The supporting device

 

(57) Abstract:

The inventive device includes a cargo plate, support plate and intermediate kinematically associated with them and representing a Y-shaped cylinder, inside of which you insert more than one upper and one lower piston, the upper piston kinematically connected with the cargo plate, and the lower piston - with base plate. The upper pistons have on the side facing the fluid, special bevels designed to balance the fluid pressure on the upper and lower part of the body of the cylinder. Pistons have a rubber sealing lip. The lower piston may be replaced by a cover made integral with the support plate. The internal cavity of the cylinder filled with fluid. When installing the cargo on the cargo plate cargo support device produces a pressure on the upper piston, through which the liquid to produce a pressure on the lower piston. Since the cross-sectional area of the lower piston or cover less than the total cross-sectional area of the upper piston, the pressure on the lower piston or the cover and respectively on the lower support plate will be less than in many times, how much the cross-sectional area of the lower piston or cover less plasia in two rows (two in the top row and four, located crosswise in the bottom row). When installing the support device can be deployed on I in this case, the pressure on the baseplate (the role of which is to perform load plate and the base plate will become cargo. In this case, the bearing will increase the load pressure on the abutment surface. 1 C. p. F.-ly, 16 ill.

The invention relates to mechanical engineering and can find application in the automotive, aviation, railway and construction industries.

Known trichodina spherical pair with a tapered pillar containing the shaft in the lower part terminating in a spherical surface, is inserted into the conical hole of the base plate.

A disadvantage of the known support is the inability to change the pressure on the baseplate.

This disadvantage is due to the bearing design.

Also known knife bearing containing a lower base with a flat or spherical surface, installed on it, a triangular prism, fixed centering screws in the holder top cargo plate. Famous knife bearing, as the closest to the technical essence and the achieved beneficial results, taken about the program is the improvement of the bearing by increasing or decreasing the pressure on the abutment surface.

This goal, according to the invention, provided that a triangular prism with holder and centering bolts replaced by an intermediate link, made in the form of Y-shaped power cylinder, inside of which is inserted a rectangular piston with sealing elements, and the lower piston is connected to the lower support plate, and the top two piston kinematically connected with the top of the cargo plate.

In Fig. 1 shows a General view of hydraulic supports; Fig. 2 is a view of the hydraulic bearing to the left, Fig. 3 is a view of the hydraulic bearing top off the cargo plate; Fig. 4 is a view of a hydraulic bearing, elevation, and Fig. 5 is a General view of the bottom of the piston with a partial section; Fig. 6 is a General view of the top of the piston; Fig. 7 is a top view of the upper piston; Fig. 8 - kind support from several top piston, the lower piston which is replaced by a cover made integral with the lower base plate; Fig. 9 is a diagram of the hydraulic supports on the frame of the car; Fig. 10 is a diagram of the hydraulic supports in the plane of Fig. 11 is a diagram of the hydraulic bearing on the crane of Fig. 12 is a diagram of the hydraulic bearing on the helicopter; the scheme of installation of hydraulic supports on Velicescu support, deployed 180aboutFig. 16 is a diagram of the forces acting on the body of the cylinder and pistons.

We offer hydraulic bearing 1 includes a base plate 2 made integral with the rod 3, which bolts 4 is connected with the lower piston 5 having a rectangular cross section and is inserted in the lower part of the Y-shaped cylinder 6, in the upper branch of which is inserted the upper pistons 7 and 8, which also has a rectangular cross-section and through brackets 9 are connected to N-beam 10. Cargo plate 11 with the load 12 is attached to the N-shaped beam by means of brackets 13. The lower part of the cylinder is closed by a cover 14. On the lower piston worn rubber sealing collar 15, and the upper piston - sealing cuff 16 and 17. In the tides of the upper particles cylinder screwed the bolts 18 and 19 that are fixed with their ends in bounding the grooves 20 and 21 of the upper piston. In the lower part of the upper pistons have the wear bevel. Bevels are made in the upward direction and form acute angles with the bottom side surfaces. Cover closing the bottom of the cylinder has an opening 22 for the passage of air. On the side of the cylinder is a tube 23 for pouring liquids. To improve the efficiency of support in the upper part of the cylinder is pentalonia bevels, and the lower piston is replaced by a cover 26, is molded together with the bottom base plate.

The hydraulic work support.

