EP3969692A1

EP3969692A1 - Telescopic mast system

Info

Publication number: EP3969692A1
Application number: EP20810776.3A
Authority: EP
Inventors: Mert GÜRGEN
Original assignee: Altinay Savunma Teknolojileri AS
Current assignee: Altinay Savunma Teknolojileri AS
Priority date: 2019-05-17
Filing date: 2020-05-15
Publication date: 2022-03-23
Also published as: TR201907461A2; EP3969692A4; WO2020236114A1

Abstract

The invention relates to a telescopic mast which is easy to manufacture, easy to install and disassemble, considerably safe and comprising at least two tubes with a first tube (41) and a second tube (42) such that it can be transformed into the open state and into the closed state in a very short time and very easily.

Description

Telescopic Mast System DESCRIPTION

Technical Field

The invention relates to telescopic masts.

In particular, the invention is related to telescopic masts, which can be in a closed state, where it takes up minimum amount of volume, and which can be in an open state, where it is at the maximum height that the object on it can go up to.

State of the Art

Telescopic mast systems are used to raise objects. Telescopic mast systems are used to move the object on the mast on a single axis (usually up and down). The object being carried may be a camera, antenna, or any material imaginable. Telescopic masts can be in two basic states, closed and open. The closed state corresponds to the minimum volume of space covered; the open state represents the maximum height at which the object can go up to.

In current applications, telescopic masts are used to move the object on it. Since the operation principle is opening and raising the closed system, such systems mainly operate based on nested tubes. Said tubes can be composed of different sizes and not less than two pieces which can reach a maximum height which is statically safe. These tubes can be made of steel, aluminum, composite or other materials. The telescopic masts used in current applications differ from each other. In practice, the most common situation is that the tubes are locked to each other by means of a mechanical structure called a lock automatically or manually when they reach the maximum height and thus remain stable. But these locks may break down due to factors such as dust, soil, etc. Some of the telescopic masts perform better in bad weather conditions, while some are able to lift and lower heavier loads. Different designs are mainly subjected to different fault mechanisms. Problems such as the locks failing to lock or release, jamming of mechanisms due to introduction of sand, dust or other particles and bending or breaking of the masts in windy weather conditions are encountered. Various studies are carried out in order to eliminate these problems as much as possible.

Some embodiments have been proposed in order to solve the aforementioned problems. For example, in the patent application number TR 2017 / 03238, a reliable telescopic mast, which does not cause dropping while transforming from the closed state to the open state or transforming from the open state to the closed state, does not generate noise, does not separate while being moved in the closed state, does not require human intervention or any separate power supply, comprising at least one turning element, a hollow telescopic element, a hollow intermediate telescopic element, a first protrusion extending towards the intermediate telescopic element, at least one thrust body, at least one lock mechanism, at least one lock bolt and at least a second protrusion which move the intermediate telescopic element upward is provided. However, in the patent in question, installation and disassembly of the telescopic mast is not easy.

In the patent application number EP2147174B1 , a telescopic mast which at least includes one or more telescoping joints is provided, where a telescoping joint consists of two telescoping sections dimensioned so that one section can be moved into another section, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator urging the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints and offset at the internal periphery and where, by disposing actuators offset at the inner periphery of the telescoping sections, several advantages are achieved and where he actuators are provided at a protected location, and the actuators may be designed with lengths overlapping each other when the telescopic mast is collapsed. However, in the invention in question, it is very difficult to put it into open and closed states. This brings along the problem of shipping.

In the patent application number DE361 1810, an extending telescopic mast with a centrally arranged lead screw drive was provided. In the patent in question, the locks have been completely eliminated. In the invention, with the contamination of any ball system, a jam occurs at two stages in direct contact. Following this jam, the other non - directly connected masts continue to maintain their function, meaning that they can continue this design function partially in case of emergency. On the other hand, with dirt, soil etc. introduced between the balls, inevitable and permanent mechanical failures are encountered and therefore, the masts fail to transform into the fully closed state. This can also lead to a logistics problem. Apart from these, the design and manufacture of this ball bearing system is difficult and expensive. Very precise workmanship is needed for the nesting of the masts.

As a result, all these problems have made it necessary to make a development in the relevant technical area.

