RU202730U1 - Unit for vibratory driving of pile foundations and piles of overhead contact network supports - Google Patents

Abstract

This utility model relates to construction equipment, namely to machines that allow pile foundations to be loaded from a transport track, for example, a railway track, for the support of a contact network and piles. The technical result of the claimed utility model is to expand the functionality of the unit while maintaining the reliability and safety of its operation. The specified technical result is achieved due to the fact that the unit for vibrating pile foundations and piles of the contact network supports contains a railway platform on which the power plant, a cabin, a rotary support device are mounted, on the platform of which working equipment is mounted, including a retractable truss and a rotary truss with support jacks, a guide frame with a load carriage mounted on it, a vibratory pile driver with a rotary grip, loading and charging equipment, hydraulic, electric and pneumatic braking systems, while the working equipment is fixed on the platform of the support-rotary device with the ability to rotate through an angle in the range from 0 up to ± 90 degrees with fixation in boundary positions, according to this technical solution, the working equipment is made with the possibility of fixation in an intermediate rotated position, determined by a given distance from the axis of the track to the axis of the submerged foundation, while the rotary grip The vibratory pile's cotton wool is designed to be rotated to the required angle to ensure the parallelism of the foundation wall relative to the longitudinal axis of the track, and the rotary truss is rigidly fixed on the platform of the rotary support.

Description

This utility model relates to construction equipment, namely, to machines that allow pile foundations to be loaded from a transport, for example, a railway track, for the support of the contact network and piles.

At present, machines are widely known and used for installing piles and pile foundations of overhead contact network supports at a distance in the range from 3350 to 5950 mm from the longitudinal axis of the track. However, it became necessary to install supports at other distances, in particular, from 2750 to 3350 mm.

A known machine for vibrating piles and pile foundations of the contact network supports [utility model patent RU 192676, publ. 09/26/2019], containing a railway platform, a power plant, a cab, movement mechanisms, a rotary support device on which installation equipment is mounted, including a rotary truss, a retractable truss, a guide frame with a cargo carriage with a working body installed on it, loading and charger, hydraulic, electric and pneumatic braking systems, in which the installation equipment with the working member is fixed on the platform of the support-rotary device with the possibility of shifting relative to the support-rotary device towards the pathway after turning the installation equipment by ± 90 ° from the transport position.

When unfolding the equipment from the transport position to the working position, a preliminary shift of the retractable truss with attachments and a pile foundation clamped into the gripper by 1150 mm is required to fit into the overall dimensions. After that, the rotary truss is rotated in the direction of the work. Then the jacks of the rotary truss are supported in the ground and the platform is leveled, which ensures that the machine cannot overturn when the equipment is transferred to the working position. Only after that, the equipment is transferred to a vertical position and installed at the immersion mark of the pile foundation.

However, in the proposed design, when shifting the equipment and transferring it to the working position with the pile foundation clamped into the gripper without resting on the ground the jacks of the rotary truss to slide it in to ensure the outreach of 2.75 m, destructive loads arise on the bolting of the mechanism to the supporting-rotary device, and can also lead to overturning of the machine in the absence of support of jacks in the ground and, as a result, to an emergency.

The technical result of the claimed utility model is to expand the functionality of the unit while maintaining the reliability and safety of its operation.

The specified technical result is achieved due to the fact that the unit for vibrating pile foundations and piles of the contact network supports contains a railway platform on which the power plant, a cabin, a rotary support device are mounted, on the platform of which working equipment is mounted, including a retractable truss and a rotary truss with support jacks, a guide frame with a load carriage mounted on it, a vibratory pile driver with a rotary grip, loading and charging equipment, hydraulic, electric and pneumatic braking systems, while the working equipment is fixed on the platform of the support-rotary device with the ability to rotate through an angle in the range from 0 up to ± 90 degrees with fixation in boundary positions, according to this technical solution, the working equipment is made with the possibility of fixation in an intermediate rotated position, determined by a given distance from the axis of the track to the axis of the submerged foundation, while the rotary grip The vibrator's cotton wool is designed to be rotated to the required angle to ensure the parallelism of the foundation wall relative to the longitudinal axis of the track, and the rotary girder is rigidly fixed on the platform of the supporting-rotary device.

