RU138511U1 - ELECTRIC SUPPORT JACK - Google Patents

Abstract

1. A jack for straightening electric supports, including a housing, a rod, a locking mechanism to the support and a winch, characterized in that for extending the jack length statically, an extension cord is installed in the rod from the outer end, and a carriage is mounted on the stem for working stem extension , on it is fixed a block for a jack rope laid in the form of a chain hoist, which is connected through a block to a winch rope statically fixed on the jack body. 2. The jack according to claim 1, characterized in that the support fixing mechanism is made in the form of a lever, which is fixed on one extension by one side, there are hooks on the other side of the lever, for which the clamp is fixed, and in the middle it abuts against the electric support through the shoe.

Description

The claimed technical solution relates to construction, namely, to restore the vertical position of the electrical support during the repair of lines of the contact network of railways and power lines.

A number of devices for this purpose are known in the art. For example, a device for straightening electrical supports described in the patent for invention CN 102704735 dated 03.10.2012, consisting of a housing with a base plate, a telescopic rod, a hoop for attaching to the electrical support and an actuator - a hydraulic hand jack.

Disadvantages:

- this device uses a special jack with a large stroke of the rod, manufactured individually;

- the hoop for attaching to the support has a certain size, it is required to have a set of hoops for different supports;

- the device has limited use for straightening the supports on the slopes, since there is no adjustment in length.

The prior art also knows the device described in the patent for invention GB 754241 of 08/08/1956 for lifting supports. The hoist consists of two poles made of pipes connected at one end, where a rope unit is installed, which is attached to a hand winch mounted on one of the poles, with the other end the rope fixed to an electric support. Base plates are located at the second end of the uprights.

Disadvantages:

- the device has limited use for the alignment of the supports of the contact network, as it significantly protrudes beyond the dimension of the electrical support and due to the lack of adjustment in length;

- the large length of the racks is oversized during transportation.

The closest prototype of this invention is the support alignment device described in the utility model patent RU 111567 of 08/09/2011. The device consists of a welded base with a base plate, at both ends of which are fixed blocks, a retractable rod, on the end of which a metal clamp is fixed , as a drive mechanism - a manual winch.

Disadvantages:

- long stem and base length (not overall during transportation);

- the winch is kept from falling only by pulling the ropes;

- the clamp for fastening to the support has a certain size, it is required to have a set of clamps for different supports.

The problem to which the claimed technical solution is directed is to raise the electric support to a vertical position in places where the use of known devices is difficult or even impossible to adjust the support (near ponds, swamps, on slopes of railway tracks, etc.). At the same time, to reduce the mechanisms used, it is proposed to use the existing lifting mechanism as a jack drive - a manual winch, which is used to carry out repair and installation work in the construction and repair of contact lines of railways and power lines. Along the way, the problem of the mobility of the jack is solved when delivering it to the place of restoration work.

This task is achieved due to the fact that the jack for straightening the electrical supports consists of a body made of square tube. On one side of the hull there is a thrust plate with fangs and an arm for attaching a standard winch, used for repair and installation work in the construction and repair of contact lines of railways and power lines. A block for the jack rope is fixed on the opposite side. Inside the housing there is a carriage on which a block for the jack rope is installed. Blocks mounted on the body and carriage have two grooves in which the jack rope is laid in the form of a chain hoist. The ends of the tackle are fixed on the body, and the middle is laid in a block that connects to the winch rope block. A rod is inserted inside the housing, one side of which abuts against the carriage, and an extension is inserted into the other. On the carriage body there is a guide cone for centering the stem. The extension cord has a discrete movement relative to the rod, which is fixed with a finger. At the end of the extension cord there is a mechanism for fixing the electrical support, made in the form of a lever, which is attached to the extension cord on one side, on the other side of the lever there are hooks for which the clamp is fixed, and in the middle it rests on the electrical support through the shoe. The clamp can clasp the supports of different diameters, due to the presence of rings arranged in the form of a chain. All shared jack elements are equipped with handles for easy carrying.

The technical result provided by the totality of technical solutions is the possibility of raising the electrical support to a vertical position in places where using the known devices to adjust the support is difficult or even impossible. To reduce the mechanisms used, the existing lifting mechanism is used as a jack drive - a manual winch. The application of a technical solution - laying the winch rope in the form of a chain hoist - doubles the jack force and reduces the diameter of the rope used, which reduces the weight of the jack. The technical solution - the mechanism for securing the jack to the electric support of this design - reduces the time to fix to the support and the number of equipment used for different diameters of the supports. The technical solution - the use of an extension cord - allows you to use the jack to straighten the supports installed on the slopes. The technical solution - the separation of the jack into separate parts - simplifies transportation and facilitates manual transportation to the place of repair work.

A winch mounted on a jack can be equipped with a dynamometer.

The device of the jack for straightening the electrical supports is illustrated in FIG. 1, which shows the jack in the initial state before lifting the electrical support. A cut is made in the housing to show the carriage.

The jack for straightening the electrical supports consists of shared parts:

- housing 1, on one side of which a thrust plate 7 with fangs 8 and bracket 9 is located, for mounting the winch 10, on the other hand, block 11 is fixed for the jack rope 12, fixed by clamps 13 to the housing; the middle of the rope is laid in a block 14, which is connected to the winch block 15, a carriage 6 with a block 16, which moves on rollers 17, is placed inside the case, handles 18 for welding are welded to the case;

- rod 2 with a finger 19 for fixing the extension cord;

- an extension cord 3 with a mechanism 4 for fixing an electrical support having hooks 20 and a shoe 21;

- clamp 5 with rings 22 and handle 23 for easy donning.

Alignment of the electrical support 24 using a jack is as follows. A jack is being assembled at the site of repair work to straighten the support. The rod 2 is inserted into the housing 1. The extension cord 3 is inserted into the rod 2 to the length necessary for work and is fixed with a finger 19. A winch 10 is fixed on the bracket 9. The winch rope is untwisted until the block 14 stops in the block 11. The assembled jack is installed by the base plate 7 on the ground to the support at an angle of 30-60 degrees. It is fixed with a clamp 5 on the support 24. On weak soils, a block 25 is placed under the base plate to increase the supporting area. Soil 28 is selected to prevent the support 24 from turning to a vertical position by any known method. When the winch handle 26 is rotated, a force is created on the rod 2, which is transmitted through the extension 3 to the mechanism 4 for fixing the support. The lever of the mechanism 4 is rotated around the shoe 21, and after sampling the gap between the clamp 5 and the support 24, the force is transmitted through the shoe to the support. Further rotation of the winch handle 26 is controlled by the dynamometer 27. It must be taken into account that the dynamometer 27 shows a force 4 times less than the jack force. Upon reaching the support 24 of the vertical position, the pit is filled with soil and rammed. The jack is detached from the support and disassembled into its components for further transportation.

Claims (2)

1. A jack for straightening electric supports, including a housing, a rod, a locking mechanism to the support and a winch, characterized in that for extending the jack length statically, an extension cord is installed in the rod from the outer end, and a carriage is mounted on the stem for working stem extension , a block is fixed on it for a jack rope laid in the form of a chain block, which is connected through the block to a winch rope statically fixed on the jack body. 2. The jack according to claim 1, characterized in that the support fixing mechanism is made in the form of a lever, which is fixed on one extension by one side, there are hooks on the other side of the lever, for which the clamp is fixed, and in the middle it abuts against the electric support through the shoe.

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