127 results about "Spring scale" patented technology

The invention provides a scale measuring device for a pitching dynamic derivative experiment. An electric motor is arranged in a motor support rod; a motor output shaft is connected with a transmission shaft via a speed reducer and a shaft coupling; the transmission shaft is rotationally connected with a scale support rod; the rear end of the scale support rod is fixedly connected with the front end of the motor support rod; the front end of the transmission shaft is provided with an eccentric wheel which is provided with a lug; the lug is inserted into a sliding chute of a slide block; upper and lower cross springs of a cross spring scale have a crisscross structure respectively, and the front and rear ends thereof are fixedly connected with a scale frame via a front seat; and central positions of the upper and lower cross springs are provided with supporting cylinders. The scale measuring device for the pitching dynamic derivative experiment is a novel pitching dynamic derivative scale device. A pitching direct derivative of an aerial craft and a rolling crossover derivative induced by yaw oscillation can be measured under a big attack angle by designing a special vibrating mechanism, the cross spring scale and a pitching five-component scale structure. The scale measuring device for the pitching dynamic derivative experiment can meet the requirement of a wind tunnel trial.

The invention discloses a method for detecting multiple technical indexes of a turntable bearing by using a detecting platform. The method relates to the detecting platform (1) and detecting accessories, wherein the detecting accessories comprise a first dial gauge (2), a second dial gauge (4), a first upright post (5), a mandrel (6), a second upright post (7), a fastening bolt, a gauge block and a spring scale. In the method, an actual condition of the turntable bearing (3) is simulated, an outer ring radial runout value, an outer ring axial runout value, an actual measurement starting torque value, an actual measurement stationary torque value, an actual measurement height error mean value, an inner ring radial runout value and an inner ring axial runout value of the turntable bearing can be respectively detected under the same detecting environments and conditions by using the detecting platform and the detecting accessories, and the accuracy of the detected result is guaranteed. The detection method is simple and practical, can be used for detecting bearings of different specifications and types, and has instructive significance for detecting multiple technical indexes of the bearing simultaneously.

The invention discloses an aluminum alloy stirring friction welding defect repairing method. The embedding position of a stirring needle in an aluminum alloy stirring friction welding seam is determined and judged through the method that a magnet block is hung below a spring scale. The fractured stirring needle is taken out of the welding seam through a pneumatic milling cutter, an electric hand drill and long flat nose pliers which are used in a coordination mode. Then, non-consumable electrode metal-inert gas welding (MIG welding) is used for filling excavation positions lacking materials. Finally, the stirring friction welding method is used for final welding repair on the problem welding seam. The method is simple in operation, easy to achieve, high in economy, practical and remarkable in actual project application meaning.

A hoisting device of a horizontal modality test comprises a modality test flotation hoisting device and a modality test weight-loss device, wherein the modality test flotation hoisting device comprises a flotation ring installing board, a flotation ring, a flotation flat board, a rope clamping component and a burden-reducing handing pillar, and the modality test weight-loss device comprises linear sliding rails, a sliding block, a spring scale, channel steel and a support frame. The modality test weight-loss device is installed above the modality test flotation hoisting device through the support frame. The support frame is fixed with a base of a main machine through connecting pieces. The linear sliding rails are fixed with the support frame and are parallel with a linear guide rail in the modality test flotation hoisting device. Sliding blocks of a left linear sliding rail and a right linear sliding rail are connected through the channel steel. One end of the spring scale is hung on the burden-reducing handing pillar in a hooked mode, and the other end of the spring scale is connected with the channel steel and is kept in a vertical state. The sliding block is in linkage with heels of the channel steel and the flotation ring installing board. According to the hoisting device of the horizontal modality test, plane motion is basically unconfined, and free of effects of friction, inertia force and gravity of tested pieces.

An instrument for measuring the adhesion of adhesive belt is composed of base, drive unit, vertical column and its supporter, slide block and the bearing unit of the adhesive belt to be measured. Said drive unit consists of miniature motor, straight-teeth cylindrical gear set and trapezoidal leading screw set. Its method features that a spring balance is used to measure the stripping force of adhesive belt.

