52results about How to "Easy to adjust the intensity" patented technology

The laser interference photo-etching method with holographic optical element is characterized in that: use holographic optical element as beam amplitude division element to divide the laser beam to two beams of almost equal strength and angle divided; reflect to make them intersect; on the intersect overlap area, expose the resister basal plate to produce high resolution grating, form minuteness interference image; holographic optical element is element that can produce tri-beam, quad-beam, or quint-beam, or holographic image produced by computer, or diffraction optic element; laser interference photo-etching system realized aforementioned method comprises a laser of ª™-wave, beam expand collimating device, timer shutter, variable density neutral color filter, holographic optical element, adjustable diaphragm, holophote, optical attenuator, basal plate and electric control roller. As the preparation of holographic optical element is easy, with light weight, and can made with low cost according to different angle to adjust different needs, this invention can decrease size, weight and cost of the system, of far reaching importance and application future.

The present invention is soluble ceramic core for casting of metal cavity, and the soluble ceramic core is made through compounding material, forming and sintering. The material for the soluble ceramic core consists of composite material powder 80-90 wt%, fine silica powder 1-10 wt% and CMC 5-15 wt%, and the composite material powder consists of quartzite in 70-99 wt% and quartz glass in 1-30 wt% mixed together. The soluble ceramic core has low cost and may be leached out from metal casting through setting the casting inside boiling industrial sodium carbonate solution for 0.5-1 hr or setting the casting inside molten alkali for 10-30 min. In addition, the ceramic core has easily regulated strength.

The invention relates to the field of a mobile phone detection device and especially relates to a mobile phone screen detection device. The mobile phone screen detection device comprises a first guide rail and a second guide rail, which are arranged vertically. The first guide rail is equipped with a first driving mechanism for driving the first guide rail to move along the second guide rail; the first guide rail is provided with a base and a second driving mechanism for driving the base to move along the first guide rail; the base is equipped with a touch screen mechanism and a third driving mechanism for driving the touch screen mechanism to move up and down; the touch screen mechanism is provided with an adjusting member for adjusting force applied to the touch screen mechanism; and a fixation mechanism for installing a mobile phone is arranged under the touch screen mechanism. The beneficial effects are that the mobile phone screen detection device is simple in structure and flexible and stable to move; through the two guide rails, omni-directional movement of the detection device is realized, so that click and scribing detection of different positions of the mobile phone is realized, and detection efficiency is high; and through arrangement of the adjusting member, click and scribing strength on the mobile phone screen can be adjusted conveniently, thereby meeting a plurality of test requirements.

A pre-stress pipe pile composite retaining wall structure which is used in civil construction is formed by compositing prefab pre-stress pipe piles and mixture. The retaining wall comprises prefab pre-stress pipe piles (1), and the mixture (2); the mixture (2) is disposed between prefab pre-stress pipe piles disposed side by side and in the pipe cores to connect adjacent prefab pre-stress pipe piles (1) integrally and form a front row composite retaining wall plate (A). An intensity adjusting retainer (B) composed of prefab pre-stress pipe piles (1) and mixture (2) disposed in the prefab pre-stress pipe piles (1) is disposed at the outer side of the composite retaining wall plate (A) which is connected with the intensity adjusting retainer (B) by a coping (3). The mixture material is formed by mixing cement, expansive soil, coal ash and soil body, thereby diameters of the pile pipes can be further contracted, and intensity of the retaining structure can be adjusted flexibly and conveniently.The invention relates to a filling earth quick hit-solid control method comprises following steps: performing a light hit-solid test to the filling earth, determining a linear regression equation of the optimal moisture percentage and the wet density at the optimal attitude according to the obtained relationship between the optimal moisture percentage and the wet density at the optimal attitude; inputting parameters of the linear regression equation into computer control system program, obtaining a quick hit-solid control system representing filling earth property, detecting wet density on site of the filling earth on site, cutting the earth and screening same with a 20 mm screen, dividing the screened earth into three parts, preparing earth samples with three different moisture percentage, performing a standard hit-solid test to obtain three hit-solid wet density.

