Pipe string connection mechanism and vehicle

Abstract

The application discloses a kind of column connecting mechanism and vehicle.The column connecting mechanism is used for vehicle.The column connecting mechanism includes sliding guide rail mechanism and pre-tightening adjusting mechanism.The sliding guide rail mechanism is used to connect the column of vehicle and frame, so that the column can be moved relative to the frame to be telescopic adjusted.The pre-tightening adjusting mechanism includes nut, guide rod and spring, the spring is sleeved on the guide rod, and the two sides of the spring are respectively supported by the sliding guide rail mechanism and the guide rod, the nut and the guide rod connect the frame, the nut can drive the guide rod to move relative to the frame to adjust the pressure of the spring on the sliding guide rail mechanism.In this way, the column and the frame can be connected by the sliding guide rail mechanism to ensure that the column can move smoothly relative to the frame.Meanwhile, the pre-tightening force on the sliding guide rail mechanism can be changed by adjusting the nut, and the friction can be reduced, the efficiency of motor adjustment can be improved, and the energy consumption of motor can be reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a column connection mechanism and a vehicle. Background Technology

[0002] In related technologies, during the adjustment of the vehicle's column, the friction between the column and the bracket is sliding friction, which has a large frictional force. As the grease deteriorates and is consumed, the frictional force will increase, generating noise and affecting the feel during adjustment. It will also affect the driving capability of the motor. Summary of the Invention

[0003] This application provides a column connection mechanism and a vehicle.

[0004] The column connection mechanism of this application is used in a vehicle, and the column connection mechanism includes:

[0005] A sliding guide mechanism is used to connect the vehicle's column and frame, so that the column can move relative to the frame and thus be extended and retracted.

[0006] The preload adjustment mechanism includes a nut, a guide rod, and a spring. The spring is sleeved on the guide rod, and both sides of the spring abut against the sliding guide rail mechanism and the guide rod, respectively. The nut and the guide rod are connected to the vehicle frame. The nut can drive the guide rod to move relative to the vehicle frame to adjust the pressure of the spring on the sliding guide rail mechanism.

[0007] In the column connection mechanism of this application embodiment, the column and the frame can be connected by a sliding guide rail mechanism to ensure smooth movement of the column relative to the frame. Simultaneously, the preload on the sliding guide rail mechanism can be changed by adjusting the nut, thereby reducing friction, improving motor adjustment efficiency, and reducing motor energy consumption. Furthermore, by adjusting the nut, the overall rigidity of the column can be adjusted to a certain extent. If higher column rigidity is required, the clamping force between the frame and the column can be increased; if lower overall column rigidity is required, the clamping force between the frame and the column can be appropriately decreased.

[0008] In some embodiments, the sliding guide mechanism includes a linear needle roller bearing, a guide rail, and a clamping block. The linear needle roller bearing is connected to the column, the clamping block is connected to the frame, and the clamping block abuts against the guide rail, causing the guide rail to press against the linear needle roller bearing.

[0009] The guide rod extends at least partially into the clamping block, and one end of the spring abuts against the clamping block.

[0010] In some embodiments, the linear needle roller bearing and the guide rail are V-shaped and fit together, and the clamping block includes an arrowhead portion that extends into the V-shaped notch of the guide rail to clamp the guide rail and the linear needle roller bearing.

[0011] In some embodiments, the tubular connection mechanism further includes an adjusting base plate, which is fixedly connected to the tubular column. The adjusting base plate has a V-shaped connecting portion for accommodating and connecting the linear needle roller bearing.

[0012] In some embodiments, a trapezoidal guide hole is formed on the side of the clamping block away from the guide rail, and both the guide rod and the spring extend at least partially into the trapezoidal guide hole.

[0013] In some embodiments, the angle of the V-shaped notch in the linear needle roller bearing and the guide rail is less than 90°.

[0014] In some embodiments, the column connection mechanism further includes a bracket and a mounting base plate, the mounting base plate being connected to the vehicle frame, the bracket being fixedly connected to the mounting base plate, and the preload adjustment mechanism being disposed on the bracket.