Possible options for the development of the claimed technical solution:

- the dependence of the angle (α) of fixing the intermediate rotated position, the distance (L) from the axis of the track to the axis of the submerged foundation and the outreach (R) of the working body from the axis of rotation is determined by the formula: L = R * Sinα;

- fixation is carried out using folding stops.

The design of the developed unit has the ability to install equipment for operation at overhangs of 2750-5950 mm with the ability to shift the retractable girder relative to the rotary girder to the required outreach from the track axis. At the same time, the rotary girder is rigidly welded to the rotary support device, which guarantees the absence of destructive stresses in the structure. While in the prototype it is proposed to fasten the rotary truss with the equipment to the rotary support using guides that allow the equipment to be moved, rotated 90 degrees, to an outreach of 2750 mm. The presence of clearances and bolting of the guides leads to the consequences described above.

FIG. 1 shows a general view of the unit in transport position.

FIG. 2 shows a general view of the unit in the deployed working position.

FIG. 3 shows a scheme for calculating the angle of rotation.

FIG. 4 is a front view of a rotary gripper vibrator.

FIG. 5 is a top view of a rotary gripper vibrator.

FIG. 6 is a side view of a rotary gripper vibrator.

FIG. 7 shows a section a-a of FIG. four.

FIG. 8 shows a section b-b from FIG. five.

FIG. 9 shows a section b-b of FIG. 6.

FIG. 10 is a view D of FIG. four.

The unit for vibrating pile foundations and piles of the overhead contact network supports (Fig. 1-10) contains a self-propelled railway platform 1 with movement mechanisms, consisting of a cargo trolley with a drive gearbox and an electric motor, on which the power plant 2 and the cabin 3 are fixed by means of a bolted connection, and by welding a rotary support device 4, on the platform of which working equipment is also mounted by welding, including a rotary farm 5 with support jacks and a retractable farm 6, a guide frame 7 with a cargo carriage 8 moving along its guides, a vibratory pile driver 9 with a rotary grip , loading and charging equipment, including a crane-manipulator 10 with folding supports 11 and a turntable 12 for turning the anchor foundations fixed to the platform 1 by means of bolted connections.

The unit also contains a hydraulic braking system 13, an electric braking system 14 and an air braking system 15.

Cabin 3 can be equipped with 16 air conditioning and 17 heater.

The working equipment is fixed on the platform of the supporting-rotary device with the possibility of turning by means of hydraulic cylinders through an angle in the range from 0 to ± 90 degrees with fixation in the boundary positions and in an intermediate rotated position, determined by a given distance from the axis of the track to the axis of the submerged foundation using folding stops (not shown in the figures).

Vibrator 9 (Fig. 6-10) includes a vibrator 18 and a rotary grip 19. The grip 19 provides a rigid connection with the head of the submerged element, and the vibrator 18 generates vibration of the mass, including the submerged element and vibrator 9 with a carriage 8.

The rotary grip 19 is made with the possibility of rotation to the required angle to ensure the parallelism of the foundation wall relative to the longitudinal axis of the track.

For this, in the housing 20 (Fig. 9) of the vibrator 18 on spherical roller bearings 21, two unbalanced shafts 22 are installed, located in the same horizontal plane and connected to each other by means of meshing gears 23. Such a connection ensures synchronous rotation of the unbalanced shafts 22 in different directions with the same speed. On the unbalanced shafts 22, unbalanced shafts 24 are mounted. The unbalanced shafts 22 with unbalanced balances 24 are rotated from hydraulic motors 25 connected to the unbalanced shafts 22 by gear couplings 26.

Lubrication of the gearing of the drive of the unbalanced shafts 22 and the bearings 21 on the drive side is carried out by oil mist generated during the rotation of the gear wheels 23. The bearings 21 on the opposite side are lubricated with grease.

The oil level in the housing 20 is monitored by the oil gauge glass 27.

The gripper 19 consists of a lower chord and an upper connecting flange with a support plane and a centering shoulder, connected by ribs.

On the upper sheet of the lower belt, three hydraulic cylinders 28 are installed with the rods downward (Fig. 8).

