Winding forming carbon fiber transmission shaft

Abstract

The utility model relates to the technical field of carbon fiber transmission shafts, and discloses a winding forming carbon fiber transmission shaft which comprises a pipe body, fixing mechanisms are installed at the left end and the right end of the pipe body, the fixing mechanisms are used for preventing the two ends of the pipe body from loosening, and limiting mechanisms are installed on the left side and the right side of the outer wall of the pipe body. And the limiting mechanism is used for preventing interlayer stripping. The left end and the right end of the pipe body are sleeved with the fixing blocks, then the clamping plates are placed on the outer walls of the fixing rings at equal intervals, after the second bolts are screwed in, the clamping plates are fixed together, the fixing blocks are prevented from falling off, the fixing rods are rotated, the outer wall hole positions of the fixing rods are flush with the fixing blocks, the flange plates are placed on the outer walls of the fixing blocks, and finally the first bolts are screwed in. The first bolts penetrate through the fixing rods and are screwed into the flange plates, the flange plates and the pipe body are fixed together, and the situation that fiber loosening, resin cracking and edge layering occur at the connecting positions of the two ends of the pipe body and the flange plates, so that the connecting strength is reduced, and end breakage is caused is avoided.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber drive shaft technology, and in particular to a wound carbon fiber drive shaft. Background Technology

[0002] The filament-wound carbon fiber drive shaft is a type of drive shaft manufactured using carbon fiber composite materials through a filament-wound process. It has advantages such as high specific strength, high specific modulus, good corrosion resistance, fatigue resistance, and good vibration reduction performance. It can reduce the overall structural weight, lower usage and maintenance costs, reduce vibration and noise, and increase the critical speed of the drive shaft.

[0003] In the existing technology, this structure consists of a carbon fiber cylinder, a composite material flange, a diaphragm, a hub, and fastener components. The carbon fiber cylinder is formed by winding carbon fiber / epoxy composite material; the composite material flange is made by compression molding glass fiber composite material. The two parts are connected by adhesive bonding and pins. The guide head moves repeatedly at a constant speed in a direction parallel to the mandrel axis, and the mandrel moves at a constant speed around the axis, which can make the carbon fiber form a spiral distribution on the drive shaft, effectively improving the torsional strength and axial stiffness of the drive shaft. However, carbon fiber raw materials are expensive, the initial investment in winding equipment is large, and the process is complex and the production efficiency is relatively low, resulting in an overall manufacturing cost that is much higher than that of traditional metal drive shafts. Currently, automated winding production lines (such as multi-axis linkage winding machines) are used to improve production efficiency and prepreg technology is used to simplify the winding process and reduce manual intervention. However, at both ends of the drive shaft (the part connected to the flange), there are issues such as loose fibers, resin cracking, and edge delamination. The ends are the key parts for transmitting torque on the drive shaft, and defects can lead to a decrease in connection strength and cause end breakage. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a wound carbon fiber drive shaft, which aims to improve the problems of loose fibers, resin cracking and edge delamination at both ends of the drive shaft (the part connected to the flange) in the prior art. The ends are the key parts of the drive shaft that transmit torque, and defects will lead to a decrease in connection strength and cause end breakage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wound carbon fiber drive shaft, comprising a tube body, wherein a fixing mechanism is installed at both the left and right ends of the tube body to prevent the ends of the tube body from loosening; a limiting mechanism is installed on both the left and right sides of the outer wall of the tube body to prevent interlayer peeling; the fixing mechanism comprises a fixing block, the fixing block is installed at the left and right ends of the tube body, and multiple fixing rods are equidistantly rotatably connected to the outer wall of the fixing block, and a bolt is threadedly connected to the inner wall of the fixing rod.

[0006] As a further description of the above technical solution:

[0007] A flange is installed on the outside of the fixing block, and the end of the bolt is threaded to the inner wall of the flange.

[0008] As a further description of the above technical solution:

[0009] A fixing ring is fixedly connected to the inner side of the fixing block, and an installation component is installed on the outer wall of the fixing ring.

[0010] As a further description of the above technical solution:

[0011] The mounting assembly includes a locking plate, which is equidistantly mounted on the outer wall of the fixing ring, and the outer wall of the locking plate is equidistantly threaded with multiple bolts.

