Radiator fin conveying device

Abstract

The utility model discloses a radiator fin conveying device, and relates to the technical field of conveying devices, the radiator fin conveying device comprises a plurality of support columns, the plurality of support columns are arranged in two rows in parallel, the support columns in each row are connected through sliding seats, a plurality of first transmission columns are rotatably mounted on the two sliding seats, and a plurality of second transmission columns are rotatably mounted on the first transmission columns. Each first transmission column is provided with two first belt wheels and a rotating column, every two adjacent first transmission columns are connected through a belt, a double-shaft motor is installed at the conveying starting position and connected with the first transmission column at the starting position through a belt, and when fins are conveyed, the double-shaft motors are started, and the rotating columns are connected with the first transmission columns at the starting position through a belt. The double-shaft motor drives the first transmission columns to rotate through belt transmission, the adjacent first transmission columns can rotate synchronously through the belt transmission effect, the first transmission columns drive the rotating columns to rotate in the rotating process, the fins are conveyed in the conveying direction when the rotating columns rotate, the workload of workers is reduced, and the production efficiency is improved.

Description

A radiator fin conveying device Technical Field

[0001] This utility model relates to the field of conveying device technology, specifically a radiator fin conveying device. Background Technology

[0002] Finned radiators utilize fins to increase the heat dissipation area, thereby improving heat dissipation efficiency. The core principle is to increase the surface area of ​​the radiator, reduce thermal resistance, and effectively improve heat transfer efficiency. Compared with traditional radiators, finned radiators have stronger heat dissipation capabilities and can quickly dissipate heat in a short time. Therefore, the production of fins is crucial. The production of radiator fins requires multiple processes, and fins need to be transported between each process.

[0003] Under current technology, radiator fins are mostly transported manually over short distances, while vehicles are used for long distances. However, manual labor is still required for transfer, resulting in high labor intensity and low production efficiency for workers.

[0004] Therefore, there is a need for a radiator fin conveying device to transport radiator fins between different processes, in order to reduce the workload of workers and improve production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a radiator fin conveying device to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The radiator fin conveying device includes several pillars arranged in two parallel rows. Each row of pillars is connected by a slide block. Several through holes are provided on each of the two slide blocks. A first transmission column is rotatably mounted on each of the through holes. Two first pulleys are mounted on the first transmission column. A rotating column is mounted on the side of the first transmission column away from the first pulleys. Every two adjacent first transmission columns are connected by a first pulley and a first transmission belt. The two pillars at the conveying starting position are connected by a mounting plate. A dual-axis motor is mounted on the mounting plate. A second pulley is mounted on each of the two output shafts of the dual-axis motor. The second pulleys are connected to the first pulleys at the starting position by a drive belt.

[0007] When radiator fins need to be conveyed, the dual-shaft motor is started. The two output shafts of the dual-shaft motor are driven by the first pulley, the second pulley, and the drive belt. Every two adjacent first drive columns rotate synchronously through the transmission action of the two first pulleys and the first drive belt. The first drive columns drive the rotating columns to rotate. During the rotation of the rotating columns, the radiator fins placed on the rotating columns can be conveyed along the conveying direction. By adopting the synchronous conveying method at both ends, while ensuring conveying efficiency, a large amount of space can be left in the middle, allowing for partial processing of the radiator fins during the conveying process, improving production efficiency, saving production space, and also allowing the spacing between the two rows of support columns to be adjusted during installation to adapt to different production needs according to the different sizes of the conveyed radiator fins, thus enhancing the compatibility of the equipment.

[0008] As a preferred technical solution, both slide blocks are provided with horizontal sliding grooves on the side near the dual-axis motor. A slide plate is slidably installed in the horizontal sliding groove. A stop block is installed on the side of the slide plate near the dual-axis motor. The end of the stop block is arc-shaped. A pin is detachably installed on the slide plate. Before conveying, the pin is pulled out, and the spacing between the stop blocks is adjusted according to the size of the radiator fins. When the radiator fins enter the conveying device from the starting position of the conveying, it can ensure that the radiator fins are located in the middle position of the conveying device, preventing one-sided drive conveying, damaging the fins, and ensuring conveying efficiency.

