A rod-type multi-bundle fiber spiral winding device

Abstract

The present invention belongs to the field of carbon fiber winding technology, and aims to solve the problem that current hoop winding and spiral winding equipment are limited to single or several bundles of winding, and the supporting automatic yarn feeding system is not yet mature, resulting in stress concentration in the wound products and low winding efficiency. A rod-type multi-bundle fiber spiral winding device is provided, including a frame, a wire guide head assembly, a wire guide head spinning mechanism, a wire guide head radial telescopic mechanism and a semi-automatic yarn guiding mechanism; wherein the wire guide head spinning mechanism is used to drive the wire guide head assembly to perform spinning motion, the wire guide head radial telescopic mechanism is used to drive the wire guide head assembly to perform radial telescopic motion, and the semi-automatic yarn guiding mechanism is used to feed the fiber filaments to the wire guide head assembly, and to adjust the fiber filament tension and recover the film peeled off the fiber filaments. The present invention can realize the synchronous spiral winding of multiple fiber bundles, improve the winding efficiency, and solve the problems of difficult yarn feeding and difficult intervention in the winding process.

Description

Technical Field

[0001] The invention belongs to the technical field of carbon fiber winding, and in particular relates to a rod-type multi-bundle fiber spiral winding device. Background Art

[0002] Fiber composite materials have been widely used in many fields due to their high strength, light weight, corrosion resistance and other properties.

[0003] As a kind of fiber composite material forming process, the carbon fiber winding process has the characteristics of anisotropy, obvious strength directionality, and only very low shear strength between layers. Therefore, the carbon fiber winding process has become a widely used fiber composite material forming process.

[0004] The forming equipment determines the strength and various properties of the manufactured material. Currently, the main winding methods are hoop winding, longitudinal winding, spiral winding, and planar winding. However, hoop winding and spiral winding equipment are currently limited to winding single or multiple bundles, and the supporting automatic yarn feeding systems are still immature. These methods suffer from drawbacks such as stress concentration in the wound product, low winding strength, and low efficiency, making them unsuitable for large-scale industrial production environments. Summary of the Invention

[0005] In order to solve at least one of the above technical problems existing in the prior art, the present invention provides a rod-type multi-bundle fiber spiral winding device.

[0006] The present invention is implemented by the following technical solution: a rod-type multi-bundle fiber spiral winding device, including a frame, a wire guide head assembly, a wire guide head spinning mechanism, a wire guide head radial telescopic mechanism and a semi-automatic yarn guiding mechanism; the frame includes a left frame plate, a middle frame plate and a right frame plate coaxially connected in sequence; the wire guide head spinning mechanism, the wire guide head radial telescopic mechanism and the semi-automatic yarn guiding mechanism are all installed on the frame, wherein the wire guide head spinning mechanism is used to drive the wire guide head assembly to perform spinning motion, the wire guide head radial telescopic mechanism is used to drive the wire guide head assembly to perform radial telescopic motion, and the semi-automatic yarn guiding mechanism is used to send the fiber filaments to the wire guide head assembly, and to adjust the fiber filament tension and recover the film peeled off the fiber filaments.

[0007] Preferably, the guide wire head spinning mechanism includes a spinning drive motor, a first spinning drive pinion, a spinning drive gear, an inner ring of the spinning drive gear, N second spinning drive pinions, a first pulley, a toothed belt, and a second pulley;

[0008] The spin drive motor is installed between the left frame plate and the middle frame plate, the output end of the spin drive motor is connected to the first spin drive pinion via the first spin drive shaft, the first spin drive shaft is arranged along the axial direction of the middle frame plate, the first spin drive pinion is located between the middle frame plate and the right frame plate, the first spin drive pinion is externally meshed with the cylindrical spur tooth portion of the inner ring of the spin drive gear, the inner ring of the spin drive gear is rotatably connected to the inside of the spin drive gear, and the two constitute a rolling bearing rotation mechanism, and the end gear portion of the spin drive gear is externally meshed with the second spin drive pinion;

[0009] The second spin drive pinion is installed on the upper part of the second spin drive shaft, the second spin drive shaft is arranged along the radial direction of the middle frame plate, the second spin drive shaft is rotatably connected to the two stud bearing seats on the right frame plate, the first pulley is installed at the lower end of the second spin drive shaft, the toothed belt passes through the right frame plate and is connected between the first pulley and the second pulley, the second pulley is rotatably connected to the outer side of the right frame plate, and the outer side of the second pulley is slidably connected to the wire guide tube of the wire guide head assembly.

[0010] Preferably, the guide wire head radial telescopic mechanism includes a helical-bevel gear reduction motor, a radial telescopic drive shaft, a radial telescopic drive pinion, a radial telescopic drive gear, an inner ring of the radial telescopic gear, N connecting rods, a guide wire head connector, a connecting plate, a slider and a guide rail;

[0011] The helical-bevel gear reduction motor is installed between the left frame plate and the middle frame plate, and the output end of the helical-bevel gear reduction motor is connected to the radial telescopic drive pinion via the radial telescopic drive shaft. The radial telescopic drive shaft is arranged along the axial direction of the middle frame plate and rotatably penetrates and is connected to the middle frame plate and the right frame plate. The radial telescopic drive pinion is located on the outside of the right frame plate. The radial telescopic drive pinion is externally meshed with the radial telescopic drive gear. The inner ring of the radial telescopic gear is rotatably connected to the inside of the radial telescopic drive gear and the two constitute a rolling bearing rotation mechanism. The inner ring of the radial telescopic gear is installed on the right frame plate, and the outer end surface of the inner ring of the radial telescopic gear is provided with N rotating pair mounting seats at intervals along the circumference.

[0012] N guide rails are laid at intervals along the circumference on the outer end surface of the right frame plate. The length direction of the guide rails is consistent with the radial direction of the right frame plate. A slider is slidably connected to the guide rail, and a connecting plate is fixed on the slider. A rotating pair mounting seat and a wire guide head connector are provided on the connecting plate. Both ends of the connecting rod are connected to the inner ring of the radial telescopic gear and the two corresponding rotating pair mounting seats on the connecting plate. The tail end of the wire guide tube of the wire guide head assembly is rotatably connected to the wire guide head connector.

