Transmission shaft vibration reduction device

Abstract

The utility model discloses a transmission shaft shock absorbing device, which relates to the technical field of transmission shaft shock absorbing, and comprises a first connecting rod, a connecting seat and a shock absorbing assembly, wherein one end of the first connecting rod is slidably connected to the second connecting rod, the ends of the first connecting rod and the second connecting rod are fixedly installed with a universal joint for connecting the transmission, the connecting seat is fixedly installed at one end of the first connecting rod away from the universal joint, and the end of the first connecting rod away from the universal joint is provided with an outer sleeve. The utility model can increase the sliding fit of the first connecting rod and the second connecting rod through the provision of the outer sleeve, and can also isolate and seal the connecting ends of the first connecting rod and the second connecting rod, thereby protecting the connecting ends of the first connecting rod and the second connecting rod. In addition, during the operation of the device, the shock absorbing assembly can reduce the vibration and abnormal sound generated by the first connecting rod and the second connecting rod during the operation, and further increase the stability of the device during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shaft vibration reduction, in particular to a transmission shaft vibration reduction device. Background Art

[0002] The drive shaft is mainly composed of a shaft tube, a telescopic sleeve and a universal joint. The telescopic sleeve can automatically adjust the change in the distance between the transmission and the drive axle to adapt to different driving conditions. The universal joint ensures the change in the angle between the transmission output shaft and the drive axle input shaft, and realizes the equal angular speed transmission of the two shafts. The universal joint is a key component on the drive shaft. Its structure is complex but its function is powerful. The current drive shaft may have problems during operation including bending deformation, imbalance, balancing sheet falling off and universal joint wear, etc. These problems may cause the drive shaft to run unsteadily and produce vibration and abnormal noise. Therefore, it is necessary to provide a drive shaft shock absorber to solve the above technical problems. Utility Model Content

[0003] The purpose of the utility model is to provide a transmission shaft damping device to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A transmission shaft shock absorber device comprises a first connecting rod, a connecting seat and a shock absorber assembly, one end of the first connecting rod is slidably connected to the second connecting rod, the ends of the first connecting rod and the second connecting rod are fixedly installed with universal joints for connecting transmission, the connecting seat is fixedly installed at the end of the first connecting rod away from the universal joint, the end of the first connecting rod away from the universal joint is provided with an outer sleeve, and the outer sleeve is fixedly connected to the outer wall of the first connecting rod, one end of the outer sleeve extends to the outer wall of the second connecting rod and is slidably connected to the outer wall of the second connecting rod, the outer wall of the second connecting rod is provided with a matching groove that is slidably matched with the outer sleeve, the shock absorber assembly is fixedly installed at the end of the first connecting rod away from the universal joint, and the end of the shock absorber assembly away from the first connecting rod is fixedly connected to one end of the second connecting rod.

[0006] The above-mentioned technical scheme is adopted. In this scheme, the first connecting rod and the second connecting rod are plugged in and matched, and the ends of the first connecting rod and the second connecting rod are rotatably connected with universal joints. The first connecting rod and the second connecting rod are connected to external parts through universal joints. In order to increase the connection fit between the first connecting rod and the second connecting rod, an outer sleeve for sliding fit with the second connecting rod is installed on the outside of the first connecting rod. The setting of the outer sleeve can increase the sliding fit between the first connecting rod and the second connecting rod, and can also isolate and seal the connecting ends of the first connecting rod and the second connecting rod, thereby protecting the connecting ends of the first connecting rod and the second connecting rod. In addition, during the operation of the device, the shock absorbing assembly can reduce the vibration and abnormal noise generated by the first connecting rod and the second connecting rod during operation, thereby further increasing the stability of the device during operation.

[0007] A further improvement of the technical solution of the utility model is that: the inner ring of the end of the outer sleeve away from the first connecting rod is provided with a convex ring which is slidably matched with the matching groove.

[0008] By adopting the above technical solution, the end convex ring of the outer sleeve in this solution can increase the sliding stability of the outer sleeve and the outer ring of the second connecting rod, and further increase the fit between the two.

[0009] A further improvement of the technical solution of the utility model is that the shock absorbing assembly includes a plug-in rod, which is fixedly installed on a side of the connecting seat away from the first connecting rod, four matching rods are fixedly installed equidistantly inside the second connecting rod, the inner circle of the plug-in rod is provided with a plug-in hole for plugging with the matching rod, auxiliary springs are installed inside the plug-in holes, a mounting rod is fixedly installed inside the second connecting rod, a piston is fixedly installed on one end of the mounting rod away from the second connecting rod, and the piston is slidably connected to the inside of the plug-in rod.