[0009] As a preferred technical solution, the slide is equipped with several compression springs, and a disc is installed at the lower end of each compression spring. A ball bearing is rotatably installed at the lower end of the disc. During the conveying process, the compression springs are in a contracted state. Through the disc and the ball bearing, downward pressure can be generated on the fins during the conveying process, ensuring full contact between the rotating column and the radiator fins, ensuring conveying efficiency, preventing the phenomenon that the radiator fins are too light and the rotating column cannot drive the fins to move, and ensuring the normal operation of the conveying device.

[0010] As a preferred technical solution, the slide is provided with a cleaning component, which is powered by the rotation of the first transmission column. The cleaning effect is enhanced by the relative movement between the fins and the cleaning component during the conveying process.

[0011] The cleaning assembly includes a mounting bracket, a connecting column, a third pulley, a second transmission belt, a fourth pulley, a second transmission column, a connecting plate, a sliding column, a vertical slide groove, a baffle, a scraping brush, a driven plate, a first electric telescopic rod, a distance sensor, a second scraping brush, a connecting block, a second electric telescopic rod, and a collecting brush.

[0012] A mounting bracket is installed on the slide block. Second transmission columns are rotatably mounted on both ends of the mounting bracket. A connecting column is installed on the first transmission column closest to the mounting bracket. A third pulley is installed on the connecting column. A fourth pulley is installed on the second transmission column. The third pulley and the fourth pulley are connected by a second transmission belt. A connecting plate is eccentrically mounted on the end of the second transmission column. A sliding column is slidably mounted on the lower end of the connecting plate. A vertical sliding groove is opened on the upper part of the sliding column. A baffle is installed on the lower end of the connecting plate. The baffle is embedded in the sliding column. A first scraping brush is installed on the lower end of the sliding column. The two sliding columns are connected by a driven plate. A first electric telescopic rod is installed below the driven plate. A second scraping brush is installed on the first electric telescopic rod.

[0013] As a preferred technical solution, during the radiator fin conveying process, the first drive column rotates, driving the connecting column to rotate synchronously. The connecting column, through the belt drive of the third pulley, the second drive belt, and the fourth pulley, drives the second drive column to rotate. When the second drive column rotates, it rotates eccentrically through the connecting plate. Since the lower end of the connecting plate is slidably mounted on the sliding column, the vertical displacement of the connecting plate does not cause the sliding column to move. When the connecting plate moves horizontally, it drives the scraping brush to reciprocate through the sliding column. When the sliding column moves, it drives the second scraping brush to move through the driven plate and the first electric telescopic rod. The first and second scraping brushes reciprocate to scrape the radiator fins, removing impurities attached to the fin surface, which facilitates subsequent processing.

[0014] As a preferred technical solution, a distance sensor is installed on the second scraping brush. The distance sensor is electrically connected to the first electric telescopic rod. When the equipment is running normally, the first electric telescopic rod is in an extended state. When the distance sensor detects that the protruding part of the fin is about to reach the second scraping brush, it sends an electrical signal to control the first electric telescopic rod to retract at a time, thereby driving the second scraping brush to move upward and preventing the second scraping brush from obstructing the normal conveying of the fin.

[0015] As a preferred technical solution, a connecting block is installed on the side of the mounting frame away from the dual-axis motor. A second electric telescopic rod is installed on the connecting block, and a collecting brush is installed at the lower end of the second electric telescopic rod. The second electric telescopic rod is electrically connected to the first electric telescopic rod. When the first electric telescopic rod retracts, an electrical signal is emitted to control the second electric telescopic rod to retract with a delayed time, preventing the collecting brush from obstructing the normal transport of the fins. Since both the first and second scraping brushes perform reciprocating motion, some impurities may remain on the fins and cannot be removed. The collecting brush can block and collect the scraped impurities, allowing them to fall from the end of the fins.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The radiator fins are conveyed by rotating columns on two parallel slides, which reduces the workload of workers and improves production efficiency.

