RU2383972C1 - Hoisting device for antenna mast - Google Patents

Abstract

FIELD: physics; radio.

SUBSTANCE: invention relates to antenna engineering and is meant for use in mobile antenna units and mobile radio systems. The device has a movable pivot arm, a support for the arm in form of a vertical shaft mounted on a base which is made with possibility of mounting onto a vehicle, and a clamping device for the mast attached to the free end of the arm with possibility of rotation in the vertical plane. The clamping device is attached to the arm through a friction coupling. The housing of the coupling is mounted on the free end of the arm with possibility of turning about the arm in the horizontal plane. The device is fitted with two articulated tie rods, with the free end of one of the tie rods rigidly attached to the housing and the free end of the other pivotally connected to the base of the vertical shaft with formation of a pantograph type mechanism between the tie rods and the arm.

EFFECT: improved operational characteristics and avoiding possibility of collision of the mast with the side surface of the vehicle during installation.

6 cl, 6 dwg

Description

A well-known lifting machine for deploying a telescopic tubular mast containing a base, supporting the mast supporting elements and a mast lifting mechanism (see materials of the site http://www.machta.ru/production/mars/gallery.php). The elevator is characterized by quick mast deployment, small dimensions and ease of use. However, the aforementioned device does not allow to hold the mast in a horizontal transport position and cannot be used in a mobile mobile installation without significant modifications.

A lifting device for an antenna mast is known, comprising a base configured to be mounted on a vehicle platform, support elements for the mast, and a mechanism for lifting it from a transport horizontal position to a working vertical position (patent No. 2200359, IPC: H01Q 1/10, publ. 2003.03 .10). The ability to mount the device on a vehicle allows it to be used in mobile mobile radio complexes. A disadvantage of the known device is the inability to install the mast outside the vehicle. The mast, both in the transport and in the raised working position, is supported on the vehicle platform, as a result of which it is necessary to equip the latter with additional supports and leveling devices. In addition, the mast is lifted by turning it in a vertical plane around a hinge arranged at the base, which requires the use of a powerful power drive.

There is a known lifting device manufactured by the company Radiotorg LLC in St. Petersburg, which holds the mast during transportation and ensures that the mast is lifted to a vertical working position with installation outside the vehicle, i.e. “On the ground” (see the materials of the site: http: // www: machty.ru/ustanovka). The lifting device comprises a base configured to be mounted on the vehicle body, a holder covering the mast behind the trunk, and a mechanism for moving the holder with the mast from the transport horizontal position to the vertical working position. The disadvantages of the known device include the difficulty of lifting and turning the mast in a vertical plane, as a result of which it is possible to hit the stand of the holder with the mast on the side of the vehicle. To facilitate the movement of the holder and prevent a possible blow, the device uses a trolley fixing system, which greatly complicates and aggravates the device.

As the closest analogue to the claimed solution for the presence of similar structural features, the device for transporting and lifting a compact 25-meter telescopic mast ТМ 170 / 25-4.8 of the Swedish company WIBE was adopted (see materials of the site http.//www.almelektionika.com/atm/ pliki / sieci / maszty / tml70_25-4_8.pdf). The device comprises a movable console, a support for this console, made with the possibility of fixing on the horizontal surface of the vehicle, and a clamp holding the mast for the trunk, mounted on the free end of the console with the possibility of rotation in a vertical plane. Due to the translational movement of the console in the guide rails of the support, the clamp with the mast is driven out of the vehicle, and due to the possibility of turning the clamp, the mast is raised to the vertical operating position. In this device, in comparison with the known vertical mast lifting-turning, the loads on the working mechanisms are significantly reduced, and at the same time, the mast does not collide with the side of the vehicle due to the perpendicularity of the placement of the console guides with respect to the side of the vehicle, near which the mast is mounted.

The disadvantage of this device is the need to fix the clamp or, on the contrary, weaken this fixation in order to rotate it, which is carried out manually by turning the corresponding handle-control lever. The need to provide access to the said control lever complicates the operation of the device, limits the ability to install the device on large vehicles, such as cars with a booth. In addition, the telescopic design of the console degrades the performance of the device, especially in cold and bad weather conditions.

Disclosure of invention

The objective of the invention is to improve the operational characteristics of a lifting device that allows you to hold the mast in the process of transportation, to lift the mast in a vertical position with its installation on the ground or other base, and eliminating the collision of the mast with the side of the vehicle with this installation.

The technical results of the claimed invention are: the ability to remotely control the rotation of the clamp, which facilitates the operation of the device, increasing the operational reliability of the device and expanding its operational capabilities.