The invention relates to the field of medical treatment, in particular to a hand gripper and aims to provide a hand gripper capable of strengthening exercising willing of people and effectively controlling exercising intensity to solve technical problems. The technical scheme includes that the hand gripper comprises a bottom plate, a supporting plate, a holding rod, a pressure rod, a soft bag, water, a lower connection pipe, a right cylinder body, a right piston, an upper connection pipe, a left cylinder body, a left piston and the like. The supporting plate is connected to the middle of the left side of the bottom plate, the holding rod is rotationally connected to the right side of the bottom of the supporting plate, the pressure rod is connected to the middle of the right side of the holding rod, the lower connection pipe is connected to the lower portion of the left side of the bottom plate, the lower portion of the left side of the lower connection pipe is provided with an opening, and the soft bag is arranged on the inner lower portion of the lower connection pipe. A patient can repeatedly push the pressure rod side to side to enable reciprocating flowing of water, hand strength of the patient can be improved, blood circulation is enhanced, and rehabilitation of the patient is benefited. Comfort in finger motion of the patient can be improved by water, the willing of thepatient using the hand gripper to exercise can be strengthened, and the patient is enabled to keep going.

Provided is a space-borne laser radar detector calibration system used for realizing calibration of the sensitivity, the linearity and the time response of detectors. The light emitted by an LED with low intensity, stable operation, and easy intensity adjustment is converted to the light irrelevant to the angle by employing an integrating sphere, the light irrelevant to the angle in the integrating sphere is coupled to an optical fiber through a coupling lens, the light in the optical fiber forms a collimated light which is easy for optical path construction through a collimating mirror, the collimated light is spitted by employing a fiber splitter, attenuated, and introduced to each detector, and the calibration of the sensitivity and the linearity is realized; and the calibration of the time response of the detectors requires a light source with ultrafast response time, a laser can generate narrow pulse with the ns-level width, time response information of the detectors can be conveniently extracted by employing the laser for generating the ns level, and the calibration of the time response is realized.

The invention relates to the technology of macromolecular thermoplastic elastomers, and aims to provide a steric compound crystal controlled polylactic acid / hydrogenated polybutadiene supermolecular elastomer. The product is composed of two compounds which are UPy-PLLA-PEB-PLLA-UPy and UPy-PDLA-PEB-PDLA-UPy respectively; in the UPy-PLLA-PEB-PLLA-UPy, chiral carbon in a PLLA block is of a left-handed structure; in the UPy-PDLA-PEB-PDLA-UPy, chiral carbon in a PDLA block is of a right-handed structure; and in the two compounds, the UPy-PLLA-PEB-PLLA-UPy occupies 10% to 90%, and the UPy-PDLA-PEB-PDLA-UPy occupies 90% to 10%. The UPy bonded PLA / PEB supermolecular polymer elastomer is prepared by adopting steric compound crystallized PLLA / PDLA as a hard area and PEB as a soft segment, and the hard segment of the obtained elastomer can be crystallized, and the elastomer is high in melting point, strength and modulus; the content of steric compound crystal can be adjusted by changing the mixed proportion of the two compound, so that the strength, modulus and heat resistance of the elastomer are convenient to control; and by adopting the biology base and biology degradable PLLA and PDLA as the hard segment of the supermolecular elastomer, the pollution generated to the environment is little, the elastomer is green and environment-friendly, and the resources are saved.

The invention relates to a non-contact control device for an extractor hood and a control method. The non-contact control device comprises two sets of infrared gesture sensing devices arranged on a shell of the extractor hood and a detection signal analysis device connected with the two sets of infrared gesture sensing devices, and each infrared gesture sensing device comprises an infrared receiving device and at least one infrared emitting device. The device and the device are characterized in that the distance L between the infrared receiving devices in the two sets of infrared gesture sensing devices satisfies the formula that H*tan(theta)+H*tan(beta)+W_min(L(H*tan(theta)+H*tan(beta)+W_max. Compared with the prior art, the device and method have the advantages that through design of thepositions of the two sets of infrared gesture sensing devices, the user gesture sensing distance does not need to be controlled according to the intensity of infrared emission signals, adjustment ofthe intensity of the infrared emission signals can be facilitated, it is ensured that the infrared receiving device can better detect infrared signals, and meanwhile, mutual interference of gesture operation signals within the maximum sensing distance can be achieved.

The invention relates to an adjustable wrist-ankle needle acupuncture point compression therapy ring. A ring body is provided with a fixing belt which is circular and compression parts; the fixing belt is provided with four vertical positioning lines and through holes; a fixture nut or fixing mount is arranged in each through hole; the compression parts are connected with bolts penetrating the fixture nuts in a threaded manner or embedded on the fixing mounts. The adjustable wrist-ankle needle acupuncture point compression therapy ring has the advantages that the traditional wrist-ankle therapy can be replaced, the therapy using the ring is a purely physical therapy, causes no wound or pain, is free of toxic and side effects, is environment friendly and low carbon and is recyclable, the ring rarely deforms and has a good fixing function, and compression strength can be adjusted as required.

