CN111288090A - Composite material transmission shaft connecting structure - Google Patents
Composite material transmission shaft connecting structure Download PDFInfo
- Publication number
- CN111288090A CN111288090A CN202010083573.0A CN202010083573A CN111288090A CN 111288090 A CN111288090 A CN 111288090A CN 202010083573 A CN202010083573 A CN 202010083573A CN 111288090 A CN111288090 A CN 111288090A
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- Prior art keywords
- connecting piece
- composite material
- mounting hole
- sliding groove
- transmission shaft
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- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000003292 glue Substances 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 11
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/064—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable
- F16D1/068—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable involving gluing, welding or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a composite material transmission shaft connecting structure and relates to the technical field of composite material connection. The composite material transmission shaft connecting structure comprises: the first connecting piece, the second connecting piece and the clamp are sleeved from inside to outside in sequence; the bonding layer is arranged between the first connecting piece and the second connecting piece and used for bonding the outer side wall of the first connecting piece and the inner side wall of the second connecting piece; the clamp is provided with a mounting hole in a penetrating manner, the positions, corresponding to the mounting hole, of the second connecting piece, the first connecting piece and the bonding layer are provided with connecting holes communicated with the mounting hole, and the third connecting piece sequentially penetrates through the mounting hole and the connecting holes so as to enable the first connecting piece, the second connecting piece and the clamp to be connected with each other; the first connecting piece is one of a flange and a composite material shaft tube, and the second connecting piece is the other of the flange and the composite material shaft tube. The reliability of the transmission shaft connection is improved.
Description
Technical Field
The invention relates to the technical field of composite material connection, in particular to a composite material transmission shaft connecting structure.
Background
The composite material has the advantages of high specific strength, high specific modulus, large damping ratio, fatigue resistance and the like, and the transmission shaft made of the composite material is particularly suitable for long-span, large-torque and high-rotating-speed transmission systems. The transmission system is applied to transmission systems in the fields of energy sources, automobiles, military industry and the like at present, and achieves good effects.
The existing composite material transmission shaft mostly adopts a glue joint connection mode, because the peeling strength of a glue layer is low and the stress is concentrated, a glue joint area is often the weakest link in the composite material transmission shaft, and the reliability of the transmission shaft connection is difficult to ensure by adopting the single connection mode of glue joint; in addition, the unevenness of the composite material is larger than that of the metal material, so that the initial unbalance amount of the composite material transmission shaft manufactured by the winding or pipe coiling process is larger, and the dynamic performance of the transmission shaft is seriously influenced; at present, a method of sticking a balancing weight on an axle tube is mostly adopted to carry out dynamic balance weight, and the method has the problems of complex operation and easy falling of the balancing weight.
Disclosure of Invention
The invention mainly aims to provide a composite material transmission shaft connecting structure, and aims to provide a composite material transmission shaft connecting structure which is reliable in connection, high in dynamic balance precision and capable of realizing dynamic balance counterweight.
In order to achieve the above object, the present invention provides a composite material transmission shaft connecting structure, including:
the first connecting piece, the second connecting piece and the clamp are sleeved from inside to outside in sequence;
the bonding layer is arranged between the first connecting piece and the second connecting piece and used for bonding the outer side wall of the first connecting piece and the inner side wall of the second connecting piece; and the number of the first and second groups,
the clamp is provided with a mounting hole in a penetrating manner, the positions, corresponding to the mounting hole, of the second connecting piece, the first connecting piece and the bonding layer are provided with connecting holes communicated with the mounting hole, and the third connecting piece sequentially penetrates through the mounting hole and the connecting holes so as to enable the first connecting piece, the second connecting piece and the clamp to be connected with each other;
the first connecting piece is one of a flange and a composite material shaft tube, and the second connecting piece is the other of the flange and the composite material shaft tube.