[0010] The above-mentioned technical scheme is adopted. When the device starts to run, the first connecting rod and the second connecting rod will be displaced toward each other. At this time, the first connecting rod will drive the plug-in rod to move in the direction of the matching rod, and the plug-in holes opened in the inner circle of the plug-in rod are equipped with auxiliary springs. As the plug-in rod continues to move, the matching rod will compress the auxiliary springs, thereby buffering the first connecting rod and the second connecting rod, thereby reducing the vibration between the first connecting rod and the second connecting rod. In addition, while the first connecting rod and the second connecting rod move toward each other, the mounting rod will cooperate with the piston to slide inside the plug-in rod. As the piston slides, the hydraulic oil inside the plug-in rod will be compressed, further increasing the buffering and shock absorption performance of the device.

[0011] A further improvement of the technical solution of the utility model is that the plug-in rod is arranged in a square shape, and grooves are arranged at equal intervals on the outer wall of the plug-in rod.

[0012] By adopting the above technical solution, the groove on the outer wall of the plug-in rod in this solution can reduce the production cost of the plug-in rod and reduce the weight of the plug-in rod. In addition, it can increase the contact area between the plug-in rod and the second connecting rod, increase the plug-in fit between the second connecting rod and the plug-in rod, and further increase the stability of the device.

[0013] A further improvement of the technical solution of the utility model is that the mounting rod is arranged in a square shape.

[0014] By adopting the above technical solution, the square-shaped mounting rod in this solution can increase the degree of plug-in fit between the mounting rod and the plug-in rod, so that the mounting rod maintains linear displacement, further increasing the overall operating stability of the device.

[0015] A further improvement of the technical solution of the utility model is that a cylindrical groove which is slidably matched with the piston is provided inside the plug-in rod.

[0016] By adopting the above technical solution, the cylindrical groove arranged inside the plug-in rod in this solution can increase the sliding stability of the piston inside the plug-in rod.

[0017] A further improvement of the technical solution of the utility model is that a special-shaped groove which is plugged and matched with the plug-in rod is provided inside the second connecting rod.

[0018] By adopting the above technical solution, the special-shaped groove inside the second connecting rod in this solution can increase the plug-in fit between the second connecting rod and the plug-in rod, increase the stability of the device during operation, and further ensure that the device can operate stably.

[0019] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0020] The utility model provides a transmission shaft shock absorbing device, wherein a first connecting rod and a second connecting rod are connected to external parts through a universal joint, and in order to increase the connection fit between the first connecting rod and the second connecting rod, an outer sleeve for slidingly fitting with the second connecting rod is installed on the outside of the first connecting rod, and the setting of the outer sleeve can increase the sliding fit between the first connecting rod and the second connecting rod, and can also isolate and seal the connecting ends of the first connecting rod and the second connecting rod, thereby protecting the connecting ends of the first connecting rod and the second connecting rod. In addition, during the operation of the device, the shock absorbing assembly can reduce the vibration and abnormal noise generated by the first connecting rod and the second connecting rod during operation, thereby further increasing the stability of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1This is a structural schematic diagram of the overall device of the utility model from a first viewing angle;

[0023] Figure 2 This is a schematic structural diagram of the overall device of the utility model from a second viewing angle;

[0024] Figure 3 This is a half-section structural diagram of the overall device of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the utility model from a partially half-sectioned first viewing angle;

[0026] Figure 5 It is a structural schematic diagram of the utility model from a second viewing angle of a partial half section;

[0027] In the figure: 1. first connecting rod; 2. second connecting rod; 3. universal joint; 4. connecting seat; 5. outer sleeve; 6. matching groove; 7. plug-in rod; 8. matching rod; 9. plug-in hole; 10. auxiliary spring; 11. mounting rod; 12. piston. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the embodiments:

[0029] Example 1

[0030] like Figure 1-Figure 5 As shown, the utility model provides a transmission shaft shock absorbing device, a first connecting rod 1, a connecting seat 4 and a shock absorbing assembly, one end of the first connecting rod 1 is slidably connected to the second connecting rod 2, the ends of the first connecting rod 1 and the second connecting rod 2 are fixedly installed with a universal joint 3 for connecting transmission, the connecting seat 4 is fixedly installed at the end of the first connecting rod 1 away from the universal joint 3, the end of the first connecting rod 1 away from the universal joint 3 is provided with an outer sleeve 5, and the outer sleeve 5 is fixedly connected to the outer wall of the first connecting rod 1, one end of the outer sleeve 5 extends to the outer wall of the second connecting rod 2, and is slidably connected to the outer wall of the second connecting rod 2, the outer wall of the second connecting rod 2 is provided with a matching groove 6 that slidably matches with the outer sleeve 5, the shock absorbing assembly is fixedly installed at the end of the first connecting rod 1 away from the universal joint 3, and the end of the shock absorbing assembly away from the first connecting rod 1 is fixedly connected to one end of the second connecting rod 2.

