Rail moving and aligning mechanism and ballastless track replacing equipment

Abstract

The application provides a steel rail moving and aligning mechanism and a ballastless track replacing device. The aligning mechanism comprises a positioning seat body, a rail lifting device hinged to the positioning seat body, a rail clamping assembly and a rail lifting vertical driving assembly. The rail lifting vertical driving assembly is connected with the positioning seat body and the rail clamping assembly respectively and is used for clamping and lifting the steel rail. The aligning mechanism further comprises a rail shifting device fixed to the positioning seat body, a rail shifting horizontal driving assembly and a shifting fork executing assembly. The rail shifting horizontal driving assembly is connected with the positioning seat body and the shifting fork executing assembly respectively and is used for shifting the steel rail to adjust the horizontal position. In the application, the aligning mechanism realizes fast, safe and efficient steel rail clamping, lifting and aligning operation in the steel rail laying or replacing operation through the cooperation of the rail lifting device and the rail shifting function. The structure is integrally arranged, the number of devices is reduced, the management is facilitated, the clamping is reliable, the lifting is stable, the risk of manual lifting is avoided, and the efficiency and precision of the track laying or replacing operation are improved.

Description

Technical Field

[0001] This application relates to the field of railway track maintenance technology, specifically to a rail moving and positioning mechanism and a ballastless track replacement device. Background Technology

[0002] During railway construction or maintenance (especially in the laying, replacement, or adjustment of seamless rails), it is often necessary to clamp and lift the rails vertically and fine-tune their position horizontally to achieve precise alignment or installation. Traditional methods have the following technical problems: high manual labor intensity, heavy rails making handling difficult; requiring multiple people to lift or push the rails, resulting in low efficiency and a high risk of safety accidents; poor positioning accuracy, lack of effective clamping and guiding mechanisms, making it difficult to achieve high-precision alignment; affecting track laying quality and potentially leading to problems such as poor joints and track misalignment. Summary of the Invention

[0003] This application provides a rail moving and alignment mechanism and a ballastless track replacement device to solve the problems of high manual operation intensity and low positioning accuracy in existing rail moving and alignment systems.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A rail moving and positioning mechanism, comprising:

[0006] Positioning base;

[0007] A rail lifting device, hinged to the positioning base, includes a rail lifting vertical drive assembly and a rail clamping assembly. The rail lifting vertical drive assembly is connected to the positioning base and the rail clamping assembly respectively, and is used to clamp and lift the rail.

[0008] A rail-shifting device, fixed to the positioning base, includes a rail-shifting lateral drive assembly and a shift fork actuation assembly. The rail-shifting lateral drive assembly is connected to the positioning base and the shift fork actuation assembly respectively, and is used to shift the rail for lateral position adjustment.

[0009] Optionally, the vertical drive assembly for lifting the rail includes:

[0010] Vertical drive component for rail lifting;

[0011] The first lead screw and nut transmission pair has its lead screw connected to the vertical drive component for lifting the rail, and its nut connected to the rail clamping assembly.

[0012] Optionally, the rail lifting device further includes a rail lifting support, which is hinged above the positioning seat via a horizontal pivot.

[0013] The vertical drive component for lifting the rail is located on the rail support, and its extended end is connected to the rail clamping assembly.

[0014] Optionally, the lateral drive assembly of the dial rail includes:

[0015] Lateral drive component for the dial rail;

[0016] The second lead screw and nut transmission pair has its lead screw connected to the transverse drive component of the shift rail, and its nut connected to the shift fork actuation component.

[0017] Optionally, the rail shifting device further includes a rail shifting support and a tail end bearing, which are fixed to the lateral ends of the positioning seat body;

[0018] The two ends of the lead screw of the second lead screw nut rotating pair are rotatably connected to the guide rail support and the tail end bearing, respectively.

[0019] Optionally, the positioning seat is a U-shaped seat;

[0020] The rail lifting device is located laterally in the middle of the U-shaped seat, and the rail clamping assembly is located inside the U-shaped cavity of the U-shaped seat;

[0021] The dialing device is located on the back of the U-shaped base.

[0022] Optionally, the bottom of both sides of the U-shaped seat is provided with flexible buffers for placement on the rail support platform.

[0023] Optionally, the rail clamping assembly includes:

[0024] Mounting block;

[0025] Two rail clamps are positioned opposite each other, and their tops are hinged to the mounting block.

[0026] The gripper drive unit has one end connected to one of the two rail grippers and the other end connected to the other of the two rail grippers, and is used to drive the two rail grippers to move towards or away from each other.

