RU215989U1 - Locking device for mounting on a mounting falling boom - Google Patents

Abstract

The utility model relates to energy construction, namely to carrying out repair and restoration work and to the construction of power transmission line supports. A locking fastening device is proposed, located on the mounting falling boom, which ensures the holding of the falling boom when the support is raised and its guaranteed disconnection after the support is raised. The technical result of the claimed utility model is to reduce the complexity of installation work when installing high-rise power transmission towers in hard-to-reach areas without the use of special equipment. The technical result is achieved through the use of a locking device for fastening located on the mounting falling boom, ensuring the retention of the falling boom when the support is raised and guaranteed disconnection of the mounting falling boom after the support is brought to a vertical position without the use of special equipment, while the locking device for mounting the mounting falling boom includes four plates with fixation teeth connected to each other on the same axis of rotation, while the first pair of plates with fixation teeth is equipped with a bracket with a two-bladed eye, and two links are installed to the second pair of plates with fixation teeth, to which, in turn, two brackets are installed with double eyelet. 8 ill.

Description

Technical field

The utility model relates to energy construction, namely to carrying out repair and restoration work and to the construction of power transmission line supports, as well as contact network supports, oil and gas and other pipelines, buildings and structures in areas characterized, among other things, by the phenomenon of frost heaving of soils .

State of the art

Elevators of long structures are known (SU 262356, publ. 1970; SU 299461, publ. 1971; SU 1795053, publ. 1993; RU 35332, publ. U-shaped) with a traction winch or a tightening chain hoist, the boom heads of which are equipped with flexible rods for connection with the mounted structure.

The disadvantage of the known devices is the limitation on carrying capacity associated with insufficient bending strength of the booms of the lifting device.

A known method of mounting a high-rise support, including the assembly of welded flat trusses of the lower section of the high-rise support, installation and fixing it on a previously prepared site, followed by assembly and installation of other sections, and the installation of the sections is carried out using lifting mechanisms, for example, truck cranes (RU No. 2330925 , published 2008).

The disadvantage of this method is that it requires the involvement of heavy vehicles, in particular heavy-duty truck cranes with a significant reach of the boom and the laying of appropriate access roads to the installation site of the high-altitude support, which requires high labor intensity during the work.

An A-shaped mounting falling boom is known (Mounting equipment: Product catalog / JSC Elektrosetstroyproekt. - Moscow: Torus Press Publishing House, 2020. Text: direct. Issue No. 25, p. 36), which includes two racks, upper parts of which are pivotally connected to each other, forming an A-shaped structure, combined hinges mounted on the bottom of the racks, and a chain cable with a lanyard designed to adjust the distance between the racks.

The disadvantages of this technical solution are the inability to control the smoothness of the installation of the support; the use of additional large-sized crane equipment when installing the support, which makes it difficult to install in hard-to-reach areas.

Closest to the claimed utility model, its prototype, is a lift of long structures (RU 161008, publ. 04/10/2016), containing a falling chevre, the base of which is fixed in the support hinge, and its head is equipped with slings for lifting a long structure and traction cables for rotation a falling chevre in the plane of lifting a long-length structure, while the hoist additionally contains a support beam for kinematic fastening of the lower side of the base of the structure to be lifted on the support hinge of the chevra, and the chevre is made in the form of a spatial truss and contains a biped with two side trusses, triangular in shape, facing the convex side in direction opposite to the direction of rotation of the falling chevre. The hoist is equipped with a long-length traction frame, on the one hand connected through slings to the head of the chevre, and on the other hand, with a cable for connection with the holding winch.

The disadvantage of the prototype is the significant time spent on the release of the falling chevrolet.

The essence of the utility model

The technical result of the claimed utility model is to reduce the complexity of installation work when installing high-rise power transmission towers in hard-to-reach areas without the use of special equipment.

