A type of automotive mandrel

Abstract

This utility model relates to the field of mandrel technology and proposes an automotive mandrel, including a shaft body. Fixing rings are fitted on both sides of the shaft body, and each fixing ring has a vibration damping component at its bottom end to reduce vibration of the shaft body. Support rods are fixedly connected to both sides of the shaft body, and the top of each support rod has evenly spaced fixing grooves. Support sleeves are fitted on the outer sides of each support rod, and the top of each support sleeve has a fixing component for adjusting the overall length. A fixing block is fixedly connected to the end of the support sleeve furthest from the shaft body, and a movable block is rotatably connected to one end of the fixing block. In this utility model, the fixing components and fixing grooves cooperate to fix the support rods and support sleeves, keeping the entire shaft body stable and achieving the purpose of adjusting the length of the entire shaft body. This solves the problem that existing mandrels are inconvenient for length adjustment based on tolerances between connecting parts.

Description

Technical Field

[0001] This utility model relates to the field of mandrel technology, specifically to a vehicle mandrel. Background Technology

[0002] A mandrel is a mechanical shaft mainly used to support transmission parts. Its core function is to transmit torque and ensure the stable operation of the mechanical system. The mandrel is mainly used to bear lateral loads and prevent the transmission parts (such as gears, bearings, etc.) from bending and deforming by supporting them, thereby ensuring the normal operation of the mechanical system.

[0003] A search revealed that CN210126395U describes a commercial vehicle chassis mandrel, comprising an internal cooling device and an external cooling device. The internal cooling device includes a cooling cavity located at the mandrel's axis, containing a heat dissipation component. The cooling cavity is connected to a fastening cavity, and the heat dissipation component is connected to fasteners. A spiral-shaped internal cooling channel is formed within the heat dissipation component and fasteners, with partition plates spaced apart within the internal cooling channel. The external cooling device includes two cooling oil tanks, each located at one end of the mandrel. The heat dissipation component extends through the mandrel and into the cooling oil tanks. An external cooling channel connects the two cooling oil tanks. This design enables cooling of the mandrel and allows for adjustment of the cooling effect based on vehicle speed, ensuring sufficient cooling capacity at different speeds.

[0004] However, the aforementioned mandrel still has the following problems: the length of the mandrel cannot be adjusted according to the tolerance between the connecting bodies during use, making it inconvenient to accurately install and fix the mandrel. Furthermore, the mandrel is inconvenient to handle the vibration transmitted in the frame during use, thus affecting the service life of the mandrel. Utility Model Content

[0005] This utility model proposes a vehicle mandrel that solves the problems of inconvenient length adjustment and inconvenient vibration damping of the mandrel.

[0006] The technical solution of this utility model is as follows: A vehicle mandrel includes a shaft body, with fixing rings fitted on both sides of the shaft body. The bottom end of each fixing ring is provided with a vibration damping component that can reduce vibration of the shaft body. Support rods are fixedly connected to both sides of the shaft body. The top end of each support rod is provided with fixing grooves arranged at equal intervals. Support sleeves are fitted on the outer side of each support rod. The top end of each support sleeve is provided with a fixing component that can adjust the overall length. A fixing block is fixedly connected to the end of the support sleeve away from the shaft body, and a movable block is rotatably connected to one end of the fixing block.

[0007] The fixing component includes a fixing sleeve, which is fixedly connected to one side of the top of the support sleeve. An adjusting rod is vertically slidably connected inside the fixing sleeve. A limit baffle is fixedly connected to the bottom end of the adjusting rod. A fixing rod is fixedly connected to the bottom end of the limit baffle. The bottom of the fixing rod is slidably connected inside the fixing groove.

[0008] Preferably, a first spring is fixedly connected to the top of the limiting baffle, and the top of the first spring is fixedly connected to the inner top wall of the fixing sleeve.

[0009] Preferably, the vibration damping component includes a buffer rod, the top end of which is fixedly connected to the bottom of a fixed ring, a shock-absorbing sleeve is fitted onto the bottom of the buffer rod, a movable baffle is slidably connected to the top of the inner wall of the shock-absorbing sleeve, and the bottom end of the buffer rod is fixedly connected to the movable baffle.

[0010] Preferably, a damper is fixedly connected to the inner bottom wall of the shock-absorbing sleeve, and a second spring is fixedly connected to the top of the damper. The top of the second spring is fixedly connected to the movable baffle.