The solution of this problem and the achievement of the aforementioned technical results is ensured by the fact that in the lifting device for the antenna mast containing the movable console, a support for this console, made with the possibility of mounting on the vehicle, and a mast clamp mounted on the free end of the console with the possibility of rotation in the vertical plane, according to the claimed invention, the support is made in the form of a vertical axis fixed to the base, the console is mounted on this axis with the possibility of rotation relative to it in the horizontal plane, the clamp is secured by means of a friction clutch, the body of which is mounted on the free end of the console with the possibility of rotation relative to it in the horizontal plane, while the device is equipped with two articulated rods, the free end of one of which is rigidly connected to the body, and the free end of the other is pivotally connected to the base of the vertical axis with the formation of a pantograph-type mechanism between the rods and the console.

The implementation of the movable console in the form of a rotary console, pivotally mounted on a vertical axis, made it possible to simplify the manufacture of the device, increase the operational reliability of the console unit: reduce its dependence on climatic conditions, pollution, etc., thereby improving the operational characteristics of the device as a whole.

Fixing the clamp on the free end of the console by means of a friction clutch eliminated the need for manual fixing of the clamp relative to the console. The rotation of the console, allowing the mast to be led overboard the vehicle, and the turn of the clamp with the mast to a vertical position are carried out remotely, for which, for example, a rope can be used. The friction clutch ensures smooth rotation of the clamp and its self-braking after removal of drive forces.

The possibility of the mentioned remote control and the elimination of the need for access to the fixing unit of the clamp on the console allowed not only to facilitate the installation of the mast "on the ground", but also provided the ability to install the inventive device on any height vehicles without compromising the operational characteristics of the device.

The inventive device uses a fundamentally different design of the console unit from the prototype: in the form of a rotary mechanism, in connection with which there is a danger of collision of the mast with the side of the vehicle when it is installed.

The aforementioned danger was eliminated due to the creation of a “pantograph” -type mechanism, formed by fixing the coupling body (fixed part) on the free end of the console with the possibility of rotation relative to it in the horizontal plane, and introducing a pair of articulated rods.

The mechanism of the "pantograph" is a hinged parallelogram. In the claimed device, the sides of such a parallelogram are two rods, the console and the base section between the vertical axis of the console and the fixing point on the base of the rod. The hinges of the parallelogram form: the hinge support of the console, the articulation of the rods, the articulation of one of the rods on the base and the articulation of the housing at the end of the console.

The presence of a pantograph mechanism in the device allows, regardless of the position of the console, to ensure a constant orientation of the body, and hence the clamp attached to it with the mast. The mast is always oriented parallel to the plane of the side of the vehicle, near which the mast is installed, regardless of the angle of rotation of the console, which eliminates the possibility of its collision with this side during a turn in the vertical plane. This allows for high-quality installation of the mast in various conditions on any soil.

Thus, the inventive device allows you to perform the same functions as the device in the prototype, namely, it ensures the retention of the mast during transportation to the installation site, provides the lifting and installation of the mast on the ground or other base and eliminates the possibility of collision of the mast with the side of the vehicle, and at the same time has higher operational characteristics.

The mast can be fixed in the working vertical position by any known method.

The clamp, while continuing to cover the trunk of the installed mast, can serve as an additional support for the mast.

The ability to rotate the housing in the horizontal plane can be realized by installing it on a vertical axis, fixed in the eyes of the bracket, made on the free end of the console.

To fix the console in the working and transport positions, a latch mounted on the base is used.

In a specific case, the execution of the traction device is made in the form of hollow levers of a curved shape, which also improves their operational characteristics. A specific form of execution of the levers associated with the structural design of the base and other elements of the device.

The inventive lifting device is intended mainly for masts having a tubular body: solid or telescopic

The device can be installed on cars with a booth or a warm body (kung), allowing you to organize a whole complex of mobile radio communications of rapid deployment. Such cars are most widely used for military, expeditionary, shift and other purposes requiring communication. The device is mounted on the roof of the kung, while due to the simplicity and minimal size of the structure, optimal use of the space on the roof of the vehicle is ensured.

The aforementioned advantageous use of the device does not limit the possibilities of otherwise securing the device, for example, on the platform of another wheeled or tracked vehicle.

To facilitate the design, it is preferable to manufacture device elements using perforated materials: sheet, angle and T-bars, as well as the use of hollow pipes. This embodiment of the elements of the device allows you to maximize the design, which is especially important when fixing the device on the roof of the vehicle. At the same time, the design is sufficiently strong and rigid, which ensures the reliability of the device.