[0018] 2. By adopting a synchronous conveying method at both ends, a large amount of space can be left in the middle while ensuring conveying efficiency. This allows for partial processing of the radiator fins during the conveying process, improving production efficiency and saving production space. Furthermore, the spacing between the two rows of support columns can be adjusted during installation to adapt to different radiator fin sizes, enhancing the equipment's compatibility.

[0019] 3. By setting up a cleaning component, the radiator fins are scraped back and forth to remove impurities attached to the fin surface, which facilitates subsequent processing. Attached Figure Description

[0020] Figure 1 is a first-view structural schematic diagram of the present invention;

[0021] Figure 2 is a schematic diagram of the second structure of this utility model;

[0022] Figure 3 is a schematic diagram of the third structure of this utility model;

[0023] Figure 4 is a cross-sectional structural diagram of this utility model;

[0024] Figure 5 is an enlarged structural schematic diagram of point A in Figure 1 of this utility model;

[0025] Figure 6 is an enlarged structural schematic diagram of point B in Figure 1 of this utility model.

[0026] In the diagram: 1. Support column; 2. Slide block; 3. Through hole; 4. First transmission column; 5. Rotating column; 6. First pulley; 7. First transmission belt; 8. Mounting plate; 9. Dual-axis motor; 10. Second pulley; 11. Drive belt; 12. Horizontal slide; 13. Slide plate; 14. Stop block; 15. Pin; 16. Compression spring; 17. Disc; 18. Ball bearing; 19. Cleaning assembly;

[0027] 19. Cleaning assembly; 1901. Mounting bracket; 1902. Connecting column; 1903. Third pulley; 1904. Second drive belt; 1905. Fourth pulley; 1906. Second drive column; 1907. Connecting plate; 1908. Sliding column; 1909. Vertical slide groove; 1910. Baffle; 1911. First scraping brush; 1912. Driven plate; 1913. First electric telescopic rod; 1914. Distance sensor; 1915. Second scraping brush; 1916. Connecting block; 1917. Second electric telescopic rod; 1918. Collecting brush. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: As shown in Figures 1-6, this utility model provides a technical solution for a radiator fin conveying device, characterized in that: the radiator fin conveying device includes several support columns 1, which are arranged in two parallel rows. Each row of support columns 1 is connected by a slide block 2. Several through holes 3 are provided on each of the two slide blocks 2. A first transmission column 4 is rotatably installed on the several through holes 3. Two first pulleys 6 are installed on the first transmission column 4. A rotating column 5 is installed on the side of the first transmission column 4 away from the first pulleys 6. Every two adjacent first transmission columns 4 are connected by the first pulleys 6 and a first transmission belt 7. The two support columns 1 at the conveying starting position are connected by a mounting plate 8. A dual-axis motor 9 is installed on the mounting plate 8. A second pulley 10 is installed on each of the two output shafts of the dual-axis motor 9. The second pulleys 10 are connected to the first pulleys 6 at the starting position by a drive belt 11.

[0030] When radiator fins need to be conveyed, the dual-axis motor 9 is started. The two output shafts of the dual-axis motor 9 are driven by the first pulley 6, the second pulley 10 and the drive belt 11. Every two adjacent first transmission columns 4 rotate synchronously through the transmission action of the two first pulleys 6 and the first transmission belt 7. The first transmission column 4 drives the rotating column 5 to rotate. During the rotation of the rotating column 5, the radiator fins placed on the rotating column 5 can be conveyed along the conveying direction, reducing the workload of workers and improving production efficiency. The synchronous conveying method at both ends ensures the conveying efficiency while leaving a large space in the middle. Partial processing of the radiator fins can be performed during the conveying process, improving production efficiency and saving production space. In addition, the spacing between the two rows of support columns 1 can be adjusted during installation to adapt to different radiator fin sizes, enhancing the compatibility of the equipment.

[0031] Both slide blocks 2 have horizontal slide grooves 12 on the side near the dual-axis motor 9. A slide plate 13 is slidably installed in the horizontal slide groove 12. A stop block 14 is installed on the side of the slide plate 13 near the dual-axis motor 9. The end of the stop block 14 is arc-shaped. A pin 15 is detachably installed on the slide plate 13. Before conveying, the pin 15 is pulled out, and the spacing between the stop blocks 14 is adjusted according to the size of the radiator fins. When the radiator fins enter the conveying device from the starting position of the conveying, it can ensure that the radiator fins are in the middle position of the conveying device, prevent one-sided drive conveying, damage to the fins, and ensure conveying efficiency.