[0012] As a further description of the above technical solution:

[0013] The limiting mechanism includes a fixed frame, which is installed on the left and right sides of the outer wall of the tube. The outer wall of the fixed frame is provided with multiple sliding grooves at equal intervals.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the groove is slidably connected to a slider, and the upper part of the outer wall of the slider is threadedly connected to a bolt.

[0016] As a further description of the above technical solution:

[0017] A connecting block is fixedly connected to the lower middle part of the outer wall of the slider. An installation groove is provided in the middle of the outer wall of the connecting block, and a locking component is installed on the inner side of the installation groove.

[0018] As a further description of the above technical solution:

[0019] The engaging assembly includes an outer frame, which is installed on the inner wall of the mounting groove. Multiple bolts are threaded at equal intervals on both the left and right sides of the outer wall of the outer frame.

[0020] As a further description of the above technical solution:

[0021] A universal joint is installed on the right side of the flange at the right end, and the universal joint is fixedly connected to the right side of the outer wall of the flange at the right end.

[0022] As a further description of the above technical solution:

[0023] The outer wall of the pipe is fitted with a protective coating, and the inner wall of the pipe is fitted with a shock-absorbing sleeve.

[0024] This utility model has the following beneficial effects:

[0025] 1. In this utility model, the fixing block is placed on the left and right ends of the pipe body, and the snap-fit ​​plate is placed equidistantly on the outer wall of the fixing ring. After the bolt two is screwed in, the snap-fit ​​plate is fixed together to prevent the fixing block from falling off. The fixing rod is rotated so that the hole on the outer wall of the fixing rod is flush with the fixing block. The flange is placed on the outer wall of the fixing block, and finally the bolt one is screwed in. The bolt one passes through the fixing rod and is screwed into the flange to fix the flange to the pipe body. This prevents the fiber from loosening, the resin from cracking, and the edge from delaminating at the connection between the two ends of the pipe body and the flange, which would lead to a decrease in connection strength and cause the end to break.

[0026] 2. In this utility model, the fixing frame is placed at the connection between the pipe body and the flange, and the sliders are placed into the slide grooves respectively. Bolt three is screwed in, and bolt three passes through the slider and the fixing frame to prevent the slider from sliding out of the slide groove. Then, the two outer frames are placed in the mounting grooves on the outer wall of the connecting block and spliced ​​together. Bolt four is screwed in so that the outer frames can lock the connecting blocks together to prevent loosening. This can prevent the separation between the fiber layers on both sides of the pipe body, forming interlayer gaps and cracks, which would lead to structural disintegration. Attached Figure Description

[0027] Figure 1 This is a perspective view of the wound carbon fiber drive shaft proposed in this utility model;

[0028] Figure 2 This is a front view of the wound carbon fiber drive shaft proposed in this utility model;

[0029] Figure 3 This is an exploded view of the structure of the wound carbon fiber drive shaft proposed in this utility model;

[0030] Figure 4 This is a partial structural schematic diagram of the wound carbon fiber drive shaft proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the limiting mechanism for the wound carbon fiber drive shaft proposed in this utility model.

[0032] Legend:

[0033] 1. Pipe body; 2. Universal joint; 3. Shock-absorbing sleeve; 4. Protective coating; 5. Fixing mechanism; 501. Flange; 502. Fixing rod; 503. Bolt 1; 504. Fixing block; 505. Fixing ring; 506. Mounting assembly; 5061. Bolt 2; 5062. Clamping plate; 6. Limiting mechanism; 601. Fixing frame; 602. Slide groove; 603. Slider; 604. Bolt 3; 605. Mounting groove; 606. Connecting block; 607. Clamping assembly; 6071. Outer frame; 6072. Bolt 4. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a wound carbon fiber drive shaft, comprising a tube body 1. Fixing mechanisms 5 are installed at both the left and right ends of the tube body 1 to prevent loosening at both ends. Limiting mechanisms 6 are installed on both the left and right sides of the outer wall of the tube body 1 to prevent interlayer peeling. The fixing mechanism 5 includes a fixing block 504, which is installed at the left and right ends of the tube body 1. Multiple fixing rods 502 are rotatably connected at equal intervals to the outer wall of the fixing block 504. Bolt 503 is threadedly connected to the inner wall of the fixing block 504; flange 501 is installed on the outer side of the fixing block 504, and the end of bolt 503 is threadedly connected to the inner wall of flange 501; fixing ring 505 is fixedly connected to the inner side of fixing block 504, and mounting assembly 506 is installed on the outer wall of fixing ring 505; mounting assembly 506 includes locking plate 5062, locking plate 5062 is equidistantly installed on the outer wall of fixing ring 505, and multiple bolts 5061 are threadedly connected to the outer wall of locking plate 5062 at equal intervals;

