Vibration and noise reduction chuck transmission structure of diesel engine

Abstract

The utility model provides a vibration and noise reduction chuck transmission structure of a diesel engine, which belongs to the technical field of diesel engines, and comprises a transmission shaft, a chuck and a transmission gear, the end part of the transmission shaft and the end part of the transmission gear are respectively provided with a clamping jaw, the chuck comprises a transmission sheet I and a transmission sheet II, and the outer ring of the transmission sheet I and the outer ring of the transmission sheet II are respectively provided with a notch. A notch of the first transmission piece and a notch of the second transmission piece are matched with a clamping jaw of the transmission gear and a clamping jaw of the transmission shaft respectively. A first mounting hole and a second mounting hole are formed in the middle of the first transmission piece and the middle of the second transmission piece respectively, the chuck further comprises an elastic pin, the elastic pin comprises a pin column, one end of the pin column is connected with the first mounting hole in an inserted mode, the other end of the pin column is connected with the second mounting hole in an inserted mode, and the end, used for being connected with the second mounting hole in an inserted mode, of the pin column is sleeved with an elastic rubber ring. According to the utility model, a structure capable of absorbing energy is provided, the vibration and noise reduction performance is better, and the installation and arrangement space required by the whole structure is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel engines, and in particular relates to a vibration and noise reduction chuck transmission structure for a diesel engine. Background Art

[0002] The gear transmission system of a diesel engine is an important structure of the diesel engine's power transmission. At present, most of the power transmission structures installed on diesel engines use gear transmission structures, and a rigid connection structure is often used to transmit power from the gear to the non-gear connection part. Therefore, there will be a problem that the energy of different loads cannot be released after superposition, which will cause many durability and noise problems of the gear train.

[0003] In order to overcome this problem, the inventors have proposed a diesel engine vibration and noise reduction chuck transmission device, which mainly includes a transmission shaft, a chuck, and a transmission gear. The chuck includes a first connecting plate and a second connecting plate connected to the transmission shaft and the transmission gear respectively, and a rubber damping plate connected between the first connecting plate and the second connecting plate. The transmission shaft and the transmission gear are both provided with claws, and the first connecting plate, the second connecting plate and the rubber damping plate are all provided with grooves corresponding to the claws on the transmission shaft and the transmission gear, and the power output connection from the gear to the non-gear connection part is realized through the above structure.

[0004] However, in actual application, there is still room for improvement in the above-mentioned diesel engine vibration and noise reduction chuck transmission device: the chuck structure composed of the first connecting plate, the rubber damping plate and the second connecting plate is limited by the injection process during the actual production and processing, and has problems such as low precision and poor product consistency. In addition, the presence of the rubber damping plate will increase the axial length of the entire transmission device and the required installation space. Utility Model Content

[0005] The technical problem solved by the utility model is to propose a better diesel engine vibration and noise reduction chuck transmission structure, and enable it to have better vibration and noise reduction effects, as well as better product consistency and precision while reducing the required installation and layout space.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a diesel engine vibration and noise reduction chuck transmission structure, which includes a transmission shaft, a chuck and a transmission gear, the end of the transmission shaft and the end of the transmission gear are both provided with claws, the chuck includes a transmission plate 1 and a transmission plate 2, the outer ring of the transmission plate 1 and the outer ring of the transmission plate 2 are both provided with notches, the notch of the transmission plate 1 cooperates with the claw of the transmission gear, and the notch of the transmission plate 2 cooperates with the claw of the transmission shaft; the middle part of the transmission plate 1 and the middle part of the transmission plate 2 are respectively provided with a mounting hole 1 and a mounting hole 2, the chuck also includes an elastic pin, the elastic pin includes a pin column, one end of the pin column is plugged into the mounting hole 1, the other end of the pin column is plugged into the mounting hole 2, and an elastic rubber ring is sleeved on the end of the pin column used for plugging into the mounting hole 2. At this time, since the utility model adopts an elastic pin structure instead of a structure for pasting rubber damping sheets, the utility model can have a structure for absorbing energy while having better product precision and improving product consistency compared to an injected rubber structure, and reducing the installation and layout space required for the entire structure.

[0007] Furthermore, the notch of the first transmission plate and the notch of the second transmission plate are staggered.