[0032] Several compression springs 16 are installed on the slide block 2. A disc 17 is installed at the lower end of the compression spring 16. A ball bearing 18 is rotatably installed at the lower end of the disc 17. During the conveying process, the compression springs 16 are in a contracted state. Through the disc 17 and the ball bearing 18, downward pressure can be generated on the fins during the conveying process, ensuring full contact between the rotating column 5 and the radiator fins, ensuring conveying efficiency, preventing the phenomenon that the radiator fins are too light and the rotating column 5 cannot drive the fins to move, and ensuring the normal operation of the conveying device.

[0033] As shown in Figures 1-4, a cleaning component 19 is provided on the slide 2. The first transmission column 4 is used to provide power to the cleaning component 19. The cleaning effect is enhanced by the relative movement between the fins and the cleaning component 19 during the conveying process.

[0034] The cleaning assembly 19 includes a mounting bracket 1901, a connecting column 1902, a third pulley 1903, a second transmission belt 1904, a fourth pulley 1905, a second transmission column 1906, a connecting plate 1907, a sliding column 1908, a vertical slide groove 1909, a baffle 1910, a first scraping brush 1911, a driven plate 1912, a first electric telescopic rod 1913, a distance sensor 1914, a second scraping brush 1915, a connecting block 1916, a second electric telescopic rod 1917, and a collecting brush 1918.

[0035] A mounting bracket 1901 is mounted on the slide block 2. Second transmission columns 1906 are rotatably mounted at both ends of the mounting bracket 1901. A connecting column 1902 is mounted on the first transmission column 4 closest to the mounting bracket 1901. A third pulley 1903 is mounted on the connecting column 1902. A fourth pulley 1905 is mounted on the second transmission column 1906. The third pulley 1903 and the fourth pulley 1905 are connected by a second transmission belt 1904. A connecting plate 1907 is eccentrically mounted at the end of the second transmission column 1906. A sliding column 1908 is slidably installed at the lower end of the connecting plate 1907. A vertical sliding groove 1909 is opened on the upper part of the sliding column 1908. A baffle 1910 is installed at the lower end of the connecting plate 1907. The baffle 1910 is embedded in the sliding column 1908. A first scraping brush 1911 is installed at the lower end of the sliding column 1908. The two sliding columns 1908 are connected by a driven plate 1912. A first electric telescopic rod 1913 is installed below the driven plate 1912. A second scraping brush 1915 is installed on the first electric telescopic rod 1913.

[0036] During the radiator fin conveying process, the first drive column 4 rotates, driving the connecting column 1902 to rotate synchronously. The connecting column 1902, through the belt drive of the third pulley 1903, the second drive belt 1904, and the fourth pulley 1905, drives the second drive column 1906 to rotate. When the second drive column 1906 rotates, it rotates eccentrically through the connecting plate 1907. Since the lower end of the connecting plate 1907 is slidably mounted on the sliding column 1908, the connecting plate 1907 rotates eccentrically in the vertical direction. The displacement of the connecting plate 1907 does not cause the sliding column 1908 to move. When the connecting plate 1907 moves horizontally, it will drive the first scraping brush 1911 to move back and forth through the sliding column 1908. When the sliding column 1908 moves, it will drive the second scraping brush 1915 to move through the driven plate 1912 and the first electric telescopic rod 1913. The first scraping brush 1911 and the second scraping brush 1915 scrape the radiator fins back and forth to remove impurities attached to the surface of the fins, which will facilitate subsequent processing.

[0037] A distance sensor 1914 is installed on the second scraping brush 1915. The distance sensor 1914 is electrically connected to the first electric telescopic rod 1913. When the equipment is running normally, the first electric telescopic rod 1913 is in an extended state. When the distance sensor 1914 detects that the protruding part of the fin is about to reach the second scraping brush 1915, it sends an electrical signal to control the first electric telescopic rod 1913 to retract at a time, thereby driving the second scraping brush 1915 to move upward and preventing the second scraping brush 1915 from obstructing the normal conveying of the fin.

