RU2194110C1 - Tie tamping output - Google Patents

Abstract

FIELD: railway transport. SUBSTANCE: invention relates to devices for construction and repair of railway tracks, particularly to devices for consolidating ballast, and it can be used in cyclic and continuous-action track machines. Said tie tamping outfit has frame on which vibratory drive is mounted, and levers with fitted on two-side tamping tools and hydraulic cylinders included into kinematic circuit coupling vibratory drive with levers. Outfit is provided with tie-rods connecting vibratory drive with housing of hydraulic cylinders. Each hydraulic cylinder has two power pistons mechanically coupled with corresponding levers, and two additional pistons made in form of cups accommodating power pistons in their inner spaces. All tamping tools or part of said tools are secured in forks installed on levers for turning around axles crossed by lever turning axles. Invention reduces number of required hydraulic cylinders and provides more complete compensation for load on main bearings of vibratory drive by changing kinematic diagram of outfit and design of its hydraulic cylinders. EFFECT: improved operating capabilities. 3 cl, 3 dwg

Description

 The invention relates to devices for the construction and repair of railway tracks, in particular to devices for sealing its ballast, and is intended for use in track machines of cyclic and continuous cyclic action.

 Known tamper unit described in the book under the editorship of Syreishikova Yu.P. New track machines, M .: Transport, 1984, p. 65-73. It contains a frame, a vibrodrive mounted on it with main and connecting rod bearings, levers with one-sided arrester mounted on them, and hydraulic cylinders with power pistons connecting the vibrodrive with levers.

 Also known tamping unit according to the patent of Switzerland 656653, class. E 01 B 27/16 (published July 15, 86). In it, the vibrodrive is installed at the end of the upper arm of one of the pair of levers and is connected to the upper arm of the second arm by a hydraulic cylinder, and the levers are connected to the frame by centering springs.

 The disadvantage of these tamping units is the low productivity due to the fact that ballast compaction is carried out only with the oncoming movement of each pair of levers with brakes.

 The tamping unit according to the patent of the Russian Federation 2084578, class 6 Е 01 В 27/16 (published on July 20, 1997) does not have this drawback, in which bilateral hammers are fixed on the levers, and additional hydraulic cylinders are rigidly mounted on the main power hydraulic cylinders, the pistons of which can interact with the pistons of the main hydraulic cylinders, which makes it possible to seal the ballast both when the pairs of levers with the strikers meet in the opposite direction and when they move in the direction opposite to their average position, which makes it possible zhnym compacted ballast with two pairs of levers podboykami each side rail under four sleepers in one working cycle.

 The disadvantages of this unit are the need for two hydraulic cylinders to control each lever, which increases weight, reduces reliability and complicates the design and significant uncompensated vertical force on the main bearings of the vibrodrive in the four-sleeper version of the unit.

 The purpose of the present invention is to reduce the required number of hydraulic cylinders in the unit and more fully compensate for the load on the main bearings of the vibrodrive by changing the kinematic scheme of the unit and the design of its hydraulic cylinders.

 To achieve this technical result, the pallet-grinding unit is equipped with rods connecting the vibrodrive to the hydraulic cylinder bodies, each hydraulic cylinder contains two power pistons connected with corresponding levers, and two additional pistons made in the form of cups, in the internal cavities of which power pistons are placed.

 In order to give the unit the possibility of working both on the way and on the turnouts by removing from the working area interfering with the concrete treads, the latter can be fixed in forks mounted on levers with the possibility of rotation around axes that intersect with the axes of rotation of the levers.

 To reduce the load on the rods and connecting rod bearings of the vibrodrive, the unit may contain elastic elements installed between the unit frame and the cylinder bodies.

 Using the present invention will allow us to create a universal tamping unit for work on the track and turnouts, capable of compacting the ballast under four sleepers per cycle with a mass and design complexity that slightly differ from the corresponding characteristics of the unit that compacts the ballast under two sleepers per cycle.

 A possible diagram of the inventive pad assembly, a design variant of its hydraulic cylinders and a diagram of their functioning are shown in figures 1, 2, and 3.

 The tamping unit (Fig. 1) contains a frame 1, a vibrodrive 2, levers 3 and 4, forks 5 and 6 with brackets 1 fixed to them, mounted on levers 3 and 4 with the possibility of rotation around axes 8 and 9 by drives 10 and 11, moreover, on the internal levers 3 there are two forks with one hammer on each, and on the external levers 4 one fork with two hammer. The unit also contains hydraulic cylinders 12 and 13, the casings of which are connected by rods 14 to the vibrodrive 2, and springs 15 installed between the frame 1 and the housings of the hydraulic cylinders 12 and 13. The vibrodrive 2 and the hydraulic cylinders 12 and 13 are located on the same axis, therefore, since the forces on the rods 14 opposite in direction and almost equal in size, the main bearings of the vibrator are almost completely unloaded. The springs 15 have a stiffness that provides a natural oscillation frequency of the moving parts close to the operating frequency of the vibrator 2, thereby neutralizing the inertial component of the load on the rods 14 and connecting rod bearings of the vibrator 2.

