38results about How to "Avoid moving up and down" patented technology

The invention relates to the technical field of construction machinery, in particular to a novel building material template cleaning device, which comprises a conveying table, a forward rotation cleaning mechanism, a reverse rotation cleaning mechanism, an upper surface flushing mechanism and a lower surface flushing mechanism, wherein the forward rotation cleaning mechanism and the reverse rotation cleaning mechanism are arranged on the conveying table; a building material template is conveyed through the conveying table; the upper surface flushing mechanism is arranged above the building material template; the lower surface flushing mechanism is arranged below the building material template; a sticky matter on the building material template can be effectively cleaned, and a physical means is used for cleaning, so that the chemical pollution is avoided, the cleaning efficiency is improved, and the production cost is reduced.

The invention relates to a waste cotton cleaning system based on a non-impact reversing mechanism. The waste cotton cleaning system comprises a frame, a cleaning device, the non-impact reversing mechanism, and driving mechanisms. The cleaning device is mounted on the frame of a textile unit through a guide rail and is driven by a cleaning driving mechanism to perform suction-blow cleaning; the cleaning device can be driven by a displacement driving mechanism to directly move along the extension direction of the guide rail; the cleaning device can be reversed to and fro through fitting of the displacement driving mechanism and the non-impact mechanism. The waste cotton cleaning system has the advantages that no impact occurs during reversing, the independent motor for driving a fan needs only 0.55Kw, the independent motor for driving the cleaning device in to-and-fro movement needs only 0.12Kw, and the need for motor power is greatly lowered.

The invention discloses a blowout preventer for wellhead sealing, and relates to the technical field of oil exploitation, in particular to the blowout preventer for wellhead sealing. The blowout preventer for wellhead sealing comprises a blowout preventer body and a central pipe hole; a sliding chute is arranged in the blowout preventer body, and a left side sealing block and a right side sealing block are clamped in the sliding chute; a hydraulic cylinder is fixedly installed on the left side of the blowout preventer body; a push plate is arranged in the hydraulic cylinder; and a push rod is fixedly connected to the middle of the push plate in a sleeving mode. According to the blowout preventer for wellhead sealing, through matched use of a groove and a protruding block, when the left side sealing block and the right side sealing block are combined together, the protruding block is just inserted into the groove, the contact area of the left side sealing block and the right side sealing block is increased, and the interaction force between the left side sealing block and the right side sealing block is improved; and the left sealing block and the right sealing block are prevented from moving up and down, and the sealing and blowout preventing effect is enhanced.

The invention discloses a probe and a connector suitable for a large-current high-speed signal testing. The probe comprises a first contact part, a first elastic part, a connecting part, a second elastic part and a second contact part, the first elastic part comprises a first linear part, a first bent part and a second linear part; the first linear part extends in the direction perpendicular to the axial direction, and one end of the first linear part is connected with the other end of the first contact part; the second linear part extends in the direction perpendicular to the axial direction,and one end of the second linear part is connected with the connecting part; the first bending part is of a C-like structure, one end of the first bending part is connected with the first linear part, and the other end is connected with the second linear part; the distance between the first linear part and the second linear part is smaller than the maximum inner diameter of the first bent part inthe axial direction; the connecting part is used for connecting the second linear part and the second elastic part; according to the probe provided by the invention, the elastic force of the elasticpart can be reduced while the cross sectional area is increased, and the probe and a contact object thereof are prevented from being damaged due to overlarge elastic force / clamping force.

The invention discloses an efficient mixing device for beverage processing. The device comprises a bottom plate, a fixing support is fixedly connected to the right side of the top of the bottom plate, a sliding groove is formed in the left side of the top of the bottom plate, a mixing tank is arranged on the left side of the top of the bottom plate, mobile supporting legs are fixedly connected to the bottom of the mixing tank, and the bottoms of the mobile supporting legs extend to the interior of the sliding groove. According to the efficient mixing device for beverage processing, through arrangement and cooperation of the bottom plate, the fixing support, the sliding groove, the mixing tank, the mobile supporting legs, sliding wheels, a fixing plate, a mobile plate, motors, mobile columns, stirring impellers, springs, a feed inlet pipe, a feed outlet pipe, a sealing cover, a fixing ring, fixing legs, mobile wheels, an opening and an air cylinder, the problem that existing efficient mixing devices for beverage processing are low in mixing efficiency is solved, the efficient mixing device for beverage processing has the advantage of efficiently mixing, working time of a user is shortened, and the practicability of the efficient mixing device for beverage processing is enhanced.

