A granulator for producing high-efficiency and energy-saving PA66 nylon materials

Abstract

The present invention discloses a granulator for producing PA66 nylon materials with high efficiency and energy saving, which relates to the field of nylon material production, and includes a granulator body, an external heat storage cavity and a heat transfer pipe component. The external heat storage cavity is fixedly installed on the outer side of the granulator body, and a heat transfer pipe component is penetrated and docked at the upper end of the external heat storage cavity, and the heat transfer pipe component is docked with the outer side of the granulator body. The granulator for producing PA66 nylon materials with high efficiency and energy saving is provided with an adaptive moving structure, which conducts the heat formed inside the granulator body through the adaptive moving structure. The heat stored inside is stably released to the outside of the forming and discharging channel through the supply docking pipe component, so as to perform heat constant temperature treatment on the outside of the discharged material, avoiding phenomena such as fracture when it directly contacts cold air, and effectively conducting and recycling the large amount of heat generated during the operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of nylon material production, and specifically relates to a granulator for producing PA66 nylon materials with high efficiency and energy saving. Background Art

[0002] As a relatively common industrial material, PA66 nylon materials need to go through multiple steps during the processing and production process, including granulation treatment in the forming link.

[0003] For example, a granulator for producing nylon materials with the publication number CN209599627U includes a storage bin. One outer wall of the storage bin is provided with a feed pipe. The bottom end of the side wall of the storage bin is movably connected with a metal cover through a bearing. The middle position of the top outer wall of the storage bin is fixed with a motor through bolts. The output shaft of the motor passes through the top outer wall of the storage bin and is fixed with a screw rod through bolts. A through hole is opened at the middle position of the bottom inner wall of the storage bin, and the bottom end of the screw rod passes through the through hole and is fixed with the middle position of the bottom inner wall of the metal cover through bolts. The bottom end of the storage bin is provided with discharge holes distributed in a radial pattern at equal intervals, and the discharge holes penetrate the bottom outer wall of the metal cover.

[0004] Another example is the granulator for nylon material production with the publication number CN113547661B, which relates to the technical field of granulators. The granulator includes a cutting device for cutting and granulating nylon belts. The cutting device is composed of a housing, a feed plate, a discharge plate, a driving roller rotatably arranged inside the housing, a driven roller cooperating with the driving roller, and a driving device for driving the driving roller and the driven roller. A sponge pad is filled in the limiting groove on the outer wall of the driving roller. Since the driven roller has the same structure as the driving roller, the nylon belt can be better clamped to avoid the nylon belt from falling, and at the same time, the surface of the nylon belt can be better dried.

[0005] For example, the granulator for producing nylon materials with the publication number CN220719950U specifically relates to the technical field of nylon processing, including a granulator base, the lower end of which is provided with moving wheels. The middle part of the upper end of the granulator base is provided with a granulation working box. The side end of the granulation working box is provided with a concave limiting groove and a second motor. The inner end face of the granulation working box is provided with a discharge guide plate, and ventilation holes are opened on the end face of the discharge guide plate. During actual use, the cutting roller shaft, transmission roller shaft, cutting support block, cutting limiting rod, and limiting pressure wheel can effectively facilitate the cutting treatment of the extruded nylon materials.

[0006] Most of the above-mentioned prior arts improve their overall structures. During the operation of the existing granulator for producing PA66 nylon materials, most of the large amount of heat generated during the operation of the equipment is directly dissipated, and the heat conduction and recycling work cannot be effectively carried out. As a result, there is a certain state of heat energy waste, and thus there are certain limitations in use. Summary of the Invention

[0007] The purpose of the present invention is to provide an energy-efficient granulator for producing PA66 nylon materials, so as to solve the problem that most of the large amount of heat generated during the operation of the equipment in the above-mentioned background technology is directly dissipated, and the heat conduction and recycling work cannot be effectively carried out, resulting in a certain state of heat energy waste, and thus there are certain limitations in use.

