A rail fine adjustment mechanism

Abstract

The utility model provides a kind of track fine adjustment mechanism, including pedestal, first screw rod assembly, second screw rod assembly, connecting rod assembly and connecting seat;Pedestal is set on support surface, first screw rod assembly, second screw rod assembly are all set on pedestal, first screw rod assembly, second screw rod assembly are all connected with connecting seat by connecting rod assembly, connecting seat is connected with track;First screw rod assembly, second screw rod assembly are all set along Z direction, connecting rod assembly makes connecting seat have Z direction's displacement degree of freedom, Y direction's displacement degree of freedom and inclination degree of freedom relative to XY plane.The utility model can complete the height of track, lateral position and the adjustment of inclination angle, simplify structure form, the use number of motor, it is convenient to arrange and work on site, using the adjustment mode of automation improves the efficiency and precision of track fine adjustment, to improve the quality of track construction.

Description

Technical Field

[0001] This utility model relates to the field of track construction technology, and in particular to a track fine-tuning mechanism. Background Technology

[0002] Ballastless track refers to a track structure that uses a monolithic foundation of concrete, asphalt mixture, or similar materials instead of loose gravel ballast. Compared to ballasted track, ballastless track avoids ballast splashing, offers better smoothness and stability, longer service life, better durability, requires less maintenance, and allows trains to operate at speeds exceeding 350 km / h.

[0003] Currently, the track panel method is commonly used in the construction of ballastless tracks. The track panels are reinforced and fine-tuned using specialized equipment, either by jacking or supporting. That is, after the track bed slab formwork is installed, the track panels are installed and then coarse and fine-tuned. During the fine-tuning process, a total station or other specialized instruments are needed for calibration. After the track panels are fine-tuned, concrete is quickly poured until the overall shape is finalized.

[0004] In the relevant publicly available technology, two support mechanisms are spaced apart from each other. The two ends of a crossbeam are respectively mounted on the top supports of the two support mechanisms. The two ends of a connecting rod are respectively connected to the supports of the two support mechanisms. A rail support adjustment mechanism is set on the crossbeam to fix, support, and adjust the rail. The support plate can be raised and lowered, thereby adjusting the height of the rail. The rail support adjustment mechanism can adjust the position of the rail. When using this equipment for adjustment, the height and lateral adjustments of the rail panel are performed completely independently. It is difficult to ensure that the rail panel is adjusted to the correct position during each adjustment process, requiring multiple adjustments, resulting in low work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a solution that is convenient and efficient in adjustment and can quickly ensure that the track is adjusted in place, in order to address the shortcomings of the above-mentioned background technology.

[0006] To achieve the above objectives, this utility model provides a track fine-tuning mechanism, including a base, a first lead screw assembly, a second lead screw assembly, a connecting rod assembly, and a connecting seat;

[0007] The base is disposed on the support surface, and the first lead screw assembly and the second lead screw assembly are both disposed on the base. The first lead screw assembly and the second lead screw assembly are both connected to the connecting seat through the connecting rod assembly, and the connecting seat is connected to the track.

[0008] Both the first lead screw assembly and the second lead screw assembly are arranged along the Z direction. The connecting rod assembly enables the connecting seat to have displacement degrees of freedom in the Z direction, displacement degrees of freedom in the Y direction, and tilting degrees of freedom relative to the XY plane.

[0009] Furthermore, the first lead screw assembly includes a first lead screw, a first movable seat, and a first drive unit. The first lead screw is arranged along the Z direction and is rotatably connected to the base. The first movable seat is threadedly engaged with the first lead screw, and the first drive unit is used to drive the first lead screw to rotate.

[0010] Furthermore, the first drive unit includes a first drive motor and a first transmission structure, and the output end of the first drive motor is connected to the first lead screw of the first transmission structure.

[0011] Furthermore, the second lead screw assembly includes a second lead screw, a second movable seat, and a second drive unit. The second lead screw is arranged along the Z direction and is rotatably connected to the base. The second movable seat is threadedly engaged with the second lead screw, and the second drive unit is used to drive the second lead screw to rotate.

[0012] Furthermore, the second drive unit includes a second drive motor and a second transmission structure, and the output end of the second drive motor is connected to the second lead screw through the second transmission structure.

[0013] Furthermore, the linkage assembly includes a first link, a second link, and a third link. The third link has a first end, a middle end, and a second end. The second end of the third link is fixedly connected to the connecting seat. The first end of the third link is rotatably connected to the second end of the first link. The first end of the first link is rotatably connected to the first movable seat. The middle end of the third link is rotatably connected to the second end of the second link. The first end of the second link is rotatably connected to the second movable seat.