[0015] In some embodiments, the bracket has a threaded hole, and the nut is threadedly connected to the threaded hole. The nut rotates relative to the bracket to drive the guide rod to move relative to the bracket to adjust the pressure of the spring on the sliding guide mechanism.

[0016] In some embodiments, the bracket is formed with a groove, and the sliding guide mechanism includes a clamping block with a connecting portion formed at one end of the clamping block near the bracket, the connecting portion being accommodated in the groove.

[0017] The vehicle according to the embodiments of this application includes a vehicle body and a column connection mechanism as described in any of the above embodiments, wherein the column connection mechanism is disposed on the vehicle body.

[0018] In the column connection mechanism and vehicle of this application embodiment, the column and frame can be connected by a sliding guide rail mechanism to ensure smooth movement of the column relative to the frame. Simultaneously, the preload on the sliding guide rail mechanism can be changed by adjusting the nut, thereby reducing friction, improving motor adjustment efficiency, and reducing motor energy consumption. Furthermore, by adjusting the nut, the overall rigidity of the column can be adjusted to a certain extent. If higher column rigidity is required, the clamping force between the frame and the column can be increased; if lower overall column rigidity is required, the clamping force between the frame and the column can be appropriately decreased.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0021] Figure 1 This is a structural schematic diagram of the column connection mechanism according to an embodiment of this application;

[0022] Figure 2 This is another structural schematic diagram of the column connection mechanism according to an embodiment of this application;

[0023] Figure 3 This is an exploded structural diagram of the column connection mechanism according to an embodiment of this application;

[0024] Figure 4 This is a structural schematic diagram of the vehicle according to an embodiment of this application;

[0025] Figure 5 This is a cross-sectional structural schematic diagram of the column connection mechanism according to an embodiment of this application.

[0026] Explanation of key component symbols:

[0027] Column connection mechanism 100;

[0028] Sliding guide rail mechanism 10, linear needle roller bearing 11, guide rail 12, clamping block 13, arrow part 131, trapezoidal guide hole 132, connecting part 133, preload adjustment mechanism 20, nut 21, guide rod 22, spring 23, adjusting base plate 30, V-shaped connecting part 31, bracket 40, threaded hole 41, groove 42, mounting base plate 50, vehicle 200, body 201, column 202, frame 203. Detailed Implementation

[0029] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples and settings are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] Please see Figures 1 to 4 The column connection mechanism 100 of this application embodiment is used for a vehicle 200. The column connection mechanism 100 includes a sliding guide rail mechanism 10 and a preload adjustment mechanism 20. The sliding guide rail mechanism 10 is used to connect the column 202 and the frame 203 of the vehicle 200, so that the column 202 can move relative to the frame 203 and thus be telescopically adjusted. The preload adjustment mechanism 20 includes a nut 21, a guide rod 22 and a spring 23. The spring 23 is sleeved on the guide rod 22 and its two sides abut against the sliding guide rail mechanism 10 and the guide rod 22 respectively. The nut 21 and the guide rod 22 are connected to the frame 203. The nut 21 can drive the guide rod 22 to move relative to the frame 203 to adjust the pressure of the spring 23 on the sliding guide rail mechanism 10.

[0033] In the column connection mechanism 100 of this application embodiment, the column 202 and the frame 203 can be connected by the sliding guide mechanism 10 to ensure that the column 202 can move smoothly relative to the frame 203. Simultaneously, the preload on the sliding guide mechanism 10 can be changed by adjusting the nut 21, thereby reducing friction, improving motor adjustment efficiency, and reducing motor energy consumption. Furthermore, by adjusting the nut 21, the overall rigidity of the column 202 can be adjusted to a certain extent. If higher rigidity of the column 202 is required, the clamping force between the frame 203 and the column 202 can be increased; if lower overall rigidity of the column 202 is required, the clamping force between the frame 203 and the column 202 can be appropriately reduced.