[0027] Optionally, the side wall of the U-shaped seat is provided with a strip-shaped relief hole that extends through the wall thickness, and the strip-shaped relief hole extends along the length direction of the U-shaped seat;

[0028] The gripper drive is located in the strip-shaped clearance hole.

[0029] This application provides a ballastless track replacement device, including: the rail moving and positioning mechanism described in any of the above embodiments.

[0030] The rail moving and alignment mechanism and ballastless track replacement equipment provided in this application embodiment have the following technical advantages compared with the prior art:

[0031] In this application, the alignment mechanism, through the coordinated operation of the rail lifting device and the rail shifting function, achieves fast, safe, and efficient rail clamping, lifting, and alignment operations during rail laying or replacement. Its integrated structure reduces the number of devices, facilitates management, ensures reliable clamping, and provides smooth lifting, avoiding the risks of manual lifting; thereby improving the efficiency and accuracy of rail laying or replacement operations. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0033] Figure 1 This is a front view structural schematic diagram of a rail moving alignment mechanism provided in an embodiment of this application;

[0034] Figure 2 This is a schematic diagram of the structure of a rail moving and positioning mechanism provided in another embodiment of this application;

[0035] Figure 3 for Figure 1 A schematic diagram of the rear view structure.

[0036] The following labels are shown in the attached diagram:

[0037] 600 rail moving and positioning mechanism;

[0038] Positioning seat 601, vertical drive assembly for lifting rail 602, rail clamping assembly 603, lateral drive assembly for shifting rail 604, shift fork actuation assembly 605, rail lifting support 606, shifting rail support 607, tail end bearing 608, flexible buffer 609.

[0039] Vertical drive component for lifting rail 6021, first lead screw and nut transmission pair 6022;

[0040] Lateral drive component 6041 for the guide rail; second lead screw and nut transmission pair 6042;

[0041] Rail gripper 6031, gripper drive component 6032;

[0042] Strip-shaped clearance hole 6011. Detailed Implementation

[0043] This invention discloses a rail moving and alignment mechanism and a ballastless track replacement device to solve the problems of high manual operation intensity and low positioning accuracy in existing rail moving and alignment systems.

[0044] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0045] Please see Figure 1-3 , Figure 1 This is a front view structural schematic diagram of a rail moving alignment mechanism provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a rail moving and positioning mechanism provided in another embodiment of this application; Figure 3 for Figure 1 A schematic diagram of the rear view structure.

[0046] In one specific embodiment, the rail movement and alignment mechanism 600 provided in this application includes a positioning base 601, a rail lifting device, and a rail shifting device. The positioning base 601 serves as the basic support platform of the mechanism, where the rail lifting device and the rail shifting device are installed and fixed. It serves as the installation benchmark for the entire set of equipment on the rail, providing overall structural stability and load-bearing capacity, such as a steel structure frame. The rail lifting device is hinged to the positioning base 601, allowing for a certain range of swing to adapt to terrain undulations or angle changes. The rail is fixed by the rail clamping assembly 603, and the rail is moved up and down by the rail lifting vertical drive assembly 602. The rail lifting vertical drive assembly 602 can be configured as a hydraulic cylinder, an electric push rod, or a pneumatic actuator, etc. The rail clamping assembly 603 can be a mechanical clamp or a gripper, etc., and can be configured as needed, all of which are within the protection scope of this application.

[0047] The rail shifting device is fixed on the positioning base 601 to ensure stable and reliable rail shifting action; the rail shifting lateral drive assembly 604 can be configured as a linear guide, hydraulic cylinder, or lead screw mechanism, etc.; the shift fork actuation assembly 605 can be configured as a U-shaped fork structure, which is inserted into the rail for pushing. Lateral force is achieved by the shift fork of the shift fork actuation assembly 605 contacting the rail.

[0048] The specific working process is as follows: Place the rail moving and positioning mechanism on the rail to be processed, and place the positioning seat 601 on the rail support platform to establish a stable operating platform; start the rail lifting device, the rail clamping component 603 clamps the rail, ready for lifting; start the rail lifting vertical drive component 602 to lift the rail to a suitable height, detach it from the original rail support, start the rail shifting device, and the shifting fork actuator 605 pushes the rail laterally to fine-tune the rail position, observe the alignment, repeat the above steps until precise alignment is achieved to meet the installation or docking requirements, release the clamp, slowly lower the rail, complete the installation, and end the current operation cycle.