[0011] Preferably, the support sleeve has a guide groove inside, a limit block is slidably connected inside the guide groove, and one end of the support rod is inserted inside the guide groove and fixedly connected to the limit block.

[0012] Preferably, a fixing plate is fixedly connected to the side of the movable block away from the fixed block, and fixing holes are provided at all four corners of the fixing plate.

[0013] Preferably, the bottom end of each shock absorber sleeve is fixedly connected to a fixing plate, and each of the four corners of the fixing plate is provided with threaded holes.

[0014] The beneficial effects of this utility model are as follows:

[0015] In this invention, by pulling the support sleeves on both sides to slide on the outside of the support rod, the fixed plate comes into contact with the connecting bodies on both sides. Then, by cooperating between the fixing component and the fixing groove, the support rod and the support sleeve can be fixed, so that the entire shaft remains stable. This achieves the purpose of adjusting the length of the entire shaft and solves the problem that the existing mandrel is inconvenient to adjust the length according to the tolerance between the connecting bodies.

[0016] In this invention, the fixing plate and threaded hole can stably install the whole in the designated position of the frame, and the vibration damping component can process the vibration transmitted from the frame to the axle, blocking the path of the vibration source to the axle, thus protecting the axle and preventing it from being affected by vibration and reducing its service life. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the support sleeve proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the fixing component structure proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the vibration damping component structure proposed in this utility model;

[0022] In the diagram: 1. Shaft; 2. Fixing ring; 3. Support rod; 4. Support sleeve; 5. Fixing groove; 6. Fixing block; 7. Movable block; 8. Fixing assembly; 81. Fixing sleeve; 82. Adjusting rod; 83. First spring; 84. Limiting baffle; 85. Fixing rod; 9. Vibration damping assembly; 91. Vibration damping sleeve; 92. Damper; 93. Second spring; 94. Movable baffle; 95. Buffer rod; 10. Fixing disc; 11. Fixing hole; 12. Fixing plate; 13. Threaded hole; 14. Guide groove; 15. Limiting block. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figure 1 This utility model provides a technical solution for an automotive mandrel: an automotive mandrel includes a shaft body 1, with fixing rings 2 fitted on both sides of the shaft body 1, and vibration damping components 9 provided at the bottom of the fixing rings 2 to reduce vibration of the shaft body 1. Support rods 3 are fixedly connected to both sides of the shaft body 1, and fixing grooves 5 are evenly arranged at the top of the support rods 3. Support sleeves 4 are fitted on the outer side of the support rods 3, and fixing components 8 that can adjust the overall length are provided at the top of the support sleeves 4. A fixing block 6 is fixedly connected to the end of the support sleeve 4 away from the shaft body 1, and a movable block 7 is rotatably connected to one end of the fixing block 6. A fixing plate 10 is fixedly connected to the side of the movable block 7 away from the fixing block 6, and fixing holes 11 are provided at the four corners of the fixing plate 10.

[0025] Please see Figure 2The support sleeve 4 has a guide groove 14 inside, and a limit block 15 is slidably connected inside the guide groove 14. One end of the support rod 3 is inserted inside the guide groove 14 and fixedly connected to the limit block 15.

[0026] Please see Figure 3 The fixing component 8 includes a fixing sleeve 81, which is fixedly connected to one side of the top of the support sleeve 4. An adjusting rod 82 is vertically slidably connected inside the fixing sleeve 81. A limit baffle 84 is fixedly connected to the bottom end of the adjusting rod 82. A fixing rod 85 is fixedly connected to the bottom end of the limit baffle 84. The bottom of the fixing rod 85 is slidably connected inside the fixing groove 5. A first spring 83 is fixedly connected to the top end of the limit baffle 84. The top end of the first spring 83 is fixedly connected to the inner top wall of the fixing sleeve 81. By pushing the limit baffle 84 downward by the first spring 83, the fixing rod 85 can be moved downward, so that the bottom of the fixing rod 85 is inserted into the inside of the fixing groove 5. This allows for adjustment and fixation between the support sleeve 4 and the support rod 3, facilitating the adjustment of the length of the entire shaft 1.

