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Protezione della molla della spazzola
Protezione della molla della spazzola
       Conventional motor arrangements include a rotor with windings to conduct current during machine operation. As the rotor rotates, current is conducted through the rotating elements from sources external to the rotor to the rotor windings. A rotating element such as a slip ring or a commutator contacts the brush spring to conduct current.        There are two main types of brush springs, single-coil brushes and double-coil brushes. The brush springs provide constant pressure to the commutator and slip rings while minimizing brush wear, burning and scratching. They provide excellent work at high speeds for improved motor performance. The brush spring is relative to the rotating element, and the brush spring is ground due to friction during use. It is damaged and needs to be replaced periodically. So sometimes the brushes are replaced during motor downtime. To change the brushes safely, the operator uses one hand (to avoid current passing through the operator's body). Brush carriers...
Do you really understand the variable force spring?
Do you really understand the variable force spring?
The variable force springs can break through the traditional spring affected by Hooke ' s law, so that the stroke and force are no longer proportional to increase, but can achieve a variety of elastic displacement combinations such as negative slope stepped fixed force. According to the needs of mechanical engineering, the relationship between elastic force and displacement stroke can be used to design various elastic curve changes in specific occasions, which is the output force value can be arbitrarily desired.     The variable force springs can be customized for various elastic curve changes according to specific occasions, such as department store shelves propulsion device, pen-type drug syringe ( insulin ) and cordless curtain.      What are the reasons for using variable force springs in these applications ? What are they trying to achieve ?     In the point of purchase display, variable force springs are commonly used in trays that push product forward in a controlled manner. Variable force spring corporated into pusher trays aid...
Analisi sulle cause di guasto delle spazzole di carbone del gruppo elettrogeno
Analisi sulle cause di guasto delle spazzole di carbone del gruppo elettrogeno
In recent years, several safety briefings have successively reported shutdown accidents caused by carbon brush or rotor collector ring failure of large generator units, resulting in great economic losses to the enterprise.Carbon brushes are motor brushes. Improper maintenance and use of the carbon brush of the generator set during operation will cause accident load reduction or even shutdown.        Factors leading to carbon brush fault      Electromagnetic factors : when reactive or excitation current is adjusted, the spark of carbon brush has obvious change. When the exciter commutates, the contact between the carbon brush and the commutator is not good, and the contact resistance is too large ; the uneven thickness of the oxide film of the rectifier or slip ring causes the unbalanced distribution of carbon brush current ; or sudden change of load and sudden short circuit lead to abnormal voltage distribution between commutators ; unit overload and imbalance ; carbon brush selection is unreasonable, carbon brush spacing...
Design steps of constant torque spring
Design steps of constant torque spring
Constant torque spring is a constant force spring with special force moving between two spools. The spring is stored on the storage spool and wound reversely on the output spool. When released, torque is obtained from the output spool when the spring returns to its natural curvature on the storage spool. The spring does not need to be connected to the storage spool. The spring can be installed in a cavity without storing the spool at all. However, friction will then be introduced and torque requirements will change. The torque generated by the constant torque spring will increase slightly after several revolutions. Constant torque, even negative torque, is also possible. Negative gradients of up to 50% can be achieved in some applications. As for the design of constant torque spring, when considering the use of constant torque spring, it is strongly recommended that you talk with Qianye engineers and study various design parameters. Some initial design calculations can be carried out...
[Precisione Qianye] Design fisico e forza di rinculo della molla a forza costante
[Precisione Qianye] Design fisico e forza di rinculo della molla a forza costante
 In most types of springs, when the spring is compressed and then relaxed, the force applied is proportional to the distance the spring is stretched. Unlike ordinary springs, constant force springs do not comply with this rule. Due to the physical design of constant force spring, its return force remains constant. Therefore, constant force springs are useful in many applications that require consistent recoil.     The behavior of ordinary springs can be described by a mathematical equation called Hooke's law. The law points out that the force of the recoil spring in the recoil direction is equal to the distance between the spring displacement and the equilibrium point. In other words, it is how much the spring is elongated and multiplied by the mathematical constant, that is, the spring stiffness. The spring recoils in the direction opposite to the stretching direction. Because many elastic materials work in this way, Hooke's law has a wide range of applications in the field of physics.  ...
Tecnologia di progettazione di molle ad alta precisione
Tecnologia di progettazione di molle ad alta precisione