[0014] Furthermore, the first connecting rod, the second connecting rod, and the third connecting rod are each arranged in two sets opposite to each other, and are located on both sides of the first movable seat, the second movable seat, and the connecting seat, respectively, and are rotatably connected by connecting pins.

[0015] Furthermore, the base is also provided with a first bearing and a second bearing, the first end of the first lead screw is engaged with the first bearing, and the first end of the second lead screw is engaged with the second bearing.

[0016] Furthermore, the first lead screw assembly also includes a guide cylinder, which is fixedly connected to the base, and the first movable seat cooperates with the guide cylinder; the second lead screw assembly also includes a guide rail, which is disposed on the outer surface of the guide cylinder, and the second movable seat is slidably connected to the guide rail.

[0017] Furthermore, the track fine-tuning mechanism also includes a pull rod located on the other side of the base relative to the connecting seat. The first end of the pull rod is connected to the first lead screw assembly, and the second end of the pull rod is connected to the support surface.

[0018] The above-mentioned solution of this utility model has the following beneficial effects:

[0019] The track fine-tuning mechanism provided by this utility model can adjust the height, lateral position and tilt angle of the track through two sets of lead screw assemblies arranged along the height direction. This setting simplifies the structural form and the number of motors used, making it convenient for on-site layout and operation. The use of automated adjustment improves the efficiency and accuracy of track fine-tuning, thereby improving the quality of track construction.

[0020] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is another schematic diagram of the overall structure of this utility model (partially hidden);

[0023] Figure 3 This is a schematic diagram of the linkage assembly of this utility model.

[0024] [Explanation of Markings in the Attached Images]

[0025] 1-Base; 2-Connecting seat; 3-First lead screw; 4-First movable seat; 5-First drive motor; 6-Second lead screw; 7-Second movable seat; 9-Second drive motor; 10-First connecting rod; 11-Second connecting rod; 12-Third connecting rod; 13-First bearing; 14-Second bearing; 15-Guide cylinder; 16-Guide rail; 17-Pull rod. Detailed Implementation

[0026] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 , Figure 2 As shown, an embodiment of this utility model provides a track fine-tuning mechanism, including a base 1, a first lead screw assembly, a second lead screw assembly, a connecting rod assembly, and a connecting seat 2. The base 1 is mounted on a support surface to support the entire fine-tuning process. For example, the base 1 can be mounted on a construction surface such as a roadbed, bridge, or tunnel. During track (track panel) fine-tuning, the base 1 needs to maintain its position to ensure the accuracy of the track fine-tuning and avoid safety hazards such as instability. The first and second lead screw assemblies are both mounted on the base 1 and are connected to the connecting seat 2 via the connecting rod assembly to adjust the height (Z-axis position), lateral position (Y-axis position), and tilt angle of the connecting seat 2 relative to the XY plane. The connecting seat 2 is fixedly connected to the first end of a connecting arm (not shown in the figure), and the second end of the connecting arm is fixedly connected to the track. Therefore, adjusting the connecting seat 2 achieves the purpose of making the track horizontal (or other preset posture).

[0030] It should be noted that in this embodiment, the X, Y, and Z directions are as follows: Figure 1 As shown, the X direction corresponds to the orientation of the track, the Y direction corresponds to the orientation of the sleepers, and the Z direction corresponds to the height direction. For (prefabricated) track panels, since they have a certain length in the X direction, they need to be adjusted by multiple track adjustment mechanisms arranged along the X direction to adjust the track panels as a whole to the preset posture.

[0031] In this embodiment, by setting the connecting rod assembly so that both the first lead screw assembly and the second lead screw assembly are arranged along the Z direction, the height, lateral position, and tilt angle of the connecting seat 2 can be adjusted. This arrangement makes the track fine-tuning mechanism more compact overall, with a relatively large size only in the height direction, and does not occupy a large area of ​​the roadbed, bridge, tunnel, or other construction surfaces, making it convenient to arrange.

[0032] In one specific embodiment of this invention, the first lead screw assembly includes a first lead screw 3, a first movable seat 4, and a first drive unit. The first lead screw 3 is arranged along the Z-direction, and the first movable seat 4 is threadedly engaged with the first lead screw 3 so that the first movable seat 4 can move along the Z-direction when the first lead screw 3 rotates. The first end of the first lead screw 3 is rotatably connected to the base 1. The first drive unit includes a first drive motor 5 and a first transmission structure. The first transmission structure, such as a synchronous belt, is arranged within the base 1. The output end of the first drive motor 5 is connected to the first lead screw 3 via the first transmission structure, thereby driving the first lead screw 3 to rotate. Since the track adjustment mechanism requires fine-tuning of the track, the first drive motor 5 needs to be a high-precision motor.

