capable of automatically focusing, and belongs to the field of laser cutting. The device comprises a laser head, a laser range finder, a hydraulic lifting device, an annular induction device, an inner shell, an embedded annular pressure sensor, a balance spring, a protective outer shell, an annular laser scanner, a vertical lifting device, a fixed straight rod and a horizontal displacement device; the laser head is matched with the inner shell; and the bottom of the laser head is combined with the hydraulic lifting device; the embedded annular pressure sensor is arranged in the inner shell; the balance spring is arranged on the outer circumference of the inner shell; and the annular laser scanner is arranged at the bottom of the outer shell. By adopting the laser cutting machine laser head protection device, the laser head is protected; automatic focusing can be achieved according to a set distance; inaccuracy of manual focusing is avoided; the problem of cutting failure caused by substandard material quality can be avoided; it can be guaranteed that the laser head is prevented from being collided by the outside; and meanwhile the cutting precision and efficiency are improved.

The easy-to-adjust durable welding contact tube is composed of a main body (100) and an adjusting sleeve (200), a connecting part (105) is arranged at the rear end of the main body (100), a cylindrical hole for a welding wire to pass through is formed in the main body (100), conductive blocks (125) are arranged at the front end of the main body (100), a gap is formed between the conductive blocks (125), the adjusting sleeve (200) is provided with a cavity for containing the conductive blocks (125), an adjusting hole (210) and a guide hole (220) are formed in the front end of the adjusting sleeve (200), and the cylindrical hole of the main body (100) and the guide hole (220) are located on the same axis. The conductive block (125) or the adjusting hole (210) has taper and is used for changing the direction of force, the main body thread (115) is meshed with the adjusting sleeve thread (205), the adjusting sleeve (200) and the main body (100) move relatively, namely the main body (100) or the adjusting sleeve (200) is twisted to enable the conductive block (125) and the adjusting hole (210) to move oppositely, external force is applied to the conductive block (125), and the conductive block (125) is folded inwards. The force generated after the spring (400) is compressed can be used for folding the conductive block (125).