Analysis of the single toggle jaw crusher kinematics

This paper sets out to perform a static force analysis of the single toggle jaw crusher mechanism and to obtain the force transmission characteristics of the mechanism. In order to obtain force transmission metrics that are characteristic of the structure of the mechanism, such influences as friction, dead weight, and inertia are considered to be extraneous and neglected. Equations are obtained by considering the balance of forces at the moving joints and appropriately relating these to the input torque and the output torque. A mechanical advantage, the corresponding transmitted torque, and the variations thereof, during the cycle of motion of the mechanism, are obtained. The mechanical advantage that characterizes the mechanism is calculated as the mean value over the active crushing stroke of the mechanism. The force transmission characteristics can be used as criteria for the comparison of different jaw crusher mechanism designs in order to select the most suitable design for a given application. The equations obtained can also be used in estimating the forces sustained by the components of the mechanism.

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“…Oduori et al [19] analysed the kinematics of the single toggle jaw crusher, as modelled in Figure 1, and found the following expression:…”

Section: A Review Of the Single Toggle Jaw Crusher Kinematicsmentioning

confidence: 99%

Analysis of the Single Toggle Jaw Crusher Force Transmission Characteristics

Oduori

Munyasi

Mutuli

2016

Journal of Engineering

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“…This machine was developed in the year 1857 (Patil and Desale [1] ) and was designed for crushing of medium and high hardness materials (Palmström [2] ). In the crushers, fast-wearing parts are the crushing plates; this is mainly due to the way the crusher works Bajorek et al, [3] Donovan, [4] Jinxi et al, [5] Nowak and Gawenda, [6] Napier-Munn et al, [7] Oduori et al, [8] Zawada and Pawlak, [9] Zeng and Forssberg, [10] properties of the crushed material and cracking process of the feed Theron and Aldrich, [11] Tromans. [12] This is the reason why it is fully justified to study the shape of the plates, because this allows to improve the crushing process parameters.…”

Section: Introductionmentioning

confidence: 99%

Application of The New Shape Crushing Plate in Machine Crushing Processes

Ciężkowski

Maciejewski

Bąk

et al. 2020

Studia Geotechnica Et Mechanica

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The results of studies of the crushing process in a double toggle jaw crusher are presented. This process was carried out on six sets of crushing plates. The first three of them are used in industrial crushers – plates with a flat working surface and a triangular profile (in this work, under consideration were profiles with teeth angle γ = 90°). The fourth and fifth type refer to plates with a variable pitch t and teeth height with a triangular shape of the teeth. In the sixth solution, plates with variable pitch and width of the wedged teeth are proposed.The results of the basic process parameters are shown, that is, average degree of fineness n, technical performance Wt, crushing energy L and crushing force F, sieve analysis of crushing product. The obtained results are the basis for the assessment of the suitability of various types of plates, especially plates with a new profile, which have an altered shape in comparison with the plates used in crushers so far.The crushing tests were carried out with the same dimension of outlet slot er = 24 mm, close to the pitch size for plates with triangular profile. Tests were performed on the “Mucharz” sandstone. Samples from a series of blocks of different size and geometric shape were prepared. This work also presents feed mass influence on crushing process efficiency.The plates with variable pitch and width of teeth are beneficial because of lower crushing force and energy.

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“…Oduori et al 8 reviewed publications by Ham et al 2 as well as Martin 3 that presented the double-toggle jaw crusher as an example of a toggle mechanism. Both these publications did not perform a kinematical analysis of the crusher.…”

Section: Introductionmentioning

confidence: 99%

“…Both these publications did not perform a kinematical analysis of the crusher. Oduori et al 8 also reviewed a publication by Erdman and Sandor 4 that presented the double-toggle jaw crusher mechanism, as an example problem in the determination of mechanical advantage, but did not perform a kinematical analysis of the mechanism.…”

Section: Introductionmentioning

confidence: 99%

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The kinematics and mechanical advantage of the double-toggle jaw crusher

Oduori

Mutuli

Munyasi

2017

Proceedings of the Institution of Mechanical Engineers, Part C:

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The purpose of this article is to obtain a comprehensive mathematical description of the kinematics of a double-toggle jaw crusher. The driving mechanism of the crusher is modeled as a planar six bar linkage. Two closed position vector loops that characterize the configuration of the mechanism are used to derive expressions for the angular position, velocity and acceleration of the moveable jaw. Dimensional data of a typical double-toggle jaw crusher are used in the derived mathematical expressions to demonstrate their application. Moreover, starting with the equation for the angular velocity ratio of the moveable jaw, with respect to the input crank, an expression for the ideal mechanical advantage of the crusher is derived. The expressions derived in this paper provide the foundation for further investigations into the mechanics and the design of the double-toggle jaw crusher.

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Analysis of the single toggle jaw crusher kinematics

Cited by 11 publications

References 3 publications

Analysis of the Single Toggle Jaw Crusher Force Transmission Characteristics

Analysis of the Single Toggle Jaw Crusher Force Transmission Characteristics

Application of The New Shape Crushing Plate in Machine Crushing Processes

The kinematics and mechanical advantage of the double-toggle jaw crusher

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