Transmission shaft damper for heavy truck

Abstract

The utility model discloses a transmission shaft damper for a heavy truck, which relates to the technical field of transmission shaft stabilizers and particularly comprises a bearing seat, a transmission shaft is coaxially sleeved with the bearing seat, a bearing cavity is arranged in the bearing seat, a bearing mounted on the transmission shaft is arranged in the bearing cavity, and symmetrical damping supporters are rotatably connected to two sides of the bearing seat respectively. At least one damping supporter is arranged on each side of the bearing seat and is obliquely arranged; the end, away from the bearing seat, of the damping supporting device on each side is rotationally connected to a support, the supports are connected with a strip-shaped plate, and two supports are symmetrically installed on the top of the strip-shaped plate. Compared with the prior art, when the transmission shaft is used and the transmission shaft rotates, the vibration generated by the transmission shaft can be transmitted to each damping supporting device through the bearing seat, the damping supporting devices can eliminate the received vibration, the transmission shaft is prevented from shaking, and the problem that the bearing is aged due to the fact that a rubber pad is used for supporting the bearing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of drive shaft stabilizers, and particularly to a drive shaft damper for heavy trucks. Background Technique

[0002] The truck drive shaft is an important part of the truck transmission system, and its function is to transmit the power of the engine together with the gearbox and the drive axle to the wheels to make the truck generate driving force. It consists of a universal joint, a telescopic sleeve and a shaft sleeve. Among them, the universal joint ensures the change of the angle between the output shaft of the transmission and the input shaft of the drive axle, and realizes the constant angular velocity transmission of the two shafts. The telescopic sleeve can automatically adjust the change of the distance between the transmission and the drive axle to ensure the efficiency and stability of power transmission.

[0003] However, after being installed in the truck, the drive shaft will also vibrate when rotating, because no matter how the new drive shaft is balanced, it cannot be 100% perfectly balanced, but only requires the vibration to be within the specified value range. Moreover, as time goes by, the drive shaft bears large torque and vibration for a long time, which makes it possible for the truck drive shaft to have a deformed torque, making the drive shaft more likely to vibrate;

[0004] And the existing drive shaft stabilizer is as Figure 5 shown, the damping member for supporting the drive shaft is rubber (as Figure 5 indicated by the arrow A in Utility Model Content

[0005] Aiming at the deficiency that the existing damping member for supporting the drive shaft is rubber and the rubber is easy to age, the utility model provides a drive shaft damper for heavy trucks, which supports the bearing seat through a plurality of hydraulic damping rods and support springs, has the advantage of good damping effect, and solves the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model is realized through the following technical solutions: a drive shaft damper for heavy trucks, including a bearing seat coaxially sleeved on the drive shaft, a bearing cavity is provided in the bearing seat, a bearing installed on the drive shaft is provided in the bearing cavity, and symmetric damping supports are respectively rotatably connected to both sides of the bearing seat; the number of damping supports on each side of the bearing seat is at least one and are respectively inclined; one end of each damping support away from the bearing seat is rotatably connected to a support, and the support is connected to a strip-shaped plate, and two brackets are symmetrically installed on the top of the strip-shaped plate.

[0007] Optionally, the bracket includes a support plate installed on the top of the strip-shaped plate, and the top of the support plate is connected to a connecting seat.

[0008] Optionally, the connecting seat is located above the damping support, and the connecting seat and the support are connected by a reinforcing frame.

[0009] Optionally, each damping support includes a hydraulic damping rod. Mounting seats are coaxially provided at both ends of the hydraulic damping rod, and the mounting seats at both ends of the hydraulic damping rod are respectively rotatably connected to the bearing seat and the support; support discs are coaxially provided on the two mounting seats of each hydraulic damping rod, and the hydraulic damping rod is placed inside a support spring, and both ends of the support spring are elastically in contact with the support discs.

[0010] Optionally, one end of the bearing cavity communicates with the outside, and a sealing disc is provided at the opening of the bearing cavity. The sealing disc is coaxially sleeved on the transmission shaft, and the sealing disc is detachably connected to the bearing seat.

[0011] Optionally, sealing rings are coaxially provided in the middle of the ends of the sealing disc and the bearing seat away from each other, and a sealing assembly is provided inside the sealing rings.

