SU1620345A1 - Turnstile - Google Patents

Abstract

The invention relates to railway transport and relates to the construction of turnstile and fastening devices for transporting goods by rail and can be used to transport, for example, lengthy building structures. The purpose of the invention is to increase the safety of the transported goods by smoothly damping longitudinal inertial loads. The turnstile contains upper 1, lower 7 and intermediate 3 frames. The upper frame 1 is connected to the intermediate 3 pivot 2. The interacting upper surface of the frame 7 and the lower surface of the frame 3 are made with inclined and horizontal sections. The interface between the horizontal and inclined sections of the lower and intermediate frames, respectively, is in the form of cylindrical surfaces, the cross section of which by the vertical longitudinal plane is a smooth curve described by the equation. The radius of curvature of the mating cylindrical surface for the intermediate frame is less than the radius of curvature of the mating cylindrical surface of the lower support frame at each point of contact of these surfaces. 1 hp ff, 3 il o b)

Description

FIG g

The invention relates to railroad transport and concerns the conformation of a turnstile fastening device for transporting goods by rail and can be used to transport, for example, lengthy building structures.

The purpose of the invention is to increase the safety of the transported goods by smoothly damping longitudinal inertial loads.

Figure 1 shows the placement and fastening of the transported cargo on the coupling of two platforms, a general view; figure 2 - node I in figure 1; Fig. 3 shows the graphs of the functions of the matching curves of the horizontal and inclined faces of the lower and intermediate frames. one

The device comprises a movable upper frame 1, connected by a pin 2 with an intermediate frame 3. The lower surface of frame 3 is made in the form of horizontal 5 and inclined 6 sections interconnected by means of cylindrical sections 4. The specified surface of the frame 3 is in contact with the upper surface of the lower frame 7 along the corresponding horizontal 8, inclined 9 and cylindrical 10 sections. The frame 7 is rigidly fixed on the platform 11. The load 2 is placed on the upper frame 1.

The cylindrical portions of the upper and lower surfaces of frames 7 and 3, respectively, are constructed according to the following dependencies.

For mating areas of the lower frame (for the intermediate frame, the reasoning; days are similar). In FIG. 3, T.A is the junction point of the horizontal and curvilinear portions of the lower frame; , ToV is the junction point of the curvilinear and inclined sections of the lower frame; cf - the angle of inclination of the inclined sections of the lower frame; Xp is the magnitude of the projection on the OX of the conjugating curve AB of the lower frame; Zu is the magnitude of the projection on OZ of the conjugating curve AB of the lower frame.

The task is to find a plan curve Z (X) that would have the following properties: For point A.

At the conjugation point A, the horizontal segment and the conjugate curve must have the same applicate, i.e. when X About Z 0.

2. The vertical projection of the velocity V in T.A must be the same for the mating portions. For horizontal stretch

w - v - | -. about,

whence for the second section we get the condition:

x - about 2 ° dx

about

3. At the interface point of sections A, the vertical projection of the inertia force Fin must be the same for both sections. For the first t

plot

ri 0; therefore for the second

the plot must be done uelojj 7

out: at - .X 0 0.

For point B in a similar way, we obtain the following three conditions:

4, 5, 6,

Z (X0) - Zfl; dZ (X0) / dX tgCf 6i; d «Z (X0) / d 0 i (gr

Based on the above six conditions (1) (6), we construct the analytical dependence of the curve as a function of X. We represent Z (X) as a polynomial of order with unknown coefficients a (;, i 0,5:

Z (X) a + a, X + a2X2 + a3X3 +.

+ a, h

+

Of these conditions, we have: f a2 - 0;

five

but

102o

ho

6Zo

x Ao

4oi

x "

7tf

H

15Zo

306 g Ao

and therefore

and you

false 55

For the intermediate frame, the analytical dependency is built in the same way, but with the only difference

that X and ZQ are chosen smaller ps compared with the corresponding XC of the lower frame so that

and

7, dl

the radius of curvature of the conjugation of the horizontal and inclined sections of the intermediate frame was less than the radius of curvature of the conjugation of the horizontal and inclined sections of the lower frame.

The device works as follows.

For small longitudinal effects, the intermediate frame 3 with its horizontal face 5 moves along the horizontal face 8 of the lower support frame 7. In the event of significant longitudinal effects (in particular, during maneuvering and hump operations), the intermediate frame 3 with its matching cylindrical surface 4 will come into contact with the mating cylindrical surface 10 of the lower frame 7. In this case, the interaction of these cylindrical surfaces will occur without a collision, smoothly, since their shape was chosen from the condition equality to zero inertial influences at point A as a gateway to the horizontal section and for interfacing curve (condition 3). As the mutual displacements of the intermediate 3 and lower 7 frames increase, the movement along the adjoining areas will end and the interaction of the inclined faces 6 and 9 will begin. The transition from moving along cylindrical surfaces to c-movement along inclined faces also occurs smoothly, without breaking the derivatives down to second order inclusive, which follows from the conditions for finding the analytical dependence of the adjoint curve at point B.

1 At the end of the process of smooth damping of the shock impulse, the lifting of the load 12 ends and the mobile frame 1 returns to its original position under the action of the mass of the transported load 12, which ensures that the device is ready for operation in new car collisions.

Claims (2)

1. A turnstile containing a bottom frame rigidly fixed on the platform, the upper surface of which in the vertical longitudinal plane is made with sections inclined to each other, conjugated with a horizontal section, intermediate O frame, the bottom surface of which made with inclined and horizontal sections for interaction with the upper surface of the lower frame, and the upper frame for placing the cargo, 5 connected to the intermediate frame by a pivot, characterized in that, in order to increase the safety of the transported cargo by ensuring smooth damping of longitudinal inertial loads, the junction between the horizontal and inclined sections of the respective surfaces of the lower and intermediate frames is made in the form of cylindrical surfaces with a transversely horizontal forming and a guide located in the vertical longitudinal plane described by the following equation: 0 thirty Z (X) aX3 + cXJ five 0 five 0 10Zo H where is a , 7 b xG 6Zo 404. ug ho  ; Zr i Ao 3 С ХГ ХТ 06 - tangent of the angle of inclination of the sections of the lower n intermediate frame; X 0 is the magnitude of the projection of the conjugating curve on the OX axis; Z 0 is the magnitude of the projection of the conjugating curve on the OZ axis. 2. Turnstile pop.1, which is different from the fact that the radius of curvature of the mating cylindrical surface of the intermediate frame is less than the radius of curvature of the mating cylindrical surface of the lower frame at each point of contact of these surfaces. 1 12 Zj Fia1 ZM - dJ ( z (x) ax3 + 6xtl + cj (s Fig.Z