 Spring to ensure good elastic performance, that is, absorb a lot of elastic energy without plastic deformation; Sufficient plasticity and toughness to prevent impact fracture. According to the stress nature, the spring can be divided into tension spring, compression spring, torsion spring and bending spring. According to the shape, it can be divided into dish spring, ring spring, plate spring, spiral spring and truncated cone scroll spring.       The design process of spring has the following points:      1. Device space: design a compression spring, clearly understand the space required to install the spring, and then you can master the basic manufacturing conditions, outer diameter, inner diameter and free length of a compression spring.      2. Movable stroke load: the design of compression spring to clearly understand the position to be actuated and the elastic force to be carried. Determine the position and know the required elasticity, then you can determine the material, wire diameter and number of...
carbon brush spring Product
 Primavera di potenza
Primavera di potenza
Characteristic: The power spring is coiled by steel strip. A spring box is required to limit its outer diameter. The center of the spring is connected to the shaft. When an external force is applied to make the shaft and the spring rotate relative to each other, the spring will be wound on the shaft and stored Torsion, when the external force disappears, the spring generates torsion on the shaft or spring box. Advantage: Power springs are divided into natural power springs and pre-stressed power springs according to their relaxed shape. In contrast, the pre-force type power spring can store 25% to 55% more torque and provide more effective turns. Product manufacturing range: The thickness is 0.05~0.85mm, and the width is 2.0~60mm. Principle of the scene: The high-precision pen injector uses a unique power spring to provide small and highly accurate drug dosages. A fixed amount of medicine is injected into the body through the constant force of the spring...
 Servizi di montaggio e montaggio
Servizi di montaggio e montaggio
Qianye Company non fornisce solo la produzione di molle di precisione, ma si concentra anche sulla progettazione strutturale e sulle soluzioni funzionali dell'intero sistema di molle e può fornire un set completo di produzione e assemblaggio del sistema
 Molla a torsione costante
Molla a torsione costante
Characteristic: The fixed (constant) torque spring (spring) is made of stainless steel. The external force rewinds the mainspring from its natural state to the output wheel (energy storage). When the external force is removed, the spring will return to its natural state. At the same time, a constant torque force (stored elastic force) is generated (released) on the output wheel, so it is called a constant torque generator. strip. Belongs to (a use method in constant force spring) Advantage: The advantages of fixed-torque springs compared to power (scroll) springs: 1. The torque will not change due to the increase in the number of revolutions. To 2. There is no limit to the number of available turns, and the design of multi-turn turns mostly adopts a fixed-torque spring. To 3. The number of invalid rotations is small, more energy can be stored, and the efficiency is higher. To Manufacturing range of fixed torque spring: The thickness is 0.05~0.85mm, and the width...
 Molla per spazzole di carbone
Molla per spazzole di carbone
Characteristic: 1. Due to the constant force, regardless of the length of the carbon brush and the commutator, the pressure remains the same. 2. Constant force spring reduces carbon brush loss, prolongs the life of carbon brush, and reduces current loss. To 3. Small motors can be designed to reduce the outer diameter of the motor. 4. The length of carbon brush can be increased. To 5. A larger commutator can be used. To 6. Reduce sparks and reduce electromagnetic interference. Constant force spring for single roll carbon brush 1. Carbon brush width 2. Carbon brush height: The spring width must be smaller than the carbon brush height 3. Length of abradable carbon brush: The spring stroke must be greater than the length of the abradable carbon brush 4. Contact pressure required for carbon brush and commutator: required spring force Constant force spring for double-rolled carbon brush 1. Carbon brush width 2. Carbon brush height: The spring width must be...
 Molla a forza variabile
Molla a forza variabile
Characteristic: The appearance of variable force spring and variable torsion spring is very similar to constant force spring and constant torsion spring. Variable force springs and variable torsion springs can break through the influence of Hooke’s law on traditional springs, so that stroke and force no longer increase proportionally, but can achieve various elastic force-displacement combinations such as negative slope stepped constant force, which can be mechanically For engineering requirements, use the relationship between elastic force and displacement stroke to design various elastic curve changes in specific applications. There are a variety of different variable force springs, variable torsion spring application designs, and solutions. The manufacturing range of variable force springs and variable torsion springs: The thickness is 0.05~0.85mm, and the width is 2.0~65mm.
 Servizio di progettazione di ottimizzazione
Servizio di progettazione di ottimizzazione
From product ideas, design to finished product manufacturing, we can assist customers in completing them, and help customers optimize their products from the professional perspective of spring use, speed up product development, and speed up time to market. From the initial stage of spring component design, production to final assembly, customers choose the advantages that Qianye can get. 1. Save product development time 2. Give you a variety of solutions, choose the desired optimization solution 3. The spring that best suits your product 4. Serve you for life and satisfy any technical support you have.
carbon brush spring News
 Design of constant force springs
Design of constant force springs

