Longitudinal pushing-in rail moving and fixing device for curve section rail replacement operation

Abstract

A longitudinal pushing-in rail moving and fixing device for curve section rail replacement operation, the old rail is prone to be stuck due to the influence of the internal and external stress caused by the change of the curve radius and the friction force of the rail bottom. The utility model discloses a total support plate is equipped with a support sliding seat at two ends respectively, two old rails are equipped on the two support sliding seats, each support sliding seat is fixedly connected with the end of the total support plate, a support cross bar is arranged on the total support plate, and one positioning clamp is arranged at the two ends of the support cross bar. A support bottom plate is arranged in each support sliding seat and at the end of the total support plate, a support strip is arranged on the support bottom plate, two groups of vertical rolling plates are arranged on the support strip, a vertical double-side rolling clamping part is formed in each group of vertical rolling plates, a horizontal rolling assembly is arranged in each vertical double-side rolling clamping part in correspondence, the top of each horizontal rolling assembly is matched with the bottom of the old rail, and the bottom of each horizontal rolling assembly is connected on the support strip.

Description

Technical Field

[0001] This utility model specifically relates to a longitudinal track shifting and fixing device for track replacement operations on curved sections, belonging to the field of railway track technology. Background Technology

[0002] In railway track replacement operations on curved sections, the old rails are prone to jamming when inserted into the track center due to the internal and external stresses caused by changes in the curve radius and the friction at the bottom of the rails. Current processes require acetylene cutting of the old rails to release stress, cutting long rails into 50-100 meter short rails. This not only increases the number of welded joints during secondary welding by more than 60%, but also results in 85% of rail breakage accidents occurring at these joints. Furthermore, it wastes aluminothermic welding materials and consumes more than 50% of labor costs. At the same time, the old rails lack effective limiting devices after being inserted into the track center, and vibrations from passing trains can easily cause lateral or vertical encroachment, with the traditional encroachment rate reaching as high as 12%. The method of simply binding the sleepers with wire cannot meet the complex stress requirements. In addition, traditional track replacement relies on manual placement and segmented cutting, requiring more than three track maintenance windows to complete the work for a single rail section, resulting in an old rail reuse rate of less than 70%. Existing technologies have not solved the integration problems of longitudinal free expansion and contraction stress release, dynamic limiting and anti-intrusion, and rapid disassembly and assembly in old rails on curved sections, and lack a complete process solution that can adapt to different curve radii and rail types. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a longitudinal track-shifting and fixing device for track replacement operations on curved sections is provided to solve the above problems.

[0004] A longitudinal rail shifting and fixing device for rail replacement operations on curved sections includes a main support plate, a support crossbar, two support sliding seats, and two positioning clamps. The main support plate is horizontally arranged, and a support sliding seat is provided at each end of the main support plate. Two old rails are arranged side by side on the two support sliding seats. Each support sliding seat is fixedly connected to the end of the main support plate. The support crossbar is arranged on the main support plate along the width direction, and a positioning clamp that cooperates with the new rail is provided at each end of the support crossbar.

[0005] Each support sliding seat includes a support base plate, a support bar, two sets of vertical rolling plates, and two horizontal rolling components. The support base plate is set at the end of the total support plate along the width direction of the total support plate. The support base plate is provided with a support bar, and two sets of vertical rolling plates are arranged side by side on the support bar. Each set of vertical rolling plates forms a vertical double-sided rolling clamping part that cooperates with both sides of the old rail. Each vertical double-sided rolling clamping part is correspondingly provided with a horizontal rolling component. The top of each horizontal rolling component is arranged to cooperate with the bottom of the old rail, and the bottom of each horizontal rolling component is connected to the support bar.