[0013] Preferably, the semi-automatic yarn guiding mechanism includes a yarn feeding drive motor, a first yarn feeding drive shaft, a first yarn feeding drive pinion, a yarn feeding drive gear, an inner ring of the yarn feeding drive gear, an unwinding roller, a damping drive shaft, a damping motor, a film winding shaft, a film winding roller, a film winding drive motor, and N second yarn feeding drive pinions, a second yarn feeding drive shaft, a first yarn feeding drive bevel gear, a second yarn feeding drive bevel gear, a third yarn feeding drive shaft, a first frame plate, a driving roller, a second frame plate, a sliding assembly, a driven roller shaft, a driven roller, a cylinder pushing assembly, and a yarn guide roller assembly;

[0014] The yarn feeding drive motor is installed between the left frame plate and the middle frame plate, and the output end of the yarn feeding drive motor is connected to the first yarn feeding drive pinion via the first yarn feeding drive shaft, and the first yarn feeding drive shaft is arranged along the axial direction of the middle frame plate, and the first yarn feeding drive pinion is located between the middle frame plate and the right frame plate, and the first yarn feeding drive pinion is meshed with the outer surface of the yarn feeding drive large gear, and the inner ring of the yarn feeding drive large gear rotates and is connected to the inside of the yarn feeding drive large gear and the two constitute a rolling bearing rotating mechanism, and the inner ring of the yarn feeding drive large gear is fixed to the right machine On the inner end surface of the frame plate, the yarn feed drive gear is externally meshed with N second yarn feed drive pinions arranged at intervals along the circumference of the inner end surface of the right frame plate; the second yarn feed drive pinion is installed on the corresponding second yarn feed drive shaft, and the second yarn feed drive shaft is axially arranged along the right frame plate and rotates through the middle frame plate and the right frame plate, and the outer end of the second yarn feed drive shaft is installed with the first yarn feed drive bevel gear, the first yarn feed drive bevel gear is located on the outer side of the right frame plate, and the first yarn feed drive bevel gear is meshed with the second yarn feed drive bevel gear;

[0015] The outer end surface of the right frame plate is provided with N support structures consisting of a first frame plate and a second frame plate at intervals along the circumference. The third yarn feeding drive shaft is provided along the radial direction of the right frame plate and is rotatably connected to the support structure. A driving roller is installed on the third yarn feeding drive shaft at a position between the first frame plate and the second frame plate. A driven roller shaft is slidably connected to a position between the first frame plate and the second frame plate near the right frame plate through a sliding assembly. The driven roller is rotatably connected to the driven roller shaft. The relative position relationship between the driven roller and the driving roller is changed by a cylinder pushing assembly.

[0016] The damping motor is arranged on the right end face of the middle frame plate, and the output end of the damping motor is connected to the unwinding roller through the damping drive shaft. The damping drive shaft is arranged along the axial direction of the middle frame plate and rotates through the left frame plate and the middle frame plate. The unwinding roller is located on the left side of the left frame plate, and the film rolling drive motor is installed on the right end face of the left frame plate. The output end of the film rolling drive motor is connected to the film rolling roller through the film rolling shaft. The film rolling shaft is arranged along the axial direction of the left frame plate and rotates through the left frame plate. The film rolling roller is located on the left side of the left frame plate. N yarn guide roller groups are arranged at intervals along the circumference of the end face of the frame, and the N yarn guide roller groups are used to smoothly guide the fiber filaments to the corresponding drive rollers.

[0017] Preferably, the yarn guide roller assembly includes a first roller, a first roller mounting shaft, a second roller, a second roller mounting shaft, a third roller, a third roller mounting shaft, a fourth roller, a fourth roller mounting shaft, a fifth roller, a fifth roller mounting shaft, a first fifth roller mounting shaft seat, a second fifth roller mounting shaft seat, a sixth roller, a first sixth roller mounting shaft seat, a second sixth roller mounting shaft seat and a sixth roller mounting shaft;

[0018] The first roller mounting shaft, the second roller mounting shaft, the third roller mounting shaft and the fourth roller mounting shaft are distributed on the left end surface of the left frame plate in a preset circumferential direction and at intervals of preset angles. The first roller, the second roller, the third roller (517) and the fourth roller are mounted on the corresponding roller mounting shafts, forming a spatial spiral curve for yarn guiding on the path.

[0019] The fifth roller mounting shaft seat one and the fifth roller mounting shaft seat two are installed on the outer circumference of the left frame plate, and the fifth roller is rotatably connected between the fifth roller mounting shaft seat one and the fifth roller mounting shaft seat two through the fifth roller mounting shaft; the sixth roller mounting shaft seat two and the sixth roller mounting shaft are installed on the outer circumference of the right frame plate, and the sixth roller is rotatably connected between the sixth roller mounting shaft seat two and the sixth roller mounting shaft through the sixth roller mounting shaft seat one.

[0020] Preferably, the sliding assembly includes two sliding rods and four sliding seats. The inner end surfaces of the first frame plate and the second frame plate are each provided with two sliding seats. A sliding rod is connected between the two sliding seats, and each end of the driven roller is slidably connected to a sliding rod.

[0021] Preferably, the cylinder pushing assembly includes a push rod, a cylinder frame and a cylinder. The push rod is a U-shaped structure and is threadedly connected to the driven roller shaft. The cylinder frame is installed between the first frame plate and the second frame plate. The cylinder is installed on the cylinder frame and the telescopic guide rod of the cylinder is connected to the push rod.

[0022] Preferably, the wire guide head assembly includes a wire guide tube and a guide wheel, and the guide wheel is installed at the tail end of the wire guide tube through a rolling bearing.

[0023] Preferably, the frame further includes a main frame base, a left auxiliary frame base and a right auxiliary frame base, the middle frame plate and the right frame plate are installed on the right side of the main frame base, and the left frame plate is installed on the left side of the main frame base, and the lower parts of the left frame plate, the middle frame plate and the right frame plate are limited by multiple groups of studs and nuts distributed along the circumference of the central axis at the lower part of the main frame base; the upper parts of the left frame plate and the middle frame plate are fixed around the circumference by multiple groups of bolts and nuts; the left auxiliary frame base is located on the left side of the left frame plate and the two are connected and fixed by studs and nuts, the right auxiliary frame base is located on the right side of the right frame plate and the two are connected and fixed by studs and nuts, and the main frame base, the left auxiliary frame base and the right auxiliary frame base are connected by multiple groups of bolts and nuts penetrating the three.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention can realize synchronous spiral winding of multiple fiber bundles, improve winding efficiency, and solve the problems of difficult yarn feeding, easy stress concentration of wound products, and difficult intervention in the winding process.

