RU104228U1 - SHOCK ACTUATOR WITH KINETIC ENERGY RECOVERY - Google Patents

Abstract

 A shock drive with a kinetic energy recuperator, consisting of a rotational to translational conversion mechanism made in the form of a differential and a crank assembly, a gearbox, a waveguide tool, a striker located in the same axis as the waveguide tool, a crank assembly made in the form of a kinetic energy recuperator associated with the differential by means of crank shafts pivotally connected by connecting rods to the striker, and inertial m are located at the ends of the cranks Assy and their balances, while an overrunning clutch is installed on the axis of the engine shaft, characterized in that a flywheel is installed between the clutch and the differential on the shaft with the engine, which allows to reduce the loss of part of the stored kinetic energy of the drive masses during the differential output on the hammer the rotation frequency, as well as between the striker and the tool, a cylindrical waveguide is installed, which helps to prolong the impact on the tool and increase the efficiency.

Description

The drive is used in machines and mechanisms of perforators, drilling machines, hammers, hammers, stands for testing products for impact loads.

A drive of shock-rotary machines is known, comprising a tool rotation mechanism made in the form of a differential, the drive gear of which is mounted on the drive shaft, satellite axles are installed in the cylinder walls, and the mechanism for converting rotational motion into reciprocating is associated with one of the satellites, in addition, a groove is made on the cylinder, in which an eccentric of the housing is placed during shock operation, while a coupling half is mounted on the drive shaft, which is axially moved interaction and with another coupling half, which is mounted on the cylinder, [1].

This drive does not have a kinetic energy recuperator in the form of special inertial masses and their counterweights, and the mechanism for converting rotational motion into reciprocating is not dynamically balanced.

Closest to the claimed utility model is a design in which a rotary-shock drive consists of a mechanism for converting rotational into translational, made in the form of a differential and a crank assembly, gearbox, waveguide tool connected to the motor shaft through a gearbox, a hammer, located in the guide on the same axis with the waveguide tool, the crank assembly is made in the form of a kinetic energy recuperator associated with the differential by means of curvature shafts studs pivotally connected by connecting rods to the striker through the spring, and at the ends of the cranks inertial masses and their balances are located, while an overrunning clutch is installed on the axis of the motor shaft, [2].

The disadvantage of such a drive is that due to the overrunning clutch, a significant part of the accumulated kinetic energy of the drive masses is lost in the process of the differential reaching the hammer's impact, and also the tool impact energy is not high enough.

The objective of the utility model is to increase the speed of the striker and the impact energy of the instrument ..

The problem is solved due to the fact that the shock drive with a kinetic energy recuperator consists of a rotational to translational conversion mechanism made in the form of a differential and a crank assembly, a gearbox, a waveguide tool connected to the motor shaft through a gearbox, a striker located in the guide on the same axis as the waveguide tool, the crank assembly is made in the form of a kinetic energy recuperator associated with the differential by means of crank shafts, pivotally connected by connecting rods to the striker, and at the ends of the cranks inertial masses and their balances are located, while an overrunning clutch is installed on the axis of the engine shaft, and a flywheel is fixed between it and the differential on the same shaft as the engine. In addition, a cylindrical waveguide is installed between the striker and the tool.

The essence of the design of the utility model is illustrated in the drawing.

The shock drive with a kinetic energy recuperator contains an engine 1, a coupling 2 is connected to the shaft, on the other side of the coupling 2 there is a gear 3 and an overrunning clutch 10. The wheel 7 is engaged with the wheel 8 mounted on the tubular shaft inside which the shaft is located from the clutch 2 to the conical wheel of the differential 9 having two crank shafts, at the ends of the latter there are inertial masses 11 and their counterweights 12; the cranks are pivotally connected by connecting rods 13 and the striker 14, which is located in the guide along the same axis with the cylindrical waveguide 15, is spring-loaded to the tool 6. Between the overrunning clutch 10 and the differential 9, a flywheel 5 is mounted on the shaft of the engine 1.

A shock drive with a kinetic energy recuperator operates as follows.