The invention relates to a solar transfusion alarm, which consists of a battery, an alarm body and a spring scale. Application steps include marking the position, which is measured by the spring scale, of an empty transfusion bottle as a point A; marking the position, which is measured by the spring scale, of a full transfusion bottle as a point B; fixing a conductor plate used as a fixed contact from the point A to the point B on the spring scale; adopting a degree iron plate on the spring scale as a movable contact; connecting one lead on the alarm body to the fixed contact while connecting another lead on the alarm body to the movable contact; respectively connecting two poles of the solar battery to the fixed contact and the movable contact; and switching off a circuit when the liquid in a transfusion bottle is gradually consumed until the point A and the point B on the spring scale contact with each other, and then making an alarming sound by the alarm body. In the technical scheme, the solar transfusion alarm can remind a transfusion patient of paying attention to the change of liquid level.

The invention discloses a device for detecting the length of a belt of an engine of a motor vehicle. The device comprises a platform, wherein a spring scale, guide rails, belt pulleys, a sliding block and a threaded rod are arranged on the platform; the belt pulleys are connected with the guide rails through the sliding block; the sliding block between the guide rails slides along the rail; the guide rails comprise a first guide rail and a second guide rail; the first guide rail and the second guide rail are arranged in parallel; and measuring scale marked lines are formed on the first guide rail. One spring scale serves as the standard stress application mode, load can be adjusted as required, and a hand wheel is used for adjusting the distance and the tensile force between the belt pulleys, so the device is convenient to operate. The device is simple in structure, easy to operate and high in detection efficiency. The belt pretightening force is continuously variable within the measuring range as required.

The invention provides a tunnel arch crown settlement and peripheral convergence monitoring method. The tunnel arch crown settlement and peripheral convergence monitoring method comprises installing a rope free of elastic deformation, wherein one end of the rope is fixed on an arch foot arranged at one end of every tunnel section, the other end of the rope is tied on an electric spring scale after calibration, the spring scale is located on an arch foot arranged at the other end of every tunnel section, and the middle portion of rope penetrates a tunnel circular arch; pre-applying the initial force when the monitoring is started to enable an initial reading to be displayed on the electric spring scale, pulling the rope to enable the initial reading on the spring scale to tend to be stable and recording; repeating the above steps and deploying the same way of monitoring on the plurality of sections; performing continuous observation on readings of the electric spring scale during tunnel construction, suspending the construction if the readings are changed, performing repeated observation on the tunnel sections through a full-drilling machine or a three-dimensional laser scanner and performing real-time treatment when problems are found. A tunnel arch crown settlement and peripheral convergence monitoring device is simple, free of model prediction, small in calculation amount and free of technical difficulties and workers can timely find dangerous situations conveniently.

A buoyancy demonstrator relates to a teaching aid, which comprises: a spring balance hung on a support, wherein a string hung on the spring balance is connected with a floating drum through a fixed pulley in the bottom of a pool; when the pool is filled with water, the floating drum can float on the water surface; if the floating drum is removed, a balloon can replace the same.The buoyancy demonstrator has the following advantages: making students understand that the buoyancy is vertical, when the object is fully immersed into water, the size of buoyancy has nothing to do with the immersed depth of the object; when the floating drum is replaced by the balloon, the volume of the balloon reduces with the increase of the immersed depth of the balloon, however, buoyancy becomes low. As a result, the buoyancy demonstrator helps students to be more scientific-minded and to be free from the effect of thinking set.

The invention relates to a multifunctional teaching spring balance which is composed of components of a panel (1), an eave board (2), a main spring (3), a device for suspending a main spring (3), a device for connecting with an experiment object, a handle (7), a pointer (9), scales (10), a rack locking device (11) and a rack unidirectional movement control device. Because the multifunctional teaching spring balance has a measured value memory function, the measured value and the displacement of the measured experiment object can be accurately read even the multifunctional teaching spring balance is separated from the experience object after experiment. Because the rack locking device (11) can control measurement starting time, the multifunctional teaching spring balance can measure the experiment data of a required measurement process without interference of a non-required measurement process. Because the multifunctional teaching spring balance is equipped with the rack locking device (11) and a rack unidirectional movement control device, application of the multifunctional teaching spring balance is greatly expanded and can be used in many experiments which are unsuitable for widely known common spring balances.