[0034] In related technologies, during the extension and retraction adjustment of the tubing string, the friction between the tubing string and the support is sliding friction. As the lubricant gradually deteriorates and is consumed, the frictional force between the tubing string and the support increases, resulting in a poorer operating feel and generating noise during the extension and retraction adjustment process. Furthermore, the tubing string may experience relative rotation or misalignment during movement.

[0035] In this embodiment, the column connection mechanism 100 can adjust the distance between the frame 203 and the column 202 via the preload adjustment mechanism 20, avoiding large gaps between them. Simultaneously, the preload on the sliding guide mechanism 10 can be changed by adjusting the nut 21, thus reducing friction between the column 202 and the frame 203, thereby reducing pressure on the sliding guide mechanism 10, preventing noise, and ensuring a better operating feel. Furthermore, when the movement of the column 202 relative to the frame 203 is controlled by a motor, reducing friction improves the efficiency of motor adjustment and reduces energy consumption.

[0036] In addition, the column connection mechanism 100 can limit the relative movement of the column 202 and the frame 203 through the sliding guide mechanism 10, which has the functions of limiting and guiding, and avoids the problem of misalignment or rotation of the column 202 relative to the frame 203 during the movement. Of course, in the embodiments of this application, the spring 23 can also be replaced by other elastic elements to achieve the same function, and no specific limitation is made here.

[0037] Please see Figure 3 and Figure 5 In some embodiments, the sliding guide mechanism 10 includes a linear needle roller bearing 11, a guide rail 12, and a clamping block 13. The linear needle roller bearing 11 is connected to the column 202, and the clamping block 13 is connected to the frame 203. The clamping block 13 abuts against the guide rail 12, causing the guide rail 12 to press against the linear needle roller bearing 11. A guide rod 22 extends at least partially into the clamping block 13, and one end of a spring 23 abuts against the clamping block 13.

[0038] Thus, the clamping block 13 can press the guide rail 12 onto the linear needle roller bearing 11, allowing the guide rail 12 to move relative to the linear needle roller bearing 11, causing the needle rollers to rotate and generating rolling friction. Rolling friction has relatively low frictional force, effectively reducing grease consumption and preventing noise problems. Simultaneously, the nut 21 can be located within the clamping block 13 and can rotate relative to it to support the guide rod 22, thereby controlling the compression of the spring 23 and adjusting the preload between the frame 203 and the column 202.

[0039] Specifically, the linear needle roller bearing 11 can be connected to the column 202, and the clamping block 13 can be connected to the frame 203. Simultaneously, the other side of the clamping block 13 can be directly connected to the guide rail 12 to ensure that the guide rail 12 can press against the linear needle roller bearing 11. At this time, the needle rollers on the linear needle roller bearing 11 are in direct contact with the guide rail 12, and when the frame 203 and the guide rail 12 move relative to the column 202, the needle rollers can roll, generating rolling friction between the needle rollers and the guide rail 12. Furthermore, the spring 23 can prevent the guide rod 22 from directly contacting the clamping block 13, thereby avoiding rigid collision damage.

[0040] Please see Figure 2 and Figure 3 In some embodiments, the linear needle roller bearing 11 and the guide rail 12 are V-shaped and fit together. The clamping block 13 includes an arrowhead portion 131 that extends into the V-shaped notch of the guide rail 12 to clamp the guide rail 12 and the linear needle roller bearing 11.

[0041] Thus, both the linear needle roller bearing 11 and the guide rail 12 are V-shaped, ensuring that the two components can fit tightly together. At the same time, when the clamping block 13 applies pressure to the guide rail 12 in the direction indicated by the arrow 131, it can convert the pressure into a component force on both surfaces, thereby avoiding the problem of the guide rail 12 being misaligned relative to the linear needle roller bearing 11 due to the action of the clamping block 13.

[0042] Further, please refer to Figure 2 and Figure 3 In some embodiments, the column connection mechanism 100 further includes an adjusting base plate 30, which is fixedly connected to the column 202. The adjusting base plate 30 has a V-shaped connecting portion 31 for accommodating and connecting the linear needle roller bearing 11.