The invention relates to the technical field of rehabilitation equipment, in particular to a muscle strength decline rehabilitation treatment instrument and a use method thereof.The rehabilitation treatment instrument comprises a lumbar muscle rehabilitation mechanism; and the lumbar muscle rehabilitation mechanism comprises a seat plate, a strength adjusting mechanism is arranged on one side of the seat plate, and a leg muscle rehabilitation mechanism is fixedly arranged at the bottom of the seat plate. According to the muscle strength decline rehabilitation treatment instrument, the lumbar muscle rehabilitation mechanism is arranged in the muscle strength decline rehabilitation treatment instrument, when the back of a person leans against the backrest plate and the waist exerts force, the backrest plate can drive a first rotating rod to rotate, and the backrest plate can rotate to the original position under the action of a first extension spring and an air bag in the mechanism, so that lumbar muscle can beexercised repeatedly; by arranging the strength adjusting mechanism in the equipment, strength adjustment can be conveniently conducted on the lumbar muscle rehabilitation mechanism and the leg muscle rehabilitation mechanism at the same time, and adjustment can be conveniently conducted according to the specific conditions of the user.

The invention relates to a high-current over-temperature, over-voltage and electromagnetic three-in-one tripping protector, which comprises a flowing water pipe and an outer frame. Two branch pipes communicated with the flowing water pipe are arranged on the top of the outer wall of the flowing water pipe. The outer frame is arranged on the tops of the two branch pipes. An operating sliding rod is arranged close to the top in the outer frame. A plurality of pressure springs are arranged on the outer wall of the operating sliding rod. A moving contact is arranged on the end part of each pressure spring. A plurality of fixed contacts opposite to the moving contacts are arranged in the outer frame. A fixing elastic piece and a bimetallic strip are arranged close to a left end at the inner bottom of the outer frame. The right end of the fixing elastic piece is connected with support shaft to which a lever is movably connected. A tripping coil is arranged above the right end of the lever. A pressure sensing device fixed in the branch pipe is arranged below the right end of the lever. An adjusting bolt fixed on the lever is supported above the right end of the bimetallic strip. The protector can work under a multi-contact high-current condition, temperature can be accurately and flexibly controlled, and the reliability of a product is improved.

The present invention relates to an apparatus for closing the door slowly and automatically. The conventional door closer has a complicated structure and causes much energy loss because the compressing force of the compression spring in the body is transferred through a gear. However, the present invention can directly get the door closed by the piston rod without passing through a gear, so that the energy loss is little, and a small amount of air is contained in the hydraulic oil in order for the piston and the piston rod to be moved to the left and right hand side. The closing speed of the door can be adjustable by turning a speed adjustment bolt. The installed conventional door closet must be disassembled and reassembled for a force adjustment to adjust the opening and closing force of the door, and it was very difficult to install the conventional door closer due to the adjustment of mounting position to the door and the doorframe and the length of the link. However, the present invention can be simply adjusted for the force adjustment by turning the force adjustment nut when it is installed, and for the installation, it is very easy to install the present invention since the function of the invention works with a force adjustment by turning the force adjustment nut when the invention is fixed to the door and doorframe. The invention can be applied to all kinds of small- or big-sized opening and closing doors including a plastic door, an aluminum door, a wood door, and a steel door to close slowly and automatically.

The invention provides a piece of glove-type abrasive paper with two sides capable of being used and relates to the field of abrasive materials. The glove-type abrasive paper with the two sides capable of being used comprises a coarse abrasive paper layer, a fine abrasive paper layer and a glove body, wherein the coarse abrasive paper layer is arranged on one side of the glove body, and the fine abrasive paper layer is arranged on the other side of the glove body; the coarse abrasive paper layer and the fine abrasive paper layer are tailored according to the shape of the glove body and adhere to the two sides of the glove body respectively with strong glue after being tailored. According to the glove-type abrasive paper with two sides capable of being used, the intensity of positive pressure can be adjusted conveniently so that the size of a friction face can be changed, and the abrasive paper on fingers can be used for processing a small workpiece surface needing to be processed. Meanwhile, trouble for people to replace abrasive paper in the using process can be reduced, waste is reduced, working efficiency can be improved as well, and the probability that a hand is bruised can be reduced.