Optionally, the mounting hole and the connecting hole form a plurality of mounting hole groups, and the third connecting member is provided with a plurality of mounting hole groups corresponding to the plurality of mounting hole groups.
Optionally, the third connector comprises a pin.
Optionally, the side wall of the pin is bonded with the hole wall of the connecting hole; and the side wall of the pin is bonded with the hole wall of the mounting hole.
Optionally, the lateral wall of first connecting piece is equipped with the step portion, so that the lateral wall of first connecting piece forms high step face and low step face, high step face with the inside wall butt of second connecting piece, low step face with the inside wall interval of second connecting piece forms the encapsulating clearance, the adhesive linkage fill in the encapsulating clearance.
Optionally, a distance between the low step surface and the inner side wall of the second connecting piece is 0.1 mm-0.2 mm.
Optionally, the composite material transmission shaft connecting structure further comprises a balancing weight, and the balancing weight is arranged on the clamp.
Optionally, the spout has been seted up on the side or the outer peripheral face of clamp, the spout is followed the circumference of clamp extends, just the groove width of the notch department of spout is less than the groove width of the tank bottom department of spout, balancing weight detachably sets up in the spout.
Optionally, the composite material transmission shaft connecting structure further includes a fastener, the fastener includes a fixing portion and a connecting portion extending from a bottom side of the fixing portion, the connecting portion is connected to the weight block, the fixing portion is located outside the chute, and the bottom side of the fixing portion abuts against an outer edge of the notch of the chute, so that the weight block and the clamp are relatively fixed.
Optionally, at least one end of the sliding groove is formed with an inlet, and the inlet is used for the counterweight block to enter/exit the sliding groove along the groove depth direction of the sliding groove.
According to the technical scheme, the composite material transmission shaft connecting structure is designed, the first connecting piece and the second connecting piece are bonded through the bonding layer, the hoop is clamped at the bonding end, the strength of the connecting structure is improved, in addition, the third connecting piece penetrates through the mounting hole and the connecting hole respectively, the first connecting piece, the second connecting piece and the hoop are connected with one another, the relative positions of the hoop, the first connecting piece and the second connecting piece are stable and unchanged through axial and circumferential positioning of the hoop, the first connecting piece and the second connecting piece, and compared with a traditional connecting structure, the connecting structure is higher in connecting strength and is not prone to loosening. The invention adopts the combination of three modes of glue joint, clamp fixing and third connecting piece, thus improving the reliability of the connection of the transmission shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of one embodiment of a composite driveshaft connection structure provided by the present invention;
FIG. 2 is an enlarged view of the composite driveshaft connection shown in FIG. 1;
FIG. 3 is a cross-sectional view of the composite driveshaft connection shown in FIG. 2;
fig. 4 is a side and front view of the clip shown in fig. 2.
The reference numbers illustrate:
| 1 | first connecting |
31 | |
| 11 | Connecting |
32 | |
| 13 | |
321 | |
| 14 | |
4 | Third connecting |
| 2 | Second connecting |
5 | |
| 3 | Clamp hoop |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front, rear, outer and inner … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing composite material transmission shaft mostly adopts a glue joint connection mode, because the peeling strength of a glue layer is low and the stress is concentrated, a glue joint area is often the weakest link in the composite material transmission shaft, and the reliability of the transmission shaft connection is difficult to guarantee by adopting the single glue joint connection mode.
In view of this, the invention provides a composite material transmission shaft connecting structure, and aims to provide a composite material transmission shaft connecting structure which is reliable in connection, high in dynamic balance precision and capable of realizing dynamic balance counterweight. FIG. 1 is a schematic view of one embodiment of a composite driveshaft connection structure provided by the present invention; FIG. 2 is an enlarged view of the composite driveshaft connection shown in FIG. 1; FIG. 3 is a cross-sectional view of the composite driveshaft connection shown in FIG. 2; fig. 4 is a side and front view of the clip shown in fig. 2.