[0049] The rail moving and alignment mechanism 600 and ballastless track replacement equipment provided in this application embodiment have the following technical advantages compared with the prior art:

[0050] In this application, the alignment mechanism, through the coordinated operation of the rail lifting device and the rail shifting function, achieves fast, safe, and efficient rail clamping, lifting, and alignment operations during rail laying or replacement. Its integrated structure reduces the number of devices, facilitates management, ensures reliable clamping, and provides smooth lifting, avoiding the risks of manual lifting; thereby improving the efficiency and accuracy of rail laying or replacement operations.

[0051] In one alternative embodiment, the vertical drive assembly 602 for lifting rails includes:

[0052] Vertical drive component for rail lifting 6021;

[0053] The first lead screw and nut transmission pair 6022 has its lead screw connected to the vertical drive component 6021 for lifting rails, and its nut connected to the rail clamping assembly 603.

[0054] The vertical lifting drive component 6021 provides the power source for the entire vertical lifting action and can be configured as a servo motor, stepper motor, hydraulic cylinder, etc. The first lead screw and nut transmission pair 6022 includes a lead screw and a nut that cooperates with it, converting rotational motion into linear motion, driving the rail clamping assembly 603 to move up and down, achieving high-precision transmission, and its operation is smooth and low-noise. Specifically, the vertical lifting drive component 6021 is connected to the lead screw, transmitting the rotational motion of the motor to the lead screw, and the rail clamping assembly 603 is connected to the nut, which moves up and down with the rotation of the lead screw, thereby driving the clamping assembly to lift and lower.

[0055] The specific working process is as follows: the drive component (such as a servo motor) is started, which drives the lead screw to rotate; when the lead screw rotates, the nut meshing with it moves linearly along the axis of the lead screw; the nut drives the rail clamping assembly 603 to rise or fall, thereby lifting or lowering the rail; by controlling the forward and reverse rotation of the drive component, the height position of the clamping assembly can be precisely controlled; in the power-off state, the lead screw and nut mechanism has a certain mechanical self-locking capability to prevent the clamping assembly from falling accidentally and improve safety.

[0056] Screw drives have millimeter-level or even micrometer-level positioning accuracy, making them suitable for precision operations in track laying. Compared to hydraulic or pneumatic systems, screw structures are more compact and easier to integrate into the positioning base 601. This structural design utilizes the high-precision characteristics of screw drives to achieve stable and controllable lifting of the rail clamping assembly 603, improving the operational accuracy and safety of the entire mechanism during track construction. It is especially suitable for the precision laying and adjustment of seamless tracks.

[0057] In another embodiment, the rail lifting device further includes a rail lifting support 606, which is hinged above the positioning seat 601 via a horizontal pivot.

[0058] The vertical drive component 6021 for lifting rails is located on the rail support 606, and its extended end is connected to the rail clamping assembly 603.

[0059] The rail lifting support 606 is hinged to the upper part of the positioning seat 601 via a horizontal rotating shaft. The upper part of the positioning seat 601 is provided with a horizontal rotating shaft groove. The rail lifting device also has a pressure cap, which is used to cooperate with the rotating shaft groove to fix the horizontal rotating shaft, so that the positioning seat 601 can rotate around the shaft to adapt to changes in track slope or uneven terrain, thereby enhancing the applicability and flexibility of the equipment.

[0060] When there are elevation differences or slopes in the track, the positioning seat 601 can be adjusted to ensure that the clamping assembly is always perpendicular to the rail surface, thus improving clamping stability. After starting, it drives the first lead screw nut transmission pair 6022 or directly pushes the clamping assembly to realize the lifting and lowering of the rail clamping assembly 603. After clamping the rail, the vertical drive component 6021 continues to operate to lift the rail as a whole. This improves the adaptability of the rail lifting device to complex terrain and track conditions, enhances clamping stability and operational safety, and is particularly suitable for precise alignment operations in railway curves, slopes, and track maintenance scenarios.

[0061] In one alternative embodiment, the lateral drive assembly 604 includes:

[0062] 6041 transverse drive component for the dial rail;

[0063] The second lead screw and nut transmission pair 6042 has its lead screw connected to the transverse drive component 6041 of the shift rail, and its nut connected to the shift fork actuator 605.