[0008] To achieve the above purpose, the present invention provides the following technical solution: An energy-efficient granulator for producing PA66 nylon materials, including a granulator body, an external heat storage cavity, and a heat transfer pipe component. The external heat storage cavity is fixedly installed on the outside of the granulator body, and the upper end of the external heat storage cavity is penetrated and docked with the heat transfer pipe component, and the heat transfer pipe component is docked with the outside of the granulator body;

[0009] A forming discharge channel is arranged at the lower end of the granulator body. The lower end of the external heat storage cavity is penetrated and docked with a supply docking pipe component, and the lower end of the supply docking pipe component corresponds to the outside of the forming discharge channel. A docking movable disk is rotatably connected to the outside of the granulator body. An adaptive movable structure is arranged between the docking movable disk and the granulator body to recover and conduct the heat formed inside the granulator body through the adaptive movable structure; A nested movable guide is nested and installed at the lower end of the outside of the granulator body, and the lower end of the nested movable guide corresponds to the inside of the forming discharge channel, and an auxiliary guiding structure is arranged between the nested movable guide and the inside of the forming discharge channel to adaptively adjust the connection state inside the forming discharge channel through the auxiliary guiding structure.

[0010] Further, the adaptive movable structure is provided with a guiding movable rod, the upper end of the guiding movable rod is docked on the outside of the docking movable disk, the lower end of the guiding movable rod is docked with a vertical positioning movable part, and the vertical positioning movable part is nested and docked with the outside of the granulator body.

[0011] Furthermore, a fitting and docking piston member is fitted and docked on the inner side of the external heat storage cavity, and a first spring is fixedly connected to the upper end of the fitting and docking piston member, and the upper end of the first spring and the inner side of the external heat storage cavity are mutually docked, and a first docking steel wire rope is fixedly connected to the lower end of the fitting and docking piston member, and the first docking steel wire rope passes through along the inner side of the external heat storage cavity, and the end of the first docking steel wire rope is mutually docked with the lower end of the vertical positioning movable member; a docking supply through hole is opened on the inner side of the external heat storage cavity, and the docking supply through hole and the end of the heat conduction pipe fitting are mutually connected.

[0012] Furthermore, the heat conduction pipe transmits the heat generated by the output end of the granulator body to the external heat storage cavity for storage through the docking supply through hole; the docking movable plate drives the vertical positioning movable part to form a vertical sliding structure along the outer side of the granulator body through the guide movable rod, and the vertical positioning movable part drives the fitting docking piston part to move downward along the inner side of the external heat storage cavity through the first docking wire rope.

[0013] Furthermore, the fitting docking piston member forms an elastic structure along the inner side of the external heat storage cavity through the first spring, and in the normal state, the fitting docking piston member is located at the upper end of the docking supply through hole inside the external heat storage cavity through the first spring, and the heat conduction pipe conducts air supply to the inside of the external heat storage cavity through the docking supply through hole.

[0014] Furthermore, the auxiliary guiding structure is provided with a second docking steel wire rope, and the upper end of the second docking steel wire rope is docked with the lower end of the vertical positioning movable part, and the end of the second docking steel wire rope is docked with the upper end of the nested movable guide part; the lower end of the nested movable guide part is rotatably connected to the outer side with a movable toggle part.

[0015] Furthermore, a second spring is fixedly connected to the outer side of the movable toggle member, and the second spring is butted against the lower end of the nested movable guide member, a third butt-jointed steel wire rope is butt-jointed to the lower end of the movable toggle member, and the end of the third butt-jointed steel wire rope is butt-jointed against the inner side of the molding discharge channel.

[0016] Furthermore, when the vertical positioning movable part moves upward along the outer side of the granulator body, the vertical positioning movable part will drive the nested movable guide part to slide upward along the lower end of the molding and discharging channel through the second docking wire rope.