As shown in fig. 1-2, the composite material transmission shaft connecting structure provided by the embodiment of the invention comprises a first connecting piece 1, a second connecting piece 2, a hoop 3, an adhesive layer and a third connecting piece 4 which are sequentially sleeved from inside to outside. The bonding layer is arranged between the first connecting piece 1 and the second connecting piece 2 and is used for bonding the outer side wall of the first connecting piece 1 and the inner side wall of the second connecting piece 2; a mounting hole 31 penetrates through the hoop 3, a connecting hole 11 communicated with the mounting hole 31 is formed in the positions, corresponding to the mounting hole 31, of the second connecting piece 2, the first connecting piece 1 and the bonding layer, and the third connecting piece 4 sequentially penetrates through the mounting hole 31 and the connecting hole 11 so that the first connecting piece 1, the second connecting piece 2 and the hoop 3 are connected with each other; the first connecting piece 1 is one of a flange and a composite material shaft tube, and the second connecting piece 2 is the other of the flange and the composite material shaft tube.
In the technical scheme of the invention, the composite material transmission shaft connecting structure is designed, the first connecting piece 1 and the second connecting piece 2 are bonded through the bonding layer, the hoop 3 is clamped at the bonding end part, the strength of the connecting structure is improved, in addition, the third connecting piece 4 penetrates through the mounting hole 31 and the connecting hole 11 respectively, the first connecting piece 1, the second connecting piece 2 and the hoop 3 are connected with each other, and the relative positions of the hoop 3, the first connecting piece 1 and the second connecting piece 2 are stable and unchanged through the axial and circumferential positioning of the hoop 3, the first connecting piece 1 and the second connecting piece 2. The invention adopts the combination of three modes of glue joint, clamp 3 fixation and third connecting piece 4, thus improving the reliability of the connection of the transmission shaft.
In the embodiment of the invention, the first connecting piece 1 is a flange, the second connecting piece 2 is a composite material shaft tube, when the composite material transmission shaft connecting structure is connected, the surfaces of the first connecting piece 1 and the second connecting piece 2 which are bonded are cleaned, then an adhesive is coated, then the flange and the composite material shaft tube are installed and aligned, the adhesive is cured in a rotary curing furnace, after the adhesive is cured completely, a connecting hole 11 on the flange is drilled according to the connecting hole 11 on the composite material shaft tube, and finally, the third connecting piece 4 is inserted into the connecting hole 11 and the installing hole 31.
The number of the third connecting members 4 is not limited in the present invention, and preferably, in the embodiment of the present invention, as shown in fig. 2 and 3, the mounting holes 31 and the connecting holes 11 constitute a plurality of mounting hole groups, and the third connecting members 4 are provided in a plurality corresponding to the plurality of mounting hole groups. The arrangement of the plurality of mounting hole groups increases the stability of the composite material transmission shaft connecting structure.
Preferably, in the embodiment of the present invention, as shown in fig. 3, the third connecting member 4 includes a pin.
In order to make the pin connection more compact, in the embodiment of the present invention, preferably, the side wall of the pin is adhered to the hole wall of the connection hole 11; the side walls of the pins are bonded to the walls of the mounting holes 31. The pin can be effectively prevented from falling off from the mounting hole 31 group through bonding, and the stability of the composite material transmission shaft connecting structure is further improved. When the clamp 3 is connected, firstly, the surface of the pin 4 is uniformly coated with adhesive, then the clamp 3 is connected with the composite material shaft tube and the flange by using the adhesive, and finally, bolts among all sections of the clamp 3 are screwed down.
In addition, in order to make the thickness of the adhesive uniform when the adhesive is applied, in the embodiment of the present invention, preferably, the outer sidewall of the first connector 1 is provided with a stepped portion, so that the outer sidewall of the first connector 1 forms a high stepped surface 13 and a low stepped surface 14, the high stepped surface 13 abuts against the inner sidewall of the second connector 2, the low stepped surface 14 and the inner sidewall of the second connector 2 form a glue filling gap at an interval, and the adhesive layer is filled in the glue filling gap. Simple structure and convenient implementation.
