50 results about "Beam balance" patented technology

The invention determines density of a sample while the sample is immersed in a gaseous medium having variable density. The apparatus includes a chamber for containing the gaseous medium and the sample, means for selectively varying the density of the gaseous medium over a range of densities, and means for producing electrical signals related to the density of the gaseous medium. In the chamber is a balance beam having a sample pan at a first end and a coil assembly at an opposing second end. Also at the second end of the beam is a first counter-weight having a volume and mass which is substantially equivalent to the volume and mass of sample pan, and which creates a moment that is substantially equivalent to the moment created by the sample pan. At the first end of the beam is a second counter-weight having a volume and mass which is substantially equivalent to the volume and mass of the coil assembly, and which creates a moment which is substantially equivalent to the moment created by the coil assembly. A magnet assembly is disposed adjacent to and magnetically interacts with the coil assembly. A controller provides a coil current to the coil assembly, thereby generating a magnetic field which interacts with the magnet assembly. According to the invention, the interaction between the magnetic field of the coil assembly and the magnet assembly applies a force to the second end of the beam to keep the beam balanced as the density of the gaseous medium in the chamber is varied over the range of densities. A computing device receives the electrical signals related to the density of the gaseous medium and the electrical signal related to the coil current, and calculates the density of the sample based thereon.

The invention discloses a bidirectional hydraulic jack. A through cavity is formed in a cylinder barrel. The two ends of the cylinder barrel are provided with a first guide sleeve and a second guide sleeve respectively. The side wall of the cylinder barrel is provided with a first connector base, a second connector base and a third connector base which are communicated with the through cavity. A first piston rod and a second piston rod are arranged in the cylinder barrel and stretch out of a middle opening in the first guide sleeve and a middle opening in the second guide sleeve respectively, a first piston and a second piston are arranged on the outer wall of the first piston rod and the outer all of the second piston rod respectively, the first piston is located between the first connector base and the second connector base in the cylinder barrel, the second piston is located between the second connector base and the third connector base, and sealing pieces are arranged between the pistons and the cylinder barrel and among the guide sleeves and the piston rods respectively. The hydraulic support top beam balance keeping device is compact in whole structure, reasonable in design, capable of achieving bidirectional hydraulic support, stable and reliable in structure in the repeated use process and high in mechanical accuracy.

The invention discloses a self-adaptive leveling method and device of a hydraulic support top beam. A main controller monitoring the numerical value of a tilt sensor in real time and feeding results back to a hydraulic support electro-hydraulic system is adopted in the process that a support is controlled by the hydraulic support electro-hydraulic system to lift a column, real-time adjustment is carried out by the main controller according to the angle of tilt of the top beam, a jack starts to be adjusted and balanced when setting load is applied by the stand column, a blind-action probing method is adopted, the value of the tilt sensor is monitored in real time in the motion probing process so as to detect the state of the top beam, and when the numerical value of the tilt sensor is within a top beam balance error range, leveling is completed. By means of the self-adaptive leveling method and device, automatic leveling control of the hydraulic support top beam can be achieved under the existing automatic batch control and automatic machine following control modes on the premise that an existing mechanical hydraulic equipment structure is not changed.

The invention discloses a bidirectional hydraulic jack. A through cavity is formed in a cylinder barrel. The two ends of the cylinder barrel are provided with a first guide sleeve and a second guide sleeve respectively. The side wall of the cylinder barrel is provided with a first connector base, a second connector base and a third connector base which are communicated with the through cavity. A first piston rod and a second piston rod are arranged in the cylinder barrel and stretch out of a middle opening in the first guide sleeve and a middle opening in the second guide sleeve respectively, a first piston and a second piston are arranged on the outer wall of the first piston rod and the outer all of the second piston rod respectively, the first piston is located between the first connector base and the second connector base in the cylinder barrel, the second piston is located between the second connector base and the third connector base, and sealing pieces are arranged between the pistons and the cylinder barrel and among the guide sleeves and the piston rods respectively. The hydraulic support top beam balance keeping device is compact in whole structure, reasonable in design, capable of achieving bidirectional hydraulic support, stable and reliable in structure in the repeated use process and high in mechanical accuracy.

The invention discloses a balancing hanging beam used for blower fan single blade suspension setting. The balancing hanging beam comprises a hanging device T-shaped beam, a lateral travelling mechanism, longitudinal travelling mechanisms, a lateral beam sleeve, and longitudinal beam sleeves; the hanging device T-shaped beam comprises a lateral beam and a longitudinal beam; one end of the lateral beam is connected with the middle part of the longitudinal beam; the lateral beam sleeve can be arranged on the lateral beam along a lateral beam linear direction via slide installation; the lateral travelling mechanism is arranged on the top part of the lateral beam; the longitudinal beam sleeves comprise a first longitudinal beam sleeve and a second longitudinal beam sleeve; the first longitudinal beam sleeve can be arranged on one end of the longitudinal beam along a longitudinal beam linear direction via slide installation, and the second longitudinal beam sleeve can be arranged on the other end of the longitudinal beam along a longitudinal beam linear direction via slide installation; the longitudinal travelling mechanisms comprise a first longitudinal travelling mechanism and a second longitudinal travelling mechanism; and the first longitudinal travelling mechanism is arranged on one end of the longitudinal beam, and the second longitudinal travelling mechanism is arranged on the other end of the longitudinal beam. The balancing hanging beam is suitable for blower fan single blade installation or disassembly high above the ground, and is excellent in stability and safety.

