Flexible lithium battery cell processing and packaging equipment

Abstract

The invention discloses flexible lithium battery cell processing and packaging equipment, and relates to the field of cell processing, the flexible lithium battery cell processing and packaging equipment comprises a machine body, a mounting rack, a fixing plate and a packaging groove, the mounting rack is fixed above the machine body, the fixing plate is fixed on the inner side of the mounting rack, the packaging groove is formed in the middle of the fixing plate, the packaging groove is designed to be of a vertically through structure, and the packaging groove is provided with a plurality of packaging holes. A packaging groove is formed in the fixing plate, a pressure packaging mechanism is arranged above the packaging groove, bearing seats used for placing products are arranged below the packaging groove, a movable disc is arranged below the fixing plate, and the bearing seats are distributed on the outer side of the movable disc with the center of the movable disc as the circle center at equal angles. According to the flexible lithium battery cell processing and packaging equipment, the bearing seats can be driven to move through rotation of the movable disc, so that packaged cells are switched, the packaged cells move below the packaging groove, the subsequent overall packaging efficiency is improved, the cells can be placed on other bearing seats in advance, and operation is safer.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell processing, and in particular to a flexible lithium battery cell processing and packaging device. Background Art

[0002] When processing flexible lithium battery cells, the cells need to be protected by packaging after assembly to form a complete whole. Current packaging equipment can package the cells by pressurizing them.

[0003] Prior art 1 (publication number CN215377578U, a Chinese patent published on December 31, 2021) A flexible lithium battery production cell packaging device, including a packaging box and a packaging cover, a group of symmetrical opening and closing mechanisms are respectively provided on the side walls of the packaging box, the opening and closing mechanisms include a fixed column, a compression spring, a fixed rod and a movable rod, and fixing mechanisms are respectively provided on the front and rear end walls of the packaging box, the fixing mechanisms include connecting columns, threaded rods and card blocks, and an inner box is provided inside the packaging box. The utility model discloses a flexible lithium battery production cell packaging device, which belongs to the field of packaging equipment. The inner box is provided for storing the battery cells. The opening and closing mechanism and the fixing mechanism are used in coordination to facilitate the opening and closing of the packaging box and the packaging cover, and to facilitate the packaging of the battery cells and improve the work efficiency. The overall operation is simple and quick. After the packaging box and the packaging cover are closed, the packaging box can be sealed to prevent the battery cells from getting damp or contaminated with dust, thereby avoiding the battery cells from being affected. Prior art 2 (publication number CN218632167U, a Chinese patent published on March 14, 2023) A flexible lithium battery production cell packaging device, comprising a base plate, a packaging unit and adjustment unit; an arched plate is installed at the upper end of the bottom plate; the packaging unit comprises a horizontal plate, a square tube, a hydraulic cylinder, a base, an I-shaped block and a cotton plate, the left and right ends of the horizontal plate are respectively slidably connected to the left and right ends inside the arched plate, the upper end of the horizontal plate is installed with a square tube, the hydraulic cylinder is installed in the middle of the upper end of the arched plate, the telescopic end of the hydraulic cylinder is connected to the middle of the upper end of the square tube, the upper end of the bottom plate is installed with a base, the middle of the horizontal plate is provided with a square groove, the square groove and the inside of the base are all surrounded by racks, the flexible lithium battery production cell packaging equipment adopts a hydraulic method to package the flexible lithium battery cell, the serrated edge pressing has a better packaging effect, and the cell can be made flatter and more applicable during packaging.