[0031] In this embodiment, in this scheme, the first connecting rod 1 and the second connecting rod 2 are plugged into each other, and the ends of the first connecting rod 1 and the second connecting rod 2 are rotatably connected with the universal joint 3. The first connecting rod 1 and the second connecting rod 2 are connected to external parts through the universal joint 3. In order to increase the connection fit between the first connecting rod 1 and the second connecting rod 2, an outer sleeve 5 for sliding fit with the second connecting rod 2 is installed on the outside of the first connecting rod 1. The setting of the outer sleeve 5 can increase the sliding fit between the first connecting rod 1 and the second connecting rod 2, and can also isolate and seal the connecting ends of the first connecting rod 1 and the second connecting rod 2, thereby protecting the connecting ends of the first connecting rod 1 and the second connecting rod 2. In addition, during the operation of the device, the shock absorbing assembly can reduce the vibration and abnormal noise generated by the first connecting rod 1 and the second connecting rod 2 during operation, thereby further increasing the stability of the device during operation.

[0032] Example 2

[0033] like Figure 1-Figure 5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the inner ring of the end of the outer sleeve 5 away from the first connecting rod 1 is provided with a convex ring that slidably cooperates with the matching groove 6.

[0034] In this embodiment, the end convex ring of the outer sleeve 5 can increase the sliding stability of the outer sleeve 5 and the outer ring of the second connecting rod 2, and further increase the fit between the two.

[0035] Example 3

[0036] like Figure 1-Figure 5 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the shock absorbing assembly includes a plug-in rod 7, the plug-in rod 7 is fixedly installed on the side of the connecting seat 4 away from the first connecting rod 1, four matching rods 8 are fixedly installed equidistantly inside the second connecting rod 2, the inner circle of the plug-in rod 7 is provided with a plug-in hole 9 which is plugged with the matching rod 8, and the inside of the plug-in hole 9 is installed with an auxiliary spring 10, the inside of the second connecting rod 2 is fixedly installed with a mounting rod 11, the end of the mounting rod 11 away from the second connecting rod 2 is fixedly installed with a piston 12, and the piston 12 is slidably connected to the inside of the plug-in rod 7.

[0037] In this embodiment, when the device starts to run, the first connecting rod 1 and the second connecting rod 2 will be displaced toward each other. At this time, the first connecting rod 1 will drive the plug-in rod 7 to move in the direction of the matching rod 8, and the plug-in hole 9 opened in the inner circle of the plug-in rod 7 is provided with an auxiliary spring 10. As the plug-in rod 7 continues to move, the matching rod 8 will compress the auxiliary spring 10, thereby achieving buffering of the first connecting rod 1 and the second connecting rod 2, thereby reducing the vibration between the first connecting rod 1 and the second connecting rod 2. In addition, while the first connecting rod 1 and the second connecting rod 2 move toward each other, the mounting rod 11 will cooperate with the piston 12 to slide inside the plug-in rod 7. As the piston 12 slides, the hydraulic oil inside the plug-in rod 7 will be compressed, further increasing the buffering and shock absorbing performance of the device.

[0038] like Figure 1-Figure 5 As shown, preferably, the plug-in rod 7 is arranged in a square shape, and grooves are arranged at equal intervals on the outer wall of the plug-in rod 7.

[0039] In this embodiment, the groove on the outer wall of the plug rod 7 can reduce the production cost of the plug rod 7 and reduce the weight of the plug rod 7. In addition, it can increase the contact area between the plug rod 7 and the second connecting rod 2, increase the plug-in fit between the second connecting rod 2 and the plug rod 7, and further increase the stability of the device.

[0040] like Figure 1-Figure 5 As shown, preferably, the mounting rod 11 is arranged in a square shape.

[0041] In this embodiment, the square-shaped mounting rod 11 can increase the degree of plug-in fit between the mounting rod 11 and the plug-in rod 7, so that the mounting rod 11 maintains linear displacement, further increasing the overall operational stability of the device.

[0042] Example 4

[0043] like Figure 1-Figure 5 As shown, based on Example 1, the utility model provides a technical solution: preferably, a cylindrical groove that slides with the piston 12 is provided inside the plug rod 7.

[0044] In this embodiment, the cylindrical groove provided inside the plug-in rod 7 can increase the sliding stability of the piston 12 inside the plug-in rod 7 .

[0045] like Figure 1-Figure 5 As shown, preferably, a special-shaped groove for plugging and cooperating with the plug-in rod 7 is provided inside the second connecting rod 2 .