The technical result is achieved through the use of a locking device for fastening located on the mounting falling boom, ensuring the retention of the falling boom when the support is raised and guaranteed disconnection of the mounting falling boom after the support is brought to a vertical position without the use of special equipment, while the locking device for mounting the mounting falling boom includes four plates with fixation teeth connected to each other on the same axis of rotation, while the first pair of plates with fixation teeth is equipped with a bracket with a two-bladed eye, and two links are installed to the second pair of plates with fixation teeth, to which, in turn, two brackets are installed with double eyelet.

The claimed locking device for fastening the mounting falling boom ensures a secure hold of the falling boom when the support is raised, and its guaranteed reliable disconnection after the support is brought to a vertical position without the use of special equipment. To ensure reliable fixation of the claimed locking device on the “top” of the falling arrow, the plates, brackets with a two-bladed eye and links are installed in “pairs”. In addition, the execution of parts in pairs allows you to make them interchangeable. The introduction of two connected links makes it possible to install an additional bracket for a safety halyard (rope), which is necessary when disconnecting a falling arrow after the support is brought to a vertical position.

Brief description of the drawings

In FIG. 1 shows an example of placing a locking device on a mounting falling boom when mounting a power transmission tower.

In FIG. 1 adopted the following designations:

1. Composite rack,

2. Jumper,

3. Thrust bearing,

4. Locking device,

5. Sling,

6. Support,

7. Rope,

8. winch,

9. Safety halyard,

10. Support shoes (support pads).

In FIG. 2 shows the locking device in the open position.

In FIG. 2, the following designations are adopted:

1. Composite rack,

5. Sling,

7. Rope,

9. Safety halyard,

11. Bracket with two-bladed eye,

12. Plate with fixation teeth,

13. Prong fixation,

14. Link,

15. Bolted connection.

In FIG. 3 shows the locking device in the closed position.

In FIG. 3 adopted the following designations:

1. Composite rack,

5. Sling,

7. Rope,

9. Safety rope.

In FIG. 4 shows the attachment point of the upper part of the composite racks.

In FIG. 4 adopted the following designations:

16. Hole for fixing the locking device,

17. Hole for attaching a safety rope.

In FIG. 5 is a front view of the locking device.

In FIG. 5 adopted the following designations:

11. Bracket with two-bladed eye,

12. Plate with fixation teeth,

13. Prong fixation,

14. Link,

15. Bolted connection.

In FIG. 6 shows a general view of the locking devices.

In FIG. 6 adopted the following designations:

11. Bracket with two-bladed eye,

12. Plate with fixation teeth,

14. Link,

15. Bolted connection.

In FIG. 7 shows the link, front view.

In FIG. 8 shows a plate with a fixation tooth, front view.

Implementation of the utility model

The use of the claimed locking device for mounting on a mounting falling boom is explained by the following description.

A device for installing, for example, power line poles (Fig. 1) consists of two composite racks 1 (Fig. 1, 2, 3), each of which consists of two sections. The upper parts of the racks 1 (Fig. 1, 2, 3) are interconnected by the mount (Fig. 4). In the middle of the rack 1 (Fig. 1, 2, 3) are connected by a jumper 2 (Fig. 2) for structural rigidity and for connection with the thrust bearing 3 (Fig. 3). The locking device 4 (Fig. 1) (Fig. 2 and 3) is installed on the node (Fig. 4) in the hole 16 (Fig. 4)

Also in the knot (Fig. 4) there are two holes 17 (Fig. 4) for securing the safety halyard 9 (Fig. 1, 2, 3) (ropes).

When installing the locking device 4 (Fig. 1) (Fig. 2 and 3) on the node (Fig. 4), all fixation teeth 13 (Fig. 2, 5) of four plates 12 (Fig. 2, 5, 6) are installed in the hole 16 (FIG. 4), the locking device 4 (FIG. 1) (FIGS. 2 and 3) is closed. In the closed state, the locking device 4 (Fig. 1) (Fig. 2 and 3) is held by the tension of the cable 7 (Fig. 1, 2,3) and the sling 5 (Fig. 1, 2, 3), which at the moment the start of lifting the support 6 (FIG. 1) are in a perpendicular position with respect to each other.