The invention discloses a hanging posture adjusting device for ground sub-assembling and testing of a solar wing panel. The hanging posture adjusting device comprises a straight hanging rod, a hanging connection piece, a hanging rope, a spring scale, a turn buckle, an X-axis adjusting bolt, an X-axis sliding assembly, Y-axis sliding connection pieces, Y-axis adjusting bolts and solar wing connection pieces. The hanging posture adjusting device is convenient to dismount and mount, the solar wing panel can still keep the original state after dismounting and mounting, so that hanging parameters are not required to be adjusted repeatedly when repeated solar wing panel ground experiments need to be performed, the hanging efficiency is improved, and the efficiency of the ground experiments is improved; the hanging position can be roughly adjusted by pipe-clamp-shaped straight rod connection seats and can be finely adjusted by the X-axis adjusting bolt and the Y-axis adjusting bolts, rapid adjustment of a hanging point is realized through combination of rough adjustment and fine adjustment, accordingly, the solar wing panel can be rapidly adjusted to a designated height and can keep a correct posture, and the hanging efficiency and accuracy of the solar wing panel are improved.

The invention discloses an automotive plug-in fuse testing device which comprises a bracket and a beam, wherein a driving assembly is fixed on the beam; a first clamping arm positioned below the beam is fixedly connected below the driving assembly; a second clamping arm which is fixedly connected with the beam is arranged on the side of the first clamping arm; clamping assemblies are arranged on the first clamping arm and the second clamping arm; a testing mechanism is arranged below the clamping assemblies and comprises a hanging head; a spring scale is connected below the hanging head; a fixed pulley is arranged below the spring scale; one end of the fixed pulley is connected with the spring scale, and the other end of the fixed pulley is connected with a roller; the roller is connected with a first drum; the roller is connected with a second drum; the first drum and the second drum are coaxially connected with a rotating shaft; and the rotating shaft is driven by a second motor. According to the device, the clearance between two pins of the automotive fuse can be tested, and the tensile strength of the automotive fuse can be tested.

The invention provides an adjustable suspension device for a satellite eccentric unfolding accessory and an application of adjustable suspension device. The device comprises a suspension cross beam, apositioning cross beam, a suspension vertical beam, a suspension rope, and a spring scale. The suspension cross beam is connected with the positioning cross beam. The positioning cross beam is connected with the suspension vertical beam. One end of the suspension rod is bound to the suspension vertical beam and one end is bound to the spring scale. The suspension cross beam is connected with theeccentric unfolding accessory. In the suspension state, the length of the suspension rope is adjusted, so the tensile force of the spring scale is equal to the gravity of the unfolding accessory, so the gravity of the eccentric unfolding accessory is precisely unloaded. According to the invention, friction, overturning and the like caused by eccentricity can be effectively prevented from causing test failures; and it is reliably ensured that ground unfolding test of the satellite unfolding accessory is effectively and smoothly finished.

The invention relates to a physics teaching appliances technique, particularly to a demonstrate device for measuring the self-changing of the weight, comprising a box body, a support frame, a boom, a spring balance, a hook, an article and air, wherein the box body is the transparent container cube box made of glass in the sealing state and is full of air. The middle part is fixed with the supporting frame, the middle part of which is fixed with the boom, and the lower end of the boom is fixed with the spring balance; the hook of the spring balance is suspended with the hook of the article. In the second embodiment, the device is composed of a box body and an air balloon and the like, which is suitable for the research on the ground weight and the related teaching, including the related courses in the elementary school to the college.

The invention discloses an internal stress detection mechanism for a shock absorber, which comprises a tool rod, a detection gap, through holes and a spring scale. The detection gap is arranged on a cylinder and the through holes are arranged on a working cylinder and passes through the working cylinder. One end of the tool rod is inserted into the through hole. One end of the spring scale is connected with the other end of the tool rod. The using method comprises the steps of: firstly, milling a U-shaped, square or circular detection gap on the cylinder of a sealed shock absorber so as to expose the working cylinder and drilling the through holes at both sides of the working cylinder; and then, clamping the shock absorber vertically on a vice, penetrating one end of the tool rod through the two through holes of the working cylinder, hooking the other end of the tool rod by the spring scale, and applying a force at 90 degrees with the tool rod, so as to enable the the tool rod rotate transversely along the detection gap of the cylinder, in this way, the load applied when the cylinder rotates is measured, and the torque is calculated. The detection mechanism is simple and accessible in structure and low in cost, and can detect the internal stress of the shock absorber subjected to rotary extrusion and shell nosing without any special devices.