The invention discloses a flue gas purification device for rubber processing. The device comprises a fixed cylinder, wherein a plasma purification device is arranged on the right side of the fixed cylinder, a top cover is fixedly mounted at the top of the fixed cylinder, a filter cartridge body is vertically and fixedly mounted in the fixed cylinder through a connecting rod, a base plate is transversely and fixedly connected to the interior of the fixed cylinder, and a motor is fixedly connected to the bottom of the fixed cylinder. According to the invention, the inner wall of the filter cartridge body is cleaned by the motor through a transmission mechanism and a cleaning mechanism; the impurities brushed off are discharged by a pollution discharge mechanism, so that the device has the advantage that the filter cartridge is convenient to clean, and solves the problems that the interior of a filter cartridge of an existing flue gas purification device does not have a certain cleaning structure, a user needs to detach a plurality of bolts on the surface of a cover plate to take out and clean the filter cartridge during cleaning, and the flue gas purification efficiency is reduced toa certain degree, and people can use the flue gas purification device conveniently.

The invention discloses a building formwork convenient to mount and dismount. The building formwork comprises a formwork body and a hinge; one end of the formwork body is fixedly connected with a clamping head, a clamping block is rotatably connected to the inner side of the clamping head through the hinge; and a limiting plate is fixedly connected to the left end of the clamping block, a connecting rod is rotatably connected to the middle of the bottom end of the clamping block, a pushing rod is rotatably connected to the bottom of the connecting rod, a rotating wheel is rotatably connected to the left end of the pushing rod, a spring is fixedly connected into the rotating wheel, a connecting shaft is rotatably connected into the spring, a control handle is fixedly connected to the lowerside of the rotating wheel, and a clamping groove is formed in the left end of the formwork body. According to the building formwork convenient to mount and dismount, the structure is simple, the convenient and practical effects are achieved, rotating of the rotating wheel is driven by rotating the control handle, pushing and pulling of the pushing rod are realized through rotating of the rotatingwheel, the connecting rod is driven through pushing and pulling of the pushing rod so that the clamping block can move up and down, clamping connecting between the clamping block and the clamping groove is facilitated, and the time and manpower of workers during mounting of the building formwork are greatly reduced.

The invention relates to the technical field of oil exploitation equipment, and provides an integral casing head of oil well drilling and production equipment. The integral casing head comprises a shell and an oil tube hanger, wherein the shell is used for being connected with a Christmas tree, the oil tube hanger is arranged in the shell, and the integral casing head further comprises a holding assembly for preventing a casing from moving up and down, the holding assembly comprises a connecting pipe, a first sliding block, a second sliding block, a connecting rod and a rotating rod, the connecting pipe is arranged outside the sleeve in a sleeving manner, the first sliding block and the second sliding block are both arranged on the shell in a sliding mode, the first sliding block and the second sliding block move synchronously relative to the sleeve and are opposite in direction, two ends of the connecting rod are connected with the first sliding block and the connecting pipe, the rotating rod is rotationally connected with the shell, and the first sliding block pushes the second sliding block to move reversely through the rotating rod. According to the technical scheme, the problems of high oil production cost and low oil production efficiency caused by the fact that a slip type casing hanger cannot tightly hold a casing in the prior art are solved.

The invention discloses a high-efficiency thickener combining central transmission and sectional rake raising. The thickener includes a thickening tank. The center bottom of the thickening tank is provided with a mud collecting groove. A working bridge is fixedly arranged on the thickening tank. A vertical plate is arranged below the working bridge. A fixing groove is fixedly provided on the innerwall of the thickening tank. The vertical plate is fixed in the fixing groove. A bracket is fixed on the working bridge. A motor is fixed on the bracket. The output end of the motor is provided witha motor reducer, and the output end of the motor reducer is provided with a central spindle. The central spindle passes through the working bridge and extends into the mud collecting groove. Beneficial effects are that energy is reasonably utilized, settled materials are not liable to fly up, the work efficiency is increased, the working quality of second and third mud scrapers is improved, and coagulation of impurities difficult to clean at the bottom of the thickening tank is avoided.