The invention relates to the technical field of X-ray imaging, in particular to a micro-focusing in-line phase-contrast imaging automatic system with X-ray sources. The micro-focusing in-line phase-contrast imaging automatic system comprises a rotary platform. A sample stage is arranged in the middle of the rotary platform, and more than two micro-focus light source assemblies are arranged on the outer side of the sample stage; the micro-focus light source assemblies are mounted on the rotary platforms; an annular detector is arranged on the outer side of the rotary platform, an image transmitter is connected onto the detector, and image data can be transmitted onto a master controller by the image transmitter; the master controller is used for controlling the rotary platform and the micro-focus light source assemblies and transmitting the received image data into a control terminal; the control terminal is connected with the master controller and is used for transmitting control instructions to the master controller and analyzing and reconstructing the received image data to obtain CT (computerized tomography) images. The micro-focusing in-line phase-contrast imaging automatic system has the advantages that the micro-focusing in-line phase-contrast imaging automatic system is high in scanning imaging speed and can bring convenience for accommodating samples and adjusting the intensity of the X-ray sources and the distances from the X-ray sources to the samples, and accordingly the experiment efficiency can be improved.

The invention relates to the technical field of medical care. The invention further discloses an aerobic training device for cardiac neurological function symptom recovery. The device comprises a bedframe, and a sliding rod is connected into the bed frame in a sliding manner; and the top of the sliding rod is fixedly connected with a baffle. A foot supporting plate is hinged to the interior of the baffle; a limiting rod is movably connected to the interior of the sliding rod; a limiting spring is connected to the outer part of the limiting rod in a sleeving manner; the outer part of the sliding rod is movably connected with an upper toothed rod; the bottom of the upper toothed bar is in engaged connection with a connecting gear; the bed frame, the sliding rods and the baffle plates are matched for use, so that the aerobic training device is connected with the medical bed, a patient can conveniently train at any time, the trouble of moving a critical patient is avoided, the patient isprevented from easily falling down due to insufficient physical strength, the patient can lie down for training, training of the patient is facilitated, the stability of the patient is effectively guaranteed, the safety of the patient is effectively protected, and meanwhile the training effect of the patient is guaranteed.

The invention relates to sport training equipment, in particular to a dragon boat onshore paddle training device. The dragon boat onshore paddle training device includes a base, water sinks, sliding grooves, a plurality of trainers and a control device, the device is characterized in that the water sinks are fixed on both sides of the base, the sliding grooves are fixed above the water sinks, thetraining device includes simulation oars, sliding blocks, pistons, piston rods, hydraulic cylinders and solenoid valves. The hydraulic cylinders are in the shape of a cylinder, the hydraulic cylindersare fixed in the water sinks and submerged by liquid in the water sinks, the solenoid valves are fixed on the rear ends of the hydraulic cylinders and are electrically connected with a control device, the pistons are installed in the hydraulic cylinders and are fixedly connected with the piston rods, the sliding blocks are connected with the insides of the sliding grooves in a clamping mode, thesliding blocks are fixedly connected with the piston rods, the middles of the sliding blocks are hollowed out through processing, and the tail ends of the simulation oars are inserted into the middleshollowed out of the sliding blocks during training. The device has the advantages that it is possible to perform targeted adjustable strength paddle training for dragon boat players indoors.

The invention discloses a novel slide rail structure, comprising an upper slide rail assembly and a lower slide rail assembly; the upper slide rail assembly includes an upper slide rail bracket, a slide rail plastic track and a slide rail roller assembly; the lower slide rail assembly includes a slide Rail bracket, slide rail straight tooth track and slide rail limit post; the slide rail roller assembly includes rollers, roller brackets, springs and U-shaped rings; the slide rail plastic tracks on both sides of the upper slide rail assembly and the upper slide rail The bracket is integrally formed by injection molding; the slide rail roller assembly on the upper slide rail assembly is meshed with the slide rail straight tooth track on the lower slide rail assembly; the rollers on the slide rail roller assembly are located on the slide rail straight tooth track alveolar position on the The application of the slide rail with this new structure on some larger products can ensure that the slide rail can stop at any position during the sliding process, and the adjustment of the sliding force of the slide rail is easier, and the control of the slide rail force is more accurate; the overall structure Simple, practical and easy to promote and use.