[0012] Optionally, a telescopic joint is provided at one end of the transmission shaft.

[0013] Compared with the prior art, when in use of the present utility model, when the transmission shaft rotates, the vibration generated can be transmitted to each damping support through the bearing seat, and the damping support can eliminate the received vibration to prevent the transmission shaft from jittering. Compared with the traditional rubber support bearing method, the method of the hydraulic damping rod and the support spring has a better effect and there will be no problem of aging of the rubber pad for supporting the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model and the transmission shaft.

[0015] Figure 2 is a schematic structural diagram of the front part of the present utility model.

[0016] Figure 3 is a schematic structural diagram of the rear part of the present utility model.

[0017] Figure 4 is a front view of the present utility model.

[0018] Figure 5 is a structural diagram of a traditional transmission shaft stabilizer.

[0019] In the figures: 1, bearing seat; 2, connecting seat; 3, reinforcing frame; 4, support disc; 5, support; 6, hydraulic damping rod; 7, sealing disc; 8, bearing cavity; 9, support spring; 10, strip plate; 11, transmission shaft; 12, telescopic joint; 13, support plate; 14, mounting seat; 15, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a drive shaft damper for a heavy truck, including a bearing seat 1, the bearing seat 1 is coaxially sleeved on the drive shaft 11, a bearing cavity 8 is provided in the bearing seat 1, a bearing installed on the drive shaft 11 is provided in the bearing cavity 8, and the drive shaft 11 can rotate in the bearing seat 1 under the support of the bearing. One end of the bearing cavity 8 is communicated with the outside. During assembly, first place the drive shaft 11 in the bearing seat 1, and then install the bearing in the bearing cavity 8. A sealing disc 7 is provided at the opening of the bearing cavity 8. The sealing disc seals the bearing seat, separating the lubricating oil in the bearing seat from the outside. The sealing disc 7 is coaxially sleeved on the drive shaft 11, and the sealing disc 7 is detachably connected to the bearing seat 1, and the two are specifically fastened by bolts;

[0022] In order to isolate the outside air from contacting the lubricating oil, a sealing ring 15 is coaxially provided in the middle of the ends of the sealing disc 7 and the bearing seat 1 that are away from each other. A sealing component is provided in the sealing ring 15, which is a plurality of sealing rings provided in the sealing ring. Moreover, a groove matching the sealing ring is provided in the sealing ring, and the sealing ring is installed in the groove. In this way, when the drive shaft rotates, the lubricating oil can be sealed in the bearing seat.

[0023] As Figure 5 shown, the length of the truck drive shaft is relatively large. In order to stabilize the drive shaft, a stabilizing frame will be installed on the drive shaft during use. The traditional stabilizing frame is to set a shock-absorbing rubber ring in the frame body (as Figure 5 indicated by the arrow A in Figure 5 ), and then install the bearing on the drive shaft in the shock-absorbing rubber ring (as

[0024] [[ID=XX]]indicated by the arrow B in ), so that the vibration generated by the drive shaft is eliminated by the shock-absorbing rubber ring; Figure 1 and [[ID=XX]] Figure 2 This application changes the traditional way of installing the bearing in the shock-absorbing rubber ring, so that the shock-absorbing rubber ring supporting the bearing is replaced by a damping support. As Figure 1 [[ID=XX]] Figure 2As shown in the figure, symmetric damping supports are respectively provided on both sides of the bearing housing 1. The number of damping supports on each side of the bearing housing 1 is at least one and they are respectively arranged obliquely. The damping supports can be arranged obliquely downward, and of course, they can also be arranged obliquely upward. Each damping support includes a hydraulic damping rod 6. Mounting seats 14 are coaxially provided at both ends of the hydraulic damping rod 6. The mounting seats 14 at both ends of the hydraulic damping rod 6 are respectively rotatably connected to the bearing housing 1 and the support 5. Support discs 4 are coaxially provided on the two mounting seats 14 of each hydraulic damping rod 6. The hydraulic damping rod 6 is placed inside a support spring 9. Both ends of the support spring 9 are elastically in contact with the support discs 4. Under the support of the support spring 9, both hydraulic damping rods 6 are in an extended state;

