SU1583319A1 - Semitrailer support device - Google Patents

Abstract

The invention relates to roadless vehicles and can be used in the construction of automobile semi-trailers, in particular their support devices. The purpose of the invention is to improve performance. The support device comprises support columns in the form of hydraulic cylinders 1 connected to the frame of the semi-trailer. The stem 2 of each hydraulic cylinder is made with a groove in which the spring 5 of the stem extension is installed. On the rod is the sleeve-stop 6, spring-loaded relative to the housing of the hydraulic cylinder. The stop sleeve 6 is adapted to move along the stem and fix it in a certain position on the stem. The struts are made of two pivotally connected levers 9 and 10. The hinge 11 is connected by a pull 13 to the stop sleeve 6. 3 Il.

Description

, 7g. . t

JPW) № / W № W ty № М т т

Rig1

The racks in the form of hydraulic cylinders 1, the stem 2 of each hydraulic cylinders are made with a groove in which the spring 5 of the stem extension is installed. On the rod is a sleeve - stop 6, is spring-loaded relative to the body of the hydraulic

cylinder. The stop sleeve 6 is made with the possibility of moving along the stem and fixing it in a certain position on the stem. The struts are made of two pivotally connected levers 9 and 10. The hinge 11 is connected by a pull 13 to the stop sleeve 6. 3 Il.

The invention relates to roadless vehicles and can be used in the construction of automobile semi-trailers, in particular their support devices.

The aim of the invention is to improve performance.

Fig „1 shows the support device in the working position, the communities view; figure 2 - the same, in the transport position; in FIG. 3, view A in FIG. 2.

The supporting device of the semi-trailer contains supporting legs (the bottom of the rack is depicted), each of which includes a hydraulic cylinder 1 of two-sided operation, pivotally connected to the frame of the semi-trailer, the rod 2 of which is connected to the supporting pile 3. The rod 2 with the piston 4 is made with an axial flow through, which is installed spring 5 extension stem.

On the rod freely mounted & amply support 69 spring-loaded spring 7 relative to the cylinder body 1 o. Support sleeve 6 is provided with a lock 8 its position on the rod 2

The device also includes a strut,

pivotally connected to the hydraulic cylinder body and the semi-trailer frame. The strut consists of two levers 9 and 10 interconnected by a hinge 11. A stop 12 is made on the lever 9, limiting the angle of rotation of the levers relative to each other.

The stop sleeve 6 and the common hinge 11 of the arms 9 and 10 of the strut are interconnected by means of the hinge rod 13. The support leg is fixed in the transport position by a lock 14, which cooperates with the tongue rest 15p fixed on the rod 13.

The hydraulic control system includes a reservoir 16 for the working fluid, a pump 17, a control cock 18, a switching valve 19, and

five

0

five

0

five

0

five

0

five

communication lines. In order to prevent the drawdown of the hydraulic cylinder 1 under load, it is equipped with a hydraulic lock 20, which locks the over-guard cavity.

The transfer of the device from the transport position to the operational position is as follows.

When the lock 14 is open, the control valve 18 is turned to the open position, the spool 19 is placed in a position in which the container 16 is connected to both (piston and piston) cavities of the hydraulic cylinder 1. Under the action of the spring 5, the rod 2 begins to extend, In this way, the piston cavity of the hydraulic cylinder is filled with the working fluid from the tank 16, and the fluid from the piston cavity is displaced. When the stem 2 is extended, the stop sleeve 6 moves along with it, pulling the rod 13, which through the hinge 11 of the strut turns the levers 9 and 10 around the hinge on the frame of the semi-trailer and the hinge on the body of the hydraulic cylinder 1, respectively.

When the lever strut is fully opened, the hydraulic cylinder 1 takes up a vertical position, the spring 7 through the stop sleeve 6 transmits a force to the thrust 13, which locks the strut levers 9 and 10 in the working position, while the stop 12 fixes the mutual position of the strut arms, preventing IU from further moving.

After the strut is secured in the working position, the latch 8 of the stop bushing 6, the rod 2 is opened. Under the action of the spring 5, it pushes out until it stops the pint 3 on the road surface. The hydraulic lock 20 allows the working fluid to enter the piston cavity of the hydraulic cylinder 1, but prevents the spontaneous release of fluid from this cavity, therefore, in the working position, the load from the semi-trailer through the rod (strut) perceives mainly the working fluid in the supra piston cavity, but not the spring.

The transfer of the support device — from the operating position to the transport — is carried out by turning on the pump 17 and applying the working fluid under pressure to the sub-piston cavity of the hydraulic cylinder 1, the valve 18 is moved to the closed position, and the spool 19 is set to the position shown in Fig. 2, the lock 20 pressurized fluid is open.

The rod 2, as it moves upward, and with its flange rests on the sleeve-support 6 and carries it along with itself,

frame of the semi-trailer and supporting struts made in hydraulic cylinders, the ends of which are each

one-piece semi-trailer struts with a frame, the other ends are articulated with support pillars, a device for fixing racks in tr (0 sports position and hydraulic control system, characterized in that, in order to increase operational qualities, in the super-piston cavity each hydraulic cylinder is installed

In this case, the latch 8 rigidly fixes the bushing of the stem extension spring, on

ku on stock 2.

Claims (1)

Further movement of the rod 2 together with the stop sleeve 6 leads to the folding of the lever strut of the support post, since the thrust 13, abutting the hinge 11 connecting it with the strut levers 9 and 10, causes the latter to rotate around the hinges on the frame of the semi-trailer and on hydraulic cylinder housing. The support post occupies the transport position, in which it is fixed with a lock 14. The formula iso. bratis Semi-trailer support device, containing pivotally connected to which is located spring-loaded relative to the cylinder body sleeve-stop, made with the possibility of movement along the stem and f 20, its position is in a certain position relative to the stem, each strut is made of two pivotally with levers between each other, which are provided with a stop 25 rota relative to each other, wherein the hinge of the link of the levers and the outside surface of the sleeve support are interconnected by a tie, the ends of which are pivotally mounted. , 1583319 frame of the semi-trailer and support columns made in the form of hydraulic cylinders, at the ends of each of which are mounted the struts, one end with the semi-trailer frame, the other ends are hingedly connected to the uprights, the device for fixing the uprights in the transport position and the hydraulic system of control, characterized in that, in order to improve performance, the piston-mounted cavity of each hydraulic cylinder is spring-loaded with respect to the hydraulic cylinder body, an emphasis sleeve made with the possibility of movement along the rod and fixing it in a certain position relative to the rod, each strut made of Vuh pivotally interconnected levers which are provided with their A rotating limiter the company is relative to each other, wherein the hinge of the link of the levers and the outer surface of the sleeve-support are interconnected by a pull, the ends of which are hinged. FIG. 2 figs Compiled by G. Gandabin Editor A. Motyl Tehred A. Kravchuk Proofreader M. Sharoshi, Order 2225 Circulation 450 The leaders of the State Committee for Inventions and Discoveries at the State Committee for Science and Technology C $ CP 113035, Moscow, Zh-35, 4/5 Raushsk Nab. Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 15 Subscription