Brief Description of the Invention

The present invention relates to telescopic masts that can stand in an open state and in a closed state. The main aim of the invention is to create a telescopic mast that is easy to manufacture, easy to install and disassemble, has high reliability and can easily transform into the open state and the closed state.

Another aim of the invention is to provide a telescopic mast that can be easily moved in the closed state without shipping problems.

Another aim of the invention is to provide a telescopic mast that is more dust and dirt - proof.

Another aim of the invention is to provide a telescopic mast having no difficulty in transforming into the closed state in the event of jamming.

In order to achieve all of the aforementioned purposes along with those that can be inferred from the detailed description given below, the invention is a telescopic mast which is easy to manufacture, easy to install and disassemble, considerably safe and comprising at least two tubes with a first tube and a second tube such that it can be transformed into the open state and into the closed state in a very short time and very easily.

All features and advantages of the invention shall become apparent by the drawings given below and the detailed description with reference to these drawing, therefore, the assessment should be made by taking into consideration the description and drawings.

Brief Description of Drawings

Figure 1 shows a cross - section of the overall invention.

Figure 2 shows a cross - section of the lower part of the invention.

Figure 3 shows a cross - section of the upper part of the invention.

Reference Numbers Given in the Figures

1 1 First lead screw

12 Second lead screw

13 Third lead screw

14 Fourth lead screw

15 Fifth lead screw

21 First nut

22 Second nut

23 Third nut

24 Fourth nut 25 Fifth nut

31 First flange set

32 Second flange set

33 Third flange set

34 Fourth flange set

41 First tube

42 Second Tube

43 Third tube

44 Fourth tube

45 Fifth tube

51 First lead screw bearing

52 Second stage bottom bearing

53 Third stage bottom bearing

54 Fourth stage bottom bearing

55 Fifth stage bottom bearing

61 First stopper

62 Second stopper

63 Third stopper

64 Fourth stopper

65 Fifth stopper

70 Payload platform

Detailed Description of the Invention

The invention is a telescopic mast which is easy to manufacture, easy to install and disassemble, considerably safe and comprising at least two tubes with a first tube (41 ) and a second tube (42) such that it can be transformed into the open state and into the closed state in a very short time and very easily. Said telescopic mast comprises

• a first lead screw (1 1 ) where the torque from a motor output shaft is transferred through a sprocket on a drive line driven by the motor, in order to raise the tubes, • a first nut (21 ) which establishes the connection between the first tube (41 ) and the first lead screw (1 1 ),

• a first flange set (31 ) which transfers the motion of the first nut (21 ) from the first lead screw (1 1 ) to the first tube (41 ),

• a first lead screw bearing (51 ), which provide a bearing for the first lead screw (1 1 ) for bearing the axial loads exerted on the system,

• a first stopper (61 ) which stops the motion of the first nut (21 ) moving on the first lead screw (1 1 ),

• a payload platform (70), where the connection of the product desired to be raised at the top end of the telescopic mast is established.

The invention, an overview of which is given in Figure 1 , comprises nested tubes. The invention preferably uses five tubes, namely the first tube (41 ), the second tube (42), the third tube (43), the fourth tube (44) and the fifth tube (45). The number of tubes in alternative embodiments of the invention may be more or less. The diameters of the tubes may vary according to the weight of the product to be raised. When heavier objects will be raised with the telescopic mast system, the diameters of the tubes are larger, and when lighter objects will be raised, the diameters of the tubes are smaller. The telescopic mast can be in the open state or the closed state. When the telescopic mast is in the closed state, the tubes are nested; when it is in the open state, the tubes are extended upwards through each other in a telescopic manner. The motion of the tubes are provided by the lead screw (1 1 ). The motion of the first tube (41 ) is provided by the first lead screw (1 1 ), the motion of the second tube (42) is provided by the second lead screw (12), the motion of the third tube (43) is provided by the third lead screw (13), the motion of the fourth tube (44) is provided by the fourth lead screw (14), the motion of the fifth tube (45) is provided by the fifth lead screw (15). The first tube (41 ) and the first lead screw (1 1 ) are connected to each other by the first nut (21 ) and the first flange set (31 ). The first lead screw (1 1 ) rotates the first nut (21 ), to which it is connected, by delivering its motion to the first nut (21 ). The connection of the first (rod) to the first tube (41 ) is established by the first flange set (31 ). The first nut (21 ) transfers the motion from the first lead screw (1 1 ) to the first tube (41 ) via the first flange set (31 ).