[0036] Specifically, the fixing block 504 is fitted onto the left and right ends of the pipe body 1. Then, the clamping plate 5062 is placed equidistantly on the outer wall of the fixing ring 505. After the bolt 5061 is screwed in, the clamping plate 5062 is fixed together to prevent the fixing block 504 from falling off. The fixing rod 502 is rotated so that the hole on the outer wall of the fixing rod 502 is flush with the fixing block 504. The flange 501 is placed on the outer wall of the fixing block 504. Finally, the bolt 503 is screwed in. The bolt 503 passes through the fixing rod 502 and is screwed into the flange 501 to fix the flange 501 to the pipe body 1. This prevents the fibers from becoming loose, the resin from cracking, and the edges from delaminating at the connection between the two ends of the pipe body 1 and the flange 501, which would reduce the connection strength and cause the end to break.

[0037] Reference Figure 1 , Figure 2 and Figure 5The limiting mechanism 6 includes a fixed frame 601, which is installed on the left and right sides of the outer wall of the tube body 1. The outer wall of the fixed frame 601 is provided with multiple sliding grooves 602 at equal intervals. A slider 603 is slidably connected to the inner wall of the sliding groove 602. A bolt 604 is threadedly connected to the upper part of the outer wall of the slider 603. A connecting block 606 is fixedly connected to the lower part of the outer wall of the slider 603. An installation groove 605 is provided in the middle of the outer wall of the connecting block 606. A locking assembly 607 is installed on the inner side of the installation groove 605. The locking assembly 607 includes an outer frame 6071, which is installed on the inner wall of the installation groove 605. Multiple bolts 6072 are threadedly connected to the left and right sides of the outer wall of the outer frame 6071 at equal intervals.

[0038] Specifically, the fixing frame 601 is placed on the connection between the pipe body 1 and the flange 501, and the sliders 603 are placed into the slide grooves 602 respectively. Bolts 604 are screwed in, and bolts 604 pass through the sliders 603 and the fixing frame 601 to prevent the sliders 603 from sliding out of the slide grooves 602. Then, the two outer frames 6071 are placed in the mounting grooves 605 on the outer wall of the connecting block 606 and spliced ​​together. Bolts 6072 are screwed in, so that the outer frames 6071 can lock the connecting block 606 together to prevent loosening. This can prevent the separation between the fiber layers on both sides of the pipe body 1, forming interlayer gaps and cracks, which would lead to structural disintegration.

[0039] Reference Figure 1 , Figure 2 and Figure 3 A universal joint 2 is installed on the right side of the right flange 501. The universal joint 2 is fixedly connected to the right side of the outer wall of the right flange 501. A protective coating 4 is installed on the outer wall of the pipe body 1. A shock-absorbing sleeve 3 is installed on the inner wall of the pipe body 1.

[0040] Specifically, when there is an angle between the two ends of the drive shaft (such as the connection between the automotive drive shaft and the drive axle), a universal joint 2 needs to be installed at the end to realize torque transmission between different axes, compensate for angular deviation, ensure transmission smoothness, and extend the service life of the drive shaft with a protective coating 4. In particular, it protects the main structure under harsh working conditions (such as muddy, high temperature, and corrosive environments). Rubber and composite material damping sleeves 3 are installed inside the tube body 1 to reduce the noise transmitted to the vehicle body and equipment.

[0041] Working principle: First, place the fixing blocks 504 on the left and right ends of the pipe body 1 respectively, ensuring that the fixing blocks 504 fit tightly against the pipe body 1. Next, evenly place the locking plates 5062 on the outer wall of the fixing ring 505, maintaining an equidistant arrangement. Then, screw the bolts 5061 into the corresponding threaded holes in sequence, so that the locking plates 5062 are firmly fixed on the fixing ring 505, thereby effectively preventing the fixing blocks 504 from falling off the pipe body 1. Subsequently, manually rotate the fixing rod 502 to adjust its position so that the holes on the outer wall of the fixing rod 502 are aligned with the corresponding holes on the fixing blocks 504. After full alignment, place the flange 501 accurately on the outer wall of the fixing block 504, ensuring that the contact surfaces of the two are completely aligned. Finally, pass the bolts 503 through the holes on the fixing rod 502 and screw them into the threaded holes of the flange 501. Through the tightening action of the bolts 503, the flange 501 and the pipe body 1 are firmly fixed together. This connection method can effectively avoid quality problems such as fiber loosening, resin cracking and edge delamination at the connection points between the two ends of the pipe body 1 and the flange 501, thereby preventing end breakage due to decreased connection strength.

