CZ297301B6 - Rotary drive of gates, entries and screens - Google Patents

Abstract

The invented rotary drive, particularly of wing gates, is anchored into a fundament by a flange (13) with a recess (17) for a bottom bearing (5). Two straight guide grooves (12) being arranged parallel to the axis thereof are performed in a supporting tube (1) jacket. A rotary tube (3) forming a jacket of an assembly with two pins (4) for attachment of the gate wing is inserted on the supporting tube (1). A slotted link (2) with two grooves (14) being spirally turned on the majority part thereof is provided in the rotary tube (3). A slider with pins (7) sliding through the spiral (15) passes in those grooves (12) and (14). The spiral is turned by a drive (6) causing thus turning of the tube (3) by an angle given by the design of the groove (14) in the slotted link (2).

Description

(57)

The rotary drive, in particular of the swing gates, is anchored to the foundation by a flange (13) with a shoulder (17) for the lower bearing (5). In the casing of the support tube (1) there are two straight guide grooves (12) parallel to the axis and on this support tube (1) is mounted a rotatable tube (3) forming the casing of the assembly with two pins (4) for attaching the gate leaf. In the rotary tube (3) there is a slider (2) with two mostly spirally curved grooves (14), these slots (12) and (14) run through a runner with pins (7), moved by a helix (15), which rotates the drive (6) and thereby rotates the tube (3) by an angle given by the design of the groove (14) in the link (2).

Rotary drive of swing doors, gates, screens

Technical field

The invention solves the structural arrangement of the rotary drive, in particular of the entrance (fence) gates, doors, doors - single or double wings. Furthermore, the invention allows the actuation of the rotary locks in a similar design as the door (furnace closures, rotary platforms - both horizontal and vertical) and wherever the opening angle needs to be solved such that the rod of another actuator cannot meet this requirement. The present solution operates with an opening angle of several degrees to 360 ° without problems in the design of the drive.

BACKGROUND OF THE INVENTION

[0004] The devices known to date for opening swing doors generally use two types of drive. The first drive is the so-called screw drive, the second type is the hydraulic drive. Both of these drives are mounted outside on the door and are pivotally mounted on pins. They are therefore exposed to the effects of weather and are therefore subject to corrosion (mainly pivot pins). Another drawback is the pivot itself. If the drive needs to be replaced, the bolt must be detachable and disassembly is therefore possible for unauthorized entry. Certainly this connection can be secured, but this problem is difficult to solve while maintaining the requirement of demountability.

Another drawback with existing drives is the need to have a large opening angle (over 90 °). If we use these screw or hydraulic drives, we are not able to realize such large opening angles (we can use a system of levers, but this creates a complex device, apart from the complexity and thus failure of the structure, there is a problem how to avoid the risk of injury!).

Last but not least, it is possible to use the “underground” drive. Another drawback is the fact that these drives are used with opening angles up to about 110 °.

Another visible problem is the constant opening or closing speed of the gate. If we need a soft start solution, it is necessary to use electronic circuits.

SUMMARY OF THE INVENTION

The essence of the rotary drive, consisting of a main rotating tube with a sliding block, a stable support tube with a guide groove, a double-pivot runner and a drive unit, consists of the guide groove in the stable support tube anchored to the torque of the drive unit. into the foundation and the backdrop which is part of the upper rotary tube that carries the gate wing. The guide groove and the slide are concentric with a small gap and in the grooves which are milled the two-sided pivot moves. Axial movement of this pin (this movement is provided by the drive unit) rotates the gate and consequently the gate leaf rotation. The guide groove is parallel to the axis of rotation. The swivel has a groove that starts vertically (a position parallel to the pivot axis and the guide groove), then turns into a spiral arc (this arc determines acceleration of the swivel arm from zero to maximum speed), incline and spiral length determine speed and length of gate travel (the arc determines the deceleration of movement) becomes vertical (parallel to the axis of rotation). By the described shape (parameters) of the groove we can achieve exactly given gate position.

In both positions described as being parallel to the axis of rotation, the gate (pin between two parallel grooves) is secured against manipulation with the gate's wing, even in the event of a drive failure or because a non-self-locking drive has been used.