[0026] The radial expansion and contraction mechanism of the guidewire head adjusts according to the diameter of the rotor being wound, maintaining optimal contact between the end of the guidewire tube and the outer surface of the rotor. Simultaneously, the guidewire head's rotational mechanism allows the fiber to be wound at varying helical angles as needed, resulting in products with varying performance. This also ensures a closer fit of the fiber to the rotor, evenly distributing the fibers without crossing or overlapping, thus reducing fiber usage.

[0027] The wire guide tube in the wire guide head assembly is provided with a rectangular half-open slit of appropriate size to facilitate the guiding work of the first yarn threading. The tail is designed to be arc-shaped, and the upper half of the wire guide tube is dug into a gradually smaller circular through hole along the central axis, and the arc transition part of the tail is dug into a gradually smaller rectangular through hole. At the same time, the tail is equipped with a guide wheel tangent to the neutral plane of the rectangle, which can make the fiber yarn more smooth during the winding process, avoiding excessive tension that causes greater stress on the fiber at the outlet. At the same time, the compaction effect of the guide wheel makes the fiber yarn fit more closely to the outer surface of the rotating body.

[0028] There is a certain misalignment between the circumferential distribution of the film winding roller and the circumferential distribution of the unwinding roller, which can avoid 180-degree separation of the film yarn. At the same time, the existence of the damping motor can keep the yarn in the appropriate tension during the transfer process. The four rollers with spatial spiral distribution make the yarn change direction smoothly and reach between the active roller and the driven roller.

[0029] The semi-automatic yarn guide mechanism utilizes a gear transmission to transmit power from the yarn feed drive motor to the active roller, resulting in a more compact gear drive structure. The radially telescopic drive gear and connecting plate are connected by rods, rationally distributing the axial space radially and streamlining the overall structure. The radial telescopic mechanism of the guide head utilizes gear meshing transmission, while the guide head's self-spinning mechanism utilizes a combination of gear and belt drive, resulting in higher transmission precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a front view of the overall structure of the present invention;

[0033] Figure 3 It is a right side view of the overall structure of the present invention;

[0034] Figure 4 It is a top view of the overall structure of the present invention;

[0035] Figure 5 It is a rear view of the overall structure of the present invention;

[0036] Figure 6 It is a right sectional view of the overall structure of the present invention;

[0037] Figure 7 Schematic diagram of the radial telescopic mechanism of the guide wire head of the present invention;

[0038] Figure 8 is a schematic diagram of the overall structure of the present invention from a first viewing angle;

[0039] Figure 9 is a schematic diagram of the overall structure of the present invention from a second viewing angle;

[0040] Figure 10 is a schematic diagram of the overall structure of the present invention from a third viewing angle;

[0041] Figure 11 is a schematic diagram of the overall structure of the present invention from a fourth viewing angle;

[0042] Figure 12 yes Figure 6 A partial enlarged view of point F in the middle;

[0043] Figure 13yes Figure 9 A partial enlarged view of point D in the middle;

[0044] Figure 14 yes Figure 10 A partial enlarged view of point G in the middle;

[0045] Figure 15 yes Figure 3 A partial enlarged view of point C in the middle;

[0046] Figure 16 yes Figure 8 A partial enlarged view of point A in the middle;

[0047] Figure 17 yes Figure 11 A partial enlarged view of point E in the middle;

[0048] Figure 18 yes Figure 2 A partial enlarged view of point B in the middle;

[0049] Figure 19 It is an axonometric view of the structure of the present invention along the symmetric axis of the yarn feeding drive motor.

[0050] In the figure: 101 - helical-bevel gear reduction motor, 102 - radial telescopic drive shaft, 103 - radial telescopic drive pinion, 104 - radial telescopic drive gear, 105 - radial telescopic gear inner ring, 106 - connecting rod, 107 - guide wire head connector, 108 - connecting plate, 109 - slider, 110 - guide rail, 111 - reduction motor mounting plate;

[0051] 201-left rack plate, 202-middle rack plate, 203-right rack plate, 204-main rack base, 205-left auxiliary rack base, 206-right auxiliary rack base;

[0052] 301-spin drive motor, 302-first spin drive shaft, 303-first spin drive pinion, 304-second spin drive shaft, 305-two-head stud bearing seat 1, 306-second spin drive pinion, 307-two-head stud bearing seat 2, 308-second pulley, 309-toothed belt, 310-first pulley, 311-inner ring of spin drive gear, 312-spin drive motor fixing seat, 313-spin drive gear;

[0053] 401-wire guide tube, 402-guide wheel;

[0054] 501-yarn feeding drive motor, 502-first yarn feeding drive shaft, 503-first yarn feeding drive pinion, 504-second yarn feeding drive pinion, 505-yarn feeding drive motor mounting bracket, 507-unwinding roller, 508-damping drive shaft, 509-damping motor, 510-film winding shaft, 511-film winding roller, 512-film winding drive motor, 513-first roller, 514-first roller mounting shaft, 515-second roller, 516-second roller mounting shaft, 517-third roller, 518-third roller mounting shaft, 519-fourth roller, 520-fourth roller mounting shaft, 521-fifth roller, 522-fifth roller mounting shaft seat 1, 52 3-fifth roller mounting shaft seat 2, 524-fifth roller mounting shaft, 525-sixth roller, 526-sixth roller mounting shaft seat 1, 527-sixth roller mounting shaft seat 2, 528-sixth roller mounting shaft, 529-third yarn feeding drive shaft, 530-second yarn feeding drive shaft, 531-first yarn feeding drive bevel gear, 532-second yarn feeding drive bevel gear, 534-first frame, 535-driving roller, 536-second frame, 537-sliding rod, 538-sliding seat, 539-driven roller shaft, 540-driven roller, 541-push rod, 542-cylinder frame, 543-cylinder, 544-yarn feeding drive large gear, 545-yarn feeding drive large gear inner ring. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other implementations derived by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0056] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention. It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0057] The present invention provides an embodiment:

[0058] like Figures 1 to 19As shown, a rod-type multi-bundle fiber spiral winding device includes a frame, a wire guide head assembly, a wire guide head spinning mechanism, a wire guide head radial telescopic mechanism and a semi-automatic yarn guiding mechanism; the frame includes a left frame plate 201, a middle frame plate 202 and a right frame plate 203 that are coaxially connected in sequence; the wire guide head assembly includes a wire guide tube 401 and a guide wheel 402, the guide wheel 402 is installed at the tail of the wire guide tube 401 through a rolling bearing, and the right frame plate 203 has a radial through hole, and the wire guide head assembly is slidably connected to the right frame plate 203 along the through hole; the wire guide head spinning mechanism, the wire guide head radial telescopic mechanism and the semi-automatic yarn guiding mechanism are all installed on the frame, wherein the wire guide head spinning mechanism is used to drive the wire guide head assembly to spin, the wire guide head radial telescopic mechanism is used to drive the wire guide head assembly to perform radial telescopic movement, and the semi-automatic yarn guiding mechanism is used to send the fiber to the wire guide head assembly, and to adjust the fiber tension and recover the film peeled off the fiber.

[0059] The left and right auxiliary rack bases 205 and 206 are fixed to each other by a plurality of bolts and nuts.

[0060] The guide wire head spinning mechanism includes a spin drive motor 301, a first spin drive pinion 303, a spin drive gear 313, an inner ring of the spin drive gear 311 and N second spin drive pinions 306, a first pulley 310, a toothed belt 309 and a second pulley 308 and a spin drive motor fixing seat 312; the spin drive motor 301 is fixed to the spin drive motor fixing seat 312 by bolts, and the spin drive motor fixing seat 312 is respectively connected to the left frame plate 201 and the middle frame plate 202 by bolts. Then, the middle frame plate 202 is dug with a through hole, in which a bearing and a retaining ring are installed for installing the first spin drive shaft 302. The two ends of the first spin drive shaft 302 are connected to the spin drive motor 301 and the first spin drive pinion 303 using a coupling and a key and a keyway respectively. The position of the first spin drive pinion 303 is limited by an axial locking nut. The first spin drive shaft 302 is arranged along the axial direction of the middle frame plate 202. The first spin drive pinion 303 is located between the middle frame plate 202 and the right frame plate 203. A spin drive pinion 303 is externally meshed with the cylindrical spur tooth portion of the spin drive gear inner ring 311. The spin drive gear inner ring 311 is rotatably connected to the inside of the spin drive gear 313 and the two constitute a rolling bearing rotation mechanism. The end gear portion of the spin drive gear 313 is externally meshed with the second spin drive pinion 306. The second spin drive pinion 306 is keyed to the upper part of the second spin drive shaft 304. The second spin drive shaft 304 is arranged along the radial direction of the middle frame plate 202. 304 is rotatably connected to the two stud bearing seats on the right side frame plate 203, and the two stud bearing seats include a two-head stud bearing seat 1 305 and a two-head stud bearing seat 2 307. The first pulley 310 is keyed to the lower end of the second spin drive shaft 304, and the toothed belt 309 passes through the right side frame plate 203 and is connected between the first pulley 310 and the second pulley 308. The second pulley 308 is rotatably connected to the outside of the right side frame plate 203, and the outside of the second pulley 308 is slidably connected to the wire guide tube 401 of the wire guide head assembly.

[0061] During operation, the first spin drive shaft 302 is driven by the spin drive motor 301, which drives the first spin drive pinion 303 to engage with the spin drive gear 313 for transmission, and then drives several second spin drive pinions 306. The second spin drive pinions 306 drive the second spin drive shaft 304 to rotate, and the several second spin drive shafts 304 drive the corresponding first pulleys 310. The first pulley 310 and the second pulley 308 are driven. The second pulley 308 and the guide wire tube 401 are coaxially connected with the shaft key and keyway. The second pulley 308 drives the spin movement of the guide wire head assembly.

[0062] The radial telescopic mechanism of the wire guide head includes a helical-bevel gear reduction motor 101, a radial telescopic drive shaft 102, a radial telescopic drive pinion 103, a radial telescopic drive gear 104, an inner ring of the radial telescopic gear 105, N connecting rods 106, a wire guide head connector 107, a connecting plate 108, a slider 109 and a guide rail 110; the helical-bevel gear reduction motor 101 is installed between the left frame plate 201 and the middle frame plate 202, and the left frame plate 201 and the middle frame plate 202 are connected. The through hole has a coaxial center, in which a bearing and a spring retaining ring are installed. The radial telescopic drive shaft 102 is installed between the two. One end is connected to the helical-bevel gear reduction motor 101 through a coupling, and the other end is connected to the radial telescopic drive pinion 103 through a spline. The radial telescopic drive shaft 102 is arranged along the axial direction of the middle frame plate 202 and rotates through and is connected to the middle frame plate 202 and the right frame plate 203. The radial telescopic drive pinion 103 is located on the outside of the right frame plate 203. The small gear 103 is externally meshed with the radial telescopic driving gear 104, and the inner ring 105 of the radial telescopic driving gear is rotatably connected to the inside of the radial telescopic driving gear 104 and the two constitute a rolling bearing rotation mechanism. The inner ring 105 of the radial telescopic driving gear is mounted on the right side frame plate 203. The outer end surface of the inner ring 105 of the radial telescopic driving gear is provided with N rotating sub-mounts at intervals along the circumference for mounting bearings; the outer end surface of the right side frame plate 203 is provided with N guide rails 110 at intervals along the circumference. The length direction of the guide rail 110 is consistent with the radial direction of the right frame plate 203. A slider 109 is slidably connected to the guide rail 110, and a connecting plate 108 is fixed on the slider 109. A rotating pair mounting seat and a guide wire head connector 107 are provided on the connecting plate 108. The two ends of the connecting rod 106 are connected to the inner ring 105 of the radial telescopic large gear and the two corresponding rotating pair mounting seats on the connecting plate 108. The tail end of the guide wire tube 401 of the guide wire head assembly is rotatably connected to the guide wire head connector 107.