[0042] Place the fixing frame 601 onto the connection between the pipe body 1 and the flange 501, ensuring that the fixing frame 601 completely covers the connection. Then, place the sliders 603 into the grooves 602 on the fixing frame 601, allowing the sliders 603 to slide smoothly within the grooves 602. Next, screw the bolts 604 into the corresponding threaded holes. The bolts 604 pass through the sliders 603 and the fixing frame 601, acting as a limit to prevent the sliders 603 from accidentally sliding out of the grooves 602. Finally, place the two outer frames 6071 on the connecting block 6. The two outer frames 6071 are spliced ​​together in the mounting groove 605 on the outer wall of the tube 1 to form a complete frame structure. Finally, the bolts 6072 are screwed into the corresponding threaded holes. Through the tightening action of the bolts 6072, the outer frame 6071 can firmly lock the connecting block 606 together, preventing the connection from loosening. This structural design can effectively prevent the separation between the fiber layers on both sides of the tube 1, avoid forming interlayer gaps and cracks, thereby ensuring the integrity of the overall structure and preventing failure problems caused by structural disintegration.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wound-form carbon fibre drive shaft comprising a tube (1) characterised in that: The pipe body (1) is equipped with a fixing mechanism (5) at both the left and right ends. The fixing mechanism (5) is used to prevent the two ends of the pipe body (1) from becoming loose. The pipe body (1) is equipped with a limiting mechanism (6) on both the left and right sides of its outer wall. The limiting mechanism (6) is used to prevent interlayer peeling. The fixing mechanism (5) includes a fixing block (504), which is installed at the left and right ends of the tube body (1). Multiple fixing rods (502) are equidistantly rotatably connected to the outer wall of the fixing block (504), and bolts (503) are threadedly connected to the inner wall of the fixing rods (502).

2. The filament wound carbon fiber drive shaft of claim 1, wherein: A flange (501) is installed on the outside of the fixing block (504), and the end of the bolt (503) is threaded to the inner wall of the flange (501).

3. The wound carbon fiber drive shaft according to claim 1, characterized in that: A fixing ring (505) is fixedly connected to the inner side of the fixing block (504), and an installation assembly (506) is installed on the outer wall of the fixing ring (505).

4. The filament wound carbon fiber drive shaft of claim 3, wherein: The mounting assembly (506) includes a locking plate (5062), which is equidistantly mounted on the outer wall of the fixing ring (505), and the outer wall of the locking plate (5062) is equidistantly threaded with a plurality of bolts (5061).

5. The filament wound carbon fiber drive shaft of claim 1, wherein: The limiting mechanism (6) includes a fixing frame (601), which is installed on the left and right sides of the outer wall of the tube (1). The outer wall of the fixing frame (601) is provided with multiple sliding grooves (602) at equal intervals.

6. The filament wound carbon fiber drive shaft of claim 5, wherein: The inner wall of the groove (602) is slidably connected to a slider (603), and the upper part of the outer wall of the slider (603) is threadedly connected to a bolt (604).

7. The filament wound carbon fiber drive shaft of claim 6, wherein: A connecting block (606) is fixedly connected to the lower middle part of the outer wall of the slider (603). An installation groove (605) is provided in the middle of the outer wall of the connecting block (606). A locking component (607) is installed on the inner side of the installation groove (605).

8. The filament wound carbon fiber drive shaft of claim 7, wherein: The engaging assembly (607) includes an outer frame (6071), which is installed on the inner wall of the mounting groove (605). The outer frame (6071) has multiple bolts (6072) threaded at equal intervals on both the left and right sides of the outer wall.

9. The filament wound carbon fiber drive shaft of claim 2, wherein: A universal joint (2) is installed on the right side of the flange (501) at the right end, and the universal joint (2) is fixedly connected to the right side of the outer wall of the flange (501) at the right end.

10. The filament wound carbon fiber drive shaft of claim 1, wherein: The outer wall of the tube (1) is fitted with a protective coating (4), and the inner wall of the tube (1) is fitted with a shock-absorbing sleeve (3).

Images