Ora: 14-9-2022

 A constant force spring is a spring that exerts a constant force over its range of motion. That is, it does not obey Hooke's law. Typically, a constant force spring is constructed as a coiled band of spring steel so that the spring relaxes when fully coiled. When it is unrolled, the restoring force comes mainly from the portion of the belt that is close to the roll. Since the geometry of this region remains nearly constant as the spring unfolds, the resultant force is nearly constant.       By creating a spring with a variable pitch, you can make a push-shape spring with a constant velocity. Placing a larger pitch in a larger outer diameter coil and a smaller pitch in a smaller outer diameter coil will force the single spring to fold all coils at the same rate when compressed.       Design of Constant Force Springs: A constant force spring is a coil of prestressed tape that exerts a nearly constant restraining force against unwinding (Figures 1 and 2). The force is constant because the change in the radius of curvature is constant. This is the case if the change in coil diameter due to buildup is not taken into account. Long reach, constant torque and virtually no friction have led many designers to specify constant force springs in applications such as sliding doors and windows and height adjustment of computer monitors and fans, store display shelves or motor carbon brush motors . Constant force motor springs are also used to drive mechanisms for timers,...
 [Qianye precision]Understand all aspects of power spring
[Qianye precision]Understand all aspects of power spring

Ora: 14-9-2022

What is a power spring?      1. The power spring is a coil spring, which is made of stainless steel band. Power springs store and release rotational energy in the form of torque through a central mandrel or spring housing.        2. The power spring has a power rotation torque in a limited space when working, and is usually used for cable reels, dog leashes, medical equipment, etc.        3. Power springs are also called clock springs, coil springs, and helical torsion springs.        4.Power springs are divided into conventional power springs and prestressed power springs. Pre-stressed power springs Compared to traditional power springs, pre-stressed power springs increase the recoil process and can provide 25-55% greater output than traditional power springs.        What are the advantages of a power spring?         1. High torque transmission per unit deflection.         2. Normal residual stress.         3. The prestressed power spring can store 25%~55% more energy than the traditional spring.       What products can power springs be used for?       There are many types of power springs used in auto parts, and one of the most common parts is seat belts. Seat belt essential features such as long range, long life, easy access and automatic retraction, pre-stressed power springs are the best choice for it. Dog leashes, hose reels, badge reels, and some toys (hairsprings) also use power springs to retract easily. It has the characteristics of long length, long life cycle and convenient retraction. Power...
 Congratulations on the return of Shenzhou 13 spacecraft
Congratulations on the return of Shenzhou 13 spacecraft