The invention relates to the technical field of building materials, and discloses grinding equipment with strength convenient to adjust for building material processing. The equipment comprises a bottom plate, a hydraulic rod is welded at the top of the bottom plate, a dust collector is arranged on the side surface of the hydraulic rod, a top plate is welded at the top of the hydraulic rod, a driving mechanism is arranged at the top of the top plate, and a claiming mechanism is arranged at the top of the bottom plate. According to the grinding equipment with the strength convenient to adjust for building material processing, through cooperative use of a screw rod and sliding sleeves, for plates of different sizes, the distance between the sliding sleeves can be adjusted only by rotating the screw rod, that is, the distance between fixing bases is adjusted, so that the fixing effect of the plates of different sizes can be achieved. Through cooperative use of the grinding mechanism and the driving mechanism, the free switch effect of a first grinding wheel and a second grinding wheel can be achieved according to the requirements for different degree of finishing, so that different grinding strength can be adjusted. The grinding efficiency is improved, the grinding quality is improved, and the application range is widened.

The invention discloses a membrane type high-light inspection platform. The membrane type high-light inspection platform comprises a supporting cabinet and an inspection cabinet fixedly arranged above the supporting cabinet, wherein the inspection cabinet is formed by combining a top plate, a bottom plate, a back plate and two side plates; one surface, facing an inspector, of the inspection cabinet is of a hollow structure; the inspection cabinet is internally provided with a plurality of lamp tubes; the lamp tubes are respectively and independently connected with a control switch; a black coating layer is arranged at the inner side of the back plate of the inspection cabinet. According to the membrane type high-light inspection platform disclosed by the invention, T5 energy-saving lamp tubes are used, so that on the premise of meeting brightness requirements, the loss rate can be reduced, and energy can be saved; the lamp tubes are fixedly arranged in different positions in the upper part, the middle part and the lower part of the membrane type high-light inspection platform, so that a protective membrane can be observed from multiple angles; all lamp tubes are respectively and independently provided with an unique control switch, so that the light intensity can be conveniently regulated; the black coating layer is arranged at the inner side of the back plate of the inspection cabinet, and the black background enables the inspection cabinet to be extremely and especially obvious. The membrane type high-light inspection platform disclosed by the invention is easy in independent operation, can be observed from multiple angles and can change an illumination direction of light.

The invention relates to a nut automatic feeding and marking die. The nut automatic feeding and marking die comprises an upper die base, a clamping wedge, an identification male die, a return wedge, apositioning block, a sliding plate, a lower die base, a clamping block, a rear push rod, a sliding pushing block, a side sliding block, a rear baffle, a linear spring and a material rod; the mold ismainly applied to a small punch press, and a nut is placed at the top opening of the material rod outside a punching machine, so that the operation is safe and reliable; the punch press moves downwards, the return wedge acts on the rear push rod, the slide push block is pressed out, an inclined wedge side pushing clamping block is clamped, the clamping nut is clamped, the punching machine continues to move downwards, a male die contact nut is identified, and marking operation is completed through stamping; and the spring presses the sliding push block, the push-out nut enters the groove, the nut is transversely overlapped and automatically fed, the male die is identified to move upwards to leave the nut, the wedge is clamped to exit, and all the components are classified; and the positioning accuracy of a workpiece is accurate, the identification male die is durable and not prone to being damaged, the calibrated nut is not easy to deform, and the die is easy to install and debug.

The invention discloses a novel ejection type toy gun. The novel ejection type toy gun comprises a gun body and marbles, wherein a ballistic trajectory and a ballistic pushing trajectory are formed in a pipe body of the gun body, the ballistic trajectory and the ballistic pushing trajectory communicate in a butt joint mode, the inner wall of the ballistic trajectory is sleeved with sleeves in a screwed mode through internal threads, the inner surfaces and the outer surfaces of the sleeves are both provided with threads, the multiple sleeves are connected in a sleeved mode through threads in an overlapped mode, the marbles are arranged on the inner sides of the sleeves, a first pushing block is arranged in the ballistic pushing trajectory, and a pushing rod is fixedly connected to the side, away from the ballistic pushing trajectory, of the first pushing block. According to the novel ejection type toy gun, the marbles are launched in a pistol mode, so that the interestingness of the playing method is greatly improved, and even the young or middle-aged and other elderly people are interested in use, so that the market of the toy is expanded; and through the design of structures such as a spring plate and an L-shaped push arm, the elastic pushing force and progress of the spring to a second push block can be conveniently adjusted, so that the shooting range of the marbles is adjusted.