[0033] In one specific embodiment of this example, the second lead screw assembly includes a second lead screw 6, a second movable seat 7, and a second drive unit. Similar to the first lead screw 6 assembly, the second lead screw 6 is arranged along the Z-direction, and the second movable seat 7 is threadedly engaged with the second lead screw 6 so that the second movable seat 7 can move along the Z-direction when the second lead screw 6 rotates. The first end of the second lead screw 6 is also rotatably connected to the base 1. The second drive unit includes a second drive motor 9 and a second transmission structure. The second transmission structure can also be in the form of a synchronous belt, etc. In this embodiment, it is arranged outside the base 1. The output end of the second drive motor 9 is connected to the second lead screw 6 via the second transmission structure, thereby driving the second lead screw 6 to rotate. The second drive motor 9 is also a high-precision motor.

[0034] As described above, both the first movable seat 4 and the second movable seat 7 can move along the Z direction. In this embodiment, the connecting seat 2 is associated with both the first movable seat 4 and the second movable seat 7 through a linkage assembly, so that the first movable seat 4 and the second movable seat 7 can be adjusted to different degrees of freedom when they move synchronously or asynchronously in the Z direction. Specifically, the linkage assembly includes a first link 10, a second link 11, and a third link 12. The third link 12 has a first end, a middle end, and a second end. The second end of the third link 12 is fixedly connected to the connecting seat 2, the first end of the third link 12 is rotatably connected to the second end of the first link 10, the first end of the first link 10 is rotatably connected to the first movable seat 4, the middle end of the third link 12 is rotatably connected to the second end of the second link 11, and the first end of the second link 11 is rotatably connected to the second movable seat 7.

[0035] like Figure 3 As shown, when the first movable seat 4 and the second movable seat 7 move synchronously in the Z direction, the attitude of the entire linkage assembly remains unchanged, thereby allowing the connecting seat 2 to move along the Z direction to adjust its height. When the distance the first movable seat 4 moves along the Z direction is greater than (or less than) the distance the second movable seat 7 moves along the Z direction, based on the fact that the lengths of the first link 10 and the second link 11 do not change, the second end of the third link 12 will rotate relative to the middle end, thereby changing the attitude of the entire third link 12 and achieving the purpose of adjusting the tilt angle of the connecting seat 2. When the first movable seat 4 and the second movable seat 7 move in opposite directions, the first link 10 and the second link 11 rotate clockwise and counterclockwise respectively, thereby causing the third link 12 to move along the Y direction to adjust its lateral position.

[0036] It should be noted that this linkage assembly design causes a certain horizontal displacement of the connecting seat 2 when its tilt angle is adjusted. Therefore, the above process is carried out comprehensively during actual adjustment. By controlling the first drive motor 5 and the second drive motor 9, when the first movable seat 4 and the second movable seat 7 are in preset positions, the different degrees of freedom of the connecting seat 2 can all reach preset values, completing the track fine-tuning. Furthermore, this dual-motor approach, which adjusts at least three degrees of freedom, simplifies motor usage costs and improves reliability.

[0037] Understandably, the lateral position and tilt angle adjustment of the connecting seat 2 are very small during actual adjustment, while the track is heavy. Therefore, while using a high-precision motor, it is also necessary to ensure the smooth and accurate displacement of the lead screw assembly. Based on this, in this embodiment, the base 1 is also provided with a first bearing 13 and a second bearing 14. The first end of the first lead screw 3 is connected to the first bearing 13, and the first end of the second lead screw 6 is connected to the second bearing 14, thereby providing rotational support for the lead screw through the bearings, so that the rotation of the lead screw is more stable and reliable.

[0038] In a preferred embodiment, the first lead screw assembly further includes a guide cylinder 15, which is fixedly connected to the base 1. The first movable seat 4 is also elongated and inserted into the guide cylinder 15 for guidance. The second lead screw assembly further includes a guide rail 16, which is disposed on the outer surface of the guide cylinder 15. The second movable seat 7 is slidably connected to the guide rail 16 for guidance. Therefore, based on the guide cylinder 15 and the guide rail 16, the first movable seat 4 and the second movable seat 7 can be guided in the height direction, making the movement of the lead screw-driven connecting seat 2 more stable and reliable.

