CN215762888U

CN215762888U - Symmetrical combined automobile transmission shaft

Info

Publication number: CN215762888U
Application number: CN202121906913.1U
Authority: CN
Inventors: 莫建平; 王海君; 朱艳昭
Original assignee: Tianjin Guangjinggong Precision Machinery Co ltd
Current assignee: Tianjin Guangjinggong Precision Machinery Co ltd
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-02-08
Anticipated expiration: 2031-08-16

Abstract

The embodiment of the utility model discloses a symmetrical combined automobile transmission shaft, which belongs to the technical field of transmission shafts and comprises a transmission shaft pipe, wherein an oil sealing cover is arranged at the top of the transmission shaft pipe, a sliding spline shaft is arranged at the top of the oil sealing cover, a telescopic sleeve is arranged at the top of the sliding spline shaft, universal joint forks are arranged at the top of the telescopic sleeve and the bottom of the transmission shaft pipe respectively, a connecting shaft is arranged at the top of the universal joint forks, a damping mechanism is arranged at the outer side of the transmission shaft pipe, and the damping mechanism comprises a fixed sleeve. According to the utility model, the damping mechanism is arranged, the damping cotton is used for carrying out first heavy damping, the damping spring is used for forming second heavy damping, the connecting spring is compressed due to vibration, the elastic force of the connecting spring can be buffered by the sliding block sliding in the sliding groove, the protection degree of the transmission shaft is improved, the transmission shaft can be prevented from being damaged due to long-time vibration in the using process, and the service life of the transmission shaft is prolonged.

Description

Symmetrical combined automobile transmission shaft

Technical Field

The embodiment of the utility model relates to the technical field of transmission shafts, in particular to a symmetrical combined automobile transmission shaft.

Background

The propeller shaft is a shaft capable of transmitting power among propeller shafts of a universal transmission. It is a high speed, less supported rotating body, so its dynamic balance is crucial. The dynamic balance test is carried out on a general transmission shaft before leaving a factory, and the transmission shaft is adjusted on a balancing machine. The front engine and rear wheel driven vehicle has several sections of shaft for transmitting the rotation of the speed variator to the main speed reducer, and the sections may be connected via universal joints.

Most of transmission shafts on the existing market are structurally fixed and can only play the due effect of the transmission shafts and the effect generally, but in the use process of the transmission shafts, the movement of an automobile can cause the internal parts of the transmission shafts to vibrate, so that the transmission shafts are easily damaged, and the service life of the transmission shafts is greatly reduced.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a symmetrical combined automobile transmission shaft, wherein a damping mechanism is arranged, damping cotton is used for carrying out first heavy damping, damping springs are used for forming second heavy damping, the elastic force of the connecting springs can be buffered by sliding of a sliding block in a sliding groove through compression of the connecting springs caused by vibration, so that the problems that in the prior art, the transmission shaft on the market can only play the function and the effect which the transmission shaft should have usually, but in the use process of the transmission shaft, parts in the transmission shaft are vibrated due to the movement of an automobile, so that the transmission shaft is easy to damage, and the service life of the transmission shaft is greatly shortened are solved.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a symmetrical combined automobile transmission shaft comprises a transmission shaft tube, wherein an oil sealing cover is arranged at the top of the transmission shaft tube, a sliding spline shaft is arranged at the top of the oil sealing cover, a telescopic sleeve is arranged at the top of the sliding spline shaft, universal joint forks are arranged at the top of the telescopic sleeve and the bottom of the transmission shaft tube respectively, a connecting shaft is arranged at the top of the universal joint forks, and a damping mechanism is arranged outside the transmission shaft tube;

damper includes fixed cover, be provided with the shock attenuation cotton between fixed cover and the transmission shaft pipe, the cotton bottom of shock attenuation is provided with damping spring, fixed cover inner wall side surface is provided with the spout, the spout surface is provided with the slider, slider one side is provided with the slide bar, slide bar one side is provided with first connecting block, first connecting block one side is provided with connecting spring, connecting spring one side is provided with the second connecting block.