[0004] When packaging battery cells, current packaging equipment needs to first place the battery cells until they are packaged, then operate the equipment to package them, take out the battery cells after packaging is completed, and then put new battery cells back in to continue the packaging operation. The operation is relatively cumbersome, the continuous packaging process efficiency is low, and the convenience of using the equipment is reduced. Summary of the invention

[0005] The purpose of the present invention is to provide a flexible lithium battery cell processing and packaging equipment to solve the problem that the current packaging equipment proposed in the above background technology needs to place the battery cell until packaging, then operate the equipment to package, take out the battery cell after packaging, and then put new battery cell back to continue packaging operation, which is a cumbersome operation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flexible lithium battery cell processing and packaging equipment, comprising a body, a mounting frame, a fixing plate and a packaging groove, wherein the mounting frame is fixed on the top of the body, and the fixing plate is fixed on the inner side of the mounting frame, and the middle of the fixing plate is provided with a packaging groove, the packaging groove is designed as a vertical through-type structure, and a pressure packaging mechanism is arranged above the packaging groove, and a supporting seat for placing products is arranged below the packaging groove, and a movable plate is arranged below the fixing plate, and the supporting seats are distributed at equal angles on the outside of the movable plate with the center of the movable plate as the center of the circle, and the movable plate is provided at the bottom of the fixing plate. A support column passes through the middle of the movable disk, and the support column is fixedly connected to the machine body, a connecting frame is provided on the outer side of the supporting seat, and a movable shaft is rotatably installed on the inner side of the connecting frame, the movable shaft is connected to the supporting seat, and a counterweight correction block is fixed at the middle and lower part of the supporting seat to provide a downward pulling force for the supporting seat, a driving plate is fixed on the inner side of the connecting frame, and the driving plate is located inside the movable disk and forms a sliding connection between the movable disk, and a moving control mechanism is provided on the outer side of the driving plate to control the driving plate to drive the supporting seat to move, and a rotating driving mechanism is provided on the outer side of the movable disk to control the rotation of the movable disk.

[0007] To further optimize the technical solution, the pressure packaging mechanism includes a packaging block and a hydraulic device; A packaging block is arranged above the packaging groove; The hydraulic press is arranged above the packaging block, and the hydraulic press is connected to the mounting frame.

[0008] To further optimize the technical solution, a product positioning mechanism is provided inside the packaging groove to center the product.

[0009] To further optimize the technical solution, the product positioning mechanism includes a positioning block, a movable block, a first spring and an automatic trigger mechanism; Positioning blocks are distributed at equal angles inside the packaging slot; The movable block is fixed on the outer side of the positioning block, and a horizontal sliding structure is formed between the movable block and the fixed plate; A first spring, arranged at the outer end of the movable block, provides an outward pulling force for the movable block; The automatic trigger mechanism is arranged on the outer side of the positioning block to control the movement of the movable block.

[0010] To further optimize the technical solution, the automatic trigger mechanism includes a through slot, a first magnet and a second magnet; A through slot is provided inside the movable block; A first magnet is fixed inside the through slot; The second magnet is fixed on the supporting seat, and when the second magnet and the first magnet are facing each other, their like magnetic poles repel each other.

[0011] To further optimize the technical solution, the rotary drive mechanism includes a drive ring, a drive gear and a motor; A driving ring, fixed to the right side of the movable plate; A driving gear is arranged on the inner side of the driving ring and is meshed with the driving ring; The motor is connected to the driving gear to control the rotation of the driving gear.

[0012] To further optimize the technical solution, a positioning ring is fixed on the inner side of the movable disk, and a rotational connection is formed between the positioning ring and the support column, and balls are evenly distributed inside the positioning ring.

[0013] To further optimize the technical solution, the mobile control mechanism includes a second spring, a first gear, a first connecting shaft, a first control rope, a second connecting shaft, a second gear and a single control mechanism; A second spring is arranged on the outer side of the driving plate to provide a reset thrust for the driving plate; A first gear is arranged on the outer side of the driving plate and is meshed with the driving plate; A first connecting shaft, fixed at the middle of the first gear; A first control rope, wound around the surface of the first connecting shaft; A second connecting shaft is rotatably mounted inside the movable disk, and the second connecting shaft is connected to the first control rope; a second gear fixed to a surface of the second connecting shaft; The one-way control mechanism is arranged inside the support column to control the rotation of the second gear.

[0014] To further optimize the technical solution, the middle portion of the support column and the portion opposite to the second gear are designed to be concave in structure, thereby providing movement space for the second gear during rotation.