Under the action of gravity R of the load 12, through the loading plate 11 and the N-shaped beam 10, the pressure on the upper pistons 7 and 8. These pistons compress the fluid inside the Y-shaped cylinder 6 with a force F. the pressure of the liquid is evenly distributed over the entire inner surface (cylinders and pistons). As the cross-sectional area of the lower piston 5 is less than the sectional area of the top of the pistons 7 and 8, and the pressure P at the bottom of the piston is less than the pressure force P times how much the cross-sectional area of the lower piston 5 is less than the sectional area of the top of the pistons 7 and 8. The bevels on the upper pistons divide the sections of the cylinder into equal parts l1and l4, l2and l3. Therefore, the force of fluid pressure on these areas mutually balance each other (F2= F3and F4= F5and forces F6and F7acting in the horizontal direction cancel each other (Fig. 16). Thus the housing 6 cylinder fully balanced and the pressure from the upper piston lower piston is transmitted only through the liquid in proportion to the cross-section of the latter. The liquid inside the cylinder salives the Jena grooves 20 and 21 and the screws 18 and 19, by increasing or decreasing the amount of liquid poured into the cylinder. The cylinders may have a round cross-section. The choice of rectangular cross-section of the piston and the cylinder caused by the necessity of obtaining the greatest section of the upper piston. Cuff 15, 16, 17 serve to seal and prevent leakage of liquid from the support.

A calculation.

Given: mass of m= 1000 kg;

The number of top pistons = 2;

The length of the top of the piston l5= 21 cm;

The width of the top of the piston l7= 1/2 l5= 10.5 cm;

Length of the lower piston l6= 14 cm;

The width of the bottom of the piston l8= 1/2 l5= 10.5 cm (Fig. 13);

1. The cross-sectional area of the upper piston:

Stop= l5l7= 21 cm 10.5 cm= 220,5 cm2.

2. The total area of the two pistons (top):

SSociety. century= 2Stop= 2 220,5 cm2= 441 cm2.

3. The cross-sectional area of the lower piston:

Sbottom= l6l8= 14 cm 10.5 cm= 147 cm2.

4. The fluid pressure inside the cylinder:

= m/SSociety. century= of 2.267 kg/s .

5. Fluid pressure on the lower piston.

bottom= Sbottom= of 2.267 kg/cm2147 cm2= 333,249 kg

Thus the pressure on the support plate 2 bimi the same dimensions, the fluid pressure inside the cylinder becomes = m/Stotal 4B.= 1000 kg/882 cm2= 1,133 kgs m , and the pressure on the lower piston will be reduced to Pbottom= 1,133 kg/cm2147 cm2= 166,551 kg, i.e. 6 times less. The lower piston 5 may be replaced by a cover 26 made integral with the support plate 2.

Hydraulic bearing can be when setting turned 180aboutas shown in Fig. 15. In this case, the bearing will increase the pressure on the abutment surface. When the same weight of the load 12, the pressure inside the cylinder is = m/Sbottom= 1000 kg/ 147 cm2= 6.8 kg/cm2. Hence the pressure on the upper pistons2=1Stotalin= 6.8 kg/cm2441 cm2= = 2998,8 kg

We offer hydraulic bearing can be installed on various vehicles, for example, on the vehicle (Fig. 9), by plane (Fig. 10), a crane (Fig. 11), helicopter (Fig. 12), and deployed on 180abouton the locomotive (Fig. 13) and on the road rink (Fig. 14).

The positive effect of the proposed hydraulic supports in reducing or increasing the pressure of any cargo on the supporting surface. The use of hydraulic supports on vehicles (Fig. 9, 10, 11, 12) provides increase gramatike will give the opportunity without increasing the weight of the latter to increase the coupling weight of the engine and thereby increase its traction and the application of road rollers will increase the ground pressure and thus increase its efficiency.

(56) II Artobolevsky I. I. Mechanisms in modern engineering. M. , Nauka, 1979, T. 1, page 141.

Krainev, A. F. Dictionary-reference mechanisms. M. , engineering, 1981, page 200.

1. The SUPPORTING DEVICE containing the lower support plate, the top weight plate and intermediate kinematically associated with them, characterized in that, to improve performance characteristics of the reference device by reducing or increasing the pressure on the abutment surface, the intermediate element is in the form of a Y-shaped cylinder with one or more pairs of branches, into which you insert more than one upper and one lower piston with sealing elements, with the first kinematically connected with the cargo plate, and the latter with the lower support plate.

2. The device under item 1, characterized in that the upper piston with the lower end sides are bevelled edges, made in the upward direction and the components of the acute angles with the bottom side surface, and the projection of the bevels of the pistons on the horizontal cavity are rectangles.

 

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