Torque transmission shaft

Abstract

The utility model relates to the technical field of transmission shafts, and particularly discloses a torque transmission shaft which comprises a hollow shaft body, an air outlet pipe communicated with the interior of the shaft body is arranged on the shaft body, a sealing portion is arranged in the middle of the air outlet pipe, a valve is arranged in the sealing portion, and a sealing ring is arranged on the sealing portion. Cross-shaped rods which are evenly distributed are fixedly installed in the shaft body, the ends of the cross-shaped rods are fixedly installed on the inner wall of the shaft body, four sets of sound insulation strips are arranged in the shaft body, the sound insulation strips are evenly distributed, the sound insulation strips are arranged on the cross-shaped rods respectively, and pressing and holding pieces are arranged on the cross-shaped rods. The pressing and holding piece comprises symmetrical mounting openings formed in the top end and the bottom end of the cross-shaped rod, springs arranged in the mounting openings and limiting blocks arranged on the mounting openings in a sliding mode, and the torque transmission shaft has good sound absorption and sound insulation performance, can effectively reduce the noise level in a vehicle when an axle runs, and improves the driving comfort.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission shafts, and in particular relates to a torque transmission shaft. Background Art

[0002] The torque transmission shaft is a key component in the mechanical transmission system, mainly used to transmit torque and rotational power. It can withstand a large amount of torque and ensure the accuracy and reliability during the transmission process. It is widely used in many fields such as automobiles, agricultural machinery, and mechanical manufacturing equipment.

[0003] The existing torque transmission shaft technology has certain limitations in terms of sound absorption and sound insulation performance. The main limitation is that during vehicle driving, the vibration and noise generated by the operation of the transmission shaft are often difficult to be effectively isolated and absorbed, resulting in a high noise level in the vehicle, which in turn affects driving comfort. This noise not only comes from the vibration of the transmission shaft itself, but may also be further amplified and propagated through other components connected to it (such as bearings, couplings, etc.), becoming an important factor affecting the acoustic environment in the vehicle. Improvements are needed. To this end, a torque transmission shaft is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a torque transmission shaft with good sound absorption and sound insulation performance, which can effectively reduce the noise level in the vehicle when the axle is running and improve the driving comfort.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a torque transmission shaft, including a shaft body, the shaft body is configured to be hollow, the shaft body is provided with an outlet pipe connected to the interior of the shaft body, a sealing portion is provided in the middle of the outlet pipe, a valve is provided in the sealing portion, evenly distributed cross rods are fixedly installed in the shaft body, the ends of the cross rods are fixedly installed on the inner wall of the shaft body, sound insulation strips are provided in the shaft body, the sound insulation strips are provided in four groups evenly distributed, and the sound insulation strips are respectively provided on the cross rods.

[0006] As a further description of the above scheme: by arranging the coordination between the shaft body, the exhaust pipe, the sealing part, the valve, the cross rod and the sound insulation strip, the noise level inside the vehicle can be effectively reduced when the axle is running, thereby improving driving comfort.

[0007] Preferably, a holding piece is provided on the cross rod, and the holding piece comprises mounting openings symmetrically provided at the top and bottom ends of the cross rod, a spring arranged in the mounting opening, and a limit block slidably arranged on the mounting opening.

[0008] As a further description of the above solution: providing a holding piece can improve the stability of the sound insulation strip, reduce the vibration of the sound insulation strip when the shaft body is running, and further improve the sound absorption and sound insulation effects.

[0009] Preferably, both ends of the spring are fixedly mounted on the cross rod and the limit block respectively, and the spring is pressed between the cross rod and the limit block, and the ends of the limit block are pressed on the sides of the sound insulation strip respectively.

[0010] As a further description of the above solution: the positional relationship of the components within the limiting member is described.

[0011] Preferably, a cross bar is provided in the middle of the shaft body, and the middle of the cross bar is fixedly mounted to the cross bar.

[0012] As a further description of the above solution: providing a cross bar can further improve the rigidity of the cross bar supporting the shaft body.

[0013] Preferably, the shaft, cross bar and cross bar are all made of carbon fiber composite materials.

[0014] As a further description of the above solution: Carbon fiber composite materials not only have high strength but also low density, which helps to reduce the weight of the shaft.

[0015] Preferably, the air outlet pipe is clamped on the shaft.

[0016] As a further description of the above solution: the air outlet pipe can be easily replaced.

[0017] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In the utility model, by arranging the coordination between the shaft body, the air outlet pipe, the sealing part, the valve, the cross rod and the sound insulation strip, the noise level inside the vehicle can be effectively reduced when the axle is running, thereby improving driving comfort.