[0046] In this embodiment, the special-shaped groove inside the second connecting rod 2 can increase the plug-in fit between the second connecting rod 2 and the plug-in rod 7, increase the stability of the device during operation, and further ensure that the device can operate stably.

[0047] The working principle of the transmission shaft shock absorbing device is described in detail below.

[0048] like Figure 1-Figure 5 As shown, the first connecting rod 1 and the second connecting rod 2 are plugged in and fitted with each other, and the ends of the first connecting rod 1 and the second connecting rod 2 are rotatably connected with a universal joint 3. The first connecting rod 1 and the second connecting rod 2 are connected to external parts through the universal joint 3. In order to increase the connection fit between the first connecting rod 1 and the second connecting rod 2, an outer sleeve 5 for sliding fit with the second connecting rod 2 is installed on the outside of the first connecting rod 1. The setting of the outer sleeve 5 can increase the sliding fit between the first connecting rod 1 and the second connecting rod 2, and can also isolate and seal the connecting ends of the first connecting rod 1 and the second connecting rod 2, thereby protecting the connecting ends of the first connecting rod 1 and the second connecting rod 2. In addition, during the operation of the device, the shock absorbing assembly can reduce the first connecting rod 1 and the second connecting rod 2. When vibration and abnormal noise are generated during operation, the first connecting rod 1 and the second connecting rod 2 will be displaced toward each other. At this time, the first connecting rod 1 will drive the plug-in rod 7 to move in the direction of the matching rod 8, and the plug-in hole 9 opened in the inner circle of the plug-in rod 7 is provided with an auxiliary spring 10. As the plug-in rod 7 continues to move, the matching rod 8 will compress the auxiliary spring 10, thereby buffering the first connecting rod 1 and the second connecting rod 2, thereby reducing the vibration between the first connecting rod 1 and the second connecting rod 2. In addition, while the first connecting rod 1 and the second connecting rod 2 move toward each other, the mounting rod 11 will cooperate with the piston 12 to slide inside the plug-in rod 7. As the piston 12 slides, the hydraulic oil inside the plug-in rod 7 will be compressed, further increasing the buffering and shock absorption performance of the device.

[0049] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A transmission shaft damping device, characterized in that: include: A first connecting rod (1), one end of the first connecting rod (1) being slidably connected to a second connecting rod (2), and ends of the first connecting rod (1) and the second connecting rod (2) being fixedly mounted with a universal joint (3) for connecting transmission; A connecting seat (4), the connecting seat (4) being fixedly mounted on one end of the first connecting rod (1) away from the universal joint (3), an outer sleeve (5) being provided on the one end of the first connecting rod (1) away from the universal joint (3), and the outer sleeve (5) being fixedly connected to the outer wall of the first connecting rod (1), one end of the outer sleeve (5) extending to the outer wall of the second connecting rod (2) and being slidably connected to the outer wall of the second connecting rod (2), and a matching groove (6) being slidably matched with the outer sleeve (5) being provided on the outer wall of the second connecting rod (2); A shock absorbing assembly is fixedly mounted on an end of the first connecting rod (1) away from the universal joint (3), and the end of the shock absorbing assembly away from the first connecting rod (1) is fixedly connected to an end of the second connecting rod (2).

2. A transmission shaft damping device according to claim 1, characterized in that: The inner ring of one end of the outer sleeve (5) away from the first connecting rod (1) is provided with a convex ring that slidably cooperates with the matching groove (6).

3. A transmission shaft damping device according to claim 2, characterized in that: The shock absorbing assembly comprises a plug-in rod (7), wherein the plug-in rod (7) is fixedly mounted on a side of the connecting seat (4) away from the first connecting rod (1), four matching rods (8) are fixedly mounted at equal intervals inside the second connecting rod (2), the inner ring of the plug-in rod (7) is provided with a plug-in hole (9) for plugging and matching with the matching rod (8), and auxiliary springs (10) are installed inside the plug-in holes (9), and a mounting rod (11) is fixedly mounted inside the second connecting rod (2), and a piston (12) is fixedly mounted on one end of the mounting rod (11) away from the second connecting rod (2), and the piston (12) is slidably connected inside the plug-in rod (7).

4. A transmission shaft damping device according to claim 3, characterized in that: The plug-in rod (7) is arranged in a square shape, and grooves are arranged at equal intervals on the outer wall of the plug-in rod (7).

5. A transmission shaft damping device according to claim 4, characterized in that: The mounting rod (11) is arranged in a square shape.

6. A transmission shaft damping device according to claim 5, characterized in that: The plug-in rod (7) is provided with a cylindrical groove inside which the piston (12) is slidably matched.

7. A transmission shaft damping device according to claim 6, characterized in that: The second connecting rod (2) is provided with a special-shaped groove inside for plugging and cooperating with the plug-in rod (7).

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