[0038] A connecting block 1916 is installed on the side of the mounting bracket 1901 away from the dual-axis motor 9. A second electric telescopic rod 1917 is installed on the connecting block 1916. A collecting brush 1918 is installed at the lower end of the second electric telescopic rod 1917. The second electric telescopic rod 1917 is electrically connected to the first electric telescopic rod 1913. When the first electric telescopic rod 1913 retracts, it sends an electrical signal to control the second electric telescopic rod 1917 to retract at a delayed time to prevent the collecting brush 1918 from obstructing the normal transport of the fins. Since both the first scraping brush 1911 and the second scraping brush 1915 perform reciprocating motion, some impurities may remain on the fins and cannot be removed. The collecting brush 1918 can block and collect the scraped impurities, allowing them to fall off from the end of the fins.

[0039] The working principle of this utility model:

[0040] When radiator fins need to be conveyed, the dual-axis motor 9 is started. The two output shafts of the dual-axis motor 9 are driven by the first pulley 6, the second pulley 10 and the drive belt 11. Every two adjacent first transmission columns 4 rotate synchronously through the transmission action of the two first pulleys 6 and the first transmission belt 7. The first transmission column 4 drives the rotating column 5 to rotate. During the rotation of the rotating column 5, the radiator fins placed on the rotating column 5 can be conveyed along the conveying direction, reducing the workload of workers and improving production efficiency. The synchronous conveying method at both ends ensures the conveying efficiency while leaving a large space in the middle. Partial processing of the radiator fins can be performed during the conveying process, improving production efficiency and saving production space. In addition, the spacing between the two rows of support columns 1 can be adjusted during installation to adapt to different radiator fin sizes, enhancing the compatibility of the equipment.

[0041] During the conveying process, the compression spring 16 is in a contracted state. Through the disc 17 and the ball bearings 18, it can exert downward pressure on the fins during the conveying process, ensuring full contact between the rotating column 5 and the radiator fins, ensuring conveying efficiency, preventing the phenomenon that the radiator fins are too light and the rotating column 5 cannot drive the fins to move, and ensuring the normal operation of the conveying device.

[0042] During the radiator fin conveying process, the first drive column 4 rotates, driving the connecting column 1902 to rotate synchronously. The connecting column 1902, through the belt drive of the third pulley 1903, the second drive belt 1904, and the fourth pulley 1905, drives the second drive column 1906 to rotate. When the second drive column 1906 rotates, it rotates eccentrically through the connecting plate 1907. Since the lower end of the connecting plate 1907 is slidably mounted on the sliding column 1908, the connecting plate 1907 rotates eccentrically in the vertical direction. The displacement of the connecting plate 1907 does not cause the sliding column 1908 to move. When the connecting plate 1907 moves horizontally, it will drive the first scraping brush 1911 to move back and forth through the sliding column 1908. When the sliding column 1908 moves, it will drive the second scraping brush 1915 to move through the driven plate 1912 and the first electric telescopic rod 1913. The first scraping brush 1911 and the second scraping brush 1915 scrape the radiator fins back and forth to remove impurities attached to the surface of the fins, which will facilitate subsequent processing.

[0043] When the equipment is running normally, the first electric telescopic rod 1913 is in the extended state. When the distance sensor 1914 detects that the protruding part of the fin is about to reach the second scraping brush 1915, it sends an electrical signal to control the first electric telescopic rod 1913 to retract at a time, which drives the second scraping brush 1915 to move upward, preventing the second scraping brush 1915 from obstructing the normal conveying of the fin.