Ora: 14-9-2022

At about 10 am on the 16th, the "Shenzhou 13" manned spacecraft landed smoothly, and the three astronauts who had been on a business trip for half a year also returned safely, and the hearts of many people also fell to the ground. At the same time, Yang Liwei's voice that appeared in the live broadcast room also made many people's soul wear 2003. Recalling that when the "Shenzhou V" was successfully launched in 2003, the first batch of post-90s generation was just thirteen years old. "Shenzhou No. 5" may already be a term with a sense of age for the late-born children of Generation Z and Generation Alpha. Mankind's curiosity and desire to conquer space have never stopped. What does the vast universe look like with human naked eyes? Is it really romantic and exciting to be in space as outlined in science fiction films? Is space really desolate and silent?      Because outer space is full of all kinds of mysteries, human beings may be afraid to see the deep universe in outer space, especially when they float in outer space when they get out of the cabin. Therefore, when the astronauts leave the cabin, they are tied to the astronauts with an 18 meter long rope and connected with an oxygen pipe to provide life support for the astronauts. If the astronauts do not grasp and drift, they can use this rope to return to the space station. Fortunately, our Qianye precision has also made a small contribution to the national aerospace industry. We are mainly involved in...
 Types of Springs in Medical Devices
Types of Springs in Medical Devices

Ora: 14-9-2022

Springs are integral components in the manufacture of many medical devices. Whether it’s for a surgical stapler or a medical monitor, the types of springs in medical devices are defined by a specific action or movement required for the application. Though relatively simple in its design, springs store the mechanical energy necessary for a wide range of medical devices, machinery, and equipment to function properly. Any type of surgical instrument, medical equipment or device that has a mechanism undoubtedly has a spring component. Spring material must be medical grade, and the design and function of any device must adhere to stringent regulatory requirements and guidelines as defined by the FDA. Booms, table and bed lifts, fluid control devices, wheelchairs, medical testing and monitoring equipment either fixed or mobile, MRI and X-ray machinery, dental x-ray with articulated arms, medical equipment drawer closing mechanisms, anesthetic infusion devices, sterilization valves, various implants, and shunt valves are all examples of medical devices that require springs to function. Manufacturers of medical devices and devices subsequently relied heavily on springs in a variety of applications. The medical industry relies on the same types of springs that most industries rely on—constant force springs, constant torsion springs, power springs. Constant force spring Constant force springs are coiled with stainless steel tape so that when coiled relative to being stretched, the spring relaxes in a low stress state. When it is unrolled, the restoring force comes mainly from the portion close to the unwinding spring coil. The resultant force is almost constant. The actuators that operate in the surgical...
 Fall Arrester using Qianye power spring
Fall Arrester using Qianye power spring

Ora: 14-9-2022

The fall arrester is also called the speed difference device, which is a protective product. It is suitable for safety protection when the crane is hoisted to prevent the suspended workpiece from accidentally falling. It can effectively protect the life safety of ground operators and the damage of the suspended workpiece. It is used in metallurgical automobile manufacturing, petrochemical industry, engineering construction, electric power, and ships. , Communications, pharmacy, bridges and other high-level workplaces. The protective effect of the protective device product must pass. The power spring has a retractable function and is an ideal part of the gravity dissipator used in the dropper. The anti-fall system is connected between the fixed points of the cable harness, and they can stop the user from falling in the first time. Even when the power spring is fully deployed, the gravity dissipator of the dropper can prevent the user from being hit in the event of a fall. The advantages of Qianye power springs are divided into natural power springs and pre-force power springs according to their relaxed shape. In contrast, the pre-force type power spring can store 25% to 55% more torque and provide more effective turns. When using Qianye power spring as its parts in normal use, the safety rope will expand and contract freely with the human body. Under the action of the mechanism in the device, it is in a semi-tensed state, so that the operator has no sense of worry. In the event of a fall, the pulling speed of the safety rope will be significantly increased,...
 Qianye innovative power spring plays an important role in Hose Reel
Qianye innovative power spring plays an important role in Hose Reel