[0017] Furthermore, movable toggle members are distributed at equal angles on the outer side of the lower end of the nested movable guide member, and as the nested movable guide member rises, the movable toggle members will form a rotating structure along the lower end of the nested movable guide member through the traction force of the third docking steel wire rope whose end is fixed in relative position.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The highly efficient and energy-saving PA66 nylon material production granulator is provided with an adaptive movable structure, through which the heat generated inside the granulator body is recovered and conducted. During the operation of the equipment, the heat conduction pipe transmits the heat generated by the output end of the granulator body to the external heat storage cavity through the docking supply through hole for storage and treatment. At the same time, the docking movable plate drives the vertical positioning movable part to slide vertically along the outer side of the granulator body through the guide movable rod according to the drive of the equipment, so that the vertical positioning movable part drives the fitting docking piston part to move downward along the inner side of the external heat storage cavity through the first docking steel wire rope, and then the heat stored inside is stably released to the outer side of the forming discharge channel through the supply docking pipe, and then the outer side of the discharged material is subjected to thermal constant temperature treatment to avoid the phenomenon of breakage when it is directly in contact with cold air. The large heat generated by the operation of the equipment is effectively heat-conducted and recovered.

[0020] Furthermore, when the fitting docking piston member is out of the force state, it will be reset to the upper end of the docking supply through hole along the inner side of the external heat storage cavity through the first spring, so that the heat transfer pipe member can continuously supply air to the inside of the external heat storage cavity through the docking supply through hole for conduction and storage. At the same time, the air supply state of the docking pipe member can meet the dust removal state of the lower end of the molding discharge channel, thereby preventing dust from sticking to the molding material, thereby improving the practicality of the device;

[0021] Furthermore, an auxiliary guiding structure is provided, through which the connection state inside the molding and discharging channel is adaptively adjusted. When the vertical positioning movable part moves upward along the outer side of the granulator body, the vertical positioning movable part will drive the nested movable guide part to slide upward along the lower end of the molding and discharging channel through the second docking steel wire rope, thereby effectively performing reciprocating dredging processing on the material transmission end inside the molding and discharging channel to avoid accumulation and blockage.

[0022] Furthermore, when the nested movable guide member reciprocates along the inside of the molding and discharge channel, the movable toggle member will rotate outward along the nested movable guide member through the traction force of the third docking steel wire rope whose end is fixed in relative position as the nested movable guide member rises, thereby adaptively adjusting the dredging range according to the size of the internal cavity of the molding and discharge channel, avoiding blockage to the greatest extent and facilitating subsequent self-feeding processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a half-cut three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 3 For the present invention Figure 1 A schematic diagram of the partially enlarged structure;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide movable rod of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the heat conduction pipe fitting of the present invention;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the docking movable disk of the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the nested movable guide member of the present invention;

[0030] Figure 8 Provides a three-dimensional structural schematic diagram of a butt-joint pipe fitting of the present invention;

[0031] Figure 9 It is a schematic diagram of the three-dimensional structure of the vertical positioning movable part of the present invention.

[0032] In the figure: 1. Granulator body; 2. External heat storage cavity; 3. Heat transfer pipe; 4. Supply butt joint pipe; 5. Forming discharge channel; 6. Butt joint movable plate; 7. Guide movable rod; 8. Vertical positioning movable part; 9. First butt joint steel wire rope; 10. Fitting butt joint piston part; 11. First spring; 12. Butt joint supply through hole; 13. Second butt joint steel wire rope; 14. Nested movable guide part; 15. Movable toggle part; 16. Second spring; 17. Third butt joint steel wire rope. DETAILED DESCRIPTION

[0033] 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.

[0034] Example 1: Please refer to Figures 1-9 The present invention provides the following technical solutions: A highly efficient and energy-saving granulator for producing PA66 nylon materials, comprising a granulator body 1, an external heat storage cavity 2, a heat conduction pipe 3, a supply butt pipe 4, a molding discharge channel 5, a butt movable disk 6, a guide movable rod 7, a vertical positioning movable part 8, a first butt joint steel wire rope 9, a fitting butt joint piston part 10, a first spring 11, a butt joint supply through hole 12, a second butt joint steel wire rope 13, a nested movable guide part 14, a movable toggle part 15, a second spring 16 and a third butt joint steel wire rope 17;

