Topic
Working mass
About: Working mass is a research topic. Over the lifetime, 16 publications have been published within this topic receiving 44 citations.
Papers
Patent•
7 Sep 2001
TL;DR: In this article, the displacement of the end of the set of springs linked to the crank drive and the counterweight are offset relative to one another by 180° minus a phase shift derived from the construction parameters of the sets of springs.
Abstract: A working tool, in particular a soil rammer or a hammer, has two masses that may be linearly moved back and forth with respect to one another, namely a top mass which comprises a driving motor and a ramming or striking working mass which can be moved by the motor relative to the top mass by means of a crank drive and a set of springs. In order to reduce as much as possible the displacement of the top mass, an additional counterweight can be moved by the motor over at least a large part of the path of displacement of the working mass in the opposite direction thereto. The displacement of the end of the set of springs linked to the crank drive and the displacement of the counterweight are preferably offset relative to one another, with respect to the crank angle, by 180° minus a phase shift derived from the construction parameters of the set of springs.
11 citations
Patent•
7 Jul 1999
TL;DR: In this article, a working device, especially a ramming device for compacting soil, comprises a housing which belongs to an upper mass, and has a working mass which can be linearly driven back and forth with regard to the upper mass.
Abstract: A working device, especially a ramming device for compacting soil, comprises a housing which belongs to an upper mass, and has a working mass which can be linearly driven back and forth with regard to the upper mass. The working mass is linearly guided via a guide cylinder which is fastened to the housing with elastic mobility. The transfer of bounce impacts acting upon the working mass to the upper mass can be effectively reduced by the elastic mobility of the guide cylinder with regard to the housing.
9 citations
1 Jan 2015
TL;DR: In this article, an idea of modernization consists in the increase of technological possibilities by realization of two-frequency resonance office by a change of stiffness and inertia parameters of the two-mass machine.
Abstract: The task of modernization of high-frequency harmonically resonance vibratory table with an electromagnetic drive is considered An idea of modernization consists in the increase of technological possibilities by realization of two-frequency resonance office by a change of stiffness and inertia parameters of the two-mass machine The initial of two-mass system is translated in three-mass, which has two eigenfrequencies of vibrations, which are determined by resiliently and inertial parameters of the system The formula to calculation of stiffness parameter of the additional module is got, based on a task of synthesis of multipleness of eigenfrequencies of the three-mass oscillating system and provide of the two-frequency resonance mode Inertia of oscillating mass on descriptions of acceleration of working mass (maximal value and betweenness by his harmonics value) the influence is studied Models for description of vibrations in the probed oscillation systems, which take into account the chart of feed of electromagnetic vibroexciters, structure of the system, its parameters and influence of load on the mass-damping descriptions of working mass are offered
6 citations
Patent•
3 Jan 1986TL;DR: In this article, a vibrating conveyor has a working mass drivable in vibrations, a counter mass which is also driven via the working mass in vibrations which are transferred to a support or a mounting base.
Abstract: A vibrating conveyor has a working mass drivable in vibrations, a counter mass which is also driven via the working mass in vibrations which are transferred to a support or a mounting base, and a device for dampening or reducing this transmission which includes a plurality of roller bearing elements provided between the vibrating conveyor and a mounting base and each formed as a unit including two bearing shells with running tracks and at least one roller part between the running tracks, wherein the running tracks before and after the roller part is inclined in opposite direction in form of a predetermined curve, and when the counter mass is driven in rotation the counter mass and the mounting base are pressed from one another by the roller bearing element which results in damping relative to the mounting base.
6 citations
Patent•
27 Nov 1991
TL;DR: In this paper, a shaking conveyor and a vibrating system are used to produce a vibration movement, and springs connect the vibration elements to a base, and the natural frequency of working and counter mass are approx. the same as the frequency of the drive.
Abstract: The device has pref. a shaking conveyor, and a vibrating system. This consists of a first element, forming part of a working mass, and fastened to the conveyor, and a second element, forming part of a counter mass. A drive produces a vibration movement, and springs connect the vibration elements to a base.The vibrating system can be used with conveyor devices with different masses. For compensation of differentials, the spring component of at least one spring element can be changed resp. adjusted. The natural frequency of working and counter mass are approx. the same, and/or the same, and/or approx. the same as the frequency of the drive.
4 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2019 | 2 |
| 2018 | 1 |
| 2016 | 1 |
| 2015 | 1 |
| 2013 | 2 |
| 2012 | 1 |