[0063] During operation, power is input by the helical-bevel gear reduction motor 101 to drive the radial telescopic drive shaft 102 to drive the radial telescopic drive small gear 103 to engage with the radial drive large gear 104, and the radial telescopic drive large gear 104 rotates counterclockwise. Under the guidance of the guide rail 110 and the slider 109, the connecting rod 106 drives the slider 109 to move in the direction of a larger radius, and vice versa; the slider 109 is connected to the guide wire tube 401 through the connecting plate 108 and the guide wire head connector 107 to realize the radial telescopic movement of the guide wire head assembly.

[0064] The semi-automatic yarn guiding mechanism includes a yarn feeding drive motor 501, a first yarn feeding drive shaft 502, a first yarn feeding drive pinion 503, a yarn feeding drive gear 544, an inner ring of the yarn feeding drive gear 545, an unwinding roller 507, a damping drive shaft 508, a damping motor 509, a film winding shaft 510, a film winding roller 511, a film winding drive motor 512, and N second yarn feeding drive pinions 504, a second yarn feeding drive shaft 530, a first yarn feeding drive bevel gear 531, a second yarn feeding drive bevel gear 532, a third yarn feeding drive shaft 529, a first frame 534, a driving roller 535, a second frame 536, a sliding assembly, a driven roller shaft 539, a driven roller 540, a cylinder pushing assembly, a yarn guide roller assembly, and a yarn feeding drive motor mounting frame 505;

[0065] The yarn feeding drive motor 501 is installed between the left frame plate 201 and the middle frame plate 202 through the yarn feeding drive motor mounting bracket 505. The output end of the yarn feeding drive motor 501 is connected to the first yarn feeding drive pinion 503 through the first yarn feeding drive shaft 502. The first yarn feeding drive shaft 502 is arranged along the axial direction of the middle frame plate 202. The first yarn feeding drive pinion 503 is located between the middle frame plate 202 and the right frame plate 203. The first yarn feeding drive pinion 503 is externally meshed with the yarn feeding drive large gear 544. The inner ring 545 of the yarn feeding drive large gear is rotatably connected to the inside of the yarn feeding drive large gear 544 and the two constitute a rolling bearing rotating mechanism. The inner ring 545 of the yarn feeding drive large gear 5 is fixed on the inner end surface of the right frame plate 203, and the yarn feeding drive gear 544 is externally meshed with N second yarn feeding drive pinions 504 arranged at intervals along the circumference of the inner end surface of the right frame plate 203; the second yarn feeding drive pinions 504 are mounted on corresponding second yarn feeding drive shafts 530, and the second yarn feeding drive shaft 530 is axially arranged along the right frame plate 203 and rotates through the middle frame plate 202 and the right frame plate 203. The outer end of the second yarn feeding drive shaft 530 is mounted with a first yarn feeding drive bevel gear 531, which is located on the outer side of the right frame plate 203 and meshes with the second yarn feeding drive bevel gear 532;

[0066] The outer end surface of the right frame plate 203 is provided with N support structures consisting of a first frame plate 534 and a second frame plate 536 at intervals along the circumference. The third yarn feeding drive shaft 529 is provided along the radial direction of the right frame plate 203 and is rotatably connected to the support structure. A driving roller 535 is installed on the third yarn feeding drive shaft 529 at a position between the first frame plate 534 and the second frame plate 536. The position between the first frame plate 534 and the second frame plate 536 near the right frame plate 203 is slidable by a sliding assembly. The driven roller 539 is rotatably connected to the driven roller shaft 539. The driven roller 540 is rotatably connected to the driven roller shaft 539. The relative position of the driven roller 540 and the driving roller 535 is changed by the cylinder push assembly. The sliding assembly includes two slide rods 537 and four slide seats 538. Two slide seats 538 are provided on the inner end surfaces of the first frame 534 and the second frame 536. A slide rod 537 is connected between the two slide seats 538. The driven roller shaft 539 is slidably connected to each end of the slide rod 537. The cylinder push assembly includes a push rod 541, a cylinder frame 542, and a cylinder 543. The push rod 541 has a U-shaped structure and is threadedly connected to the driven roller shaft 539. The cylinder frame 542 is installed between the first frame 534 and the second frame 536. The cylinder 543 is installed on the cylinder frame 542, and the telescopic guide rod of the cylinder 543 is connected to the push rod 541.

[0067] The damping motor 509 is arranged on the right end face of the middle frame plate 202, and the output end of the damping motor 509 is connected to the unwinding roller 507 through the damping drive shaft 508. The damping drive shaft 508 is arranged along the axial direction of the middle frame plate 202 and rotates through the left frame plate 201 and the middle frame plate 202. The unwinding roller 507 is located on the left side of the left frame plate 201, and the film rolling drive motor 512 is installed on the right end face of the left frame plate 201. The output end of the film rolling drive motor 512 is connected to the film rolling roller 511 through the film rolling shaft 510. The film rolling shaft 510 is arranged along the axial direction of the left frame plate 201 and rotates through the left frame plate 201. The film rolling roller 511 is located on the left side of the left frame plate 201. N yarn guide roller groups are arranged at intervals along the circumference of the end face of the frame. The N yarn guide roller groups are used to smoothly guide the fiber filaments to the corresponding drive rollers 535.