[0043] Thus, the V-shaped connecting part 31 is used to accommodate and connect the linear needle roller bearing 11, so as to prevent the linear needle roller bearing 11 from being misaligned with the adjusting base plate 30 under the pressure of the clamping block 13 and the guide rail 12.

[0044] Specifically, the adjusting base plate 30 can be fixedly connected to the column 202, and the V-shaped connecting part 31 can connect to the V-shaped linear needle roller bearing 11, so that the linear needle roller bearing 11 can maintain a fixed position with the adjusting base plate 30. At this time, the arrow part 131 and the V-shaped protrusion of the guide rail 12 can extend between the linear needle roller bearing 11 and abut against the needle rollers. In this way, the guide rail 12 and the linear needle roller bearing 11 can be prevented from being misaligned when the clamping block 13 is subjected to upward or downward force.

[0045] Please see Figure 3 and Figure 5In some embodiments, the clamping block 13 has a trapezoidal guide hole 132 formed on the side away from the guide rail 12, and the guide rod 22 and the spring 23 both extend at least partially into the trapezoidal guide hole 132.

[0046] Thus, the guide rod 22 can be inserted into the hole in the middle of the trapezoidal guide hole 132, and the spring 23 can abut against the trapezoidal surface of the trapezoidal guide hole 132, thereby ensuring the limiting of the guide rod 22 and the spring 23.

[0047] Specifically, a trapezoidal guide hole 132 is formed on the side of the clamping block 13 away from the guide rail 12. The guide rod 22 and the spring 23 both extend at least partially into the trapezoidal guide hole 132. Thus, the guide rod 22 can be moved by adjusting the nut 21, and the guide rod 22 in turn presses against the spring 23, thereby controlling the compression of the spring 23. For example, in one instance, when the nut 21 moves towards the adjusting base plate 30, the guide rod 22 presses against the spring 23, causing the spring 23 to tighten. The spring 23 can press against the trapezoidal surface of the trapezoidal guide hole 132 to press against the clamping block 13, thereby increasing the pressure of the clamping block 13 and the guide rail 12 on the linear needle roller bearing 11. This increases the clamping force between the frame 203 and the column 202, resulting in higher rigidity of the column 202. In another example, when the nut 21 moves away from the adjusting base plate 30, the spring 23 relaxes, thereby reducing the pressure of the clamping block 13 and the guide rail 12 on the linear needle roller bearing 11. This reduces the clamping force between the frame 203 and the column 202, resulting in lower rigidity of the column 202.

[0048] Furthermore, when it is necessary to adjust the friction force, the friction force can be directly adjusted by increasing or decreasing the axial adjustment of the preload adjusting nut 21. Since increasing or decreasing the clamping force will also affect the overall rigidity of the entire mechanism, the natural frequency of the entire column 202 and frame 203 can be adjusted by adjusting the clamping force to adapt to the corresponding system.

[0049] Please see Figure 2 and Figure 3 In some embodiments, the angle of the V-shaped notch between the linear needle roller bearing 11 and the guide rail 12 is less than 90°. This avoids the problem of the V-shaped notch angle being too large, causing the components of the sliding guide rail mechanism 10 to slide out of the V-shaped notch.

[0050] Specifically, the original slide rail guide groove is replaced by a V-shaped linear needle roller bearing 11 and a guide rail 12, reducing sliding friction and converting it to rolling friction, thus simplifying the structure. Simultaneously, the clamping force between the frame 203 and the tube column 202 can be adjusted by adjusting the nut 21 and spring 23, thereby adjusting the overall rigidity of the tube column 202. This ensures that the natural frequencies of the tube column 202 and the frame 203 are appropriate, avoiding resonance that could damage components. The angle of the V-shaped notch is less than 90°, limiting the positions of the linear needle roller bearing 11, the guide rail 12, and the clamping block 13. The V-shaped guide rail 12 restricts the relevant degrees of freedom of the tube column 202, allowing it to move linearly only with the adjusting base plate 30, preventing tilting or misalignment during operation.