[0025] As Figure 1 and Figure 2 shown, from the above content, it can be seen that the top of the damping support is rotatably connected to the bearing housing 1, and the ends of the damping supports away from the bearing housing 1 are all rotatably connected to the support 5. Therefore, each damping support can rotate freely. Since the damping supports on both sides extend simultaneously to reach equilibrium, the bearing housing 1 is also supported by the damping supports on both sides and reaches an equilibrium state;

[0026] It should be noted that the support springs 9 here are all large-elasticity springs, which can stably support the transmission shaft. When the transmission shaft rotates, the vibration generated can be transmitted to each damping support through the bearing housing 1. The damping support can eliminate the received vibration and prevent the transmission shaft from shaking. Compared with the traditional rubber support bearing method, the damping support has a better effect and there is no need to worry about the reason of rubber aging for a long time.

[0027] Furthermore, two brackets are symmetrically installed on the top of the strip-shaped plate 10. This bracket is used to connect to the vehicle chassis. The bracket includes a support plate 13 installed on the top of the strip-shaped plate 10. The top of the support plate 13 is connected to the connecting seat 2. When in use, the connecting seat 2 can be fastened to the vehicle chassis with bolts, which is the same as the usage method of the traditional transmission shaft stabilizer;

[0028] In order to further improve the strength of the bracket, as Figure 1 and Figure 3 shown, the connecting seat 2 is located above the damping support, and the connecting seat 2 and the support 5 are connected by a reinforcing frame 3.

[0029] Based on the above embodiments, it can be further optimized. One end of the transmission shaft 11 is provided with a telescopic joint 12. In reality, the telescopic joint 12 is composed of a spline and a spline sleeve. This can enable the transmission shaft to achieve slight telescoping when rotating, so that the stress on the shaft can be released. The importance of setting the telescopic joint lies in that when it is necessary to replace the bearing inside the bearing housing, the transmission shaft can be removed and the telescopic machine can be pulled out.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A drive shaft damper for a heavy-duty truck, comprising a bearing housing (1), the bearing housing (1) being coaxially sleeved on a drive shaft (11), a bearing cavity (8) being provided in the bearing housing (1), and a bearing mounted on the drive shaft (11) being provided in the bearing cavity (8), characterized in that, On both sides of the bearing housing (1), symmetric damping supports are rotatably connected respectively; The number of damping supports on each side of the bearing housing (1) is at least one and they are respectively arranged obliquely; and, One end of each damping support away from the bearing housing (1) is rotatably connected to the support (5), and the support (5) is connected to the strip plate (10), and two supports are symmetrically installed on the top of the strip plate (10).

2. The drive shaft damper for heavy trucks according to claim 1, wherein, The support includes a support plate (13) installed on the top of the strip plate (10), and the top of the support plate (13) is connected to the connecting seat (2).

3. The drive shaft damper for heavy trucks according to claim 2, characterized in that, The connecting seat (2) is located above the damping support, and the connecting seat (2) and the support (5) are connected by a reinforcing frame (3).

4. The drive shaft damper for heavy trucks according to claim 1, characterized in that Each damping support includes a hydraulic damping rod (6), and mounting seats (14) are coaxially arranged at both ends of the hydraulic damping rod (6), and the mounting seats (14) at both ends of the hydraulic damping rod (6) are respectively rotatably connected to the bearing housing (1) and the support (5); Support discs (4) are coaxially arranged on the two mounting seats (14) of each hydraulic damping rod (6), and the hydraulic damping rod (6) is placed in the support spring (9), and both ends of the support spring (9) are elastically in contact with the support discs (4).

5. The drive shaft damper for heavy trucks according to claim 1, characterized in that, One end of the bearing cavity (8) is communicated with the outside, and a sealing disc (7) is provided at the opening of the bearing cavity (8), the sealing disc (7) is coaxially sleeved on the transmission shaft (11), and the sealing disc (7) is detachably connected to the bearing housing (1).

6. The drive shaft damper for heavy trucks according to claim 5, characterized in that, Sealing rings (15) are coaxially arranged in the middle of the ends of the sealing disc (7) and the bearing housing (1) away from each other, and a sealing assembly is arranged in the sealing ring (15).

7. The drive shaft damper for heavy trucks according to claim 6, characterized in that, One end of the transmission shaft (11) is provided with a telescopic joint (12).

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