The second lead screw (12) transfers the motion to the second tube (42) via the second nut

(22), the third lead screw (13) transfers the motion to the third tube (43) via the third nut

(23), the fourth lead screw (14) transfers the motion to the fourth tube (44) via the fourth nut

(24), and the fifth lead screw (15) transfers the motion to the fifth tube (45) via the fifth nut

(25). The connection between the second nut (22) and the second tube (42) is established through the second flange set (32), the connection between the third nut (23) and the third tube (43) is established through the third flange set (33), and connection between the fourth nut (24) and the fourth tube (44) is established through the fourth flange set (34).

Referring to figure 2, the lead screw bearing (51 ) element is used between the lead screw and the nut, in order to ensure that, during the motion of the the first tube (41 ), the second tube (42), the third tube (43), the fourth tube (44) and the fifth tube (45), torques of the lead screw are used only for the motion of the tube connected with itself. There is a second stage bottom bearing between the second lead screw (12) and the second tube (42), a third stage bottom bearing (53) between the third lead screw (13) and the third tube (43), a fourth stage (54) bottom bearing between the fourth lead screw (14) and the fourth tube (44), a fifth stage bottom bearing between the fifth lead screw (15) and the fifth tube (45). The stage bottom bearings are radial ball bearings. The stage bottom bearings facilitate the movement of the nut and allow this nut to rotate freely as the parts move. The torque is used only in the first stage in the movement of the first stage due to the stage bottom bearings. For this reason, when the course is completed, the mentioned stage rotates freely and the movement is transmitted to the other stages without requiring any torque. For bearing the axial loads exerted on the system, bearing for the first lead screw (1 1 ) is provided by the first lead screw bearing (51 ). The first lead screw bearing (51 ) is an inclined ball bearing.

In reference to Figure 3, the first stopper (61 ) is used to stop the motion of the first nut (21 ) moving on the first lead screw (1 1 ). When the upper surface of the first lead screw (1 1 ) reaches the first stopper (61 ), its motion is terminated. Similarly, the motion of the second lead screw (12) is terminated by the second stopper (62), the motion of the third lead screw (13) is terminated by the third stopper (63), the motion of the fourth lead screw (14) is terminated by the fourth stopper (64), and the motion of the fifth lead screw (15) is terminated by the fifth stopper (65). The payload platform (70) is introduced at the top end of the telescopic mast. Connection of the desired product to be raised is established with the payload platform (70). The product raised to the topmost point when the platform is opened is secured safely by means of the payload platform (70).

According to what is described above, the implementation of the invention is carried out as follows. Through the drive line driven by a motor (not shown in figures), the torque from the motor output shaft is transferred to the first lead screw (1 1 ) by means of the sprocket in order to raise the tubes. The first lead screw (1 1 ) starts rotating the first nut (21 ), to which it is connected, by delivering its motion to the first nut (21 ). The first flange set (31 ), which provides the connection between the first nut (21 ) and the first tube (41 ), and the first tube (41 ) begin to rise. When the upper surface of the first lead screw (1 1 ) reaches the first stopper (61 ), its motion is terminated. Thus the second lead screw (12) begins to move. The second lead screw (12) begins to rotate the second nut (22) by transferring its motion to the second nut (22) which is attached to it. The second flange set (32), which provides the connection between the second nut (22) and the second tube (42), and the second tube (42) begin to rise. When the upper surface of the second lead screw (12) reaches the second stopper (62), its motion is terminated. Thus the third lead screw (13) begins to move. The third lead screw (13) begins to rotate the third nut (23) by transferring its motion to the third nut (23) which is attached to it. The third flange set (33), which provides the connection between the third nut (23) and the third tube (43), and the third tube (43) begin to rise. When the upper surface of the third lead screw (13) reaches the third stopper (63), its motion is terminated. Thus the fourth lead screw (14) begins to move. The fourth lead screw (14) begins to rotate the fourth nut (24) by transferring its motion to the fourth nut (23) which is attached to it. The fourth flange set (34), which provides the connection between the fourth nut (24) and the fourth tube (44), and the fourth tube (44) begin to rise. When the upper surface of the fourth lead screw (14) reaches the fourth stopper (64), its motion is terminated. Thus the fifth lead screw (15) begins to move. The fifth lead screw (15) begins to rotate the fifth nut (25) by transferring its motion to the fifth nut (25) which is attached to it. The bolt, which provides the connection between the fifth nut (25) and the fifth tube (45), and the fifth tube (45) begin to rise. When the upper surface of the fifth lead screw (15) reaches the fifth stopper (65), its motion is terminated. Thereby, the payload platform (70) reaches the maximum height. Bearing in the system is provided by radial ball bearings between the lead screws and nuts in each stage except the last stage. The torque is used only in the first stage in the movement of the first stage due to this bearing. When the stroke is completed, the mentioned stage rotates freely and the movement is transmitted to the other stages without requiring any torque.