[0051] Please see Figure 1 and Figure 3 In some embodiments, the column connection mechanism 100 further includes a bracket 40 and a mounting base plate 50. The mounting base plate 50 is connected to the frame 203, the bracket 40 is fixedly connected to the mounting base plate 50, and the pre-tightening adjustment mechanism 20 is disposed on the bracket 40.

[0052] Thus, the bracket 40 and the adjusting base plate 30 are arranged opposite to each other, so that when the pre-tightening adjusting mechanism 20 is set on the bracket 40, the guide rod 22 and the spring 23 can partially extend into the clamping block 13. In this way, the tube column 202 can be connected to the mounting base plate 50 through the tube column connecting mechanism 100 of this application embodiment. The tube column 202 can be set at the end of the tube column connecting mechanism 100 away from the mounting base plate 50, so that the tube column 202 can be connected to the frame 203, ensuring the stability of the connection.

[0053] Further, please refer to Figure 3 and Figure 5 In some embodiments, a threaded hole 41 is formed on the bracket 40, and the nut 21 is connected to the threaded hole 41 by a thread. The nut 21 rotates relative to the bracket 40 to drive the guide rod 22 to move relative to the bracket 40 to adjust the pressure of the spring 23 on the sliding guide mechanism 10.

[0054] Thus, the nut 21 and the threaded hole 41 are connected by a thread, allowing the user to quantitatively adjust the distance by which the nut 21 is screwed into the guide rod 22, thereby changing the compression of the spring 23 and adjusting the pressure on the clamping block 13, the guide rail 12, and the linear needle roller bearing 11.

[0055] Furthermore, please refer to Figure 2 and Figure 3 In some embodiments, the bracket 40 has a groove 42, and the sliding guide mechanism 10 includes a clamping block 13. The clamping block 13 has a connecting portion 133 at one end near the bracket 40, and the connecting portion 133 is accommodated in the groove 42.

[0056] Thus, the connecting part 133 of the clamping block 13 is accommodated in the groove 42, which restricts the position of the clamping block 13 and prevents the clamping block 13 from being displaced from the groove 42.

[0057] Specifically, a trapezoidal guide hole 132 can be formed on the connecting portion 133. A nut 21 is mounted on the bracket 40, allowing the connecting portion 133 of the clamping block 13 to be accommodated in the groove 42, so that the spring 23 and the guide rod 22 can partially extend into the trapezoidal guide hole 132. The guide rod 22 restricts the freedom of movement of the clamping block 13, allowing it to move only along the axis of the guide rod 22 for clamping or loosening operations. The spring 23 is installed in the countersunk hole of the V-shaped clamping block 13 and the guide rail 12 bracket 40. The adjusting nut 21 is threadedly connected to the bracket 40. Rotating the adjusting nut 21 increases the clamping force by compressing the spring 23 through the axial movement of the adjusting nut 21.

[0058] In this embodiment, the adjustment of the column 202 can be controlled by a motor. A V-shaped linear needle roller bearing 11 is added between the support 40 and the column 202. When the column 202 and the support 40 are adjusted for telescopic movement, the original sliding friction is transformed into rolling friction of the bearing, reducing friction, improving the efficiency of motor adjustment, reducing motor energy consumption, and reducing the probability of abnormal noise during sliding. Furthermore, the friction of the rolling bearing can be adjusted according to specific needs by adjusting the compression of the nut 21 and the spring 23, maintaining consistency of friction across the entire platform, reducing the need for motor selection, lowering development costs, and improving the versatility and performance of the column 202. Thus, by adjusting the nut 21, the overall rigidity of the column 202 can be adjusted to a certain extent. If higher rigidity is required, the clamping force between the support 40 and the column 202 can be increased; if lower rigidity is required, the clamping force between the support 40 and the column 202 can be appropriately reduced.