The invention relates to a refit platform balance, and belongs to the technical field of platform balances. The refit platform balance comprises a straight rod, a weighing platform and pulleys positioned under the weighing platform; and the platform balance is characterized in that an accommodating platform is fixed on the weighing platform, slope benches are arranged symmetrically at the two sides of the accommodating platform, bracing frames are arranged between the accommodating platform and the slope benches respectively, the slope benches are fixed to the ground via bolts respectively, and a groove is arranged in the ground under the pulley. The refit platform bench is reasonable in structural design and convenient to use, materials can be placed on a trolley or other tools and pushed to the accommodating platform for weighing and thus, prevented from moving up and down repeatedly, the workload and labor intensity are reduced, and the refit platform balance can be popularized and used in middle and small-sized enterprises.

The invention discloses a probe and a connector suitable for a large-current high-speed signal testing. The probe comprises a first contact part with a first contact part, an elastic part, a connecting part and a second contact part, the elastic part comprises a first linear part, a bent part and a second linear part; the first linear part extends in the axial direction and one end of the first linear part is connected to the other end of the first contact part and the other end connected to the second linear part through the bent part, the second linear part extends in a direction intersecting the axial direction; in an unstressed state, the central angle corresponding to the bent part is larger than 0 degree and smaller than 90 degrees; the connecting part is used for connecting the second linear part and the second contact part; the second contact part is arranged at one end part of the connecting part and is provided with at least one second contact part; according to the probe provided by the invention, a signal transmission path is shortened on the premise of providing elastic force, and the probe can be applied to high-speed signal transmission and large-current test environments.

The invention discloses a grain transportation trolley. The grain transportation trolley comprises a trolley bottom plate, an n-shaped frame is welded to one side of the top of the trolley bottom plate, and handles are welded to the two ends of the top of the side, away from the trolley bottom plate, of the n-shaped frame. The center of the top of the n-shaped frame is connected with a control boxthrough bolts. Shock absorbers in the vertical direction are connected to the four corners of the bottom of the trolley bottom plate through bolts, and the bottoms of the two shock absorbers close tothe n-shaped frame are connected with bearing blocks through bolts. A driven gear is arranged on a rotation shaft at the bottom of the trolley bottom plate, a drive motor is arranged in an installinghole, a worker can use the drive motor through a switch to drive the transportation trolley to move, meanwhile, loose-packed or bagged grain can be transported through dismounting and mounting of side plates, and the application range is wide; and meanwhile, during trolley loading of grain, an electronic scale can be used for counting the transportation amount in real time, grain carrying on andcarrying down are avoided, the labor force is greatly saved, and the transportation efficiency is improved.

The invention discloses a quickly connectable conductive stud structure, comprising a sheet metal part, a UV glue layer, a transparent base bonded to the sheet metal part via the UV glue layer, a metal insert embedded in the transparent base by injection molding and provided with an internal threaded hole, and a stud mounted in the internal threaded hole of the metal insert. The metal insert extends out of the bottom end surface of the transparent base to contact the sheet metal part to electrically connect the stud with the sheet metal part. The electrical connection between the stud and thesheet metal part is realized by the connection between the metal insert and the sheet metal part. The transparent base is provided and bonded to the sheet metal part by the UV glue so as to avoid damage to the surface of sheet metal part caused by riveting and welding. The UV glue can quickly connect the transparent base with the sheet metal part and is easy to operate.

The invention discloses a water-saving waterer for livestock breeding, which comprises a bottom plate. Drainage grooves are opened equidistantly at an end face of the bottom of a water storage tank. Awater blocking plate is slidably connected inside each drainage groove. Each water blocking plate is provided with a drainage hole in the middle. According to the invention, the water-saving watererfor livestock breeding is scientific and reasonable in structure, and safe and convenient in use. An animal steps on a pedal to drive a connecting rod, sliding columns and the corresponding water blocking plate to move downward, so that the water in the water storage tank flows slowly into a basin through the drainage hole for the animal to drink, the water loss caused by the direct exposure of the water to the air is reduced, the spillage of the water in the basin is also reduced, and the function of saving water is achieved. In addition, return springs are set to ensure the pedal returns tothe original position after the animal goes away, so that the corresponding water blocking plate blocks the drainage groove to avoid the entry of water into the basin. Limiting blocks are set to effectively prevent the pedal from moving up and down and prevent the pedal from loosening and falling.