[0035] An external heat storage cavity 2 is fixedly installed on the outer side of the granulator body 1, and a heat transfer pipe fitting 3 is penetrated and docked at the upper end of the external heat storage cavity 2, and the heat transfer pipe fitting 3 is docked with the outer side of the granulator body 1;

[0036] A forming discharge channel 5 is arranged at the lower end of the granulator body 1, a supply docking pipe fitting 4 is penetrated and docked at the lower end of the external heat storage cavity 2, and the lower end of the supply docking pipe fitting 4 corresponds to the outer side position of the forming discharge channel 5. A docking movable disk 6 is rotatably connected to the outer side of the granulator body 1, and an adaptive movable structure is arranged between the docking movable disk 6 and the granulator body 1 to recover and conduct the heat formed inside the granulator body 1 through the adaptive movable structure; The adaptive movable structure is provided with a guiding movable rod 7, and the upper end of the guiding movable rod 7 is docked on the outer side of the docking movable disk 6, and the lower end of the guiding movable rod 7 is docked with a vertical positioning movable part 8, and the vertical positioning movable part 8 is nested and docked with the outer side of the granulator body 1.

[0037] A fitting piston part 10 is fitted and docked on the inner side of the external heat storage cavity 2, and a first spring 11 is fixedly connected to the upper end of the fitting piston part 10, and the upper end of the first spring 11 is mutually docked with the inner side of the external heat storage cavity 2. A first docking steel wire rope 9 is fixedly connected to the lower end of the fitting piston part 10, and the first docking steel wire rope 9 penetrates along the inner side of the external heat storage cavity 2, and the end of the first docking steel wire rope 9 is mutually docked with the lower end of the vertical positioning movable part 8; A docking supply through hole 12 is opened on the inner side of the external heat storage cavity 2, and the docking supply through hole 12 is mutually communicated with the end of the heat transfer pipe fitting 3. The heat formed by the output end of the granulator body 1 is transmitted to the inside of the external heat storage cavity 2 through the docking supply through hole 12 by the heat transfer pipe fitting 3 for storage; The docking movable disk 6 drives the vertical positioning movable part 8 to form a vertical sliding structure along the outer side of the granulator body 1 through the guiding movable rod 7, and the vertical positioning movable part 8 drives the fitting piston part 10 to move downward along the inner side of the external heat storage cavity 2 through the first docking steel wire rope 9;

[0038] The fitting and docking piston part 10 forms an elastic structure along the inner side of the external heat storage cavity 2 through the first spring 11. In the normal state, the fitting and docking piston part 10 is located at the upper end of the docking supply through-hole 12 on the inner side of the external heat storage cavity 2 through the first spring 11. The heat transfer pipe part 3 supplies gas into the internal of the external heat storage cavity 2 through the docking supply through-hole 12 for conduction. During the operation of the equipment, the heat transfer pipe part 3 transmits the heat generated by the output end of the granulator body 1 to the internal of the external heat storage cavity 2 through the docking supply through-hole 12 for storage and treatment. At the same time, the docking movable disc 6 will drive along with the equipment, and drive the vertical positioning movable part 8 to slide vertically along the outer side of the granulator body 1 through the guiding movable rod 7, so that the vertical positioning movable part 8 drives the fitting and docking piston part 10 to move downward along the inner side of the external heat storage cavity 2 through the first docking steel wire rope 9. Furthermore, the heat stored in it is stably released and supplied to the outside of the forming discharge channel 5 through the supply docking pipe part 4, so as to perform heat constant temperature treatment on the outside of the discharged material, and avoid phenomena such as fracture when it directly contacts cold air. The relatively large heat generated by the equipment operation is effectively used for heat conduction recovery work; when the fitting and docking piston part 10 is in a state of being separated from the force, it will move upward along the inner side of the external heat storage cavity 2 through the first spring 11 and reset to the upper end of the docking supply through-hole 12, so that the heat transfer pipe part 3 can continuously supply gas into the internal of the external heat storage cavity 2 through the docking supply through-hole 12 for storage and conduction. At the same time, the gas supply state of the supply docking pipe part 4 can meet the dust removal state at the lower end of the forming discharge channel 5, and avoid dust sticking to the formed material.