Further, the fixed sleeve is arranged on the outer side of the transmission shaft tube, the second connecting block is arranged on the outer side of the transmission shaft tube, a movable tube is arranged between the sliding spline shaft and the universal joint, and a movable sleeve is arranged between the universal joint and the connecting shaft.

Further, the quantity of damping spring, connecting spring, first connecting block and second connecting block all sets up to a plurality ofly.

Further, slider and spout sliding connection, the quantity of universal joint fork and connecting axle all sets up to two.

Furthermore, one side of the damping spring is fixedly connected with one side of the inner wall of the fixed sleeve, and the other side of the damping spring is fixedly connected with one side of the outer wall of the transmission shaft pipe.

Further, the transmission shaft pipe outside is provided with the sound insulation cover, the sound insulation cover is by interior toward including first puigging, protective layer and second puigging outward in proper order.

Further, the first soundproof layer is made of a foamed metal material, the second soundproof layer is made of a rubber material, and the protective layer is made of a ductile iron material.

Further, the surface of the outer side of the sound insulation sleeve is provided with a plurality of silencing holes.

The embodiment of the utility model has the following advantages:

1. by arranging the damping mechanism, the damping cotton between the transmission shaft tube and the fixed sleeve is used for carrying out the first heavy damping, the shock absorption spring is compressed by the vibration, the elastic force generated by the resilience of the spring and the force generated by the vibration are mutually offset, thereby forming the second shock absorption, the connection spring is compressed by the vibration, so that the elastic force of the compression and rebound of the connecting spring drives the first connecting block to move, the elastic force of the connecting spring can be buffered by the sliding block sliding in the sliding groove, thereby achieving the effect of multi-buffering and damping the transmission shaft pipe, preventing the transmission shaft pipe from being damaged due to vibration, greatly improving the damping effect of the transmission shaft when in use compared with the prior art, meanwhile, the protection degree of the transmission shaft is improved, the transmission shaft can be prevented from being damaged due to long-time vibration in the using process, and the service life of the transmission shaft is prolonged.

2. The noise that produces whole transmission shaft is kept apart through inside first puigging of sound-proof housing and second puigging through the sound-proof housing and is absorbed, the fastness that improves the sound-proof housing through the protective layer that sets up nodular cast iron material, the protective layer by the making of nodular cast iron material can absorb partial noise simultaneously, the effect of further making an uproar also can be played through the bloop on the sound-proof housing, can reduce noise pollution, further improve driver's experience, prevent that the noise from influencing the driver.

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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the specific structure of the fixing sleeve and the sound-proof sleeve of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 4 is a schematic view of the internal structure of the acoustical sleeve of the present invention;

in the figure: 1. a driveshaft tube; 2. sealing the oil cover; 3. a silencing hole; 4. a sliding spline shaft; 5. a telescopic sleeve; 6. a universal joint yoke; 7. a connecting shaft; 8. fixing a sleeve; 9. damping cotton; 10. a damping spring; 11. a chute; 12. a slider; 13. a slide bar; 14. a first connection block; 15. a connecting spring; 16. a second connecting block; 17. a sound insulation sleeve; 18. a first sound insulating layer; 19. a protective layer; 20. a second sound insulating layer; 21. a movable tube; 22. a movable sleeve.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. 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.

Referring to the attached figures 1-4 of the specification, a symmetrical combined automobile transmission shaft comprises a transmission shaft tube 1, wherein an oil sealing cover 2 is arranged at the top of the transmission shaft tube 1, a sliding spline shaft 4 is arranged at the top of the oil sealing cover 2, a telescopic sleeve 5 is arranged at the top of the sliding spline shaft 4, universal joint forks 6 are arranged at the top of the telescopic sleeve 5 and the bottom of the transmission shaft tube 1, a connecting shaft 7 is arranged at the top of the universal joint forks 6, and a damping mechanism is arranged on the outer side of the transmission shaft tube 1.