[0015] To further optimize the technical solution, the single-item control mechanism includes a third gear, a drive shaft, a second control rope and a telescopic controller; A third gear is disposed inside the support column, and the third gear is meshed with the second gear; A drive shaft is fixed to the middle of the third gear and is rotatably mounted inside the support column; A second control rope is wound around the surface of the drive shaft; The telescopic controller is arranged below the driving shaft, and the upper end of the telescopic controller is fixedly connected to the lower end of the second control rope.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The rotation of the movable disk can drive the support seat to move, thereby switching the packaged battery cells and moving them from under the packaging slot, thereby improving the subsequent overall packaging efficiency. The battery cells can also be placed on other support seats in advance, making the operation safer.

[0017] (2) The gravity of the counterweight correction block provides a downward pulling force for the support seat, so that it can remain horizontal when the movable plate rotates, thereby providing stable support for the battery cell and ensuring that the direction of the support seat is not affected by the rotation of the movable plate.

[0018] (3) The positioning block can provide a positioning effect for the battery cell in the packaging slot so that it can be placed in the center, and the movement of the positioning block can be controlled by the vertical movement of the supporting seat to achieve automatic positioning when the battery cell is moved into the packaging slot.

[0019] (4) The engagement between the first gear and the driving plate controls the driving plate to drive the connecting frame and the supporting seat to move, thereby sending the battery cell on the supporting seat into the packaging slot, and then the elastic force applied by the second spring to the driving plate controls the driving plate to reset.

[0020] (5) The lifting and lowering of the support plate is controlled by the meshing of the third gear and the second gear, and the third gear is set as a group to provide control only for a group of support seats located below the packaging groove. The support seat controlled by the third gear is adjusted by the rotation of the driving disk to realize subsequent packaging loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the machine body from top view of the present invention; Figure 3 It is a schematic diagram of the top view of the fixing plate of the present invention; Figure 4 This is a schematic diagram of the main cross-sectional structure of the fixing plate of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the supporting seat of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the movable disk of the present invention; Figure 7 It is a schematic diagram of the side section structure of the movable disk of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram at a in the middle; Fig. 9It is a schematic diagram of the main cross-sectional structure of the movable disk of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram at b in the middle; Fig.11 It is a schematic diagram of the main cross-sectional structure of the support column of the present invention.

[0022] In the figure: 1, machine body; 2, mounting frame; 3, fixing plate; 4, packaging groove; 5, packaging block; 6, hydraulic press; 7, supporting seat; 8, movable plate; 9, supporting column; 10, connecting frame; 11, movable shaft; 12, counterweight correction block; 13, driving plate; 14, positioning block; 15, movable block; 16, first spring; 17, through groove; 18, first magnet; 19, second magnet; 20, positioning ring; 21, driving ring; 22, driving gear; 23, motor; 24, second spring; 25, first gear; 26, first connecting shaft; 27, first control rope; 28, second connecting shaft; 29, second gear; 30, third gear; 31, driving shaft; 32, second control rope; 33, telescopic controller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 11 The present invention provides the following technical solutions: A flexible lithium battery cell processing and packaging device, comprising a body 1, a mounting frame 2, a fixing plate 3 and a packaging groove 4, wherein the mounting frame 2 is fixed on the upper side of the body 1, and the fixing plate 3 is fixed on the inner side of the mounting frame 2, and the packaging groove 4 is opened in the middle of the fixing plate 3; Embodiment 1: The present invention provides the following technical solution, which discloses that the packaging groove 4 is designed to be through-type from top to bottom, and a pressure packaging mechanism is arranged above the packaging groove 4, and a supporting seat 7 for placing products is arranged below the packaging groove 4, and a movable disk 8 is arranged below the fixed plate 3, and the supporting seat 7 is distributed at equal angles on the outside of the movable disk 8 with the center of the movable disk 8 as the center of the circle, and a supporting column 9 is passed through the middle of the movable disk 8, and the supporting column 9 is fixedly connected to the body 1, a connecting frame 10 is arranged on the outside of the supporting seat 7, and a movable shaft 11 is rotatably installed on the inner side of the connecting frame 10, and the movable shaft 11 is connected to the supporting seat 7, and the supporting A counterweight correction block 12 is fixed at the lower middle part of the support seat 7 to provide a downward pulling force for the support seat 7. A driving plate 13 is fixed on the inner side of the connecting frame 10, and the driving plate 13 is located inside the movable disk 8 and forms a sliding connection between the movable disk 8, and a moving control mechanism is arranged on the outer side of the driving plate 13 to control the driving plate 13 to drive the support seat 7 to move. A rotating driving mechanism is arranged on the outer side of the movable disk 8 to control the rotation of the movable disk 8. The pressure packaging mechanism includes a packaging block 5 and a hydraulic press 6. The packaging block 5 is arranged above the packaging groove 4, and the hydraulic press 6 is arranged above the packaging block 5, and the hydraulic press 6 is connected to the mounting frame 2.