[0064] The transverse drive component 6041 provides the power source for the shifting action and can be configured as a servo motor, stepper motor, or hydraulic cylinder, etc.; the second lead screw and nut transmission pair 6042 includes a lead screw and a mating nut, which converts rotational motion into linear motion, driving the shift fork actuator 605 to move laterally, thereby achieving high-precision transmission with smooth operation and low noise. The lead screw is connected to the transverse drive component 6041 to provide rotational power input, and the shift fork actuator 605 is connected to the nut, driving the shift fork to move laterally along the track.

[0065] The specific working process is as follows: the start-up drive component (such as a servo motor) drives the lead screw to rotate; when the lead screw rotates, the nut meshing with it moves linearly along the lead screw axis; the nut drives the shift fork actuator 605 to move laterally along the track; by controlling the forward and reverse rotation of the drive component, the left and right movement direction and distance of the shift fork can be precisely controlled; the lead screw transmission accuracy can reach the millimeter level or even higher, meeting the precision requirements of track alignment. Compared with hydraulic or pneumatic systems, it is easier to integrate into the positioning base 601. This structural design utilizes the high precision and stability characteristics of the lead screw transmission to achieve precise adjustment of the lateral position of the rail, improving the operational accuracy and adaptability of the entire mechanism during track construction, and is especially suitable for the precision laying and adjustment of seamless tracks.

[0066] In one optional embodiment, the guide rail device further includes a guide rail support 607 and a tail end bearing 608, which are fixed to the lateral ends of the positioning seat 601; the axial ends of the lead screw of the second lead screw nut rotating pair are respectively rotatably connected to the guide rail support 607 and the tail end bearing 608.

[0067] The guide rail support 607 is a fixed bracket used to support one end of the lead screw, providing a mounting reference for one end of the lead screw; the guide rail lateral drive component 6041 is also located on the guide rail support 607, which enhances the overall structural rigidity; the tail end bearing 608 is a bearing structure located at the other end of the lead screw, usually a rolling bearing or a sliding bearing; it supports the end of the lead screw, forming a complete two-end support structure; it reduces rotational friction, improves transmission efficiency; it prevents the lead screw from bending and deforming, and extends its service life.

[0068] Understandably, the two ends of the lead screw are supported by the guide rail support 607 and the tail bearing 608, forming a stable axis of rotation; the guide rail lateral drive component 6041 drives the lead screw to rotate; the nut moves along the lead screw axis, driving the guide fork actuator 605 to push the rail laterally; due to the existence of the support structure at both ends, the lead screw is not prone to swaying or bending during rotation.

[0069] In this embodiment, the positioning seat 601 is a U-shaped seat; the rail lifting device is located laterally in the middle of the U-shaped seat, and the rail clamping assembly 603 is located inside the U-shaped cavity of the U-shaped seat; the rail shifting device is located on the back of the U-shaped seat. The U-shaped seat is set with its opening facing downwards, such as a metal profile or steel plate, providing an installation base platform and protecting internal components. The rail lifting device is laterally centered on the U-shaped seat, so that the clamping force is evenly distributed to reduce the risk of off-center loading, improve lifting stability, and facilitate alignment with the center line of the rail; the rail clamping assembly 603 is located inside the U-shaped cavity of the U-shaped seat, directly clamping the lower rail, while being protected by the U-shaped structure to prevent external interference, making its space utilization more compact; the rail shifting device is located on the back of the U-shaped seat, improving integration and making it easier for operators to observe the rail shifting action.

[0070] In another embodiment, flexible buffers 609 are provided on both sides of the bottom of the U-shaped seat for placement on the rail support platform. The flexible buffers 609 are made of elastic material, such as rubber pads or nylon plates. The flexible buffers 609 are located on both sides of the bottom of the U-shaped seat, directly contacting the surface of the rail support platform. They are arranged in pairs to maintain balanced force. The entire mechanism spans the rail, with the U-shaped seat opening facing downwards and wrapping around the rail. The flexible buffers 609 on both sides of the bottom of the U-shaped seat contact the surface of the rail support platform. The flexible buffers 609 absorb vibration energy during construction, provide anti-slip friction, prevent the mechanism from slipping, and reduce wear on the surface of the rail support platform.

[0071] In a preferred embodiment, the rail clamping assembly 603 includes:

[0072] Mounting block;

[0073] Two rail clamps 6031 are positioned opposite each other, and their tops are hinged to the mounting block;

[0074] The gripper drive 6032 is connected at one end to one of the two rail grippers 6031 and at the other end to the other of the two rail grippers 6031, and is used to drive the two rail grippers 6031 to move towards or away from each other.