Plates 12 (Fig. 2, 5, 6), staples with a two-bladed eye 11 (Fig. 2, 5, 6) and links 14 (Fig. 2, 5, 6) are preferably made of sheet steel according to GOST 19903-74 / 09G2S , GOST 19281-2014).

Two slings 5 (Fig. 1, 2, 3) are fixed to the support 6 (Fig. 1) on a "noose", the second ends of the slings 5 (Fig. 1, 2, 3) are fixed in a bracket with a two-bladed eye 11 (it is preferable to use a bracket SK-7-1A) locking device 4 (Fig. 1) (Fig. 2 and 3). The cable 7 (Fig. 1, 2, 3) of the winch 8 (Fig. 1) is attached to a bracket with a two-bladed eye 11 (Fig. 2, 5, 6) (it is preferable to use the SK-7-1A bracket according to GOST 2724-78) on the other side of the locking device 4 (Fig. 1) (Fig. 2 and 3). The angle between the cable 7 (Fig. 1, 2, 3) of the winch 8 (Fig. 1) and the slings 5 (Fig. 1, 2, 3) at the beginning of the lifting of the support 6 (Fig. 1) is 100°. In this position, the locking device 4 (Fig. 1) (Fig. 2 and 3) is closed and held on top of the uprights 1 (Fig. 1, 2, 3). A halyard 9 (Fig. 1) (for example, kapron) is attached to the holes 17 (Fig. 4) of the assembly (Fig. 4), the free end of the halyard 9 (Fig. 1) is threaded through a bracket with a two-bladed eye 11 (Fig. 2, 5 , 6) locking device 4 (Fig. 1) (Fig. 2 and 3).

The falling arrow is installed in the space between the uprights of the support 6 (Fig. 1), the upper part of the falling arrow is raised to the tension of the lines 5 (Fig. 1, 2, 3). The support shoes 10 (Fig. 1) are fixed into the ground with pins through the holes in the shoe plates. The free end of the cable 7 (Fig. 1, 2, 3) is tucked into the winch 8 (Fig. 1), the winch 8 (Fig. 1) is fixed to the car (a car weighing at least 1600 kg is recommended). By manipulating the winch 8 (Fig. 1), the support 6 is lifted (Fig. 1). In the process of lifting the support 6 (Fig. 1), the angle between the cable 7 (Fig. 1, 2, 3) of the winch 8 (Fig. 1) and the slings 5 (Fig. 1, 2, 3) increases and the locking device 4 (Fig. 1) (figs. 2 and 3) gradually opens. When the angle between the cable 7 (Fig. 1, 2, 3) of the winch 8 (Fig. 1) reaches approximately 180°, the locking device 4 (Fig. 1) (Fig. 2 and 3) opens and the top of the falling arrow is released, falling the arrow "hangs" on the safety line 9 (Fig. 1). Holding the end of the halyard 9 (Fig. 1), the falling arrow is carefully lowered to the ground. The rise of support 6 (Fig. 1) is continued until its final translation into a vertical position.

The support 6 (Fig. 1) after installation is fixed in a vertical position, the cable 7 (Fig. 1, 2, 3) of the winch 8 (Fig. 1) is released and dismantled, the locking device 4 (Fig. 1) (Fig. 2 and 3) removed and used when installing the following supports.

The claimed utility model provides a reduction in the complexity of installation work when installing high-rise power transmission towers in hard-to-reach areas without the use of special equipment.

Claims (1)

A locking device for fastening a mounting falling boom, containing four plates with fixation teeth connected to each other on the same axis of rotation, while a bracket with a two-bladed eye is installed to the first pair of plates with fixation teeth, and two links are installed to the second pair of plates with fixation teeth, to which, in turn, are equipped with two brackets with a two-bladed eye.

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