[0019] 2. In the utility model, by setting the cooperation between the installation port, the spring and the limit block, the stability of the sound insulation strip in the shaft body can be improved, the vibration of the sound insulation strip when the shaft body is running can be reduced, and the sound absorption and sound insulation effects can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the shaft body of the utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the shaft end of the utility model;

[0023] Figure 4 This is a structural diagram of the shaft body before the sound insulation strip of the utility model is installed;

[0024] Figure 5This is a structural diagram of the crossbar and crossbar of the utility model;

[0025] Figure 6 This is a front view cross-sectional structural diagram of the cross bar of the utility model;

[0026] Figure 7 This is a front view cross-sectional structural diagram of the sealing portion of the present utility model.

[0027] Legend:

[0028] 1. Shaft; 2. Exhaust pipe; 3. Sealing part; 4. Valve; 5. Cross rod; 6. Sound insulation strip; 7. Holding piece; 71. Mounting port; 72. Spring; 73. Limit block; 8. Cross rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-7 , the utility model provides a technical solution:

[0031] A torque transmission shaft comprises a shaft body 1, wherein the shaft body 1 is configured to be hollow, an air outlet pipe 2 connected to the interior of the shaft body 1 is provided on the shaft body 1, a sealing portion 3 is provided in the middle of the air outlet pipe 2, a valve 4 is provided in the sealing portion 3, evenly distributed cross rods 5 are fixedly installed in the shaft body 1, the ends of the cross rods 5 are fixedly installed on the inner wall of the shaft body 1, sound insulation strips 6 are provided in the shaft body 1, and the sound insulation strips 6 are provided in four evenly distributed groups, and the sound insulation strips 6 are respectively provided on the cross rods 5.

[0032] The shaft body 1 is designed to be hollow and is equipped with an air outlet pipe 2 connected to the inside of the shaft body 1. A vacuum device is used to extract the air in the shaft body 1 and the shaft body 1 is evacuated into a vacuum state. A valve 4 is built into the sealing part 3 in the middle of the air outlet pipe 2, which can play a sealing role without affecting the outward flow of gas to prevent gas from entering the shaft body 1. The vacuum shaft body 1 can effectively prevent noise conduction.

[0033] The cross rods 5 evenly distributed in the shaft body 1 not only enhance the structural strength of the shaft body 1, but also provide support for the installation of the sound insulation strips 6. Since sound is transmitted through the vibration of the medium, even in a hollow environment, the vibration of the transmission shaft itself can still transmit vibration and sound through the parts in contact with the shaft body 1, such as connecting parts, supporting parts, etc. The setting of the sound insulation strips 6 effectively blocks the propagation path of the sound in the shaft body 1;

[0034] The torque transmission shaft has good sound absorption and sound insulation properties, which can effectively reduce the noise level inside the vehicle when the axle is running and improve driving comfort.

[0035] A holding member 7 is provided on the cross bar 5, and the holding member 7 includes a mounting opening 71 symmetrically provided at the top and bottom ends of the cross bar 5, a spring 72 provided in the mounting opening 71, and a limit block 73 slidably provided on the mounting opening 71, the two ends of the spring 72 are respectively fixedly installed with the cross bar 5 and the limit block 73, and the spring 72 is pressed between the cross bar 5 and the limit block 73, and the ends of the limit block 73 are respectively pressed on the sides of the sound insulation strip 6;

[0036] Through the pressing force of the spring 72 in the installation port 71 on the limit block 73, each limit block 73 is tightly pressed against the side of the sound insulation strip 6, thereby improving the stability of the sound insulation strip 6 in the shaft body 1 and reducing the vibration of the sound insulation strip 6 when the shaft body 1 is running, thereby further improving the sound absorption and sound insulation effects.

[0037] A cross bar 8 is arranged in the middle of the shaft body 1, and the middle of the cross bar 5 is fixedly mounted to the cross bar 8;

[0038] The cross bar 8 arranged in the middle of the shaft body 1 is fixedly installed with the middle of the cross bar 5, which further strengthens the overall structure of the shaft body 1 and improves the torsional strength and stability of the shaft body 1. The addition of the cross bar 8 makes the shaft body 1 more stable when bearing torque, reduces the additional noise generated by structural deformation, helps to maintain the sound insulation effect, and enhances the driving experience.

[0039] The shaft body 1, the cross bar 8 and the cross bar 5 are all made of carbon fiber composite materials;

[0040] The shaft body 1, the cross bar 8 and the cross bar 5 are all made of carbon fiber composite materials, which have the characteristics of high strength, light weight and corrosion resistance. It not only reduces the weight of the shaft body 1 and improves the energy efficiency of the vehicle, but also helps to reduce the vibration of the shaft body 1 due to its excellent damping performance, thereby indirectly reducing the generation of noise and further enhancing the sound absorption and sound insulation capabilities of the drive shaft.