Under each hydraulic cylinder 28, guides 39 are fixed inside the belt, in vertical dovetail grooves, in which wedges 30 move, rigidly connected to the rods of the hydraulic cylinders 28 (Fig. 6). Wedges 30, in turn, also have dovetail grooves, located obliquely, with which the wedge cheeks 31 with replaceable cheeks 32 interact. The horizontal movement of the wedge cheeks 31 during the stroke of the hydraulic cylinder rods 28 is provided by the keys 33 connecting the guides 29 and the wedge cheeks 31. Keys 33 are fastened in the grooves of the guides 29 using set screws 34 with lock washers 35. When the hydraulic cylinders 28 rods up, wedges 30 move the wedge cheeks 31 with replaceable cheeks 32 in a horizontal plane in the direction of the pile foundation, which corresponds to its clamping.

The gripper 19 is pivotally connected to the lower plane of the vibrator 18 and is centered with it by a landing collar. Clamping 19 to the lower plane of the vibrator 18 is performed using the shaft 36 (Fig. 8), the clamping nut 37 (Fig. 10), and with the clip 38 fixed to it by means of the slots.

On the lugs of the cage 38 are fastened two hydraulic cylinders of the clamp 39 (Fig. 7), which provide rotation of the clamping nut 37 and the clamping of the grip 19 to the lower plane of the vibrator 18. The grip 19 in the unlocked position has the ability to rotate around the vertical axis of the vibrator 18 by 35 degrees using a hydraulic cylinder 40) rotation (Fig. 6). To operate the unit on a certain side of the track, it is necessary to set the axle 41 (Fig. 10) in the desired position and fix it and the eye of the hydraulic cylinder rod in this position with the nuts 42, 43.

The presence on the clamping nut 37 and the cage 38 of the splines allows you to adjust the angle of installation of the hydraulic cylinders of the clamp 39 with wear of the thrust thread of the shaft 36 and clamping nut 37, as well as with other operational deformation of the parts.

FIG. 5 shows a diagram for determining the dependence of the angle (α) of fixing the intermediate rotated position, the distance (L) from the axis of the track to the axis of the submerged foundation and the outreach (R) of the working body from the axis of rotation is determined by the formula: L = R * Sinα. The minimum α angle of rotation is limited by the platform and the size of the equipment and is 55 degrees.

Outreach in the range of 2750-3350 mm is provided by moving the retractable truss with the equipment to the desired mark while maintaining the rotation angle of 55 degrees. When working in the range of 3350-5950 mm, the gripper of the vibrator is moved to its original position, and the equipment is rotated through an angle of 90 degrees.

The inventive unit operates as follows.

The pile foundation or pile (not shown in the drawing) with the help of a manipulator crane 10 is placed on the rotary table 12 in such a way as to ensure its capture by the rotary grip 19 of the vibrator 9. Next, the vibrator 9 with the captured pile foundation or pile is lifted upwards, then turning the equipment to the required angle with a preliminary shift of the retractable girder to fit into the size, after which the equipment is leveled using the support jacks of the rotary girder, then the mast is moved to a vertical position and aiming at the required mark is made. Then the mast is lowered all the way into the ground, after which the submerged element abuts against the ground and vibrates it to the design depth. The machine is brought into transport position in the reverse order.

Claims (3)

1. A unit for vibrating pile foundations and piles of overhead contact network supports, containing a railway platform on which a power plant, a cabin, a slewing device are fixed, on the platform of which the working equipment is mounted, including a retractable truss and a rotary truss with supporting jacks, a guide frame with a load carriage installed on it, a vibratory pile driver with a rotary grip, loading and charging equipment, hydraulic, electric and pneumatic braking systems, while the working equipment is fixed on the platform of the support-rotary device with the ability to rotate through an angle in the range from 0 to ± 90 degrees with fixation in boundary positions, characterized in that the working equipment is made with the possibility of fixing in an intermediate rotated position, determined by a given distance from the axis of the track to the axis of the submerged foundation, while the rotary gripper of the vibratory pile driver is made with the ability to rotate to the required angle for I ensure the parallelism of the foundation wall relative to the longitudinal axis of the track. 2. The unit for vibrating pile foundations and piles of overhead contact network supports according to claim 1, characterized in that the dependence of the angle (α) of fixing the intermediate rotated position, the distance (L) from the track axis to the axis of the submerged foundation and the outreach (R) of the working body from the axis of rotation is determined by the formula: L = R * Sinα. 3. The unit for vibrating pile foundations and piles of overhead contact network supports according to claim 1, characterized in that the fixation is carried out with the help of folding stops.

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