-1 CZ 297301 B6

The main advantage is the use of the "wedge" principle, which consists of a double pivot pin, guide groove and slide with swivel tube. By moving the pin in the guide groove, a "wedge" (pin) is pressed between the straight guide groove and the inclined groove in the link, which is thus pushed into the required position. Another advantage of this solution is that the speed of movement of the gate is dependent not only on the speed (revolutions) of the drive, but also on the shape of the groove in the swing gate. By combining these factors, we can achieve a wide range of gate speeds and the shape of the gate groove directly determine the softness of the gateway start and stop, without the need for electronic regulation and the associated complexity of control circuits.

Overview of pictures

The attached figures show the individual parts of the rotary drive, especially the swing gates.

fig. 1. front cover, lower and upper bearing in front view fig. 2. fixed support pipe in front view fig. 3. rotary pipe in front view fig. 4. drive unit with runner in front view fig. 5. assembly of rotary drive in front view

DETAILED DESCRIPTION OF THE INVENTION

The attached figures show the basic parts of the assembly. The assembly consists of a fixed support tube 1 with two milled guide grooves 12, a shoulder 16 for supporting the drive unit 6, a shoulder 17 and 18 for bearings 5 and 9 at both ends and a base foot 13 at the bottom. the tube 3, supported at both ends in bearings 5 and 9, externally provided with two pins 4 for fastening the gate leaf. Into the rotary tube 3 is inserted sliding shaft 2 provided with two milled spiral grooves 14 and the design of these grooves 14 determines the rotation of the tube 3 at the desired angle of rotation. To the rotatable tube 3, the slide 2 is welded with pre-drilled holes 19 in the housing of the rotatable tube 3. The assembly of tubes 1 and 3, of the bearings 5 and 9 forms a rotatable assembly. A runner with two pivot pins 7 is inserted into the carrier tube 1 and into the guide grooves 12 and the spiral grooves 14. The runner with the pins 7 is moved by the helical 15 of the drive unit 6 and is moved by the grooves 12 and 14. position. The entire assembly is covered by a cover 8 that secures the upper bearing 9 and includes bolt holes 20 fastening the cover 8 to the assembly. In the lower part of the lid 8 there is a lock 11 which secures the lid 10 covering the drive 6 and the fastening screws 20 and prevents tampering. In the case of heavier gates, the cover 8 can be used to attach to the auxiliary beam and thus avoid bending the support tube 1 due to the weight of the gate.

Industrial applicability

The rotary drive according to the invention can be used wherever we use doors, gates, hinged lids or other structures based on the rotation of an object about an axis, while the axis of rotation can be at different angles. In case of need of drive in new constructions the use is without problems, retrofitting is possible after replacing the existing hinges with this assembly without the necessity to demolish the supporting column or profile. In many cases the use of other drives does not suit existing hinges and is replaced by new ones. The resulting smooth start-up and run-out is desirable in all constructions, it is easy to implement and unchangeable.

Claims (4)

PATENT CLAIMS 1. The rotary drive, in particular of the swing gates, is anchored to the ground by a flange (13) with a shoulder (17) for the lower bearing (5), characterized in that two straight guide grooves (12) parallel to the axis and on this support tube (1) is mounted a rotatable tube (3) forming a casing of the assembly with two bolts (4) for attaching the gate leaf and in the rotatable tube (3) is mounted a slide (2) with two mostly helically coiled grooves (14), through these grooves (12) and (14), a runner with pins (7) passes through a helix (15), which rotates the drive (6) and thereby rotates the tube (3) by the angle given by the groove (14) (2). Rotary drive of the swing gates in particular according to claim 1, characterized in that the grooves (12) and (14) are structurally doubled and rotated relative to each other by 180 °, thereby improving the guidance of the pins (7) and substantially reducing the stresses of all contact surfaces and helix (15). The swing gate rotary drive according to claim 1, characterized in that the first part, about 1/5 of the length of the grooves (14) is parallel to the axis of the link (2), further about 3/5 of the length of the grooves (14) are spirally twisted. along the circumference of the link (2) by the desired angle of rotation and at the lower 1/5 of the length of the grooves (14) are guided again parallel to the axis of the link (2). Rotary swing gate operator according to claim 3, characterized in that the pitch angle of the groove (14) can be selected in the range of 1 ° to 45 ° over the entire length of the helical twist of the groove (14).