The moment from the engine 1 through the clutch 2 is transmitted through the wheels 3,4,7 and 8 to the tubular shaft of the differential 9, the housing of which acquires an angular velocity ω ₁ . The crank shaft to the position shown in the figure has an angular speed of the crank cocking ω _y = ω ₀ -ω ₁ . Then, under the action of centrifugal forces from the angular velocity ω _{1, the} inertial masses 11 and 12 sharply increase their speeds - this is allowed by overrunning clutch 10; through the connecting rods 13 and the spring (elastic element) the firing pin 14 is accelerated to a maximum impact speed, interacting at that moment with the waveguide 15 pressed against the tool 6. The flywheel 5 significantly increases the speed of the firing pin 14, because when the clutch 10 is triggered and the moment of inertia of the differential 9 increases during acceleration, the striker 14 does not allow the shaft 1 to reduce angular velocity due to earlier inertia. Moreover, the maximum engine speed ω ₀ allows the flywheel 5 to accumulate the greatest kinetic energy due to rotation.

The shock drive with a kinetic energy recuperator allows you to accumulate the kinetic energy of parts 3-13, 5 for several revolutions (or tens of revolutions), because rotation frequency

ω ₀ >> ω _y = ω ₀ -ω ₁ ,

where ω ₀ is the angular velocity of the motor shaft;

ω _y - the angular velocity of rotation of the cranks with inertial masses 11 and balances 12;

ω ₁ - the angular velocity of the differential 9;

- the average frequency of beats per second;

π = 3.14.

Inertial masses 11 are dynamically balanced by counterweights 12, i.e. may be the same or different in magnitude, but in the latter case, their weight is inversely proportional to the distances to the axis of rotation.

The connecting rods 13 are completely symmetrical with respect to the axis of rotation ω ₁ at any moment of time, therefore, as well as cranks with inertial masses 11 and balances 12 are dynamically balanced, although the angular speeds ω _{y of the} cranks are directed in different directions.

The presence in the system of strikers - a waveguide tool 15 of a cylindrical shape and a certain length, the main impact is due to the dynamic component of the applied load, which is formed in the shock system and is communicated to the point of contact of the waveguide and the tool in the form of a prolonged shock pulse. In this case, the preliminary static preload of the waveguide to the instrument allows more fully use the energy of the shock pulse.

The energy supply of the shock pulse to the contact zone of the waveguide and the tool through an intermediate link (waveguide) can dramatically increase the efficiency of energy transfer from the striker to the tool by about 38 ... 40%, due to the rational use of the energy of wave processes occurring in the waveguide and increase the efficiency.

Instead of one pair of gears for wheels 7 and 8, there may be a gearbox so that the drive operates in hammer or hammer modes, i.e. as the shock frequency increases, the energy of a single shock pulse decreases; the gearbox is not shown in the drawing.

The gearbox, consisting of gearing 3-4 wheels in combination with other drive units, allows you to get an effective shock mode on the tool of a puncher or a drilling machine.

Information sources

1. V.L. Pyatov, Yu.P. Shishulin, V.N. Adamov, G.T. Basennik and V.D. Rodionov. Rotary shock machine. A.s.SU No. 681183. Bull. No. 31 dated 08/25/79.

2. B.N. Stikhanovsky. Rotary Impact Drive. A.s.RU No. 2285104 C1. Bull. No. 28 dated 10/10/2006.

Claims (1)

A shock drive with a kinetic energy recuperator, consisting of a rotational to translational conversion mechanism made in the form of a differential and a crank assembly, a gearbox, a waveguide tool, a striker located in the same axis as the waveguide tool, a crank assembly made in the form of a kinetic energy recuperator associated with the differential by means of crank shafts pivotally connected by connecting rods to the striker, and inertial m are located at the ends of the cranks Assy and their balances, while an overrunning clutch is installed on the axis of the engine shaft, characterized in that a flywheel is installed between the clutch and the differential on the shaft with the engine, which allows to reduce the loss of part of the stored kinetic energy of the drive masses during the differential output on the hammer the rotation frequency, as well as between the striker and the tool, a cylindrical waveguide is installed, which helps to prolong the impact on the tool and increase the efficiency.