[0039] Embodiment 2: On the basis of Embodiment 1, an auxiliary guiding structure is also disclosed, and its specific structure is as follows:

[0040] A nested movable guiding part 14 is nested and installed at the lower end of the outer side of the granulator body 1, and the lower end of the nested movable guiding part 14 corresponds to the inner side position of the forming discharge channel 5. An auxiliary guiding structure is arranged between the nested movable guiding part 14 and the inner side of the forming discharge channel 5 to adaptively adjust the connection state inside the forming discharge channel 5.

[0041] The auxiliary guide structure is provided with a second butt joint steel wire rope 13, and the upper end of the second butt joint steel wire rope 13 is butt jointed with the lower end of the vertical positioning movable member 8, and the end of the second butt joint steel wire rope 13 is butt jointed with the upper end of the nested movable guide member 14; the lower end of the nested movable guide member 14 is rotatably connected to the outer side with a movable toggle member 15. The outer side of the movable toggle member 15 is fixedly connected with a second spring 16, and the second spring 16 is butt jointed with the lower end of the nested movable guide member 14, the lower end of the movable toggle member 15 is butt jointed with a third butt joint steel wire rope 17, and the end of the third butt joint steel wire rope 17 is butt jointed with the inner side of the molding discharge channel 5. In the process of the vertical positioning movable member 8 moving upward along the outer side of the granulator body 1, the vertical positioning movable member 8 will drive the nested movable guide member 14 to slide upward along the lower end of the molding discharge channel 5 through the second butt joint steel wire rope 13.

[0042] The outer side of the lower end of the nested movable guide 14 is provided with movable toggle members 15 at equal angles, and the movable toggle members 15 will form a rotating structure along the lower end of the nested movable guide 14 through the traction force of the third butt wire rope 17 whose end is fixed at a relative position as the nested movable guide 14 rises; in the process of the vertical positioning movable member 8 moving upward along the outer side of the granulator body 1, the vertical positioning movable member 8 will drive the nested movable guide 14 to slide upward along the lower end of the molding discharge channel 5 through the second butt wire rope 13, thereby The internal material transmission end effectively performs reciprocating dredging processing to avoid accumulation and blockage. When the nested movable guide 14 reciprocates along the inside of the molding and discharge channel 5, the movable toggle member 15 rises with the nested movable guide 14. The traction force of the third docking steel wire rope 17 with a fixed relative position at the end is then used to rotate outward along the nested movable guide 14, thereby adaptively adjusting the dredging range according to the size of the internal cavity of the molding and discharge channel 5, thereby avoiding blockage to the greatest extent and facilitating the subsequent self-feeding processing.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A highly efficient and energy-saving granulator for producing PA66 nylon materials, comprising a granulator body (1), an external heat storage cavity (2) and a heat transfer pipe (3), wherein the external heat storage cavity (2) is fixedly mounted on the outside of the granulator body (1), and the upper end of the external heat storage cavity (2) is penetrated and connected with the heat transfer pipe (3), and the heat transfer pipe (3) is connected with the outside of the granulator body (1); Features: The lower end of the granulator body (1) is provided with a forming and discharging channel (5); the lower end of the external heat storage cavity (2) is penetrated and docked with a supply docking pipe fitting (4), and the lower end of the supply docking pipe fitting (4) corresponds to the outer side of the forming and discharging channel (5); the outer side of the granulator body (1) is rotatably connected with a docking movable disk (6); an adaptive movable structure is provided between the docking movable disk (6) and the granulator body (1), and the heat generated inside the granulator body (1) is recovered and conducted through the adaptive movable structure; A nested movable guide (14) is nested and installed at the lower end of the outer side of the granulator body (1), and the lower end of the nested movable guide (14) corresponds to the inner side of the molding and discharge channel (5), and an auxiliary guide structure is provided between the nested movable guide (14) and the inner side of the molding and discharge channel (5), and the connection state inside the molding and discharge channel (5) is adaptively adjusted by the auxiliary guide structure; The inner side of the external heat storage cavity (2) is fitted and docked with a fitting and docking piston member (10), and the upper end of the fitting and docking piston member (10) is fixedly connected to a first spring (11), and the upper end of the first spring (11) and the inner side of the external heat storage cavity (2) are mutually docked, and the lower end of the fitting and docking piston member (10) is fixedly connected to a first docking steel wire rope (9), and the first docking steel wire rope (9) passes through the inner side of the external heat storage cavity (2), and the end of the first docking steel wire rope (9) and the lower end of the vertical positioning movable member (8) are mutually docked; A docking supply through hole (12) is provided on the inner side of the external heat storage cavity (2), and the docking supply through hole (12) and the end of the heat conduction pipe (3) are connected to each other; The auxiliary guide structure is provided with a second butt-jointed steel wire rope (13), and the upper end of the second butt-jointed steel wire rope (13) is butt-jointed with the lower end of the vertical positioning movable member (8), and the end of the second butt-jointed steel wire rope (13) is butt-jointed with the upper end of the nested movable guide member (14); The outer side of the lower end of the nested movable guide member (14) is rotatably connected to a movable toggle member (15); The outer side of the movable toggle member (15) is fixedly connected to a second spring (16), and the second spring (16) and the lower end of the nested movable guide member (14) are butted against each other. The lower end of the movable toggle member (15) is butted against a third butting steel wire rope (17), and the end of the third butting steel wire rope (17) is butted against the inner side of the molding discharge channel (5).