[0008] Furthermore, the misalignment angle between the notch of the transmission plate 1 and the notch of the transmission plate 2 is 1°-1.5°, so as to ensure that there is a sufficient angle to produce buffering and to ensure that no additional speed fluctuation is generated due to excessive transmission angle.

[0009] Furthermore, a center protrusion is provided in the middle of the side of the transmission plate 1 close to the transmission plate 2, and a center groove is provided in the middle of the side of the transmission plate 2 close to the transmission plate 1. The center groove is plugged into the center protrusion, so as to improve the product precision and consistency through the cooperation of the center protrusion and the center groove.

[0010] Furthermore, there is a clearance fit between the side walls of the central protrusion and the groove walls of the central groove.

[0011] Furthermore, the outer ring of the transmission plate 1 is evenly provided with two notches, and the outer ring of the transmission plate 2 is also evenly provided with two notches.

[0012] Furthermore, four elastic pins are evenly arranged between the transmission plate 1 and the transmission plate 2, and the energy of the transmission system is absorbed by the elastic pin structure, thereby greatly reducing the system noise.

[0013] Furthermore, the thickness of the transmission plate 1 is greater than the thickness of the transmission plate 2.

[0014] Furthermore, the material of the transmission plate 1 is iron, and it has the advantages of easy electrical and thermal conductivity, high hardness, and not easy to deform.

[0015] Furthermore, the material of the transmission plate 2 is iron, and it has the advantages of easy electrical and thermal conductivity, high hardness, and not easy to deform.

[0016] It can be seen from the above technical solutions that the utility model has the following advantages:

[0017] 1. Compared with the injected rubber structure, the utility model has better product precision, can improve product consistency, and reduce the installation and layout space required for the entire structure;

[0018] 2. The utility model can convert gear transmission into non-gear transmission, that is, convert the gear transmission torque into other types of transmission;

[0019] 3. The utility model greatly enhances the maintainability and replaceability of the transmission structure by connecting multiple parts, while reducing internal stress and improving the reliability of the system;

[0020] 4. The transmission gear and the transmission shaft in the utility model are connected by a chuck, and the tangential limit transmission force is adopted, which can also reduce the stress generated in other directions and avoid the large installation space required by traditional bolt connections;

[0021] 5. The utility model combines the misalignment angle and the elastic pin structure to absorb the torque fluctuation in the system, thereby reducing the noise of the system and improving the reliability of the system;

[0022] 6. The utility model also improves product accuracy and consistency through the cooperation of the center protrusion and the center groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The structure of the specific implementation method of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure of the specific implementation method of the utility model is shown in FIG. Figure 2 ;

[0026] Figure 3 It is an exploded schematic diagram of the chuck in the utility model;

[0027] Figure 4 It is a structural schematic diagram of the elastic pin in the utility model.

[0028] In the figure: 1, transmission gear; 2, chuck; 3, transmission shaft; 201, transmission plate 1; 202, elastic pin; 203, transmission plate 2; 202-1, elastic rubber ring; 202-2, pin. 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 in 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] like Figures 1 to 4 As shown, the utility model provides a vibration and noise reduction chuck transmission structure for diesel engines, which includes a coaxially distributed transmission shaft 3, a chuck 2, and a transmission gear 1. Among them, the ends of the transmission shaft 3 and the ends of the transmission gear 1 are both provided with two claws, the chuck 2 includes a transmission plate 1 201 and a transmission plate 2 203, and an elastic pin 202, and the utility model is provided with two notches on the outer ring of the transmission plate 1 201 and the outer ring of the transmission plate 2 203, and the notch of the transmission plate 1 201 is matched with the claw of the transmission gear 1, and the notch of the transmission plate 2 203 is matched with the claw of the transmission shaft 3; a central protrusion is provided in the middle of one side of the transmission plate 1 201 close to the transmission plate 2 203, and a central groove is provided in the middle of one side of the transmission plate 2 203 close to the transmission plate 1 201, and the central groove is plugged with the central protrusion, and the side wall of the central protrusion and the groove wall of the central groove are gap-matched, so that the product precision and consistency are improved through the cooperation of the central protrusion and the central groove.