[0039] In addition, since the connecting seat 2 connected to the track is biased to one side of the base 1, in order to prevent the base 1 from overturning, in this embodiment, a tie rod 17 is further provided on the other side of the base 1 opposite to the connecting seat 2. The first end of the tie rod 17 is connected to the guide cylinder 15, and the second end of the tie rod 17 is connected to the roadbed, bridge, or tunnel, so that the base 1 and the entire track fine-tuning mechanism can better maintain balance.

[0040] In a preferred embodiment, the first link 10, the second link 11, and the third link 12 are arranged in two sets opposite to each other. They are located on both sides of the first movable seat 4, the second movable seat 7, and the connecting seat 2, respectively, and are rotatably connected by connecting pins, which further improves the reliability of the link assembly.

[0041] It should be noted that the lead screw assembly in this embodiment can also be replaced by other types of high-precision linear mechanisms, such as electric actuators.

[0042] In summary, the track fine-tuning mechanism provided in this embodiment, through two sets of lead screw assemblies arranged along the height direction, can adjust the height, lateral position, and tilt angle of the track. This configuration simplifies the structural form and the number of motors used, facilitating on-site layout and operation. The automated adjustment method improves the efficiency and accuracy of track fine-tuning, thereby enhancing the quality of track construction. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not contradict each other, they should be considered within the scope of this specification.

[0043] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A track fine-tuning mechanism, characterized in that, It includes a base, a first lead screw assembly, a second lead screw assembly, a connecting rod assembly, and a connecting seat; The base is disposed on the support surface, and the first lead screw assembly and the second lead screw assembly are both disposed on the base. The first lead screw assembly and the second lead screw assembly are both connected to the connecting seat through the connecting rod assembly, and the connecting seat is connected to the track. Both the first lead screw assembly and the second lead screw assembly are arranged along the Z direction. The connecting rod assembly enables the connecting seat to have displacement degrees of freedom in the Z direction, displacement degrees of freedom in the Y direction, and tilting degrees of freedom relative to the XY plane.

2. The track fine-tuning mechanism according to claim 1, characterized in that, The first lead screw assembly includes a first lead screw, a first movable seat, and a first driving part. The first lead screw is arranged along the Z direction and is rotatably connected to the base. The first movable seat is threadedly engaged with the first lead screw, and the first driving part is used to drive the first lead screw to rotate.

3. The track fine-tuning mechanism according to claim 2, characterized in that, The first drive unit includes a first drive motor and a first transmission structure, and the output end of the first drive motor is connected to the first lead screw of the first transmission structure.

4. The track fine-tuning mechanism according to claim 2, characterized in that, The second lead screw assembly includes a second lead screw, a second movable seat, and a second drive unit. The second lead screw is arranged along the Z direction and is rotatably connected to the base. The second movable seat is threadedly engaged with the second lead screw. The second drive unit is used to drive the second lead screw to rotate.

5. The track fine-tuning mechanism according to claim 4, characterized in that, The second drive unit includes a second drive motor and a second transmission structure. The output end of the second drive motor is connected to the second lead screw through the second transmission structure.

6. The track fine-tuning mechanism according to claim 4, characterized in that, The linkage assembly includes a first link, a second link, and a third link. The third link has a first end, a middle end, and a second end. The second end of the third link is fixedly connected to the connecting seat. The first end of the third link is rotatably connected to the second end of the first link. The first end of the first link is rotatably connected to the first movable seat. The middle end of the third link is rotatably connected to the second end of the second link. The first end of the second link is rotatably connected to the second movable seat.

7. The track fine-tuning mechanism according to claim 6, characterized in that, The first connecting rod, the second connecting rod, and the third connecting rod are each arranged in two sets opposite to each other, and are located on both sides of the first movable seat, the second movable seat, and the connecting seat, respectively, and are rotatably connected by connecting pins.

8. The track fine-tuning mechanism according to claim 4, characterized in that, The base is also provided with a first bearing and a second bearing, the first end of the first lead screw is engaged with the first bearing, and the first end of the second lead screw is engaged with the second bearing.

9. A track fine-tuning mechanism according to claim 4, characterized in that, The first lead screw assembly further includes a guide cylinder, which is fixedly connected to the base, and the first movable seat cooperates with the guide cylinder; the second lead screw assembly further includes a guide rail, which is disposed on the outer surface of the guide cylinder, and the second movable seat is slidably connected to the guide rail.

10. A track fine-tuning mechanism according to claim 1, characterized in that, The track fine-tuning mechanism also includes a pull rod, which is located on the other side of the base relative to the connecting seat. The first end of the pull rod is connected to the first lead screw assembly, and the second end of the pull rod is connected to the support surface.

Images