[0006] As a preferred embodiment: each set of vertical rolling plates includes a rotating frame, a first roller, a fixed frame, and a second roller. The rotating frame is vertically mounted on one end of the support bar, and its bottom is hinged to the top of the support bar. The first roller is hinged inside the rotating frame, and its axial direction is the same as the thickness direction of the support bar. The fixed frame is vertically mounted in the middle of the support bar, and its bottom is fixedly connected to the top of the support bar. The second roller is hinged inside the fixed frame, and its axial direction is the same as the thickness direction of the support bar. A first rolling clamping wall is formed between the inner wall of the rotating frame and the rolling surface of the first roller, and a second rolling clamping wall is formed between the inner wall of the fixed frame and the rolling surface of the second roller. The double-sided rolling clamping portion is formed between the first rolling clamping wall and the second rolling clamping wall.

[0007] As a preferred embodiment: each horizontal rolling assembly includes multiple partitions and multiple third rollers. The length direction of the support bar is the same as the length direction of the support base plate. The top surface of the support bar is machined with a strip-shaped groove along its length direction. Multiple partitions are vertically arranged in the strip-shaped groove along its length direction. An installation cavity is formed between two adjacent partitions. A third roller is hinged in the installation cavity. The axial direction of the third roller is the same as the length direction of the support bar.

[0008] As a preferred option, the top of each partition is an upward-convex arc end.

[0009] As a preferred embodiment, multiple third rollers are spaced apart in multiple mounting cavities, with an empty mounting cavity corresponding to each two adjacent third rollers.

[0010] As a preferred embodiment: the longitudinal cross-sectional shape of the support base plate is an inverted L-shape, the support strip is provided on the horizontal side of the support base plate, and the vertical side of the support base plate is fixedly connected to the main support plate.

[0011] As a preferred embodiment, it also includes a binding and fastening component, which includes a rope winding shaft, a locking component, a binding wire rope, and a hook. A hanging ring is provided on one side of the main support plate, and a rope winding shaft is provided on the other side of the main support plate. A locking component is provided on the rope winding shaft. One end of the binding wire rope is provided on the rope winding shaft, and the other end of the binding wire rope is detachably connected to the hanging ring via a hook.

[0012] As a preferred option: a support lug is provided on each side of the main support plate, and each support lug is machined with a through hole along its thickness direction. The two through holes are coaxially arranged, and the support crossbar passes through the two through holes.

[0013] As a preferred embodiment: each positioning clamp includes a fixed clamp and a movable clamp. The bottom of the fixed clamp is fixedly fitted onto the support crossbar. The top of the fixed clamp is machined with a first clamping notch facing the movable clamp. The bottom of the movable clamp is fitted onto the support crossbar. The top of the movable clamp is machined with a second clamping notch facing the first clamping notch. The movable clamp reciprocates along the length of the support crossbar.

[0014] As a preferred embodiment: the bottom of the movable clamp is provided with a composite latch, which includes a clamping plate, a T-shaped stud, a pull plate, a screw nut, an arc-shaped block, and two forked plates. The clamping plate is an integral double-forked plate, which includes an arc-shaped block and two forked plates. The two forked plates are vertically arranged side by side at the bottom of the arc-shaped block, and the top of each forked plate is fixedly connected to the bottom of the arc-shaped block. The arc-shaped block has a first through hole along its thickness direction to cooperate with the support crossbar. An installation and removal gap is formed between the two forked plates. Each forked plate has a... The second through hole, the T-shaped stud is inserted between the two second through holes, the horizontal end of the T-shaped stud abuts against the outer wall of one of the two forked plates, the vertical end of the T-shaped stud passes through the two second through holes and is connected to the screw nut, the pull plate is set on the outer wall of one side of the clamping plate, when the screw nut and the T-shaped stud are in the loose state, the force applied to the pull plate drives the moving clamp to reciprocate along the length of the support crossbar, when the screw nut and the T-shaped stud are in the locked state, the moving clamp is fixed on the support crossbar.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model achieves a standardized positioning process between old and new rails through the cooperation of a main support plate, a support crossbar, two support sliding seats, and two positioning clamps. It forms a standardized positioning operation for the replacement of old and new rails, and achieves a combined effect of longitudinal free expansion and contraction stress release, dynamic limit and anti-intrusion, and rapid disassembly and assembly in the old rails on curved sections. It is easy to operate and has low difficulty, improves the standardization of the operation process during the replacement of old and new rails, and is suitable for widespread use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention, in which one of the two positioning clips is in an exploded state;

