RU2193626C2 - Device for withdrawal of anchors and foundations of railroad contact-line reinforced-concrete supports - Google Patents

Abstract

FIELD: devices for removal of anchors and foundations of reinforced-concrete supports of various cross-sections of railroad contact systems. SUBSTANCE: device has supporting base and grip interconnected with each other by rams communicated with hydraulic system of base machine provided with jib crane. Grip is made in the form of closed rectangular frame embracing anchor body. Installed on frame from its one internal side are fixed props and movable hold-down appliance adapted for engagement with anchors of different cross-sections, and installed from opposite internal side. Hold-down appliance is made in the form of transverse self-adjusting beam installed on frame for motion under action of rams and provided with extreme props. Additional extending prop is installed in center of beam and provided with self-adjusting catch which is made in the form of one or several toothed discs hinged to vertical axle. EFFECT: provision of withdrawing anchors and foundations of contact-like supports of various cross-sections. 2 cl, 8 dwg

Description

 The invention relates to devices for extracting anchors and foundations of reinforced concrete supports of a railway contact network from soil.

 A device for immersing and removing piles from the soil [1], comprising a base machine with a frame, a jack power mechanism, a grip for piles connected to the jack by means of a hinge rod, and a guide provided with an additional grip fixed to the jack by means of an additional hinge rod directed to the side opposite from the main link, and an additional guide, each link being fixed to the frame of the traction machine using an axis with a telescopic boom, the sliding part of which is made in the form of an elastic fork adjacent to the grip for piles with a clutch mounted on it that can be mounted on a rod of a hydraulic jack mounted in the boom cavity, and each of the guides is equipped with an additional telescopic boom, the extendable part of which is made in the form of elastic plates, while each pair of guide and traction, respectively, telescopic booms are interconnected by a sliding lever.

 The disadvantage of this device is the design complexity and the need to place two vertical consecutively located on a pile of jacks.

 Known extractor of foundations from the soil [2], containing a support base and a gripping device, interconnected by power hydraulic cylinders associated with the hydraulic system of the base machine, equipped with a jib crane, grippers interacting with the removable foundation, equipped with their own hydraulic cylinders, are placed on the gripper of the extractor.

 The disadvantage of this device is that it can only capture foundations having two parallel surfaces.

 The task of the present invention is to enable the extraction of anchors and foundations of supports of various cross sections.

 For example, there are anchors or foundations of the TS type (three-beam glass), which are equipped with a tetrahedral head on top, and the tail part is made in the form of three feathers - rays, resembling a trefoil in cross section.

 The problem is solved in that in a device for extracting anchors and foundations of reinforced concrete supports of the railway contact network, containing a support base and a gripping device interconnected by power hydraulic cylinders connected to the hydraulic system by a base machine equipped with a jib crane, and the gripping device is made in the form of a closed rectangular frame, covering the body of the anchor, with fixed stops mounted on it from one of the inner sides and a movable clamp adapted for actions with an anchor of various cross sections and installed on the opposite inner side.

 Figure 1 shows a General view of the device, and figure 2 shows its work on the extraction of the anchor (foundation) with a different cross-section along the length.

 In FIG. 3.4 shows the design of the device with a grip on the upper part of the anchor; figure 5,6 shows the moment of extraction of the anchor with the capture of the end part; Fig.7.8 is the design of an additional retractable stop.

 The device consists of a support base 1 and a gripping device 2, interconnected by power hydraulic cylinders 3, connected to the hydraulic system 4 of the base machine 5, equipped with a jib crane 6.

 The gripping device 2 is made in the form of a rectangular frame 7, covering the body of the anchor 8, with fixed stops 9 mounted on it from one of the inner sides and, on the other hand, with a movable clip 10, made in the form of a self-aligning beam 11 mounted on the frame 7 with the possibility of movement under the action of the power cylinders 12. The beam 11 is equipped with extreme stops 13, and in the center of the beam 11 there is an additional retractable stop 14 provided with a self-locking hook 15. The working element of the hook 15 is made in the form of one or more their gear discs 16 pivotally mounted on a vertical axis. To facilitate the installation of the device on the anchor 8 set the tip 17.

 The device operates as follows.

 The base machine 5 is installed opposite the removable anchor 8, on which the guide head 17 is pre-installed. Then, using the jib crane 6, lower the gripping device 2 so that the fixed clamps 9 and the fixed clamp 10 can capture the anchor in any section along the entire length. The support base 1 is supported on the ground. They apply pressure to the hydraulic system 4 and clamp the anchor 8 first to the upper part. Considering that the upper part of the anchor, as a rule, is of a square section, by turning on the power cylinders 12, the anchor 8 is clamped between the fixed stops 9 and the extreme stops 13 of the movable clamp 10. Then, pressure is applied to the vertical power cylinders 3 and the anchor 8 is pulled out by the amount of their stroke. Then intercept. If it turns out that the cross section of the anchor 8 has changed, put forward an additional retractable stop 14 until it touches the body of the anchor 8. The stop 14 is fixed in this position. Again, pressure is applied to the power cylinders 12, clamping the anchor 8. In this case, the support 14 with its working element of the hook 15 in the form of a gear disk 16 is embedded in the anchor body and self-installs. The extreme stops 13 center the device relative to the anchor 8 and further clamp it (see Fig. 7, 8).

 Again, apply pressure to the vertical power cylinders 3 and remove the anchor 8 from the ground. Then the crane 6 remove it.

 The applicant made a prototype device, which confirmed the possibility of solving the problem.

List of references
1. Auth. St. 1738924, 1992, 5E 02 D 9/00, "Casing Extraction Device". Yu.D. Gabrichidze, Yu.L. Goy.

 2. Patent RU 2139389 C1, 10.10.1999.

Claims (2)

 1. A device for extracting anchors and foundations of reinforced concrete supports, of various cross-sections, a railway contact network, comprising a support base and a gripping device interconnected by power hydraulic cylinders connected to a hydraulic system of a base machine equipped with a jib crane, characterized in that the gripping device is made in the form of a closed rectangular frame, covering the body of the anchor, with fixed stops and a movable clamp mounted on it from one of the inner sides, are adapted m for interaction with an anchor of various cross-sections along the length and installed on the opposite inner side, and the clamp is made in the form of a transverse self-aligning beam mounted on the frame with the ability to move under the action of power cylinders and provided with extreme stops, and an additional retractable stop is installed in the center of the beam, equipped with a self-locking hook.  2. The device according to claim 1, characterized in that the self-locking hook is made in the form of one or more gear disks pivotally mounted on a vertical axis.

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