SU1221369A1 - Guideway for hoistable vessel - Google Patents

Description

The invention relates to mine construction and can be used in the reinforcement of vertical mining shafts of the mining industry.

The aim of the invention is to improve the reliability of the vessel-arm system by providing the same conductor compliance with the horizontal moving load on the supports and in the span between them.

FIG. 1 shows the design of a conductor for a lifting vessel; Fig, 2-4 - plot displacement

the guide and the beam and the total epra movement of the conductor; figure 5 is a conductor (option); in fig. 6 — node I in FIG. five; in fig. 7 — node I in FIG. five; in fig. 8 is a section A-A in FIG. 6; in fig. 9 is a cross-section BB and FIG. 7; in fig. 10 - conductor (option); in fig. 11 is a sectional view BB in FIG. ten.

The conductor for the lifting vessel, including beam 1 and guide 2, is connected to the lining of the trunk 3 by supports 4. Beam 1 and guide 2 are interconnected at points located in the middle between supports 4 by means of links 5. Distances between the supports 4, beams 1, as well as the spacing between the connections 5 are constant and equal to each other. The horizontal moving load T from the vessel guides is applied to the guide 2. The rigidity of the system is taken from the condition of equality of the horizontal displacements of the conductor at points a and ff from the force T applied alternately at points d and S of the guide 2 lA and d2a + d1a; ,(one)

where u2a is the displacement of the guide

at point a relative to bond 5 from the force T applied at point a;

41a shows the displacement of the link 5 apart from the support 4 from the force T applied at the point a;

D1b - movement of the beam 1 at point 6 relative to the support 4 from the force T applied at point 5;

,,

lijjj rz

u1a K2T--; fc j

D1b K; G-A1-;

P., moments of inertia of beam 1 and guide 2;

E, E is the modulus of elasticity of the conductor material ();

K, K2 are coefficients depending on the type, place of application of the load and the number of spans of the continuous beam (determined from the tables for continuous beams using the Mohr formula or the Lear program on a computer. With this load arrangement, the frameless number of spans and unresolved branches

46 K)

Substituting the values of displacements into formula (1) and reducing all terms by T, 1, E, K, we obtain the equation

one

2 JT from where .1 0,54 3.

Consequently, the constant ductility of the conductor is ensured by the ratio of the rigidities of the continuous

branches - 1.85. one

FIG. 2 shows a plot of the movements of the guide 2 relative to the link 5 from the moving load Tj; in fig. 3 is a diagram of the movement of the links 5 relative to the supports 4 from the moving load T.

When moving the load T from the point O to the point of movement of the guide 2 relative to the link 5 changes from maximum to zero, and the movements of link 5 relative to the supports 4 change from minimum to maximum.

Provided that 1.85 total eju-i

The pa of displacement (compliance) of a conductor under the action of a moving load T, shown in FIG. 4, - straight line, i.e. conductor stiffness characteristic is linear.

If there are two or several connections between the branches of the conductor within the limits between two adjacent troughs, the relationship between the rigid branches and the distance between the connections will be different. If the branches are split, the ratio of stiffness will also be different.

Figures 5-9 illustrate an embodiment of a conductor for a lifting vessel, along which the beam 1 is a box section, the guide 2 is a channel bar. Beam 1 is connected to the shooting of 3 seconds and (.1 my1 supports 4. Guide 2 is connected to beam 1 by link 5 at points located in the middle between supports 4. Guide 2 is in direct contact with vessel guides.

FIG. 10 and 11, an embodiment of the conductor is shown, according to which the beam 1 is connected to the lining of the trunk 3 by the supports 4, the guide 2 is not connected to the support, but connected to the beam at points located between the supports.

The conductor's stiffness characteristic (compliance) is constant over the trunk depth, the conductor's response to frontal or lateral pressure consists of two components, the sum of which is constant, since the rigidity of the conductor branches is selected from the condition of the constant load .

221369Л

When the vessel moves, its guides slide (or roll) along guide 2, the compliance discreteness of which is eliminated (neutralized) by discreteness of beam 1, therefore side jerks are excluded when the guides pass through the supports of the conductor. Due to the twisting of the hoisting rope, eccentricity of the resultant, swing vibrations, etc., the vessel is pressed against one or several guide conductors during movement and influences them in the form of a fifth horizontal moving load, which can have any direction in the horizontal plane. The constancy of the conductor compliance to the vessel on it excludes

20 the possibility of parametric resonance in the vessel-reinforcement system, which increases the speed and, consequently, the lifting performance by 1.5-2 times.

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Compiled by V.P. nov Editor T.Miteiko Tehred V.Kadar Corrector I.Erdeyi

Order 1563/40 Circulation 470 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, Proektna St., 4

Claims (1)

CONDUCTOR FOR LIFTING VESSEL, including a vertical hollow guide and supports, characterized in that, in order to increase the reliability of the system, the reinforcement vessel by providing equal conductor flexibility to the horizontal moving load on the supports and in the span between them, the vertical guide is equipped with a beam installed with a gap inside it and rigidly connected to the supports, while the vertical guide is connected to the beam in the middle of the span between the supports. go to co cx> 00 t