[0018] Figure 2 A three-dimensional structural diagram showing the connection relationship between the positioning clamp and the supporting crossbar;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the positioning clip;

[0020] Figure 4 A three-dimensional structural diagram of the support for the sliding seat;

[0021] Figure 5 This is a diagram illustrating the process of using the new and old rails in this utility model.

[0022] Figure 6 This is a diagram showing the usage state of the new and old rails in conjunction with the enclosure and fastening components of this utility model.

[0023] Figure 7 This is a three-dimensional structural diagram illustrating the connection relationship between the present invention and the enclosing fastening component;

[0024] Figure 8 This is a three-dimensional structural diagram showing the connection relationship between the present invention and the enclosure fastening component; the supporting crossbar is removed from the diagram.

[0025] Figure 9 This is a three-dimensional structural diagram showing the connection relationship between the rope winding shaft, locking components, and binding wire rope.

[0026] In the diagram: 1-Main support plate; 2-Support crossbar; 3-Support sliding seat; 3-1-Support base plate; 3-2-Support bar; 3-2-2-Partition plate; 3-3-Vertical rolling plate; 3-3-1-Rotating frame; 3-3-2-First roller body; 3-3-3-Fixed frame; 3-3-4-Second roller body; 3-4-Horizontal rolling assembly; 4-Positioning clamp; 4-1-Fixed clamp; 4-2-Moving clamp; 4-3-First clamping notch; 4-4-Second clamping notch; 6-Mounting cavity; 7-Third roller body; 8 - Enclosing and binding parts; 8-1- Rope winding shaft; 8-2- Locking parts; 8-3- Binding wire rope; 8-4- Hook; 9- Support ear; 10- Through hole; 11- Composite lock; 11-1- Clamping plate; 11-2- T-shaped stud; 11-3- Pull plate; 11-4- Tightening nut; 11-5- Arc block; 11-6- Forked plate; 11-7- First through hole; 11-8- Installation and removal gap; 11-9- Second through hole; 11-10- Shim; 19- Old rail; 20- New rail; 21- Sleeper. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0028] Specific implementation method one: Combining Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 This embodiment describes a longitudinal rail shifting and fixing device for rail replacement in curved sections, comprising a main support plate 1, a support crossbar 2, two support sliding seats 3, and two positioning clamps 4. The main support plate 1 is horizontally arranged, and a support sliding seat 3 is provided at each end of the main support plate 1. Two old rails 19 are arranged side by side on the two support sliding seats 3. Each support sliding seat 3 is fixedly connected to the end of the main support plate 1. The support crossbar 2 is arranged on the main support plate 1 along the width direction of the main support plate 1, and a positioning clamp 4 that cooperates with the new rail 20 is provided at each end of the support crossbar 2.

[0029] Both the new rail 20 and the old rail 19 need to be placed on the sleeper 21. This utility model can achieve a standardized and short-term positioning process for the new rail 20 and the old rail 19 placed at the predetermined position on the sleeper 21.

[0030] Each support sliding seat 3 includes a support base plate 3-1, a support bar 3-2, two sets of vertical rolling plates 3-3, and two horizontal rolling components 3-4. The support base plate 3-1 is set at the end of the total support plate 1 along the width direction of the total support plate 1. The support bar 3-2 is set on the support base plate 3-1. Two sets of vertical rolling plates 3-3 are arranged side by side on the support bar 3-2. Each set of vertical rolling plates 3-3 forms a vertical double-sided rolling clamping part that cooperates with both sides of the old rail 19. A horizontal rolling component 3-4 is correspondingly set in each vertical double-sided rolling clamping part. The top of each horizontal rolling component 3-4 is fitted with the bottom of the old rail 19, and the bottom of each horizontal rolling component 3-4 is connected to the support bar 3-2.