The invention provides an adjustable head skin medicine applicator for dermatology department. The adjustable head skin medicine applicator for dermatology department comprises a storage outer frame,a positioning pipe, a guide cover, a rubber delivery pipe, a medicine heating frame structure, a storage pipe, a connecting insertion pipe, a piston, an outer threaded pipe, a convenient-to-disassemble protective frame structure, an adjustable jacking frame structure, an adjustable limiting frame structure, a storage frame, a storage battery and a power switch, the positioning pipe is glued to a middle lower part of the storage outer frame; the guide cover is glued to a lower part of the positioning pipe; the rubber delivery pipe is glued to a lower part of the guide cover; the medicine heating frame structure is arranged at a lower part of an inner side of the storage outer frame; and the storage pipe is arranged on an inner side of the storage outer frame. A reset tension spring sleevesan outer side of a longitudinal movable rod, a downward tensioning function on a rectangular ring is conveniently achieved in a using process, and a downward jacking function on the piston is conveniently achieved; and a limiting tooth screw is arranged at a left end of a T-shaped rod, so that the fixed longitudinal movable rod can be prevented from moving up and down.

A multifunctional belt hanging buckle ring comprises an integrated structure composed of a belt clamping ring and a buckle. The belt clamping ring is of a closed loop structure, a belt penetrates through the belt clamping ring, a vertical supporting piece is arranged on the inner side of the belt clamping ring located on the inner side of the penetrating belt, a first elastic bent piece is arranged on the outer side of the belt clamping ring located on the outer side of the penetrating belt, the middle of the first elastic bent piece is arched and bent towards the interior of the belt clamping ring, and the penetrating belt is elastically clamped. The buckle is a vertically-arranged elastic clamping piece located on the inner side of the belt clamping ring, the top end of the belt clamping ring is integrally connected with the top end of the buckle, a clamp with an opening in the lower end is formed between the buckle and the inner side of the belt clamping ring, and the portion, close to the opening, of the lower end of the buckle is provided with a bent section which is arched and bent towards the inner side of the belt clamping ring to form a second elastic bent piece. The inner convex face of the second elastic bent piece is integrally connected with a pressing block which elastically abuts against the belt clamping ring. The belt clamping ring penetrates through an outer belt, the buckle is clamped and hung on the inner belt, the outer belt is hung on the inner belt and connected with the inner belt, relative fixation is achieved, and vertical shaking of the outer belt is avoided.

The invention relates to a torch fireproof device. The device comprises a sleeve sleeved on a torch main tube and a protection sleeve which is fixed on the upper side face of the sleeve and can wrap and protect an ignition device. The torch fireproof device is arranged in the position of the ignition device at the lower end of a torch combustion head. The protection sleeve is used for wrapping the ignition device so that contact between flame and the ignition device is insulated, an original piece is prevented from being burnt down, normal production is ensured, and maintenance cost is reduced. Meanwhile, the sleeve in the touch fireproof device is divided into two parts which are clamped on the torch main tube after being connected through a screw rod so that detachment and maintenance of equipment are convenient. A buckle arranged at the upper end of the sleeve is utilized to enable the torch fireproof device to be adjusted vertically, and be prevented from moving vertically, and therefore the function of protecting the ignition device is achieved.

The invention relates to a tray and material utensil storing method and equipment of a continuous thermal treatment production line. A tray and a material utensil are placed on a tray storing materialplatform group; thermal treatment workpieces are placed on a corresponding tray and a corresponding material utensil; the tray storing material platform group is placed on a bench; the bench is placed in a tray and material utensil storing area in order in the middle of the annular ring of the continuous thermal treatment production line; a turnover trolley is adopted to transfer the tray storingmaterial platform group loaded with the tray and the material utensil between a feeding platform and a discharging platform and push the tray and the material utensil on the feeding platform. Throughthe technical scheme, the situation that the tray and the material utensil are carried up and down is effectively eliminated, the tray and the material utensil can be stacked in the annular ring of the continuous thermal treatment production line in order through the tray storing material platform group, so that management and application of the tray and the material utensil are facilitated, thetransferring distance is greatly shortened, realization of automation is facilitated, the situation that the tray and material utensil storing area is additionally arranged outside the annular ring isavoided, and the land utilization ratio is effectively increased.

The present invention provides a mechanical interlocking device. The device comprises a pull rod with teeth, a cylindrical bearing seat, a screw, a gear, connecting boards, an I-shaped connecting piece, a movable rod, a rotating shaft, a connecting rod, a worm I, a lock cylinder, a worm II and a worm gear. The screw is disposed in the middle at the upper end of the gear. The screw is provided with the cylindrical bearing seat. The front end of the gear is provided with the pull rod with teeth. Due to the design, the isolation switch can be turned on and off. The connecting boards are symmetrically fixed on the right end of the I-shaped connecting piece. The front end of the I-shaped connecting piece is provided with the movable rod. Two connecting boards are assembled on the upper end and the lower end of the rotating shaft. The mechanical interlocking device is simple in structure and design and has a linkage function. The left end of the connecting rod is provided with the worm I, the lower end of the worm I is provided with the worm gear, the lower end of the worm gear is provided with the worm II, and the left end of the worm II is provided with the lock cylinder. Due to the design, a cabinet and the pull rod with teeth can work simultaneously, so that the labor intensity is lowered. The mechanical interlocking device is convenient to use, has a long service life, can help reduce the cost of the device, and is highly reliable.