[0068] The yarn guide roller assembly includes a first roller 513, a first roller mounting shaft 514, a second roller 515, a second roller mounting shaft 516, a third roller 517, a third roller mounting shaft 518, a fourth roller 519, a fourth roller mounting shaft 520, a fifth roller 521, a fifth roller mounting shaft 524, a fifth roller mounting shaft seat 1 522, a fifth roller mounting shaft seat 2 523, a sixth roller 525, a sixth roller mounting shaft seat 1 526, a sixth roller mounting shaft seat 2 527 and a sixth roller mounting shaft 528; the first roller mounting shaft 514, the second roller mounting shaft 516, the third roller mounting shaft 518 and the fourth roller mounting shaft 520 are distributed on the left end surface of the left frame plate 201 at intervals of 30 degrees in a preset circumferential direction. On the left side, the first roller 513, the second roller 515, the third roller 517 and the fourth roller 519 are installed on the corresponding roller mounting shafts, forming a spatial spiral curve for guiding yarn on the path; the fifth roller mounting shaft seat 1 522 and the fifth roller mounting shaft seat 2 523 are installed on the outer circumference of the left frame plate 201, and the fifth roller 521 is rotatably connected between the fifth roller mounting shaft seat 1 522 and the fifth roller mounting shaft seat 2 523 through the fifth roller mounting shaft 524; the sixth roller mounting shaft seat 2 527 and the sixth roller mounting shaft 528 are installed on the outer circumference of the right frame plate 203, and the sixth roller 525 is rotatably connected between the sixth roller mounting shaft seat 2 527 and the sixth roller mounting shaft 528 through the sixth roller mounting shaft seat 1 526.

[0069] During operation, the two yarn feeding drive motors 501 serve as drive inputs to drive the corresponding first yarn feeding drive shafts 502, thereby driving the first yarn feeding drive pinion 503 to mesh with the yarn feeding drive large gear 544. The yarn feeding drive large gear 544 has a large tooth width and can mesh with the first yarn feeding drive pinion 503 and the second yarn feeding drive pinion 504 at the same time, thereby driving the second yarn feeding drive shaft 530.

[0070] The second yarn feed drive shaft 530 then drives the meshed first and second yarn feed drive bevel gears 531 and 532, which in turn drive the third yarn feed drive shaft 529. The third yarn feed drive shaft 529 drives the drive roller 535. Six rollers form a smooth spatial curve, guiding the fiber filaments smoothly to the drive roller 535. The pneumatic cylinder 543 inflates and pushes the push rod 541 forward. The push rod 541 is connected to the driven roller shaft 539, which in turn pushes the driven roller 540 until the driven roller 540 and the drive roller 535 clamp the fiber filaments. Driven by friction, the fiber filaments are automatically transported from the fiber roll to the guide head assembly. When the sensor detects that the fiber tension does not meet the requirements, the damping motor 509 drives the unwinding roller 507 to adjust the tension. During normal winding, the film winding drive motor 512 drives the film winding roller 511, which recycles the film peeled off the fiber filaments through rotational winding. These three mechanisms operate independently and do not interfere with each other.

[0071] The workflow of the present invention is as follows: first, the inner liner is wound at the bottle mouth. Since the diameter of the bottle mouth is constantly changing, from small to large, to ensure the uniformity of the winding, the contact area of each bundle of fibers with the inner liner is also gradually increased. When the transition from the bottle mouth to the bottle body is completed, the contact area between the fibers and the inner liner is the largest. When winding starts at the bottle mouth, the helical-bevel gear reduction motor 101 inputs power to drive the radial telescopic drive shaft 102, driving the radial telescopic drive pinion 103 to rotate counterclockwise, and the radial telescopic drive gear 104 meshing with it to move clockwise. Under the guidance of the guide rail 110 and the slider 109, the connecting rod 106 drives the slider 109 to move in the direction of a smaller radius. The slider 109 is connected to the guide wire tube 401 through the connecting plate 108 and the guide wire head connector 107, and the guide wire head assembly moves in the direction of a smaller radius.

[0072] At this point, all guide wire head assemblies maintain synchronous movement. When the guide wheel 402 of the guide wire head assembly is tangentially aligned with the inner liner bottle, the helical-bevel gear reduction motor 101 stops, and all movements stop. At this point, the guide wire head assembly extends to the appropriate position, and then the cylinder 543 is inflated to push the push rod 541 forward. The push rod 541 is connected to the driven roller shaft 539, and then pushes the driven roller 540 until the driven roller 540 and the driving roller 535 clamp the fiber filament. The cylinder 543 stops inflating and maintains the current state. At this point, all driven rollers 540 and cylinders 543 have reached the correct position, and the preparation work is complete.

[0073] The fiber side begins to wind, causing the inner liner to rotate circumferentially and move axially. At the same time, the two yarn feeding drive motors 501 serve as drive inputs to drive the corresponding first yarn feeding drive shaft 502, driving the meshing movement between the first yarn feeding drive pinion 503 and the yarn feeding drive large gear 544. The yarn feeding drive large gear 544 has a large tooth width and can mesh with the first yarn feeding drive pinion 503 and the second yarn feeding drive pinion 504 at the same time, so that the second yarn feeding drive shaft 530 is driven; the second yarn feeding drive shaft 530 then drives the meshed first yarn feeding drive shaft The bevel gear 531 and the second yarn feeding drive bevel gear 532 are driven, and the third yarn feeding drive shaft 529 is driven. The third yarn feeding drive shaft 529 drives the drive roller 535. The six rollers form a smooth spatial curve, which guides the fiber yarn smoothly to the drive roller 535. The cylinder 543 is inflated to push the push rod 541 forward. The push rod 541 is connected to the driven roller shaft 539, and then pushes the driven roller 540 until the driven roller 540 and the driving roller 535 clamp the fiber yarn. The fiber yarn clamped by the driving roller 535 and the driven roller 540 is driven.

[0074] At the same time, the helical-bevel gear reduction motor 101 starts to rotate in the opposite direction, and its speed is controlled so that the wire guide head assembly retracts as the radius of curvature at the liner head changes. At the same time, the spin drive motor 301 outputs counterclockwise, drives the first spin drive shaft 302, drives the first spin drive pinion 303 to engage with the spin drive gear 313 for transmission, and then drives a number of second spin drive pinions 306, and the second spin drive pinions 306 drive the second spin drive shaft 304 to rotate, and the second spin drive shafts 304 drive the corresponding first pulleys 310, and the first pulley 310 and the second pulley 308 are driven, and the second pulley 308 is connected with the wire guide tube 401 by the coaxial shaft key and keyway. The wire guide tube 401 is driven, and the speed of the spin drive motor 301 is controlled, so that the wire guide head rotates as the radius of curvature at the liner head changes. At this time, the wire guide head assembly both rotates and retracts radially.