2. The highly efficient and energy-saving granulator for producing PA66 nylon materials according to claim 1, characterized in that: The self-adaptive movable structure is provided with a guide movable rod (7), and the upper end of the guide movable rod (7) is butted against the outside of the butting movable plate (6), and the lower end of the guide movable rod (7) is butted against a vertical positioning movable member (8), and the vertical positioning movable member (8) is nested and butted against the outside of the granulator body (1).

3. The high-efficiency and energy-saving granulator for producing PA66 nylon materials according to claim 2, characterized in that: The heat transfer pipe (3) transfers the heat generated by the working output end of the granulator body (1) to the external heat storage cavity (2) for storage through the docking supply through hole (12); The docking movable plate (6) drives the vertical positioning movable member (8) via the guide movable rod (7) to form a vertical sliding structure along the outer side of the granulator body (1), and the vertical positioning movable member (8) drives the fitting docking piston member (10) via the first docking wire rope (9) to move downward along the inner side of the external heat storage cavity (2).

4. The high-efficiency and energy-saving granulator for producing PA66 nylon materials according to claim 3 is characterized in that: The fitting butt-jointed piston member (10) forms an elastic structure along the inner side of the external heat storage cavity (2) through the first spring (11), and in a normal state, the fitting butt-jointed piston member (10) is located at the upper end of the butt-jointed supply through hole (12) inside the external heat storage cavity (2) through the first spring (11), and the heat conduction pipe member (3) conducts air supply to the inside of the external heat storage cavity (2) through the butt-jointed supply through hole (12).

5. The high-efficiency and energy-saving granulator for producing PA66 nylon materials according to claim 4, characterized in that: During the upward movement of the vertical positioning movable member (8) along the outer side of the granulator body (1), the vertical positioning movable member (8) will drive the nested movable guide member (14) to slide upward along the lower end of the molding and discharging channel (5) via the second docking steel wire rope (13).

6. The high-efficiency and energy-saving granulator for producing PA66 nylon materials according to claim 5, characterized in that: Movable toggle members (15) are distributed at equal angles on the outer side of the lower end of the nested movable guide member (14), and as the nested movable guide member (14) rises, the movable toggle member (15) forms a rotating structure along the lower end of the nested movable guide member (14) through the traction force of the third butt wire rope (17) whose end is relatively fixed.

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