The invention provides a portable under-pressure pipeline flow velocity measuring device which comprises a supporting sleeve, a flange is arranged at the bottom of the supporting sleeve, a moving rod is slidably connected into the supporting sleeve, a velocity measuring head is arranged at the bottom end of the moving rod, and a measuring moving meter is arranged at the top end of the moving rod. A positioning mechanism is arranged in the middle of the bottom of the speed measuring head and comprises a fixing cylinder fixed to the bottom end of the speed measuring head, an adjusting rod is slidably connected to the inner wall of the fixing cylinder, scale marks are arranged on the outer wall of the adjusting rod, a clinging block is arranged at the bottom end of the adjusting rod, and the clinging block is of an arc-shaped structure. The attaching block is made of silica gel, and an adsorption groove is formed in the middle of the bottom end of the attaching block. Flanges of different sizes can be selected to install the speed measuring head and the measuring displacement meter on the pipeline under pressure for flow velocity measurement according to the calibers of different pipelines under pressure, and the device is not limited by the size and is convenient to carry and use.

The patent of the invention discloses a spring aisle of an automatic vending machine. The aisle comprises a spring for pushing goods to move, partition plates between the aisle, and an infrared sensorbelow the spring. According to the structure, the spring is suspended and does not contact a bottom plate of the aisle, when the goods are loaded on the aisle, the goods pass through a spring interval, and the bottoms of the goods is placed on the bottom plate of the aisle. Different from the traditional spring aisles, the spring is directly placed on the bottom plate of the aisle, while the goods are placed on the spring. When a system sends out a delivery order, the spring pushes the goods forward, and the goods drop when the spring rotates a circle. The structure can prevent goods from jamming, overturning, shaking from being inserted into the spring and mutual interference between the goods in the aisle during the delivery process. The sensor below the spring can be used to detect whether the goods are available or not in the aisle, so that the situation that the system is available when the goods are not available and the goods are not delivered when customers purchase products is avoided.

The invention discloses a simple positioning mold for a pull-out test for a steel bar. The simple positioning mold comprises a base. Two positioning covers are slidably mounted on the upper end of thebase by two sliders. The two positioning covers are fixedly connected by a bracket. A semicircular groove is arranged on the upper end of the positioning cover. A steel bar is arranged on the inner side of the semicircular groove. A concrete block is arranged on the inner side of the positioning cover. A first threaded sleeve is fixedly mounted on the inner side of a mounting hole. A first bolt is mounted on the inner side of the first threaded sleeve. A rubber pad is arranged at the end of the first bolt. A pressure plate is arranged on the inner side of the positioning cover. The pressure plate is slidably connected to the positioning cover through a limiting rod. A connecting sleeve is fixedly mounted on the middle portion of the pressure plate. The connecting sleeve is rotatably connected to a second bolt. The second bolt is arranged on the inner side of a second threaded sleeve. The positioning mold can conveniently fix the concrete block and prevent the concrete from moving inside the positioning cover, which affects the pull-out test for the steel bar.

The invention discloses an automatic actual measurement system for constructional engineering. The automatic actual measurement system comprises a machine body, wherein a corner shaft hole is formed in the lower portion of the front end of the machine body, a corner shaft is rotationally installed in the corner shaft hole, limiting discs are arranged at the upper end and the lower end of the corner shaft, a front roller carrier is arranged at the lower end of the limiting disc on the lower side, a front wheel shaft is rotationally installed on the roller carrier, front rolling wheels are symmetrically arranged at the two ends of the front wheel shaft, a corner transmission shaft is arranged at the upper end of the limiting disc on the upper side, a corner driven chain wheel is arranged on the side wall of the corner transmission shaft, an accommodating cavity is formed in the lower portion of the inner side of the machine body, a corner driving motor is arranged in the accommodating cavity, a corner driving chain wheel is arranged at the driving end of the corner motor, and the corner driving chain wheel is connected with the corner driven chain wheel through a chain. The automatic actual measurement system is convenient to operate, can avoid scanning dead angles, can improve the comprehensiveness of three-dimensional scanning of a building, improves the virtual three-dimensional modeling precision of the building, can store parts when not in use, avoids dust accumulation, collision and other damages, and prolongs the service life of the device.