[0044] When the first electric telescopic rod 1913 retracts, it sends an electrical signal to control the second electric telescopic rod 1917 to retract at a delayed time to prevent the collecting brush 1918 from obstructing the normal transport of the fins. Since both the first scraping brush 1911 and the second scraping brush 1915 are in reciprocating motion, some impurities may remain on the fins and cannot be removed. The collecting brush 1918 can block and collect the scraped impurities, allowing them to fall off from the end of the fins.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A radiator fin conveying device, characterized in that: The radiator fin conveying device includes several support columns (1), which are arranged in two parallel rows. Each row of support columns (1) is connected by a slide block (2). Several through holes (3) are provided on each of the two slide blocks (2). A first transmission column (4) is rotatably installed on each of the several through holes (3). Two first pulleys (6) are installed on the first transmission column (4). A rotating column (5) is installed on the side of the first transmission column (4) away from the first pulleys (6). Every two adjacent first transmission columns (4) are connected by the first pulleys (6) and the first transmission belt (7). The two support columns (1) at the starting position are connected by a mounting plate (8). A dual-axis motor (9) is installed on the mounting plate (8). A second pulley (10) is installed on each of the two output shafts of the dual-axis motor (9). The second pulley (10) is connected to the first pulley (6) at the starting position by a drive belt (11).

2. The radiator fin conveying device according to claim 1, characterized in that: Both slide blocks (2) are provided with horizontal slide grooves (12) on the side near the dual-axis motor (9). A slide plate (13) is slidably installed in the horizontal slide groove (12). A stop block (14) is installed on the side of the slide plate (13) near the dual-axis motor (9). The end of the stop block (14) is arc-shaped. A pin (15) is detachably installed on the slide plate (13).

3. The radiator fin conveying device according to claim 2, characterized in that: A number of compression springs (16) are installed on the slide (2). A disc (17) is installed at the lower end of the compression spring (16). A ball bearing (18) is rotatably installed at the lower end of the disc (17).

4. A radiator fin conveying device according to claim 3, characterized in that: The slide (2) is provided with a cleaning component (19), which is powered by the rotation of the first transmission column (4). The cleaning effect is enhanced by the relative movement of the fins and the cleaning component (19) during the conveying process.

5. A radiator fin conveying device according to claim 4, characterized in that: The cleaning assembly (19) includes a mounting bracket (1901), a connecting column (1902), a third pulley (1903), a second transmission belt (1904), a fourth pulley (1905), a second transmission column (1906), a connecting plate (1907), a sliding column (1908), a vertical slide groove (1909), a baffle (1910), a first scraping brush (1911), a driven plate (1912), a first electric telescopic rod (1913), and a distance sensor ( 1914), second scraping brush (1915), connecting block (1916), second electric telescopic rod (1917), and collecting brush (1918); a mounting bracket (1901) is installed on the slide (2), and a second transmission column (1906) is rotatably installed at both ends of the mounting bracket (1901). A connecting column (1902) is installed on the first transmission column (4) closest to the mounting bracket (1901), and a third pulley (1902) is installed on the connecting column (1902). 1903), a fourth pulley (1905) is installed on the second transmission column (1906), the third pulley (1903) and the fourth pulley (1905) are connected by a second transmission belt (1904), a connecting plate (1907) is eccentrically installed at the end of the second transmission column (1906), a sliding column (1908) is slidably installed at the lower end of the connecting plate (1907), and a vertical sliding groove (1909) is opened on the upper part of the sliding column (1908). A baffle (1910) is installed at the lower end of the connecting plate (1907). The baffle (1910) is embedded in the sliding column (1908). A first scraping brush (1911) is installed at the lower end of the sliding column (1908). The two sliding columns (1908) are connected by a driven plate (1912). A first electric telescopic rod (1913) is installed below the driven plate (1912). A second scraping brush (1915) is installed on the first electric telescopic rod (1913).

6. A radiator fin conveying device according to claim 5, characterized in that: The second scraping brush (1915) is equipped with a distance sensor (1914), which is electrically connected to the first electric telescopic rod (1913).

7. A radiator fin conveying device according to claim 6, characterized in that: A connecting block (1916) is installed on the side of the mounting bracket (1901) away from the dual-axis motor (9). A second electric telescopic rod (1917) is installed on the connecting block (1916). A collecting brush (1918) is installed at the lower end of the second electric telescopic rod (1917). The second electric telescopic rod (1917) is electrically connected to the first electric telescopic rod (1913).

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