[0075] When the winding reaches the transition position between the bottle mouth and the bottle body, the wire guide head assembly retracts to the maximum position, and the contact area between the fiber and the inner liner is the largest. At this time, the helical-bevel gear reduction motor 101 and the spin drive motor 301 stop rotating. The inner liner continues to be driven to move axially and rotate circumferentially to perform spiral winding on the bottle body. At this stage, the wire guide head assembly does not move. After completing the winding of the bottle body, at the transition position between the bottle body and the head at the other end, the helical-bevel gear reduction motor 101 starts to output clockwise, and controls its rotation speed so that the wire guide head assembly extends along with the change of the curvature radius at the inner liner head. At the same time, the spin drive motor 301 starts to output clockwise, and controls the rotation speed of the spin drive motor 301 so that the wire guide head assembly rotates along with the change of the curvature radius at the inner liner head. At this time, the wire guide head assembly both rotates and extends radially. In conjunction with the axial movement and circumferential rotation of the inner liner, the spiral winding of the other end of the inner liner is completed, thereby completing the spiral winding operation of the first layer of the inner liner.

[0076] The foregoing description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A rod-type multi-bundle fiber spiral winding device, characterized by: It includes a frame and a wire guide head assembly installed on the frame, a wire guide head spinning mechanism, a wire guide head radial telescopic mechanism and a semi-automatic yarn guiding mechanism; The frame comprises a left frame plate (201), a middle frame plate (202) and a right frame plate (203) which are coaxially arranged; the wire guide head self-spinning mechanism is used to drive the wire guide head assembly to spin, and the wire guide head radial telescopic mechanism is used to drive the wire guide head assembly to radially telescope; The semi-automatic yarn guiding mechanism comprises a yarn feeding drive motor (501), a first yarn feeding drive pinion (503), a yarn feeding drive gear (544), an unwinding roller (507), a damping motor (509), and N second yarn feeding drive pinions (504), a second yarn feeding drive shaft (530), a first yarn feeding drive bevel gear (531), a second yarn feeding drive bevel gear (532), a third yarn feeding drive shaft (529), a driving roller (535), a driven roller shaft (539), a driven roller (540), and a yarn guide roller assembly; A first yarn feeding drive pinion (503) driven by a yarn feeding drive motor (501) is externally meshed with a yarn feeding drive gear (544), and the yarn feeding drive gear (544) is externally meshed with N second yarn feeding drive pinions (504) spaced apart along the inner end surface of the right frame plate (203); the second yarn feeding drive pinions (504) are mounted on a second yarn feeding drive shaft (530), and a first yarn feeding drive bevel gear (531) meshing with a second yarn feeding drive bevel gear (532) is provided at an outer end of the second yarn feeding drive shaft (530); The outer end surface of the right frame plate (203) is provided with N supporting structures at intervals along the circumference. A third yarn feeding drive shaft (529) having a second yarn feeding drive bevel gear (532) installed at the end thereof is rotatably connected to the supporting structure. A driving roller (535) is installed on the third yarn feeding drive shaft (529). A driven roller shaft (539) is slidably connected to the supporting structure via a sliding assembly. A driven roller (540) rotatably connected to the driven roller shaft (539) changes its relative position with the driving roller (535) via a cylinder pushing assembly. The unwinding roller (507) is driven by a damping motor (509), and N yarn guide roller groups are arranged at intervals along the circumference of the end surface of the frame, for guiding the fiber yarn to the corresponding driving roller (535); the first roller mounting shaft (514), the second roller mounting shaft (516), the third roller mounting shaft (518) and the fourth roller mounting shaft (520) of the yarn guide roller group are distributed on the left end surface of the left frame plate (201) at preset angle intervals, and the first roller (513), the second roller (515), the third roller (517) and the fourth roller (519) of the yarn guide roller group are installed on the corresponding roller mounting shafts, forming a spatial spiral curve for guiding yarn on the path.

2. The rod-type multi-bundle fiber spiral winding device according to claim 1, characterized in that: The guide wire head spinning mechanism comprises a spin drive motor (301), a first spin drive pinion (303), a spin drive gearwheel (313), an inner ring of the spin drive gearwheel (311), N second spin drive pinions (306), a first pulley (310), a toothed belt (309), and a second pulley (308); The spin drive motor (301) is installed between the left frame plate (201) and the middle frame plate (202); the output end of the spin drive motor (301) is connected to the first spin drive pinion (303) via the first spin drive shaft (302); the first spin drive shaft (302) is arranged along the axial direction of the middle frame plate (202); the first spin drive pinion (303) is located between the middle frame plate (202) and the right frame plate (203); the first spin drive pinion (303) is externally meshed with the cylindrical spur tooth portion of the inner ring (311) of the spin drive gear; the inner ring (311) of the spin drive gear is rotatably connected to the inside of the spin drive gear (313) and the two constitute a rolling bearing rotation mechanism; the end face gear portion of the spin drive gear (313) is externally meshed with the second spin drive pinion (306); The second spin drive pinion (306) is installed on the upper part of the second spin drive shaft (304), the second spin drive shaft (304) is arranged along the radial direction of the middle frame plate (202), the second spin drive shaft (304) is rotatably connected to two stud bearing seats on the right frame plate (203), the first pulley (310) is installed at the lower end of the second spin drive shaft (304), the toothed belt (309) passes through the right frame plate (203) and is connected between the first pulley (310) and the second pulley (308), the second pulley (308) is rotatably connected to the outer side of the right frame plate (203), and the outer side of the second pulley (308) is slidably connected to the wire guide tube (401) of the wire guide head assembly.