Ora: 14-9-2022

Hose Reel is also called pipe winder, Winder, reel, drum and air drum. Among many working equipment, the pipe winder is a very labor-saving and convenient long-distance energy transmission device. Its basic structure consists of hose, power spring, rotating shaft and other safety mechanisms.         The power spring of the hose reel can stretch and shrink the pipeline, intensively manage various energy pipelines, and change the previous phenomenon that the pipeline, power plug, oxyacetylene pipeline, bulb, spray gun and other tools are scattered in disorder. It can be used alone or in combination, which greatly saves the factory space, beautifies the working environment and improves the grade of the enterprise. Improve the working environment. The power spring is made of rolled steel strip. A spring box is required to limit its outer diameter in use. The center of the spring is connected with the shaft. When an external force is applied to make the shaft rotate relative to the spring, the spring will roll on the shaft center and store torque. When the external force disappears, the spring will produce torque on the shaft or spring box. The tension on the spring has been pre loaded at the factory, and the spring produced by an improperly selected manufacturer may become unstressed or have excessive tension. Too much tension will lead to too fast and fierce retraction. At the same time, the service life will be relatively short, and the elasticity will soon fail.         Our company has made technical product updates for power springs. First of all, our company adopts 301 stainless steel with...
 Design and manufacturing method of constant force spring
Design and manufacturing method of constant force spring

Ora: 14-9-2022

 Design and manufacture a complete set of constant force springs for a variety of applications in almost all industries, from medical care to aerospace and general household products. The constant force spring is different from the traditional spiral wound spring. They are made of pre tensioned high-yield metal strips (usually stainless steel) rather than wires. Constant force springs are classified as "tension springs". When winding, the metal strip resists uncoiling with nearly constant resistance. When extended, the internal stress of the metal resists any load force at a nearly constant rate. Once the spring extends to a length of 1.25 times its diameter, it reaches full load and produces a nearly constant force. According to the size of the spring and the load it supports, the fatigue life cycle of the constant force spring is between 2500 and 1000000 times.     Constant force springs are commonly used in automotive engineering, aerospace engineering, medical and retail. Some common applications are: Cable retractor, motor, spacecraft, fitness equipment, door closer, hose retriever, nuclear magnetic resonance scanner, X-ray machine, point of sale display, toys, furniture accessories, retractable tape measure or dog line, retractable vacuum cleaner line, etc.     If you choose a constant force spring for an application, you must first consider several factors. Material selection is important, as is the thickness and width of the metal strip. The most commonly used metal is grade 301 stainless steel because it can make consistent high-quality and strong constant force springs. Other materials are available, such as high carbon steel, Inconel, etc., which may...
 Principio fisico alla base della molla a forza costante
Principio fisico alla base della molla a forza costante

Ora: 14-9-2022

When you walk into your office building on your way to work every day, or into your local bank, or any commercial facility, you may open a heavy glass door. When you cross the threshold, the door closes behind you, and you don't think about it. However, the heavy glass door was probably closed by a constant force spring. Constant force springs are widely used in daily applications. From door closers to rope and hose retractors, to sports equipment, toys, motors, etc., constant force springs exert force at an amazing high frequency and consistency. Let's take a closer look at the basic physics behind the constant force spring. In the 17th century, the British physicist Robert Hooke proposed a formula for force and elasticity, which is now called Hooke's law. Hooke's law states that the force (f) required to stretch or compress a spring for a distance (x) varies linearly in proportion to that distance. The formula is f=kx, where k is a constant and represents the stiffness of the spring.   Constant force springs in terms of actual spring performance, Hooke's law is nominal. In the equation, the distance X that the spring moves is a relatively small number. Finally, any elastomer that is stretched or compressed beyond the stress limit of its material composition will show signs of deformation. Therefore, the force properties that depend on the consistent shape and tension state will change in the deformation state. Ideally,constant force springs will exert a consistent force over a given range of motion, repeating without changing. In fact, constant force springs, like all elastomers, are limited...