[0075] The rail clamps 6031 are in two sets, and the two sets of rail clamps 6031 are hinged to the mounting block via a hinge shaft passing through the mounting block. Each set of rail clamps 6031 includes two oppositely arranged rail clamps 6031. The tops of the two rail clamps 6031 in each set are hinged together by a hinge shaft. The two ends of the clamp drive member 6032 are respectively connected to the two rail clamps 6031, driving the two rail clamps 6031 to move towards or away from each other. Preferably, one end of the clamp drive member 6032 is hinged to the same side of the clamps of the two sets of lever clamps via a hinge shaft, and the other end of the clamp drive member 6032 is hinged to the other side of the clamps of the two sets of rail clamps 6031 via a hinge shaft, so as to save power, simplify the number of equipment, and optimize the space structure.

[0076] Correspondingly, the side wall of the U-shaped seat is provided with a strip-shaped clearance hole 6011 that extends through the wall thickness, and the strip-shaped clearance hole 6011 extends along the length direction of the U-shaped seat; the gripper drive 6032 is located in the strip-shaped clearance hole 6011; the gripper drive 6032 passes through the strip-shaped clearance hole 6011 and is connected to the two grippers; when the grippers open and close, the drive can slide back and forth and up and down in the strip-shaped hole to avoid structural interference; the strip-shaped hole plays a dual role of guidance and protection, allowing the drive to move freely while avoiding excessive exposure that could cause safety hazards.

[0077] This application also provides a ballastless track replacement device, including: the rail moving and positioning mechanism 600 described in any of the above embodiments.

[0078] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0079] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A rail moving and positioning mechanism, characterized in that, include: Positioning base; A rail lifting device, hinged to the positioning base, includes a rail lifting vertical drive assembly and a rail clamping assembly. The rail lifting vertical drive assembly is connected to the positioning base and the rail clamping assembly respectively, and is used to clamp and lift the rail. A rail-shifting device, fixed to the positioning base, includes a rail-shifting lateral drive assembly and a shift fork actuation assembly. The rail-shifting lateral drive assembly is connected to the positioning base and the shift fork actuation assembly respectively, and is used to shift the rail for lateral position adjustment.

2. The rail moving and positioning mechanism according to claim 1, characterized in that, The vertical drive assembly for lifting the rail includes: Vertical drive component for rail lifting; The first lead screw and nut transmission pair has its lead screw connected to the vertical drive component for lifting the rail, and its nut connected to the rail clamping assembly.

3. The rail moving and positioning mechanism according to claim 2, characterized in that, The rail lifting device also includes a rail lifting support, which is hinged above the positioning seat via a horizontal rotating shaft; The vertical drive component for lifting the rail is located on the rail support, and its extended end is connected to the rail clamping assembly.

4. The rail moving and positioning mechanism according to claim 1, characterized in that, The transverse drive assembly includes: Lateral drive component for the dial rail; The second lead screw and nut transmission pair has its lead screw connected to the transverse drive component of the shift rail, and its nut connected to the shift fork actuation component.

5. The rail moving and positioning mechanism according to claim 4, characterized in that, The rail shifting device also includes a rail shifting support and a tail end bearing, which are fixed to the lateral ends of the positioning seat body. The two ends of the lead screw of the second lead screw nut rotating pair are rotatably connected to the guide rail support and the tail end bearing, respectively.

6. The rail moving and positioning mechanism according to claim 1, characterized in that, The positioning seat is a U-shaped seat; The rail lifting device is located laterally in the middle of the U-shaped seat, and the rail clamping assembly is located inside the U-shaped cavity of the U-shaped seat; The dialing device is located on the back of the U-shaped base.

7. The rail moving and positioning mechanism according to claim 6, characterized in that, The bottom of each side of the U-shaped seat is provided with a flexible buffer for placing on the rail support platform.

8. The rail moving and positioning mechanism according to claim 6, characterized in that, The rail clamping assembly includes: Mounting block; Two rail clamps are positioned opposite each other, and their tops are hinged to the mounting block. The gripper drive unit has one end connected to one of the two rail grippers and the other end connected to the other of the two rail grippers, and is used to drive the two rail grippers to move towards or away from each other.

9. The rail moving and positioning mechanism according to claim 8, characterized in that, The side wall of the U-shaped seat is provided with a strip-shaped clearance hole that extends through the wall thickness, and the strip-shaped clearance hole extends along the length direction of the U-shaped seat; The gripper drive is located in the strip-shaped clearance hole.

10. A ballastless track replacement device, characterized in that, include: The rail moving and positioning mechanism according to any one of claims 1-9.

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