[0059] Please see Figure 4 The vehicle 200 of this application includes a body 201 and a column connection mechanism 100 of any of the above embodiments, the column connection mechanism 100 being disposed on the body 201.

[0060] In the column connection mechanism 100 and vehicle 200 of this application embodiment, the column 202 and the frame 203 can be connected by the sliding guide mechanism 10 to ensure that the column 202 can move smoothly relative to the frame 203. Simultaneously, the preload on the sliding guide mechanism 10 can be changed by adjusting the nut 21, thereby reducing friction, improving motor adjustment efficiency, and reducing motor energy consumption. Furthermore, by adjusting the nut 21, the overall rigidity of the column 202 can be adjusted to a certain extent. If higher rigidity of the column 202 is required, the clamping force between the frame 203 and the column 202 can be increased; if lower overall rigidity of the column 202 is required, the clamping force between the frame 203 and the column 202 can be appropriately reduced.

[0061] In this application embodiment, the specific type of vehicle 200 is not limited. Vehicle 200 can be an electric vehicle or a hybrid vehicle to meet various needs.

[0062] In the description of the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A column connection mechanism for a vehicle, characterized in that, The tubular connection mechanism includes: A sliding guide mechanism is used to connect the vehicle's column and frame, so that the column can move relative to the frame and thus be extended and retracted. The preload adjustment mechanism includes a nut, a guide rod, and a spring. The spring is sleeved on the guide rod, and both sides of the spring abut against the sliding guide rail mechanism and the guide rod, respectively. The nut and the guide rod are connected to the vehicle frame. The nut can drive the guide rod to move relative to the vehicle frame to adjust the pressure of the spring on the sliding guide rail mechanism. The sliding guide mechanism includes a linear needle roller bearing, a guide rail, and a clamping block. The linear needle roller bearing is connected to the column, and the clamping block is connected to the frame. The clamping block abuts against the guide rail, causing the guide rail to press against the linear needle roller bearing. The nut is disposed in the clamping block, and the nut rotates relative to the clamping block to resist the forward and backward movement of the guide rod; The guide rod extends at least partially into the clamping block, and one end of the spring abuts against the clamping block.

2. The tubular connection mechanism according to claim 1, characterized in that, The linear needle roller bearing and the guide rail are V-shaped and fit together. The clamping block includes an arrowhead portion that extends into the V-shaped notch of the guide rail to clamp the guide rail and the linear needle roller bearing.

3. The tubular connection mechanism according to claim 2, characterized in that, The tubular column connection mechanism also includes an adjusting base plate, which is fixedly connected to the tubular column. The adjusting base plate has a V-shaped connecting part, which is used to accommodate and connect the linear needle roller bearing.

4. The tubular connection mechanism according to claim 1, characterized in that, The clamping block has a trapezoidal guide hole on the side away from the guide rail, and both the guide rod and the spring extend at least partially into the trapezoidal guide hole.

5. The tubular connection mechanism according to claim 2, characterized in that, The angle of the V-shaped notch in the linear needle roller bearing and the guide rail is less than 90°.

6. The tubular connection mechanism according to claim 1, characterized in that, The column connection mechanism also includes a bracket and a mounting base plate. The mounting base plate is connected to the vehicle frame, the bracket is fixedly connected to the mounting base plate, and the pre-tightening adjustment mechanism is disposed on the bracket.

7. The tubular connection mechanism according to claim 6, characterized in that, The bracket has a threaded hole, and the nut is threadedly connected to the threaded hole. The nut rotates relative to the bracket to drive the guide rod to move relative to the bracket in order to adjust the pressure of the spring on the sliding guide mechanism.

8. The tubular connection mechanism according to claim 6, characterized in that, The bracket has a groove, and the sliding guide mechanism includes a clamping block. The clamping block has a connecting portion at one end near the bracket, and the connecting portion is accommodated in the groove.

9. A vehicle, characterized in that, include: Body; and The column connection mechanism according to any one of claims 1-8 is disposed on the vehicle body.

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