In addition, the distance between the low step surface 14 and the inner side wall of the second connecting piece 2 is 0.1 mm-0.2 mm. Therefore, the thickness of the bonding layer can be controlled within the range, on one hand, the connection strength is ensured, and on the other hand, the using amount of the used viscose glue is saved.
In order to solve the problems, in the embodiment of the invention, as shown in fig. 2, the composite material transmission shaft connecting structure further comprises a balancing weight 5, and the balancing weight 5 is arranged on the hoop 3, so that the transmission shaft achieves dynamic balance.
In addition, as shown in fig. 3, the composite material transmission shaft is manufactured by adopting a fiber or prepreg tape winding process, the end part of the composite material transmission shaft is thickened in the winding process, an included angle of 15-45 degrees is formed between the orientation of the thickened part fiber and the axial direction, and the torsional rigidity of the two ends of the composite material transmission shaft is ensured to be equal to or close to that of the metal flange connection area through measurement and correction.
Preferably, the side surface or the outer peripheral surface of the clamp 3 is provided with a sliding groove 32, the sliding groove 32 extends along the circumferential direction of the clamp 3, the groove width at the groove opening of the sliding groove 32 is smaller than the groove width at the groove bottom of the sliding groove 32, and the counterweight 5 is detachably arranged in the sliding groove 32. Through the setting of spout 32, make balancing weight 5 can slide or dismantle in spout 32, when dynamic balance test and counter weight, convenient operation, labour saving and time saving.
In order to prevent the counterweight 5 from sliding or loosening in the sliding groove 32, in the embodiment of the present invention, the composite material transmission shaft connecting structure further includes a fastening member, the fastening member includes a fixing portion and a connecting portion extending from a bottom side of the fixing portion, the connecting portion is connected with the counterweight 5, the fixing portion is located outside the sliding groove 32, and the bottom side of the fixing portion abuts against an outer edge of a notch of the sliding groove 32, so that the counterweight 5 and the clamp 3 are relatively fixed. Simple structure and convenient processing. During specific balancing, the weight and the relative position of the balancing weight 5 are determined according to the dynamic balance test result of the whole composite material transmission shaft, then the balancing weight is fixed in the chute 32 of the hoop 3 through the fixing piece, and dynamic balance test and balancing weight are repeatedly carried out until the dynamic balance precision required by the composite material transmission shaft is achieved.
Preferably, as shown in fig. 4, in the embodiment of the present invention, at least one end of the sliding groove 32 is formed with an entrance 321, the entrance 321 is used for the counterweight 5 to enter/exit the sliding groove 32 along the groove depth direction of the sliding groove 32, when the dynamic balance test of the area where the sliding groove 32 is located is performed, the counterweight 5 in the sliding groove 32 can be taken out from the entrance 321 without counterweight, and the structure is simple and convenient.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A composite material driveshaft connection structure, comprising:
the first connecting piece, the second connecting piece and the clamp are sleeved from inside to outside in sequence;
the bonding layer is arranged between the first connecting piece and the second connecting piece and used for bonding the outer side wall of the first connecting piece and the inner side wall of the second connecting piece; and the number of the first and second groups,
the clamp is provided with a mounting hole in a penetrating manner, the positions, corresponding to the mounting hole, of the second connecting piece, the first connecting piece and the bonding layer are provided with connecting holes communicated with the mounting hole, and the third connecting piece sequentially penetrates through the mounting hole and the connecting holes so as to enable the first connecting piece, the second connecting piece and the clamp to be connected with each other;
the first connecting piece is one of a flange and a composite material shaft tube, and the second connecting piece is the other of the flange and the composite material shaft tube.
2. The composite driveshaft connection structure according to claim 1, wherein the mounting hole and the connecting hole constitute a plurality of mounting hole groups, and the third connecting member is provided in plurality corresponding to the plurality of mounting hole groups.