The invention discloses an intelligent joint rehabilitation robot. The intelligent joint rehabilitation robot comprises an integrated rehabilitation device and a monitoring device, and the integratedrehabilitation device is provided with an electric pedal and an electric hand rocker; and the monitoring system comprises an upper thermal imager, a lower thermal imager and a controller. By monitoring temperatures of muscle groups of upper and lower limb joints of rehabilitation personnel in real time, a resistance strength is controlled according to existing upper and lower limb assistance strength programs, an optimized strength adjustment is realized, functions of upper and lower limb joints can be quickly recovered, a rehabilitation efficiency is improved, a help of professionals is not needed, the labor cost is saved, and the intelligent joint rehabilitation robot has an attractive appearance and a small occupied area.

The invention discloses an efficient environment-friendly energy-saving steel structure column, comprising a square steel column, the interior of the steel column is hollow; the upper and lower bottomsurfaces of the steel column are sealed; the front side of the steel column is open; a cover plate covers an opening in the front side of the steel column; the cover plate is fixedly connected with the steel column body through a bolt; a plurality of sets of fixing strips which are vertically spaced are fixedly welded to the left side and the right side of the interior of the steel column, each set of fixing strips comprises two fixing strips which are distributed at intervals, the interval formed between each two fixing strips is a clamping groove used for clamping a horizontally-placed steel plate, and clamping blocks are integrally manufactured on the left side and the right side of each steel plate and used for being fixed to the corresponding clamping groove in a matched mode. Through the detachable distribution of the steel column and the steel plates, the steel structure is convenient to bend and recycle, and the strength of the steel structure is convenient to adjust by adjusting the number of the steel plates.

The invention discloses a medical mammary gland massage device. The medical mammary gland massage device comprises a housing, the housing is in a semi-circular shape, one side of the housing is fixedly connected with a rubber protection pad, a passage is communicated with the upper portion of the housing, long holes are formed on both sides of the passage, a support block is fixedly connected to the inner bottom of the passage, a motor is arranged inside the passage, a slide block is fixedly connected to the two sides of the motor, the slider is slidably connected with the long hole, a springis fixedly connected with the motor, the lower end of the spring is fixedly connected with the support block, an output end of the motor is connected with a support frame through a shaft coupling, a ball body is mounted on the support frame, a through hole is formed on an outer side of the housing, and an infrared lamp is mounted on the through hole. The medical mammary gland massage device has the advantages of reasonable design and convenient use, saves time and labor, scientific performance and convenience, safety and efficiency, effectiveness, complete functions, and comfortable feeling while performs mammary gland massage nursing, reduces the difficulty of operation, and is suitable for household use.

The invention discloses a cut-off device for dry batterycarbon rod processing. The cut-off device for dry batterycarbon rod processing comprises a base, the top of the base is fixedly connected with asupporting frame, the top of the supporting frame is fixedly connected with an air cylinder, an ejector rod of the air cylinder penetrates through the supporting frame and is fixedly connected with acutter, the top of the base is in sliding connection with a carbon rod body located at the bottom of the cutter, a roller located on the top of the carbon rod body is movably installed on the top ofthe base, the bottom of the roller is movably connected with the top of the carbon rod body, and a first connecting rod and a second connecting rod are fixedly connected to the two sides of the carbonrod body separately. According to the cut-off device for dry batterycarbon rod processing, a pressure spring, a drive block, a drive rod, a drive sleeve, the first connecting rod and the second connecting rod are arranged for providing thrust for the roller, carbon rods can be compressed, the height of the roller can be adjusted according to the sizes of the carbon rods, and the purpose of adjusting the height of a transfer device is achieved without replacing the cut-off device, so that the processing cost is reduced and the cut-off device is convenient to use by people.

The invention discloses a chain track quenching device controlling quenching strength based on a ventilation quantity. A cooling cylinder is included, and the left and right sides of the cooling cylinder are each connected with a supporting plate; driving motors are installed on the supporting plates, and the front ends of the driving motors sequentially penetrate through extruding frames and thecooling cylinder through worms; rotors are connected to the portions, located in the extruding frames, of the worms; gas conveying hoses penetrate through the positions between the rotors and the extruding frames, and the two ends of each gas conveying hose both penetrate through the corresponding extruding frame; the gas conveying hoses are connected to gas conveying branch pipes which are arranged on a first gas conveying main pipe; a one-way valve is installed on the first gas conveying main pipe on which a flow meter is arranged; the lower end of the first gas conveying main pipe penetrates through the cooling cylinder and is connected with a second gas conveying main pipe; and a sealed plate is connected to the second gas conveying main pipe. The chain track quenching device controlling quenching strength based on the ventilation quantity can control the strength of quenching by controlling the ventilation quantity, and therefore the strength of a chain track after being quenchedcan be conveniently controlled.