In sash windows where the sashes are supported on window units which run in channels in a window frame, and the window units are suspended from spring balances, the shoes have easily accessible mechanisms for adjusting the tension in the spring balances, without demounting the sashes and without separating the spring balances from the shoes. Adjustment is done by rotating an element in the shoes, at the bottom of the sash, with the sash pivoted out of the plane of the window. A tool is inserted in a socket to turn an element of the shoe exposed by the tilting of the sash, and the rotation of this element is transferred through 90° to vary the tension in the respective balance.

A goniometer (also sometimes referred to as an arthrometer, fleximeter, or pronometer) for measuring the range of motion of an animal knee includes an anchor platform to which an animal's upper leg (femur) may be affixed, and a mobile platform to which the animal's lower leg (shin and tibia) may be affixed so that the upper and lower leg are situated along a common axis. The mobile platform is preferably movable in two degrees of freedom (translational and rotational) about the anchor platform so that the relative motion of the platforms causes the upper and lower leg to move about the intermediate knee joint. A force transducer (such as a spring scale) and/or a torque transducer (such as a common torque wrench) may be used to obtain measurements of the laxity of the knee joint.

The invention discloses a novel multifunctional umbrella, which comprises a supporting frame and an extendible supporting frame, wherein the extendible supporting frame can be shrunk into the range of the supporting frame, plastic cloth on an umbrella edge can be stretched when the extendible supporting frame extends out, snap fasteners are arranged on the edge of the plastic cloth, umbrella cloth covers the upper surface of the supporting frame, a reflective tape is pasted at the upper end of an umbrella handle, a GPS (Global Positioning System) module is inlaid in the umbrella handle below the reflective tape, the GPS module is connected with a display screen which is installed on the surface of the umbrella handle, an electric torch which is installed on the umbrella handle is arranged below the GPS module, a battery in a battery compartment of the electric torch is connected with the GPS module through an electrical wire, a USB (Universal Serial Bus) hand-operated charger is also arranged at the middle segment of the umbrella handle, the undermost end of the umbrella handle is hollow, a spring scale is installed at the inner part at the undermost end of the umbrella handle, and a hanging hook of the spring scale is exposed from the umbrella handle. The novel multifunctional umbrella has the beneficial effect that several functions are integrated, so that the daily use of people is facilitated.

The invention belongs to the technical field of medical care, and discloses a movable traction bed for a lower limb fracture of a child and a control method of the traction bed. The method comprises the following steps: a fracture traction direction is adjusted according to different fracture sites, a first traction rope and a second traction rope are hung on spring scales and pass through horizontal PVC pipe holes, the first traction rope and the second traction rope are pulled to lift a bearing platform away from a bottom plate, wherein in the adjustment of the fracture traction direction, fracture traction force values are displayed in real time through the spring scales. The movable traction bed for the lower limb fracture of the child provided by the invention has the advantages of asmall size, convenient movement, simple nursing and convenient re-hospitalization check; the hospital stay time is shortened, parents of the child can return to work as soon as possible, the family pressure is reduced, the medical costs are reduced, and the family happiness is increased; and when the movable traction bed for the lower limb fracture of the child is used, fracture traction directioncan be adjusted according to the different fracture sites, and the movable traction bed can fully meet the needs of traction treatment of fractures at corresponding sites.

The invention provides a frictional force experiment instrument, comprising a bottom plate, an object placed on the bottom plate and a spring scale connected with the object through a rope, wherein the spring scale comprises a helical spring and a hollow shell. The frictional force experiment instrument is characterized in that the middle part of the object is provided with a straight hole for the penetration of a horizontal rod and the size of the straight hole should be controlled in a condition that the inner wall of the straight hole cannot make contact with the horizontal rod in the motion process of the object; both the two radial sides of the shell are provided with holes; the shell and the spring penetrate the holes and the horizontal rod penetrating the inner cavity of the spring to be suspended; and the shell is connected with a suspended weight barrel through a rope wound on a pulley. After the structure is adopted, fine weights such as fine sand and the like are considerably added in the weight barrel to pull the object to move at a constant speed, and the experiment can be carried out through changing the rough bottom plate below the object and increasing/decreasing the pressing blocks on the object. The experiment principle of the invention is same as the scheme in the textbook, and the invention has the advantages of simple principle, easy understanding of the students, convenient operation, approximately constant speed of the object and excellent effect.