[0031] Specific Implementation Method Two: This implementation method is a further limitation of Specific Implementation Method One. In this implementation method, each set of vertical rolling plates 3-3 includes a rotating frame 3-3-1, a first roller body 3-3-2, a fixed frame 3-3-3, and a second roller body 3-3-4. The rotating frame 3-3-1 is vertically mounted on one end of the support bar 3-2. The bottom of the rotating frame 3-3-1 is hinged to the top of the support bar 3-2. The first roller body 3-3-2 is hinged inside the rotating frame 3-3-1. The axial direction of the first roller body 3-3-2 is in the same direction as the thickness direction of the support bar 3-2. The fixed frame 3-3-3 is vertical. A fixed frame 3-3-3 is fixedly connected to the top of the support bar 3-2 at the bottom of the support bar 3-2. A second roller 3-3-4 is hinged inside the fixed frame 3-3-3. The axial direction of the second roller 3-3-4 is the same as the thickness direction of the support bar 3-2. A first rolling clamping wall is formed between the inner wall of the rotating frame 3-3-1 and the rolling surface of the first roller 3-3-2. A second rolling clamping wall is formed between the inner wall of the fixed frame 3-3-3 and the rolling surface of the second roller 3-3-4. The double-sided rolling clamping part is formed between the first rolling clamping wall and the second rolling clamping wall. The double-sided rolling clamping part is used to clamp both sides of the old rail 19, realizing the rolling clamping effect on both sides of the old rail 19 and limiting its lateral movement.

[0032] Furthermore, the first roller 3-3-2 and the second roller 3-3-4 can be replaced with small ball joints to achieve rolling contact with the old track 19.

[0033] Specific Implementation Method 3: This implementation method is a further limitation of Specific Implementation Method 1. In this implementation method, each horizontal rolling component 3-4 includes multiple partitions 3-2-2 and multiple third rollers 7. The length direction of the support bar 3-2 is the same as the length direction of the support base plate 3-1. The top surface of the support bar 3-2 is processed with a strip-shaped groove 3-2-1 along its length direction. Multiple partitions 3-2-2 are vertically arranged in the strip-shaped groove 3-2-1 along its length direction. An installation cavity 6 is formed between two adjacent partitions 3-2-2. A third roller 7 is hinged in the installation cavity 6. The axial direction of the third roller 7 is the same as the length direction of the support bar 3-2.

[0034] In this embodiment, the arrangement of each horizontal rolling component 3-4 forms a multi-position rolling support effect on the bottom of the old rail 19. Combined with the arrangement of two sets of vertical rolling plates 3-3, a three-in-one U-shaped multi-position sliding limit method is formed for the old rail 19. This not only provides multi-position sliding support for the old rail 19, but also provides a stable sliding temporary positioning method for the old rail 19, which is conducive to the position adjustment of the old rail 19 and avoids corrosion and rust.

[0035] Specific Implementation Method Four: This implementation method is a further limitation of Specific Implementation Method One. The top of each partition 3-2-2 is an upwardly convex arc end. The shape of the partition 3-2-2 facilitates the multi-position bottom sliding support of the old rail 19. The arrangement of each third roller 7 can be coaxially connected by a connecting shaft, forming a distribution pattern in which the third rollers 7 are coaxially positioned, thereby improving the support effect for the coordinated rolling or sliding of various positions at the bottom of the old rail 19.

[0036] Specific Implementation Method Five: This implementation method further defines Specific Implementation Method One. Multiple third rollers 7 are spaced apart within multiple mounting cavities 6, with an empty mounting cavity 6 corresponding to each adjacent third roller 7. The spaced arrangement of the third rollers 7 controls the sliding support strength at the bottom of the old rail 19, preventing excessive sliding strength. The specific arrangement and quantity of each third roller 7 can be configured according to specific design requirements and the dimensions of the corresponding old rail 19.