[0025] Corresponding battery cell placement positions and battery cell removal mechanisms can be set on the front and rear sides of the body 1. When in use, the battery cells to be packaged are placed on the supporting seat 7 located on the front side of the movable disk 8, and then the movable disk 8 is rotated to drive the battery cells to the bottom of the packaging groove 4. At the same time, the supporting seat 7 is kept horizontal under the action of the counterweight correction block 12, and then the driving plate 13 is used to control the support seat 7 to move, and the battery cells are sent to the inside of the packaging groove 4. Then, the hydraulic press 6 controls the movement of the packaging block 5 to package it. At the same time, the battery cells can continue to be placed on the supporting seat 7 on the front side of the movable disk 8. After the packaging is completed, the supporting seat 7 is controlled to move downward, and then the movable disk 8 is continued to be rotated. The packaged battery cells move to the rear of the movable disk 8 and can be removed, and at the same time, the placement and packaging of new battery cells continue.

[0026] Embodiment 2: Based on Embodiment 1, a product positioning mechanism is disclosed in the packaging groove 4 to center the product. The product positioning mechanism includes a positioning block 14, a movable block 15, a first spring 16 and an automatic trigger mechanism. The positioning block 14 is distributed at equal angles inside the packaging groove 4. The movable block 15 is fixed to the outside of the positioning block 14, and a horizontal sliding structure is formed between the movable block 15 and the fixed plate 3. The first spring 16 is arranged at the outer end of the movable block 15 to provide an outward pulling force for the movable block 15. The automatic trigger mechanism is arranged on the outside of the positioning block 14 to control the movement of the movable block 15. The automatic trigger mechanism The driving mechanism includes a through slot 17, a first magnet 18 and a second magnet 19. The through slot 17 is opened inside the movable block 15. The first magnet 18 is fixed inside the through slot 17. The second magnet 19 is fixed above the supporting seat 7. When the second magnet 19 and the first magnet 18 are opposite to each other, their like magnetic poles repel each other. The rotating driving mechanism includes a driving ring 21, a driving gear 22 and a motor 23. The driving ring 21 is fixed on the right side of the movable disk 8. The driving gear 22 is arranged on the inner side of the driving ring 21 and is meshed with the driving ring 21. The motor 23 is connected to the driving gear 22 to control the rotation of the driving gear 22.

[0027] In the default state, the positioning block 14 does not position the battery cell under the action of the first spring 16. When the battery cell is sent into the packaging groove 4, the second magnet 19 will be inserted into the through groove 17 and opposite to the first magnet 18. The first magnet 18 is subjected to the repulsive force to drive the movable block 15 and the positioning block 14 to move, so that the positioning block 14 can center the battery cell to assist in subsequent packaging. The subsequent support seat 7 moves downward, the repulsive force on the first magnet 18 is released, and the positioning block 14 will reset outward. The rotation of the movable disk 8 can be controlled by the motor 23 to rotate the drive gear 22, so that the drive gear 22 and the drive ring 21 are engaged to control the rotation of the drive ring 21, thereby driving the movable disk 8 to rotate.