3. The composite driveshaft connection structure of claim 1, wherein the third connector comprises a pin.
4. The composite driveshaft connection structure of claim 3, wherein a sidewall of the pin is bonded to a wall of the connection hole; and the side wall of the pin is bonded with the hole wall of the mounting hole.
5. The composite material transmission shaft connecting structure according to claim 1, wherein the outer side wall of the first connecting piece is provided with a stepped portion, so that the outer side wall of the first connecting piece forms a high stepped surface and a low stepped surface, the high stepped surface abuts against the inner side wall of the second connecting piece, the low stepped surface and the inner side wall of the second connecting piece form a glue filling gap at an interval, and the glue filling gap is filled with the adhesive layer.
6. The composite driveshaft connection structure of claim 5, wherein a spacing between the low step surface and an inner sidewall of the second connector is in a range from 0.1mm to 0.2 mm.
7. The composite driveshaft connection structure of claim 1, further comprising a weight disposed on the clamp.
8. The connecting structure of a composite material transmission shaft according to claim 7, wherein a sliding groove is formed in a side surface or an outer peripheral surface of the clamping band, the sliding groove extends in a circumferential direction of the clamping band, a groove width at a groove opening of the sliding groove is smaller than a groove width at a groove bottom of the sliding groove, and the weight block is detachably disposed in the sliding groove.
9. The composite driveshaft connection structure of claim 8, further comprising a fastener, the fastener including a securing portion and a connecting portion extending from a bottom side of the securing portion, the connecting portion being connected to the weight, the securing portion being located outside the channel and the bottom side of the securing portion abutting an outer edge of the slot of the channel to secure the weight relative to the clip.
10. The connecting structure for a composite driveshaft according to claim 8, wherein at least one end of said sliding groove is formed with an inlet for said weight member to enter/exit said sliding groove along a groove depth direction of said sliding groove.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083573.0A CN111288090B (en) | 2020-02-06 | 2020-02-06 | Composite material transmission shaft connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083573.0A CN111288090B (en) | 2020-02-06 | 2020-02-06 | Composite material transmission shaft connecting structure |
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| CN111288090A true CN111288090A (en) | 2020-06-16 |
| CN111288090B CN111288090B (en) | 2022-07-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431866A (en) * | 2020-11-20 | 2021-03-02 | 上海纳铁福传动系统有限公司 | Transmission shaft tube joint structure |
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| CN107504159A (en) * | 2017-08-11 | 2017-12-22 | 安徽江淮汽车集团股份有限公司 | A kind of vehicle transmission axle construction |
| CN110206851A (en) * | 2019-05-03 | 2019-09-06 | 武汉理工大学 | A kind of the dynamic balancing technics method and combined moving balance clip of Carbon Fiber Composite Propeller Shaft pipe |
| CN210101321U (en) * | 2019-05-07 | 2020-02-21 | 宁波万航实业有限公司 | Aluminum alloy transmission shaft assembly with dynamic balance adjusting device |
| CN210531442U (en) * | 2019-06-06 | 2020-05-15 | 吉林大学 | Carbon-fibre composite transmission shaft central siphon joint design |
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2020
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|---|---|---|---|---|
| DE19719641A1 (en) * | 1997-05-09 | 1998-11-12 | Kirschey Centa Antriebe | Power transmission shaft made of fiber-reinforced plastic |
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| CN103072477A (en) * | 2013-02-21 | 2013-05-01 | 合肥工业大学(马鞍山)高新技术研究院 | Heavy truck transmission shaft with rapid dynamic balance calibration structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431866A (en) * | 2020-11-20 | 2021-03-02 | 上海纳铁福传动系统有限公司 | Transmission shaft tube joint structure |
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| Publication number | Publication date |
|---|---|
| CN111288090B (en) | 2022-07-26 |
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