[0027] Please see Figure 4 The vibration damping assembly 9 includes a buffer rod 95, the top end of which is fixedly connected to the bottom of the fixed ring 2. A damping sleeve 91 is fitted onto the bottom of the buffer rod 95. A movable baffle 94 is slidably connected to the top of the inner wall of the damping sleeve 91. The bottom end of the buffer rod 95 is fixedly connected to the movable baffle 94. A damper 92 is fixedly connected to the inner bottom wall of the damping sleeve 91. A second spring 93 is fixedly connected to the top end of the damper 92. The top end of the second spring 93 is fixedly connected to the movable baffle 94. A fixing plate 12 is fixedly connected to the bottom end of the damping sleeve 91. Threaded holes 13 are provided at the four corners of the fixing plate 12. Through the action of the fixing plate 12 and the threaded holes 13, the entire assembly can be stably installed at a designated position on the frame. Furthermore, through the combined action of the second spring 93 and the damper 92, the vibration energy transmitted to the axle 1 can be absorbed, reducing the impact of vibration on the axle 1.

[0028] The working principle and usage process of this utility model are as follows: Place the fixing plate 12 at the designated position on the frame, align the threaded hole 13 with the mounting hole on the frame, and insert bolts into the threaded hole 13 to connect and fix it with the mounting hole on the frame. Then, pull the support sleeve 4 to slide it on the outside of the support rod 3, so that the fixing plate 10 aligns with the connecting body on both ends of the frame, and install and fix it with bolts inside the fixing hole 11. During the process of pulling the support sleeve 4, the fixing rod 85 aligns with the fixing groove 5 opened on the support rod 3. The first spring 83 pushes the limiting baffle 84 downward to move, so that the fixing rod 85 is inserted into the fixing groove 5, which can fix the support sleeve 4 and the support rod 3, making it convenient to adjust the overall length of the shaft 1. The second spring 93 and the buffer rod 95 can support the shaft 1. The damper 92 and the second spring 93 work together to absorb and dissipate the vibration energy transmitted to the shaft 1, reducing the impact of vibration on the entire shaft 1.

[0029] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A mandrel for vehicle wheels comprising a shaft body (1), characterised in that, Both sides of the shaft (1) are fitted with fixing rings (2), and the bottom of the fixing rings (2) is provided with a vibration damping component (9) that can reduce the vibration of the shaft (1). Both sides of the shaft (1) are fixedly connected with support rods (3). The top of the support rods (3) is provided with fixing grooves (5) arranged at equal intervals. The outer side of the support rods (3) is fitted with support sleeves (4). The top of the support sleeves (4) is provided with a fixing component (8) that can adjust the overall length. The end of the support sleeve (4) away from the shaft (1) is fixedly connected with a fixing block (6), and the end of the fixing block (6) is rotatably connected with a movable block (7). The fixing component (8) includes a fixing sleeve (81), which is fixedly connected to one side of the top of the support sleeve (4). An adjusting rod (82) is vertically slidably connected inside the fixing sleeve (81). A limiting baffle (84) is fixedly connected to the bottom end of the adjusting rod (82). A fixing rod (85) is fixedly connected to the bottom end of the limiting baffle (84). The bottom of the fixing rod (85) is slidably connected inside the fixing groove (5).

2. The mandrel of claim 1 wherein, The top end of the limiting baffle (84) is fixedly connected to a first spring (83), and the top end of the first spring (83) is fixedly connected to the inner top wall of the fixing sleeve (81).

3. The mandrel of claim 1 wherein, The vibration damping component (9) includes a buffer rod (95), the top end of which is fixedly connected to the bottom of the fixed ring (2), and a shock-absorbing sleeve (91) is fitted on the bottom of the buffer rod (95). A movable baffle (94) is slidably connected to the top of the inner wall of the shock-absorbing sleeve (91), and the bottom end of the buffer rod (95) is fixedly connected to the movable baffle (94).

4. The mandrel of claim 3 wherein, The inner bottom wall of the shock-absorbing sleeve (91) is fixedly connected to a damper (92), and the top end of the damper (92) is fixedly connected to a second spring (93). The top end of the second spring (93) is fixedly connected to a movable baffle (94).

5. The mandrel of claim 1 wherein, The support sleeve (4) has a guide groove (14) inside, and a limit block (15) is slidably connected inside the guide groove (14). One end of the support rod (3) is inserted inside the guide groove (14) and fixedly connected to the limit block (15).

6. The mandrel of claim 1 wherein, The movable block (7) is fixedly connected to a fixed plate (10) on the side away from the fixed block (6), and the fixed plate (10) has a fixing hole (11) at each of its four corners.

7. The mandrel of claim 3 wherein, The bottom end of each shock-absorbing sleeve (91) is fixedly connected to a fixing plate (12), and each of the four corners of the fixing plate (12) is provided with a threaded hole (13).

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