[0031] In addition, the utility model also provides a mounting hole 1 and a mounting hole 2 in the middle of the transmission plate 1 201 and the middle of the transmission plate 2 203, respectively, and four elastic pins 202 are installed at the corresponding four groups of mounting holes, one mounting hole 2. Specifically, the elastic pin 202 includes a pin 202-2, one end of the pin 202-2 is plugged into the mounting hole 1, and the other end of the pin 202-2 is plugged into the mounting hole 2, and an elastic rubber ring 202-1 that can absorb the energy of the transmission system and greatly reduce the system noise is sleeved on the end of the pin 202-2 that is used to be plugged into the mounting hole 2.

[0032] Moreover, as a preference, the transmission plate 1 201 in the present invention adopts an iron plate with a larger thickness, and the transmission plate 203 adopts an iron plate with a smaller thickness; at the same time, when the transmission plate 1 201 and the transmission plate 203 are assembled together through the elastic pin 202, the notch of the transmission plate 1 201 and the notch of the transmission plate 203 are staggered, and the staggered angle is preferably set to 1°-1.5°, so as to ensure that there is enough angle to produce buffering, and to ensure that no additional speed fluctuation is generated due to excessive transmission angle.

[0033] Based on this, the diesel engine vibration and noise reduction chuck 2 transmission structure provided by the utility model can not only convert gear transmission into non-gear transmission, that is, convert gear transmission torque into other types of transmission, but also reduce the stress generated in other directions in the process, and avoid the large installation space required for traditional bolt connections, reduce the noise of the system, and improve the reliability of the system, product accuracy and consistency.

[0034] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A diesel engine vibration and noise reduction chuck transmission structure, comprising a transmission shaft, a chuck and a transmission gear, the ends of the transmission shaft and the ends of the transmission gear are both provided with claws, the chuck comprises a transmission plate 1 and a transmission plate 2, the outer rings of the transmission plate 1 and the outer rings of the transmission plate 2 are both provided with notches, the notches of the transmission plate 1 cooperate with the claws of the transmission gear, and the notches of the transmission plate 2 cooperate with the claws of the transmission shaft; characterized in that: The middle part of the transmission plate 1 and the middle part of the transmission plate 2 are respectively provided with mounting hole 1 and mounting hole 2. The chuck also includes an elastic pin. The elastic pin includes a pin column. One end of the pin column is plugged into the mounting hole 1, and the other end of the pin column is plugged into the mounting hole 2. An elastic rubber ring is sleeved on the end of the pin column used for plugging into the mounting hole 2.

2. The diesel engine vibration and noise reduction chuck transmission structure according to claim 1 is characterized in that: The notch of the first transmission plate and the notch of the second transmission plate are staggered.

3. The diesel engine vibration and noise reduction chuck transmission structure according to claim 2 is characterized in that: The misalignment angle between the notch of the first transmission plate and the notch of the second transmission plate is 1°-1.5°.

4. The diesel engine vibration and noise reduction chuck transmission structure according to claim 1 is characterized in that: A central protrusion is arranged in the middle of one side of the transmission plate 1 close to the transmission plate 2, and a central groove is arranged in the middle of one side of the transmission plate 2 close to the transmission plate 1, and the central groove is plugged with the central protrusion.

5. The diesel engine vibration and noise reduction chuck transmission structure according to claim 4 is characterized in that: The side walls of the central protrusion and the groove walls of the central groove are clearance-matched.

6. The diesel engine vibration and noise reduction chuck transmission structure according to any one of claims 1 to 5, characterized in that: The outer ring of the transmission plate 1 is evenly provided with two notches, and the outer ring of the transmission plate 2 is also evenly provided with two notches.

7. The diesel engine vibration and noise reduction chuck transmission structure according to any one of claims 1 to 5, characterized in that: Four elastic pins are evenly arranged between the transmission plate 1 and the transmission plate 2.

8. The diesel engine vibration and noise reduction chuck transmission structure according to any one of claims 1 to 5, characterized in that: The thickness of the transmission plate 1 is greater than the thickness of the transmission plate 2.

9. The diesel engine vibration and noise reduction chuck transmission structure according to any one of claims 1 to 5, characterized in that: The material of the transmission sheet 1 is iron.

10. The diesel engine vibration and noise reduction chuck transmission structure according to any one of claims 1 to 5, characterized in that: The material of the transmission plate 2 is iron.

Images