[0028] Embodiment 3: On the basis of embodiment 1, a positioning ring 20 is fixed on the inner side of the movable disk 8, and a rotational connection is formed between the positioning ring 20 and the support column 9, and balls are evenly distributed inside the positioning ring 20. The movement control mechanism includes a second spring 24, a first gear 25, a first connecting shaft 26, a first control rope 27, a second connecting shaft 28, a second gear 29 and a single-item control mechanism. The second spring 24 is arranged on the outer side of the driving plate 13 to provide a reset thrust for the driving plate 13. The first gear 25 is arranged on the outer side of the driving plate 13 and forms a meshing connection between the driving plate 13. The first connecting shaft 26 is fixed in the middle of the first gear 25. The first control rope 27 is wound around the surface of the first connecting shaft 26. The second connecting shaft 28 is rotatably installed inside the movable disk 8, and the second connecting shaft 28 is connected to the first control rope 27. Next, the second gear 29 is fixed on the surface of the second connecting shaft 28, and the one-way control mechanism is arranged inside the support column 9 to control the rotation of the second gear 29. The middle part of the support column 9 and the second gear 29 are opposite to each other and are designed in a concave structure to provide the second gear 29 with a moving space during rotation. The one-way control mechanism includes a third gear 30, a driving shaft 31, a second control rope 32 and a telescopic controller 33. The third gear 30 is arranged inside the support column 9, and the third gear 30 and the second gear 29 are meshedly connected. The driving shaft 31 is fixed in the middle part of the third gear 30, and the driving shaft 31 is rotatably installed inside the support column 9. The second control rope 32 is wound around the surface of the driving shaft 31. The telescopic controller 33 is arranged below the driving shaft 31, and the upper end of the telescopic controller 33 is fixedly connected to the lower end of the second control rope 32.

[0029] When it is necessary to control the movement of the supporting seat 7 below the packaging slot 4, the second control rope 32 can be pulled by the telescopic controller 33 to move, so that it drives the driving shaft 31 to rotate, and the driving shaft 31 drives the third gear 30 to rotate. The third gear 30 drives the second gear 29 to rotate through the engagement with the second gear 29. The second gear 29 reels the first control rope 27 through the second connecting shaft 28, drives the first connecting shaft 26 to rotate, and the first gear 25 drives the driving plate 13 to move, drives the connecting frame 10 and the supporting seat 7 to move, and delivers the battery cell into the interior of the packaging slot 4.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible lithium battery cell processing and packaging device, comprising a body (1), a mounting frame (2), a fixing plate (3) and a packaging groove (4), wherein the mounting frame (2) is fixed on the upper side of the body (1), the fixing plate (3) is fixed on the inner side of the mounting frame (2), and the packaging groove (4) is provided in the middle of the fixing plate (3); Features: The packaging groove (4) is designed as a vertically through-type structure, and a pressure packaging mechanism is arranged above the packaging groove (4), and a supporting seat (7) for placing products is arranged below the packaging groove (4), a movable disk (8) is arranged below the fixed plate (3), and the supporting seats (7) are distributed at equal angles on the outside of the movable disk (8) with the center of the movable disk (8) as the center of the circle, and a supporting column (9) passes through the middle of the movable disk (8), and the supporting column (9) is fixedly connected to the body (1), and a connecting frame (10) is arranged on the outside of the supporting seat (7), and a supporting frame (10) is rotatably installed on the inside of the connecting frame (10). A movable shaft (11) is connected to a supporting seat (7), and a counterweight correction block (12) is fixed at the middle and lower part of the supporting seat (7) to provide a downward pulling force for the supporting seat (7). A driving plate (13) is fixed on the inner side of the connecting frame (10), and the driving plate (13) is located inside the movable disk (8) and forms a sliding connection between the movable disk (8). A movement control mechanism is arranged on the outer side of the driving plate (13) to control the driving plate (13) to drive the supporting seat (7) to move. A rotation drive mechanism is arranged on the outer side of the movable disk (8) to control the rotation of the movable disk (8).