 Each hydraulic cylinder (FIGS. 2 and 3) contains a housing 16 with an axis 17 pivotally connecting it to the rod 14 (FIG. 1), two power pistons 18 and 19, the rods of which are connected through levers 20 to the levers 3 and 4 (FIG. 1 ), and two additional pistons 21 and 22, made in the form of glasses.

The tamping unit is moved by the track machine and the corresponding drives along the track section being built or being repaired and sequentially stopped for the duty cycle in the positions when the tampers are above the sleepers (Fig. 1 shows the position of the tampers above the sleepers drawers Ш ₁ , Ш ₂ , Ш ₃ , W ₄ and W ₅ ).

When working with all the shocks, the rod cavities A ₁ and A ₂ (FIGS. 2 and 3) of all hydraulic cylinders are constantly in communication with a source of high-pressure working fluid Pn (not shown in FIGS. 1, 2 and 3).

In the initial position, the cavities B also communicate with the corresponding hydraulic distributor (not shown) with a high pressure source Pn, and the cavities B ₁ and B ₂ communicate with the reservoir open to the atmosphere. In this case, the power pistons 18 and 19 are pressed by the pressure Pn in the cavities A ₁ and A ₂ to the bottom parts of the additional piston-cups 21 and 22, which are acted upon in the opposite direction by the pressure force Pn in the cavities B; as a result, additional pistons 21 and 22 with a force equal to the pressure force Pn on the cross-sectional area of the rods of the power pistons 18 and 19 are pressed against the end caps of the hydraulic cylinders, and the power pistons are in the middle position, see FIGS. 2 and 3a. While the blasting 7 (Fig.1) are located vertically.

 Further, with the current vibrodrive 2, the tamping unit is lowered by the corresponding drive (not shown in the figures) until the taps are introduced into the ballast to the required depth.

After this, the cavities B ₁ and B ₂ communicate with the high pressure source Pn, the power pistons 18 and 19 (FIGS. 2 and 3) with the stationary additional pistons 21 and 22 move to the maximum extension position (this position is shown in FIG. 3b), and hammering 7 seal the ballast under the sleepers W ₃ and W ₄ .

Then the cavities B ₁ and B ₂ communicate with the tank open to the atmosphere, and the cavity B with the source of low pressure Рн (Рн << Рп, the source is not shown in Figs. 1,2 and 3), the pistons 18 and 19 first return to the bottom parts pistons 21 and 22 (Fig. 2 and 3a), and then together with the pistons 21 and 22 move to the minimum extension position (Fig.3c), respectively, the hammering is first returned to its original position, and then the ballast is compacted under the sleepers Ш ₁ , Ш ₃ and W ₅ (figure 1).

 The working cycle ends by applying pressure Рп to the cavity В, as a result of which the power pistons 18 and 19 together with the additional pistons 21 and 22 (FIGS. 2 and 3) and the shocks 7 (FIG. 1) return to their original position.

Simultaneously with the return of the treads to their initial position, the tamping unit rises until the treads are removed from the ballast and moves to the position where the sleeper Ш ₄ is in place of the sleepers Ш ₁ . After that, the unit again lowers to the required introduction of taps in the ballast, and the working cycle is repeated.

 When the tamping unit is operated by the brackets of only the internal levers 3 (Fig. 1), the forks 6 are turned by the drives 11 (which, in particular, can be manual), removing the corresponding brakes from the working area. To eliminate the unnecessary flow of working fluid in this case, the power and additional pistons from the side of the external levers can be fixed in the middle position by connecting the corresponding cavities B (FIGS. 2 and 3) with the tank open to the atmosphere, and the cavities A with the cavities B. Otherwise, the working cycle proceeds as described above.

Claims (3)

 1. A tamper assembly containing a frame, a vibrodrive mounted on it, levers with double-sided strikers installed on them, and hydraulic cylinders included in the kinematic chain connecting the vibrodrive with levers, characterized in that it is equipped with rods connecting the vibrodrive to the cylinder bodies, and each hydraulic cylinder contains two power pistons kinematically connected with the corresponding levers, and two additional pistons made in the form of glasses, in the internal cavities of which are placed power pistons.  2. The tamping unit according to claim 1, characterized in that all the hammers or part of them are fixed in forks mounted on levers with the possibility of rotation around axes overlapping with the axes of rotation of the levers.  3. The tamper assembly according to claim 1, characterized in that it contains elastic elements installed between the frame and the bodies of the hydraulic cylinders.

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