Damper includes fixed cover 8, be provided with the shock attenuation cotton 9 between fixed cover 8 and the transmission central siphon 1, the cotton 9 bottom of shock attenuation is provided with damping spring 10, fixed 8 inner wall side surface of cover is provided with spout 11, spout 11 surfaces are provided with slider 12, slider 12 one side is provided with slide bar 13, slide bar 13 one side is provided with first connecting block 14, first connecting block 14 one side is provided with connecting spring 15, connecting spring 15 one side is provided with second connecting block 16.

As shown in fig. 1 and 2, the fixing sleeve 8 is disposed outside the transmission shaft tube 1, the second connecting block 16 is disposed outside the transmission shaft tube 1, the movable tube 21 is disposed between the sliding spline shaft 4 and the universal joint 6, the movable sleeve 22 is disposed between the universal joint 6 and the connecting shaft 7, and the fixing sleeve 8 can reduce the vibration of the internal parts of the transmission shaft tube 1.

As shown in fig. 1 and 3, the number of the damping springs 10, the number of the connecting springs 15, the number of the first connecting blocks 14 and the number of the second connecting blocks 16 are all set to be multiple, the damping effect can be improved through the damping springs 10, the connecting springs 15, the first connecting blocks 14 and the second connecting blocks 16, and the counteracting effect of the force generated by vibration is enhanced.

As shown in fig. 3, the sliding block 12 is slidably connected to the sliding groove 11, the number of the universal joint yoke 6 and the number of the connecting shaft 7 are two, and the elastic force of the connecting spring 15 can be consumed by the friction force of the sliding block 12 moving on the surface of the sliding groove 11, so that the damping effect is achieved.

As shown in fig. 1 and 3, one side of the damping spring 10 is fixedly connected with one side of the inner wall of the fixing sleeve 8, the other side of the damping spring 10 is fixedly connected with one side of the outer wall of the transmission shaft tube 1, and the vibration of the transmission shaft part is further reduced by the damping spring 10.

Referring to the attached drawings 1-4 in the specification, a sound insulation sleeve 17 is arranged on the outer side of the transmission shaft tube 1, and the sound insulation sleeve 17 sequentially comprises a first sound insulation layer 18, a protective layer 19 and a second sound insulation layer 20 from inside to outside.

As shown in fig. 4, the first soundproof layer 18 is made of a foamed metal material, the second soundproof layer 20 is made of a rubber material, and the protective layer 19 is made of a ductile cast iron material, so that diaphragm sound and sound absorption can be performed by the first soundproof layer 18 and the second soundproof layer 20, and the firmness of the soundproof cover 17 is improved by the protective layer 19.

As shown in fig. 2 and 4, the sound deadening holes 3 are formed in the outer surface of the sound insulation sleeve 17, and the number of the sound deadening holes 3 is set to be plural, so that noise reduction processing is further performed on generated noise.

