Jahns hydraulik motor Germany Jahns hydraulik model Jahns hydraulik price

Jahns hydraulik motor is a type of motor that can be used in flammable and explosive environments, producing no electrical sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and natural gas, petrochemical, and chemical industries. In addition, they are widely used in textiles, metallurgy, urban gas, transportation, grain and oil processing, papermaking, pharmaceuticals, and other sectors. As primary power equipment, explosion-proof motors are typically used to drive pumps, fans, compressors, and other transmission machinery.

Jahns hydraulik motor fault analysis

The influencing factors and inspection methods for difficulty in cold starting and hot starting in motor faults are largely similar. Regarding mixture concentration, there are two conditions: mixture too lean and mixture too rich. Faults affecting fuel supply may occur in fuel quality, fuel pump, fuel filter, fuel pressure regulator, cold start system, injectors, and water temperature sensor; faults affecting air intake mostly manifest as clogged air filters, air intake system leaks, and idle speed control failures.

Jahns hydraulik motor excitation method

Motor excitation method refers to the method of generating a magnetic field in rotating electrical machines. DC motor excitation methods are divided into four types: separately excited DC motor, shunt-excited DC motor, series-excited DC motor, and compound-excited DC motor. A DC motor in which the field winding has no connection to the armature winding and is supplied by another DC power source is called a separately excited DC motor; permanent magnet DC motors can also be regarded as separately excited or self-excited DC motors, generally referred to directly as permanent magnet excitation. In a shunt-excited DC motor, the field winding is connected in parallel with the armature winding. As a shunt generator, the terminal voltage generated by the motor itself supplies the field winding; as a shunt motor, the field winding and armature share the same power source, and its performance is identical to that of a separately excited DC motor. In a series-excited DC motor, the field winding is connected in series with the armature winding and then connected to the DC power source. The excitation current of this DC motor is the armature current. A compound-excited DC motor has two field windings: shunt and series. If the magnetomotive force produced by the series winding is in the same direction as that produced by the shunt winding, it is called cumulative compound excitation. If the directions of the two magnetomotive forces are opposite, it is called differential compound excitation. DC motors with different excitation methods have different characteristics. Generally, the main excitation methods for DC motors are shunt, series, and compound; the main excitation methods for DC generators are separate, shunt, and compound.

Jahns hydraulik motor structure

The structure of a motor consists of two main parts: the stator and the rotor. The stationary part of a DC motor during operation is called the stator. The main function of the stator is to generate a magnetic field, and it consists of the frame, main poles, commutating poles, end shields, bearings, and brush assembly. The rotating part during operation is called the rotor. Its main function is to generate electromagnetic torque and induced electromotive force, serving as the hub for energy conversion in the DC motor, so it is often referred to as the armature. It consists of the shaft, armature core, armature winding, commutator, and fan. The function of the main pole is to generate the air gap magnetic field. The main pole consists of two parts: the main pole core and the field winding. The core is generally made by stacking and riveting silicon steel sheet laminations with a thickness of 0.5mm to 1.5mm. It is divided into the pole body and the pole shoe. The part on which the field winding is placed is called the pole body, and the widened lower part is called the pole shoe. The pole shoe is wider than the pole body, which not only adjusts the distribution of the magnetic field in the air gap but also facilitates fixing the field winding. The field winding is wound with insulated copper wire and placed on the main pole core. The entire main pole is fixed to the frame with screws. The function of the commutating pole is to improve commutation and reduce commutation sparks that may occur between the brush and the commutator during motor operation. It is generally installed between two adjacent main poles and consists of the commutating pole core and commutating pole winding. The commutating pole winding is wound with insulated wire and placed on the commutating pole core. The number of commutating poles is equal to the number of main poles. The outer shell of the motor stator is called the frame. The frame has two functions: first, it is used to fix the main poles, commutating poles, and end shields, providing support and fixation for the entire motor; second, the frame itself is part of the magnetic circuit, forming the magnetic path between the poles. The part through which magnetic flux passes is called the yoke. To ensure sufficient mechanical strength and good magnetic conductivity, the frame is generally made of cast steel or welded steel plates. The brush assembly is used to introduce or extract DC voltage and DC current. The brush assembly consists of brushes, brush holders, brush rods, and brush rod seats. The brushes are placed in the brush holders and pressed by springs to ensure good sliding contact between the brushes and the commutator. The brush holders are fixed to the brush rods, which are mounted on a ring-shaped brush rod seat. They must be insulated from each other. The brush rod seat is mounted on the end shield or bearing inner cover. Its circumferential position can be adjusted and fixed after adjustment.

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