2. The flexible lithium battery cell processing and packaging equipment according to claim 1, characterized in that: The pressure packaging mechanism comprises a packaging block (5) and a hydraulic device (6); A packaging block (5) is arranged above the packaging groove (4); The hydraulic press (6) is arranged above the packaging block (5), and the hydraulic press (6) is connected to the mounting frame (2).

3. The flexible lithium battery cell processing and packaging equipment according to claim 1, characterized in that: A product positioning mechanism is provided inside the packaging groove (4) to center the product.

4. The flexible lithium battery cell processing and packaging equipment according to claim 3 is characterized in that: The product positioning mechanism comprises a positioning block (14), a movable block (15), a first spring (16) and an automatic triggering mechanism; Positioning blocks (14) are distributed at equal angles inside the packaging groove (4); A movable block (15) is fixed on the outer side of the positioning block (14), and a horizontal sliding structure is formed between the movable block (15) and the fixed plate (3); A first spring (16) is arranged at the outer end of the movable block (15) to provide an outward pulling force for the movable block (15); An automatic trigger mechanism is arranged outside the positioning block (14) to control the movement of the movable block (15).

5. The flexible lithium battery cell processing and packaging equipment according to claim 4, characterized in that: The automatic trigger mechanism comprises a through slot (17), a first magnet (18) and a second magnet (19); A through groove (17) is provided inside the movable block (15); A first magnet (18) fixed inside the through slot (17); The second magnet (19) is fixed above the supporting seat (7), and when the second magnet (19) and the first magnet (18) are facing each other, their like magnetic poles repel each other.

6. The flexible lithium battery cell processing and packaging equipment according to claim 1, characterized in that: The rotary drive mechanism comprises a drive ring (21), a drive gear (22) and a motor (23); A drive ring (21) is fixed to the right side of the movable disk (8); A driving gear (22) is arranged on the inner side of the driving ring (21) and is meshedly connected with the driving ring (21); The motor (23) is connected to the driving gear (22) to control the rotation of the driving gear (22).

7. A flexible lithium battery cell processing and packaging equipment according to claim 1 or 6, characterized in that: A positioning ring (20) is fixed on the inner side of the movable disk (8), and a rotational connection is formed between the positioning ring (20) and the support column (9), and balls are evenly distributed inside the positioning ring (20).

8. The flexible lithium battery cell processing and packaging equipment according to claim 1, characterized in that: The movement control mechanism comprises a second spring (24), a first gear (25), a first connecting shaft (26), a first control rope (27), a second connecting shaft (28), a second gear (29) and a single-item control mechanism; A second spring (24) is arranged on the outer side of the driving plate (13) to provide a reset thrust for the driving plate (13); A first gear (25) is arranged on the outer side of the driving plate (13) and is meshedly connected with the driving plate (13); A first connecting shaft (26) fixed to the middle of the first gear (25); A first control rope (27) wound around the surface of the first connecting shaft (26); A second connecting shaft (28) is rotatably mounted inside the movable plate (8), and the second connecting shaft (28) is connected to the first control rope (27); A second gear (29) fixed on a surface of the second connecting shaft (28); A single-mode control mechanism is arranged inside the support column (9) to control the rotation of the second gear (29).

9. The flexible lithium battery cell processing and packaging equipment according to claim 8, characterized in that: The middle part of the support column (9) and the part opposite to the second gear (29) are designed to be concave in shape, so as to provide a moving space for the second gear (29) when rotating.

10. A flexible lithium battery cell processing and packaging device according to claim 8 or 9, characterized in that: The single-item control mechanism comprises a third gear (30), a drive shaft (31), a second control rope (32) and a telescopic controller (33); A third gear (30) is arranged inside the support column (9), and the third gear (30) and the second gear (29) are meshedly connected; A drive shaft (31) is fixed to the middle of the third gear (30), and the drive shaft (31) is rotatably mounted inside the support column (9); A second control rope (32) is wound around the surface of the driving shaft (31); The telescopic controller (33) is arranged below the driving shaft (31), and the upper end of the telescopic controller (33) is fixedly connected to the lower end of the second control rope (32).

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