Therefore, with the invention, a telescopic mast that is rather easy to manufacture, easy to install and disassemble, has high reliability and can easily transform into the open state and the closed state is provided. Depending on the friction of the bearing elements, which are not shown in the system, the operation order of the system changes.

Claims

1. A telescopic mast which is easy to manufacture, easy to install and disassemble, considerably safe and comprising at least two tubes with a first tube (41 ) and a second tube (42) such that it can be transformed into the open state and into the closed state in a very short time and very easily, characterized by comprising;

• a first lead screw (1 1 ) where the torque from a motor output shaft is transferred through a sprocket on a drive line driven by the motor, in order to raise the tubes,

• a first nut (21 ) which establishes the connection between the first tube (41 ) and the first lead screw (1 1 ),

2. The telescopic mast according to claim 1 , characterized by comprising; a third tube (43) which is connected to the second tube (42) and which extends telescopically and becomes nested when closing.

3. The telescopic mast according to claim 2, characterized by comprising; a fourth tube (44) which is connected to the third tube (43) and which extends telescopically and becomes nested when closing.

4. The telescopic mast according to claim 3, characterized by comprising; a fifth tube (45) which is connected to the fourth tube (44) and which extends telescopically and becomes nested when closing.

5. The telescopic mast according to claim 1 , characterized by comprising; a second lead screw (12) which provides the up - down motion of the second tube (42).

6. The telescopic mast according to claim 1 , characterized by comprising; a third lead screw (13) which provides the up - down motion of the third tube (43).

7. The telescopic mast according to claim 1 , characterized by comprising; a fourth lead screw (14) which provides the up - down motion of the fourth tube (44).

8. The telescopic mast according to claim 1 , characterized by comprising; a fifth lead screw (15) which provides the up - down motion of the fifth tube (45).

9. The telescopic mast according to claim 1 , characterized by comprising; a second stage bottom bearing (52) introduced between the second lead screw (12) and the second tube (42) where the motion is transmitted to other stages without requiring any torque with the stage in question rotating freely when the course is completed, in order to ensure that, in the motion of the first tube (41 ), the second tube (42), the third tube (43), the fourth tube (44) and the fifth tube (45), lead screw torques are used only for the motion of the tube connected to them.

10. A telescopic mast according to claim 1 or claim 9, characterized by comprising; a third stage bottom bearing (53) introduced between the third lead screw (13) and the third tube (43).

11. A telescopic mast according to claim 1 or claim 9, characterized by comprising; a fourth stage bottom bearing (54) introduced between the fourth lead screw (14) and the fourth tube (44).

12. A telescopic mast according to claim 1 or claim 9, characterized by comprising; a fifth stage bottom bearing (55) introduced between the fifth lead screw (15) and the fifth tube (45).

13. The telescopic mast according to claim 1 , characterized by comprising; a second nut (22) which establish the connection between the second tube (42) and the second lead screw (12).

14. The telescopic mast according to claim 1 , characterized by comprising; a third nut (23) which establish the connection between the third tube (43) and the third lead screw (13).

15. The telescopic mast according to claim 1 , characterized by comprising; a fourth nut (24) which establish the connection between the fourth tube (44) and the fourth lead screw (14).

16. The telescopic mast according to claim 1 , characterized by comprising; a fifth nut (25) which establish the connection between the fifth tube (45) and the fifth lead screw (15).