[0037] Specific Implementation Method Six: This implementation method further defines Specific Implementation Method One. The longitudinal cross-sectional shape of the support base plate 3-1 is an inverted L-shape. The support strip 3-2 is provided on the horizontal side of the support base plate 3-1, and the vertical side of the support base plate 3-1 is fixedly connected to the main support plate 1. The form of the support base plate 3-1 can achieve a raised effect with a simple structural form.

[0038] Specific Implementation Method Seven: This implementation method is a further limitation of Specific Implementation Method One, and also includes a surrounding binding member 8. The surrounding binding member 8 includes a rope winding shaft 8-1, a locking member 8-2, a binding steel wire rope 8-3, and a hook 8-4. A hanging ring is provided on one side of the main support plate 1, and a rope winding shaft 8-1 is provided on the other side of the main support plate 1. A locking member 8-2 is provided on the rope winding shaft 8-1. One end of the binding steel wire rope 8-3 is provided on the rope winding shaft 8-1. When the binding steel wire rope 8-3 is not in use, it is wound around the rope winding shaft 8-1. When in use, the other end of the binding steel wire rope 8-3 is connected to the hanging ring through the hook 8-4 to achieve end positioning.

[0039] In this embodiment, the combination of the rope winding shaft 8-1 and the locking member 8-2 in the enclosing binding member 8 can be any existing ratchet locking device that can retract and extend the binding wire rope 8-3. The working principle of the rope winding shaft 8-1 and the locking member 8-2 is the same as that of the existing ratchet locking device. By releasing and tightening the binding wire rope 8-3, the binding and positioning of the two old rails 19 after sliding positioning is achieved. The dual composite positioning helps to improve the dynamic positioning stability of the old rails 19. In specific use, after the rope winding shaft 8-1 releases the binding wire rope 8-3, the end of the binding wire rope 8-3 is positioned by the connection between the hook 8-4 and the hanging ring. The other end of the binding wire rope 8-3 is locked by the locking member 8-2. The locking member 8-2 can also be replaced by a torsion spring, or the torsion spring can be configured in the rope winding shaft 8-1 to achieve the reset operation after the binding wire rope 8-3 is released.

[0040] In this embodiment, the working principle of the rope winding shaft 8-1 and the locking element 8-2 is consistent with the working principle of the existing ratchet lock. The locking element 8-2 includes a ratchet, an upper rotating shaft, and a pawl. The ratchet is coaxially arranged with the rope winding shaft 8-1, and a pawl is fitted on the ratchet. The pawl is driven to move down or up by the upper rotating shaft, fixing one end of the binding wire rope 8-3 to the rope winding shaft 8-1 and continuing to wind around the rope winding shaft 8-1. When the upper rotating shaft swings counterclockwise, it drives the pawl to insert into the ratchet tooth groove, pushing the ratchet to rotate and causing the binding wire rope 8-3 to contract. When the upper rotating shaft rotates clockwise, the anti-return pawl prevents the ratchet from rotating, and the pawl slides on the back of the teeth. This process allows the ratchet to achieve intermittent movement under the unidirectional swing of the upper rotating shaft, thereby driving the binding wire rope 8-3 to tighten. If it is necessary to loosen the binding wire rope 8-3, open the pawl and disengage it from the ratchet, so that the ratchet can rotate clockwise, and remove the binding wire rope 8-3 to complete the process of loosening the old rail 19.

[0041] Specific Implementation Method Eight: This implementation method is a further limitation of Specific Implementation Method One. A support lug 9 is provided on each side of the main support plate 1. Each support lug 9 has a through hole 10 processed along its thickness direction. The support lug 9 provides a position for positioning the support crossbar 2. The two through holes 10 are coaxially arranged, and the support crossbar 2 passes through the two through holes 10.