The invention provides a heavy bi-functional press movable beam balance control loop with returning and loading functions. The heavy bi-functional press movable beam balance control loop comprises an oil tank, a variable pump oil supply sub-loop, a left inlet oil control sub-loop, a right inlet oil control sub-loop, an upper balance cylinder unloading sub-loop, a lower balance cylinder unloading sub-loop, an upper balance cylinder and a lower balance cylinder which is arranged on the lower surface of a movable beam and arranged at the position in corner symmetrical with the upper balance cylinder. The variable pump oil supply sub-loop communicates with the upper balance cylinder and a lower adjusting cylinder through the left inlet oil control sub-loop, and the variable pump oil supply sub-loop communicates with the lower balance cylinder and an upper adjusting cylinder. The heavy bi-functional press movable beam balance control loop can carry out balance control over the movable beam and can carry out returning control or auxiliary loading on the movable beam when balance control is not carried out so that the technical problems that an existing heavy press movable beam balance loop only meets the low-speed movement requirement of the movable beam during die forging and cannot meet the high-speed requirement of the movable beam during perpendicular extruding, the function is singular, and the utilization rate is low can be solved.

The present invention relates to electricity-saving technology of various beam type oil extractor in oil field. An energy-saving startup wheel of oil field oil extractor which can prolong starting time, decrease equipped capacitor and a method of energy-saving are disclosed. The startup wheel includes: adjustable mechanical limit twist member placed in the wheel case, non-rigid connection betweenwheel case and electrical machine shaft. Method: computing new electrical machine minimum theoreticl horsepower by using oil extractor static twist resistance, selecting average load ratio, selectinglittle capacity new electrical machine with high slip ratio, computing oil extractor power regulated by flywheel; computing startup wheel outer dimension, adjusting startup wheel limit-torsional moment;determining flywheel minimum inertia to design flywheel; correcting static twist resistance chart according to increased additional weight number on the beam, verifying average load ratio of new electrical machine. Because the invention adopts startup wheel, flywheel, beam balancing and selecting corresponding new electrical machine, electricity-saving ratio lies in 30-50% is obtained in economical, maximum, safe and reliable, and comparing with the present technology, it induces the installation power reducing greatly 1 / 3-1 / 4.

The invention relates to a self balance energy storage oil extractor, which has the technical scheme that the self balance energy storage oil extractor mainly consists of a walking beam balance system, a crank balance system, a lever lifting system and a motive power lifting system, wherein the walking beam balance system is fixed on one end of a base of the oil extractor, the other end of a walking beam is connected with the crank balance system through a crank connecting rod, the top ends of a balance block and a first crank are connected with the lever lifting system through steel ropes, the lever lifting system is connected with the motive power lifting system through steel ropes, a balance transmission wheel is connected with a balance transmission sub wheel in the motive power lifting system through a balance transmission wheel chain, the kinetic energy generated by free falling of a rod string in an oil well when the oil extractor descends is converted into the kinetic energy of lifting the balance block and the first crank, and the potential energy of the balance block is stored. The invention has the advantages that the self kinetic energy of the system is fully utilized for completing the potential energy supplementation, and the auxiliary motor motive power is furthest reduced, so the effect of energy saving is reached.

The invention relates to a single-pendulum torque-variable balance beam pumping unit. There is a single-pendulum device at the upper end of the beam. A rack guide rail is fixed in the middle of the support of the single-pendulum device. A motor is fixedly connected to the middle of the swing rod. The motor can It moves back and forth on the rack guide rail; it also includes a controller, which detects the load through the controller, controls the motor, and then controls the hem, so that the balance load generated by the hem balance weight can change in real time according to the balance load required by the motor, effectively It plays the role of "shaving peaks and flat valleys", keeps the final load of the motor constant, greatly improves the efficiency of the motor, and has a remarkable energy-saving effect.

A device for identifying gold and silver jewellery is disclosed that includes a beam balance and an opening syringe. The syringe is connected with conduit and gripper, a pallet for loading water is hung at the two ends of the crossbeam of beam balance, two hooks which could hang jewellery are mounted on the right side of the support bracket, the distance from the hook to the support bracket based on the ratio of the distance from the left pallet to the support bracket equals with the ratio between the water density and the gold or silver density. Then balanced relation of unequal-arm lever is adopted to identify the jewellery with the proportional relation of weight between the gold or silver and water with the same volume. Without damage of jewellery, it can identify the jewellery correctly by limited operations.