The invention discloses a dehairing device for surface treatment of textile products, which comprises a conveying support, fixing sleeves are arranged at the top and the bottom of an inner cavity of the conveying support, through holes are formed in the two sides of the bottom of each fixing sleeve, a positioning plate is movably embedded in the surface of each fixing sleeve, and a dehairing brush is fixedly connected to the surface of each positioning plate. And a motor is fixedly connected to the interior of the fixing sleeve. Fluff on the surface of cloth is drawn and collected twice by a fan and a protective sleeve through a fixing sleeve and a through hole, then a motor and an eccentric wheel drive a hair removal brush to reciprocate back and forth through a positioning plate to efficiently brush the fluff, and finally an electric cylinder pushes and cleans the fluff attached to the bottom of the hair removal brush through a concave plate and an opening. Therefore, the unhairing device has the advantage of being good in unhairing effect, and the problems that in the using process of an existing unhairing device, the unhairing effect is poor, and secondary unhairing is needed easily due to the fact that the unhairing is carried out only through the unhairing suction sleeve are solved.

The invention discloses a building climbing mechanical arm attaching device, and relates to the technical field of building equipment. The problems that an existing attaching device is lower in attaching force, prone to damaging the ground and poorer in supporting stability during fixing are solved, the building climbing mechanical arm attaching device comprises scaffold vertical rods and pre-embedded bases, wherein vertical rod fixing clamping seats are fixedly installed on the outer sides of the scaffold vertical rods through bolts, supporting rod fixing blocks are further fixedly installedat the tops of the pre-embedded bases, supporting rod positioning bolts are further embedded into the tops of the supporting rod fixing blocks, the bottoms of the supporting rod positioning bolts areembedded into the inner sides of the pre-embedded bases, and the other ends of the supporting rods are fixedly embedded into the inner sides of the supporting rod fixing blocks. Upper horizontal plates and lower horizontal plates of the pre-buried bases can prevent the pre-buried bases from moving up and down after the pre-buried bases are fixed, middle vertical plates and bottom vertical plates can prevent the pre-buried bases from moving left and right, the adhesive force between the pre-buried bases and the ground is greatly enhanced, in this way, the supporting rods can be fixed more firmly, and the stability during fixing is greatly improved.

A method for quickly locating an application program is proposed, comprising the following steps: a terminal device detects a user's touch operation in a predetermined area; the terminal device maps the detected touch operation to a corresponding area of ​​a target page, and the corresponding The icon of the application on the area is selected. On the other hand, the embodiments of the present invention also provide a terminal device. In the above solution proposed by the present invention, by manipulating the application program of the target page in a predetermined area, the finger does not need to move back and forth in a large range when operating the device, and only needs to operate a small area on the screen to realize the precise positioning of the APP. According to the technical solution proposed by the present invention, when switching the target page, there is no need to turn the screen back and forth manually, which avoids the large-scale sliding of the fingers or the up and down movement of the whole hand, and does not require two hands to operate together; and the user does not need to change the hand. The way of holding the device and the fingers can always be kept within the habitual small area. The operation is natural, convenient and comfortable. It is especially suitable for one-handed precise positioning of large-screen devices.

The invention discloses a simple and convenient positioning mold for steel bar drawing test, which comprises a base, and two positioning covers are slidably installed on the upper end of the base through two sliders, and the two positioning covers are fixedly connected by corner codes. The upper end of the positioning cover is provided with a semicircular groove, the inner side of the semicircular groove is provided with a steel bar, the inner side of the positioning cover is provided with a concrete block, the inner side of the mounting hole is fixedly installed with a first threaded sleeve, and the first The inner side of the threaded sleeve is rotated with a first bolt, the end of the first bolt is provided with a rubber pad, the inner side of the positioning cover is provided with a pressing plate, and the pressing plate is slidingly connected with the positioning cover through a limit rod. A connecting sleeve is fixedly installed in the middle of the connecting sleeve, and the connecting sleeve is rotatably connected with the second bolt, and the second bolt is arranged on the inner side of the second threaded sleeve. The positioning mold can conveniently fix the concrete block, and prevent the concrete from moving inside the positioning cover, which will affect the pull-out test of the steel bar.