[0042] Specific Implementation Method Nine: This implementation method is a further limitation of Specific Implementation Method One. Each positioning clamp 4 includes a fixed clamp 4-1 and a movable clamp 4-2. The bottom of the fixed clamp 4-1 is fixedly fitted onto the support crossbar 2. The top of the fixed clamp 4-1 is machined with a first clamping notch 4-3, which faces the movable clamp 4-2. The bottom of the movable clamp 4-2 is fitted onto the support crossbar 2. The top of the movable clamp 4-2 is machined with a second clamping notch 4-4, which faces the first clamping notch 4-3. The movable clamp 4-2 reciprocates along the length direction of the support crossbar 2.

[0043] Furthermore, the first clamping notch 4-3 and the second clamping notch 4-4 are respectively machined with anti-slip textures to stabilize the clamping of the new rail 20, increase the contact friction, and thus increase the connection strength with the new rail 20.

[0044] Specific Implementation Method Ten: This implementation method is a further limitation of Specific Implementation Method One, combined with... Figure 1 As shown, the bottom of the movable clamp 4-2 is provided with a composite lock 11. The composite lock 11 includes a clamping plate 11-1, a T-shaped stud 11-2, a pull plate 11-3, a screw nut 11-4, an arc-shaped block 11-5, and two forked plates 11-6. The clamping plate 11-1 is an integral double-forked plate, which includes an arc-shaped block 11-5 and two forked plates 11-6. The two forked plates 11-6 are vertically arranged side by side at the bottom of the arc-shaped block 11-5. The top of each forked plate 11-6 is fixedly connected to the bottom of the arc-shaped block 11-5. The arc-shaped block 11-5 is machined with a first through hole 11-7 along its thickness direction to cooperate with the support crossbar 2. An installation and removal gap 11-8 is formed between the two forked plates 11-6. Each forked plate 11-6 is machined with a first through hole 11-7 along its thickness direction. Two through holes 11-9 are provided, and a T-shaped stud 11-2 is inserted between the two through holes 11-9. The inner wall of the horizontal end of the T-shaped stud 11-2 is abutted against the outer wall of one of the two forked plates 11-6 by a gasket 11-10. The vertical end of the T-shaped stud 11-2 passes through the two through holes 11-9 and is connected to the screw nut 11-4. The pull plate 11-3 is provided on one side of the outer wall of the clamping plate 11-1. When the screw nut 11-4 and the T-shaped stud 11-2 are in a loose state, the pull plate 11-3 is applied to drive the moving clamp 4-2 to reciprocate along the length of the support crossbar 2. When the screw nut 11-4 and the T-shaped stud 11-2 are in a locked state, the moving clamp 4-2 is fixed on the support crossbar 2.

Claims

1. A longitudinal rail shifting and fixing device for rail changing operations on curved sections, characterized in that: It includes a main support plate (1), a support crossbar (2), two support sliding seats (3) and two positioning clamps (4). The main support plate (1) is horizontally arranged. A support sliding seat (3) is provided at each end of the main support plate (1). Two old rails (19) are arranged side by side on the two support sliding seats (3). Each support sliding seat (3) is fixedly connected to the end of the main support plate (1). The support crossbar (2) is arranged on the main support plate (1) along the width direction of the main support plate (1). A positioning clamp (4) that cooperates with the new rail (20) is provided at each end of the support crossbar (2). Each support sliding seat (3) includes a support base plate (3-1), a support bar (3-2), two sets of vertical rolling plates (3-3) and two horizontal rolling components (3-4). The support base plate (3-1) is set at the end of the total support plate (1) along the width direction of the total support plate (1). The support base plate (3-1) is provided with a support bar (3-2). Two sets of vertical rolling plates (3-3) are arranged side by side on the support bar (3-2). Each set of vertical rolling plates (3-3) forms a vertical double-sided rolling clamping part that cooperates with both sides of the old rail (19). Each vertical double-sided rolling clamping part is correspondingly provided with a horizontal rolling component (3-4). The top of each horizontal rolling component (3-4) is arranged to cooperate with the bottom of the old rail (19). The bottom of each horizontal rolling component (3-4) is connected to the support bar (3-2).