The application process of the embodiment of the utility model is as follows: when the utility model is used for damping, the transmission shaft tube 1 can generate vibration, so that the damping cotton 9 between the transmission shaft tube 1 and the fixed sleeve 8 can perform first heavy damping, meanwhile, the vibration can drive the damping spring 10 on one side of the transmission shaft tube 1 to compress, the elastic force generated by the rebound of the damping spring 10 can be counteracted with the force generated by the vibration, so as to form second heavy damping, the vibration can compress the connecting spring 15 on one side of the vibration through the second connecting block 16, meanwhile, the slide block 12 on one side of the slide rod 13 on the first connecting block 14 slides on the slide groove 11 on one side of the inner wall of the fixed sleeve 8, so that the elastic force generated by the compression and rebound of the connecting spring 15 drives the first connecting block 14 to move, the elastic force of the connecting spring 15 can be buffered through the slide block 12 sliding in the slide groove 11, the connecting spring 15 can convert the self-vibration force into self-rebound force, and meanwhile, the sliding friction force between the slide block 12 and the slide groove 11 can counteract the self-rebound force of the connecting spring 15, thereby carry out the triple shock attenuation, further improve the shock attenuation effect, thereby reach and carry out multiple buffering absorbing effect to transmission shaft pipe 1, can prevent that transmission shaft pipe 1 from damaging because of vibrations, when carrying out the noise elimination to the transmission shaft, keep apart the absorption to the noise that whole transmission shaft produced through first puigging 18 and the second puigging 20 of sound insulation cover 17 inside, improve sound insulation cover 17's fastness through setting up protective layer 19 afterwards, protective layer 19 that the nodular cast iron material made can absorb partial noise simultaneously, a plurality of bloops 3 on sound insulation cover 17 surface also can play the effect of further making an uproar simultaneously.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

Claims

1. The utility model provides a symmetry formula combination car transmission shaft, includes transmission shaft pipe (1), its characterized in that: an oil seal cover (2) is arranged at the top of the transmission shaft tube (1), a sliding spline shaft (4) is arranged at the top of the oil seal cover (2), a telescopic sleeve (5) is arranged at the top of the sliding spline shaft (4), universal joint forks (6) are arranged at the top of the telescopic sleeve (5) and the bottom of the transmission shaft tube (1), a connecting shaft (7) is arranged at the top of each universal joint fork (6), and a damping mechanism is arranged at the outer side of the transmission shaft tube (1);

damper includes fixed cover (8), be provided with between fixed cover (8) and transmission shaft pipe (1) shock attenuation cotton (9), shock attenuation cotton (9) bottom is provided with damping spring (10), fixed cover (8) inner wall side surface is provided with spout (11), spout (11) surface is provided with slider (12), slider (12) one side is provided with slide bar (13), slide bar (13) one side is provided with first connecting block (14), first connecting block (14) one side is provided with coupling spring (15), coupling spring (15) one side is provided with second connecting block (16).

2. A symmetrical combination automotive propeller shaft according to claim 1, wherein: fixed cover (8) set up in the driving shaft pipe (1) outside, second connecting block (16) set up in the driving shaft pipe (1) outside, be provided with between slip spline shaft (4) and universal fork joint (6) movable tube (21), be provided with movable sleeve (22) between universal fork joint (6) and connecting axle (7).

3. A symmetrical combination automotive propeller shaft according to claim 1, wherein: the number of the damping springs (10), the number of the connecting springs (15), the number of the first connecting blocks (14) and the number of the second connecting blocks (16) are all set to be multiple.

4. A symmetrical combination automotive propeller shaft according to claim 1, wherein: slider (12) and spout (11) sliding connection, the quantity of universal joint fork (6) and connecting axle (7) all sets up to two.

5. A symmetrical combination automotive propeller shaft according to claim 1, wherein: damping spring (10) one side and fixed cover (8) inner wall one side fixed connection, damping spring (10) opposite side and transmission shaft pipe (1) outer wall one side fixed connection.

6. A symmetrical combination automotive propeller shaft according to claim 1, wherein: the transmission shaft pipe (1) outside is provided with sound insulation cover (17), sound insulation cover (17) by interior toward including first puigging (18), protective layer (19) and second puigging (20) outward in proper order.

7. The symmetrical combination automotive propeller shaft of claim 6, wherein: the first sound-insulating layer (18) is made of a foamed metal material, the second sound-insulating layer (20) is made of a rubber material, and the protective layer (19) is made of a ductile iron material.

8. The symmetrical combination automotive propeller shaft of claim 6, wherein: the sound insulation sleeve (17) is characterized in that silencing holes (3) are formed in the outer side surface of the sound insulation sleeve (17), and the number of the silencing holes (3) is set to be multiple.