3. The rod-type multi-bundle fiber spiral winding device according to claim 1, characterized in that: The guide wire head radial telescopic mechanism comprises a helical-bevel gear reduction motor (101), a radial telescopic drive shaft (102), a radial telescopic drive pinion (103), a radial telescopic drive gearwheel (104), an inner ring of the radial telescopic gearwheel (105), N connecting rods (106), a guide wire head connector (107), a connecting plate (108), a slider (109), and a guide rail (110); The helical-bevel gear reduction motor (101) is installed between the left frame plate (201) and the middle frame plate (202). The output end of the helical-bevel gear reduction motor (101) is connected to the radial telescopic drive pinion (103) via the radial telescopic drive shaft (102). The radial telescopic drive shaft (102) is arranged along the axial direction of the middle frame plate (202) and is rotatably connected to the middle frame plate (202) and the right frame plate (203). The radial telescopic drive pinion (103) is located On the outside of the right frame plate (203), the radial telescopic driving pinion (103) is externally meshed with the radial telescopic driving gear (104), the radial telescopic gear inner ring (105) is rotatably connected to the inside of the radial telescopic driving gear (104), and the two constitute a rolling bearing rotary mechanism, the radial telescopic gear inner ring (105) is mounted on the right frame plate (203), and the outer end surface of the radial telescopic gear inner ring (105) is provided with N rotating sub-mounts at intervals along the circumference; N guide rails (110) are laid along the circumferential intervals on the outer end surface of the right frame plate (203), and the length direction of the guide rail (110) is consistent with the radial direction of the right frame plate (203). A slider (109) is slidably connected to the guide rail (110), and the connecting plate (108) is fixed on the slider (109). A rotating sub-mounting seat and a guide wire head connector (107) are provided on the connecting plate (108). The two ends of the connecting rod (106) are connected to the inner ring of the radial telescopic gear (105) and the two corresponding rotating sub-mounting seats on the connecting plate (108), and the tail end of the guide wire tube (401) of the guide wire head assembly is rotatably connected to the guide wire head connector (107).

4. The rod-type multi-bundle fiber spiral winding device according to claim 1, characterized in that: The semi-automatic yarn guiding mechanism further comprises a first yarn feeding drive shaft (502), an inner ring of a yarn feeding drive gear (545), a film winding shaft (510), a film winding roller (511), and a film winding drive motor (512); The yarn feeding drive motor (501) is installed between the left frame plate (201) and the middle frame plate (202). The output end of the yarn feeding drive motor (501) is connected to the first yarn feeding drive pinion (503) via the first yarn feeding drive shaft (502). The first yarn feeding drive shaft (502) is arranged along the axial direction of the middle frame plate (202). The first yarn feeding drive pinion (503) is located between the middle frame plate (202) and the right frame plate (203). The inner ring (545) of the yarn feeding drive gear is rotatably connected to the inside of the yarn feeding drive gear (544) and the two constitute a rolling bearing rotary mechanism. The inner ring (545) of the yarn feeding drive gear is fixed to the right frame plate. (203); the second yarn feeding drive pinion (504) is mounted on the corresponding second yarn feeding drive shaft (530), the second yarn feeding drive shaft (530) is axially arranged along the right frame plate (203) and rotates through the middle frame plate (202) and the right frame plate (203), and the first yarn feeding drive bevel gear (531) is located on the outside of the right frame plate (203); the third yarn feeding drive shaft (529) is radially arranged along the right frame plate (203), and the support structure is slidably connected to the driven roller shaft (539) through a sliding assembly at a position close to the right frame plate (203); the output end of the film rolling drive motor (512) is connected to the film rolling roller (511).

5. The rod-type multi-bundle fiber spiral winding device according to claim 4, characterized in that: The yarn guide roller assembly further includes a fifth roller (521), a fifth roller mounting shaft (524), a fifth roller mounting shaft seat 1 (522), a fifth roller mounting shaft seat 2 (523), a sixth roller (525), a sixth roller mounting shaft seat 1 (526), a sixth roller mounting shaft seat 2 (527) and a sixth roller mounting shaft (528); The fifth roller mounting shaft seat 1 (522) and the fifth roller mounting shaft seat 2 (523) are mounted on the outer circumference of the left frame plate (201), and the fifth roller (521) is rotatably connected between the fifth roller mounting shaft seat 1 (522) and the fifth roller mounting shaft seat 2 (523) via the fifth roller mounting shaft (524); the sixth roller mounting shaft seat 2 (527) and the sixth roller mounting shaft (528) are mounted on the outer circumference of the right frame plate (203), and the sixth roller (525) is rotatably connected between the sixth roller mounting shaft seat 2 (527) and the sixth roller mounting shaft (528) via the sixth roller mounting shaft seat 1 (526).

6. The rod-type multi-bundle fiber spiral winding device according to claim 4, characterized in that: The sliding assembly includes two slide bars (537) and four slide seats (538). The inner end surfaces of the first frame plate (534) and the second frame plate (536) are both provided with two slide seats (538). A slide bar (537) is connected between the two slide seats (538). Both ends of the driven roller shaft (539) are slidably connected to a slide bar (537).

7. The rod-type multi-bundle fiber spiral winding device according to claim 6, characterized in that: The cylinder push assembly includes a push rod (541), a cylinder frame (542) and a cylinder (543). The push rod (541) is a U-shaped structure and is threadedly connected to the driven roller shaft (539). The cylinder frame (542) is installed between the first frame plate (534) and the second frame plate (536). The cylinder (543) is installed on the cylinder frame (542) and the telescopic guide rod of the cylinder (543) is connected to the push rod (541).

8. The rod-type multi-bundle fiber spiral winding device according to claim 1, characterized in that: The wire guide head assembly comprises a wire guide tube (401) and a guide wheel (402), wherein the guide wheel (402) is mounted on the tail of the wire guide tube (401) via a rolling bearing.

9. The rod-type multi-bundle fiber spiral winding device according to claim 1, characterized in that: The frame further comprises a main frame base (204), a left auxiliary frame base (205) and a right auxiliary frame base (206), the middle frame plate (202) and the right frame plate (203) are mounted on the right side of the main frame base (204), the left frame plate (201) is mounted on the left side of the main frame base (204), and the lower parts of the left frame plate (201), the middle frame plate (202) and the right frame plate (203) are limited by a plurality of sets of studs and nuts distributed along the circumference of the central axis at the lower part of the main frame base (204); The upper parts of the left frame plate (201) and the middle frame plate (202) are fixed around the circumference by multiple sets of bolts and nuts; the left auxiliary frame base (205) is located on the left side of the left frame plate (201) and the two are connected and fixed by studs and nuts, the right auxiliary frame base (206) is located on the right side of the right frame plate (203) and the two are connected and fixed by studs and nuts, and the bottoms of the main frame base (204), the left auxiliary frame base (205) and the right auxiliary frame base (206) are connected by multiple sets of bolts and nuts passing through the three.

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