2. The longitudinal pushing-in rail moving and fixing device for curve section rail replacement operation according to claim 1, characterized in that: Each set of vertical rolling plates (3-3) includes a rotating frame (3-3-1), a first roller (3-3-2), a fixed frame (3-3-3), and a second roller (3-3-4). The rotating frame (3-3-1) is vertically mounted on one end of the support bar (3-2). The bottom of the rotating frame (3-3-1) is hinged to the top of the support bar (3-2). The first roller (3-3-2) is hinged inside the rotating frame (3-3-1). The axial direction of the first roller (3-3-2) is the same as the thickness direction of the support bar (3-2). The fixed frame (3-3-3) is vertically mounted in the middle of the support bar (3-2). The bottom of the fixed frame (3-3-3) is fixedly connected to the top of the support bar (3-2). A second roller (3-3-4) is hinged inside the fixed frame (3-3-3). The axial direction of the second roller (3-3-4) is the same as the thickness direction of the support bar (3-2). A first rolling clamping wall is formed between the inner wall of the rotating frame (3-3-1) and the rolling surface of the first roller (3-3-2). A second rolling clamping wall is formed between the inner wall of the fixed frame (3-3-3) and the rolling surface of the second roller (3-3-4). The double-sided rolling clamping part is formed between the first rolling clamping wall and the second rolling clamping wall.

3. The longitudinal rail shifting and fixing device for rail replacement operations on curved sections according to claim 1, characterized in that: Each horizontal rolling assembly (3-4) includes multiple partitions (3-2-2) and multiple third rollers (7). The length direction of the support bar (3-2) is the same as the length direction of the support base plate (3-1). The top surface of the support bar (3-2) is machined with a strip groove (3-2-1) along its length direction. Multiple partitions (3-2-2) are vertically arranged in the strip groove (3-2-1) along its length direction. An installation cavity (6) is formed between two adjacent partitions (3-2-2). A third roller (7) is hinged in the installation cavity (6). The axial direction of the third roller (7) is the same as the length direction of the support bar (3-2).

4. A longitudinal rail-shifting and fixing device for rail replacement operations on curved sections according to claim 3, characterized in that: The top of each partition (3-2-2) is an upward-convex arc end.

5. A longitudinal rail-shifting and fixing device for rail replacement operations on curved sections according to claim 3 or 4, characterized in that: Multiple third roller bodies (7) are arranged at intervals in multiple mounting cavities (6), and an empty mounting cavity (6) is provided between two adjacent third roller bodies (7).

6. A longitudinal rail-shifting and fixing device for rail replacement operations on curved sections according to claim 3 or 4, characterized in that: The longitudinal cross-sectional shape of the support base plate (3-1) is an inverted L-shape. The support strip (3-2) is provided on the horizontal side of the support base plate (3-1), and the vertical side of the support base plate (3-1) is fixedly connected to the main support plate (1).

7. A longitudinal rail shifting and fixing device for rail replacement operations on curved sections according to claim 1, characterized in that: It also includes a binding and fastening component (8), which includes a rope winding shaft (8-1), a locking component (8-2), a binding steel wire rope (8-3), and a hook (8-4). A hanging ring is provided on one side of the main support plate (1), and a rope winding shaft (8-1) is provided on the other side of the main support plate (1). A locking component (8-2) is provided on the rope winding shaft (8-1). One end of the binding steel wire rope (8-3) is provided on the rope winding shaft (8-1), and the other end of the binding steel wire rope (8-3) is detachably connected to the hanging ring through the hook (8-4).

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