[0041] The air outlet pipe 2 is clamped and arranged on the shaft body 1;

[0042] The air outlet pipe 2 is arranged on the shaft body 1 by means of a clamping method. This installation method not only ensures a tight connection between the air outlet pipe 2 and the shaft body 1, but also facilitates subsequent maintenance and replacement.

[0043] Working principle:

[0044] The shaft body 1 is designed to be hollow and is equipped with an air outlet pipe 2 connected to the inside of the shaft body 1. A vacuum device is used to extract the air in the shaft body 1 and the shaft body 1 is evacuated into a vacuum state. A valve 4 is built into the sealing part 3 in the middle of the air outlet pipe 2, which can play a sealing role without affecting the outward flow of gas to prevent gas from entering the shaft body 1. The vacuum shaft body 1 can effectively prevent noise conduction.

[0045] The cross rods 5 evenly distributed in the shaft body 1 not only enhance the structural strength of the shaft body 1, but also provide support for the installation of the sound insulation strips 6. Since sound is transmitted through the vibration of the medium, even in a hollow environment, the vibration of the transmission shaft itself can still transmit vibration and sound through the parts in contact with the shaft body 1, such as connecting parts, supporting parts, etc. The setting of the sound insulation strips 6 effectively blocks the propagation path of the sound in the shaft body 1;

[0046] The spring 72 in the mounting opening 71 exerts a pressing force on the limit block 73, so that each limit block 73 is tightly pressed against the side of the sound insulation strip 6, thereby improving the stability of the sound insulation strip 6 in the shaft body 1 and reducing the vibration of the sound insulation strip 6 when the shaft body 1 is running, thereby further improving the sound absorption and sound insulation effects;

[0047] The cross bar 8 arranged in the middle of the shaft body 1 is fixedly installed with the middle of the cross bar 5, which further strengthens the overall structure of the shaft body 1 and improves the torsional strength and stability of the shaft body 1. The addition of the cross bar 8 makes the shaft body 1 more stable when bearing torque, reduces the additional noise caused by structural deformation, helps maintain the sound insulation effect, and improves the driving experience;

[0048] The shaft body 1, the cross bar 8 and the cross bar 5 are all made of carbon fiber composite materials, which have the characteristics of high strength, light weight and corrosion resistance. It not only reduces the weight of the shaft body 1 and improves the energy efficiency of the vehicle, but also helps to reduce the vibration of the shaft body 1 due to its excellent damping performance, thereby indirectly reducing the generation of noise and further enhancing the sound absorption and sound insulation capabilities of the transmission shaft;

[0049] The torque transmission shaft has good sound absorption and sound insulation properties, which can effectively reduce the noise level inside the vehicle when the axle is running and improve driving comfort.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A torque transmission shaft, comprising a shaft body (1), characterized in that: The shaft body (1) is configured to be hollow, an air outlet pipe (2) connected to the interior of the shaft body (1) is provided on the shaft body (1), a sealing portion (3) is provided in the middle of the air outlet pipe (2), a valve (4) is provided in the sealing portion (3), evenly distributed cross rods (5) are fixedly installed in the shaft body (1), the ends of the cross rods (5) are fixedly installed on the inner wall of the shaft body (1), sound insulation strips (6) are provided in the shaft body (1), and the sound insulation strips (6) are provided in four evenly distributed groups, and the sound insulation strips (6) are respectively arranged on the cross rods (5).

2. A torque transmission shaft according to claim 1, characterized in that: The cross rod (5) is provided with a holding piece (7), and the holding piece (7) comprises a mounting opening (71) symmetrically provided at the top and bottom ends of the cross rod (5), a spring (72) arranged in the mounting opening (71), and a limit block (73) slidably arranged on the mounting opening (71).

3. A torque transmission shaft according to claim 2, characterized in that: The two ends of the spring (72) are respectively fixedly mounted on the cross rod (5) and the limit block (73), and the spring (72) is pressed between the cross rod (5) and the limit block (73), and the ends of the limit block (73) are respectively pressed on the sides of the sound insulation strip (6).

4. A torque transmission shaft according to claim 1, characterized in that: A cross bar (8) is provided in the middle of the shaft body (1), and the middle of the cross bar (5) is fixedly mounted to the cross bar (8).

5. A torque transmission shaft according to claim 4, characterized in that: The shaft body (1), the cross bar (8) and the cross bar (5) are all made of carbon fiber composite materials.

6. The torque transmission shaft according to claim 1, characterized in that: The air outlet pipe (2) is clamped and arranged on the shaft body (1).

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