Brief Description of the Drawings

The design of the inventive lifting device and its operation are illustrated by drawings, where in Fig.1 - shows a General view of the device, isometry;

figure 2 is a section aa from figure 1, shows the mounting node of the clamp on the free end of the console;

figure 3 - schematically shows a device mounted on a vehicle, a top view, the transport position;

figure 4 is the same, the console in the working position, perpendicular to the side of the vehicle, the mast is parallel to the board;

figure 5 is the same, shows an example of deviation of the console from a perpendicular position;

Figure 6 - the device in the working position, General view, isometry.

The implementation of the invention

The lifting device comprises (see FIG. 1) a base 1 with a vertical axis 2 rigidly fixed thereon, a console 3 mounted on the axis 2 with a possibility of rotation in the horizontal plane, and a clamp 4 fixed on the free end of the console 3 by means of a friction clutch, the housing 5 which is mounted on a vertical axis 6, mounted in the eyes of the bracket 7, made on the free end of the console 3. The housing 5 has the ability to rotate in a horizontal plane relative to the end of the console 3. As a result, the clamp 4 has two degrees of mobility tnositelno console 3: rotatable in the vertical and horizontal planes.

A possible design of the mounting bracket of the clamp 4 is shown in figure 2. The friction clutch holds the clamp 4 from axial movement, while it has the ability to rotate in a vertical plane perpendicular to the plane of the console 3.

The device includes a pair of articulated hollow levers - rods 8 and 9. The free end of the rod 8 is pivotally mounted on the base 1, and the free end of the rod 9 is rigidly connected to the housing 5. The levers 8 and 9 form together with the base 1 and console 3 mechanism " pantograph. "

On the basis of 1 mounted rotary latch 10 for fixing the console 3 in its transport and operating positions.

The device operates as follows.

The base 1 with the remaining elements of the device mounted on it is fixed on the roof of the vehicle body 11. The mast 12 (conventionally shown in the drawing) is placed and secured in the clamp 4. In the transport position (see figure 3), the mast 12 is held by the clamp 4, located on the vehicle roof in a horizontal position parallel to the longitudinal side 13 of the vehicle. The console 3 also tends to parallel with the above-mentioned side, and is fixed in this position by means of the latch 10.

By means of the vehicle 11, the device is moved to the deployment site. Turning the console 3 90 degrees (see Fig. 4) leads the mast 12 in a horizontal position outside the vehicle 11. At the same time, the rods 8 and 9 hold the housing 5 so that the mast 12, regardless of the position of the console 3, is oriented parallel to the plane of the bead 13 vehicle 11. By turning the clamp 4 with the mast 12 translate the latter into a vertical position. Due to the fact that the parallelism of the mast 12 to the side 13 of the vehicle was previously maintained, the possibility of its collision with this side during a turn to the vertical position is excluded.

Figure 5 shows the case when the console 3 is deviated from the position perpendicular to the board 13. In this case, the pantograph mechanism also works: the rods 8 and 9 hold the housing 5, ensuring parallelism of the mast 12 to the side 13 of the vehicle 11 and protecting the mast from collision during its turn.

To install the mast on the ground, loosen the clamp 4, and the mast 12 under the influence of gravity falls to the ground, while the clamp 4 acts as a guide and supporting element, providing the mast 12 with additional support (see Fig.6). The mast is rolled up in the reverse order.

Thus, the inventive device provides reliable retention of the mast during transportation and the rapid deployment and folding of the mast with installation on the ground, including on an unprepared surface.

The inventive elevator has a simple and reliable design, both in manufacture and in service, characterized by high-quality work in any climatic conditions.

The device is characterized by low time and effort for installation, high safety.

Claims (6)

1. The lifting device for the antenna mast, containing a movable console, a support for this console, made with the possibility of mounting on a vehicle, and a mast clamp mounted on the free end of the console with the possibility of rotation in a vertical plane, characterized in that the support is made in the form the vertical axis mounted on the base, the console is mounted on this axis with the possibility of rotation relative to it in the horizontal plane, the clamp is secured by means of a friction clutch, the housing of which mounted on the free end of the console with the possibility of rotation relative to it in a horizontal plane, while the device is equipped with two articulated rods, the free end of one of which is rigidly connected to the body, and the free end of the other is articulated with the base of the vertical axis with the formation between the rods and console mechanism type pantograph. 2. The device according to claim 1, characterized in that the housing can be rotated by installing it on a vertical axis fixed in the eyes of the bracket, made on the free end of the console. 3. The device according to claim 1, characterized in that the console is made with the possibility of fixing in the working and transport positions. 4. The device according to claim 1, characterized in that the vehicle used is a car with a booth or a closed body, the base being fixed to the roof of the booth or body. 5. The device according to claim 1, characterized in that the thrust is made in the form of hollow levers of curved shape. 6. The device according to claim 1, characterized in that the elements of the device are made lightweight due to their manufacture from perforated sheet and / or rolled steel and pipes.

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