Height-adjustable medium-low speed magnetic levitation sleeper

Abstract

The utility model relates to a middle-low speed magnetic levitation sleeper with adjustable height, which can realize accurate height of the middle-low speed magnetic levitation sleeper and meet different requirements of various lines and working conditions on the height of the sleeper, a top support plate in a top seat is opposite to a bottom support plate in a base, the middle part of the top support plate is arched, and a groove is formed in the central part of the arch; a groove is formed in the center of the bottom supporting plate and is opposite to the groove in the arch-shaped center portion, the rotation directions of threads on the two sides of the threaded sleeve are opposite, the threaded sleeve is connected to the double-thread screw in a screwed mode and located in a space formed by the groove in the center of the bottom supporting plate and the groove in the arch-shaped center portion, and the two ends of the double-thread screw penetrate through the guide supporting holes to be connected with the wedge-shaped sliding seats respectively. The wedge-shaped sliding base moves left and right along the bottom supporting plate, and the two sides of the top supporting plate and the two sides of the bottom supporting plate are connected through splicing plates correspondingly. The device has the advantages that the elevation difference between the track beams is reduced or eliminated, the design is simple and practical, the problem of the elevation difference can be directly solved by directly adjusting the height of the sleeper, the maintenance and repair cost is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a height-adjustable medium- and low-speed maglev sleeper capable of achieving precise medium- and low-speed maglev sleeper height and meeting different sleeper height requirements of various lines and working conditions, and belongs to the field of medium- and low-speed maglev sleeper manufacturing. Background Art

[0002] Medium and low-speed maglev occupies a very important position in the field of new rail transportation. In the structural system of medium and low-speed maglev, sleepers are an important component. In actual use, they play a bearing and supporting role, thereby ensuring the track gauge and direction, maintaining the stability and safety of the track, and ensuring the safe operation of the train.

[0003] After extended operation, settlement of the track foundation may cause the track elevation to decrease. Bentonite contained in the foundation may increase the track elevation, leading to elevation differences between track beams or at the junctions between turnout beams and track beams. This elevation difference can adversely affect the track structure and train operations, necessitating appropriate adjustments and repairs. To address this issue, regular track elevation measurement and monitoring can be performed to promptly detect changes in elevation differences. This helps determine the extent of foundation settlement and the impact of bentonite, providing a basis for subsequent adjustments and repairs. Based on the monitoring results, track height differences can be adjusted to reduce or eliminate them, ultimately by changing the height of the sleepers or replacing track with different heights. This method can effectively minimize the impact of elevation differences on the track structure and train operations, ensuring safe train operation.

[0004] The height of existing sleepers used on low- and medium-speed maglev lines is typically not adjustable. This is because the height of maglev sleepers is determined based on the operating requirements of the maglev train and the design standards of the track foundation. The sleepers are also welded to a standard height, making them difficult to adjust and replace.

[0005] 1. CN214459248U, a medium- and low-speed maglev track system with variable track gauge, primarily addresses track gauge adaptability and how to adapt to rail vehicles with different track gauges, thereby reducing testing costs. This system utilizes a track system comprising a rail support platform, supporting sleepers, and a movable sleeper assembly. The movable sleeper assembly comprises a first movable sleeper, a second movable sleeper, and an adjustable mounting beam. Adjusting the mounting beam adjusts the spacing between the first and second movable sleepers, thereby accommodating rail vehicles with varying track gauges. The advantages of this design lie in its flexibility and adaptability, allowing for rapid adjustments as needed to meet the needs of different rail vehicle specifications.

[0006] 2. The adjustable, split, medium- and low-speed magnetic fastener system (referred to as the fastener system) primarily addresses the adjustment of the track structure in three dimensions (vertical, longitudinal, and transverse). The system comprises an anchoring structure and a clamping mechanism. The anchoring structure moves along the through-slots in the upper iron plate to achieve longitudinal adjustment of the track. The clamping mechanism achieves transverse adjustment of the track by replacing the gauge blocks with different boss positions. Vertical adjustment of the track can also be achieved by adjusting the height of the plate.

[0007] (1) Adjustment dimension: The fastener system can realize the vertical, longitudinal and lateral adjustment of the track at the same time, but it cannot solve the vertical adjustment, that is, it cannot solve the problem of elevation difference.

[0008] (2) Adjustment method: The fastener system is adjusted by adjusting the height adjustment plate, changing the installation position of the anchor structure on the through groove, and replacing the gauge block with different boss positions, but it cannot solve the problem of elevation difference.

[0009] (3) Application scenarios: The fastener system may be more suitable for situations where comprehensive adjustments to the track structure are required, such as track maintenance and reconstruction; but it cannot solve the problem of elevation difference. Summary of the Invention

[0010] Design purpose: To avoid the deficiencies in the background technology, design a method that can fundamentally solve the impact of elevation difference on the track structure and train operation of medium and low speed magnetic rails. By adjusting the height of the medium and low speed magnetic rail sleepers, the impact of elevation difference on train operation can be effectively reduced, ensuring that the train is more stable during operation and reducing bumps. At the same time, it can reduce the maintenance and repair costs of the train and improve the operation efficiency of the train. The height-adjustable sleepers can disperse the stress on the track structure, reduce the deformation and damage of the track structure, thereby extending the life of the track. It can meet the requirements of sleeper height for different lines and working conditions, and realize height-adjustable medium and low speed magnetic levitation sleepers with easy operation and high adjustment accuracy.

[0011] Design: The main structure of this utility model is designed to achieve precise adjustment of sleeper height to accommodate the varying sleeper requirements of medium- and low-speed maglev lines. The main structure features a base and top bolted together using spliced ​​plates, while the middle section utilizes a threaded sleeve and double-ended screw connection, forming an adjustable transmission mechanism. Rotating the double-ended screw allows it to move linearly within the sleeve, thereby driving the wedge-shaped slide to move left and right, ultimately achieving precise adjustment of sleeper height.

[0012] This new design achieves precise adjustment of sleeper height through the bolted connection between the base and top plates, the connection between the threaded sleeve and the double-headed screw in the middle section, and the kinematic adjustment mechanism of the wedge-shaped slide. This design offers advantages such as simple structure, easy installation, and high adjustment accuracy, making it suitable for various medium- and low-speed maglev lines.

[0013] Technical solution: A height-adjustable medium- and low-speed magnetic levitation sleeper, in which the top support plate in the top seat is opposite to the bottom support plate in the base, and the middle part of the top support plate is arched with a groove in the center of the arch, and the center of the bottom support plate is grooved and opposite to the groove in the center of the arch. The threads on both sides of the screw sleeve rotate in opposite directions, and the screw sleeve is screwed onto the double-headed screw and the screw sleeve is located in the space formed by the groove in the center of the bottom support plate and the groove in the center of the arch. The two ends of the double-headed screw pass through the guide support holes respectively and are connected to the wedge-shaped slide, and the wedge-shaped slide moves left and right along the bottom support plate, and the top support plate and the bottom support plate are connected on both sides by splicing plates.

[0014] Compared with the background technology, the present invention has the following advantages: first, the design is simple: the present invention comprises a base, a top seat, a double-headed screw, a screw sleeve and a wedge-shaped slide, which is easy to manufacture and has low implementation cost; second, the operation is simple and quick: by rotating the double-headed screw, it can be accurately moved in a straight line in the screw sleeve, and then the wedge-shaped slide is driven to move left and right, so as to realize precise height adjustment, and fully meet the different requirements of various lines and working conditions for the height of the sleepers; third, the height adjustment ability is strong, the present invention can adjust the height upward or downward, and fully meet the operating conditions along the line direction and different geological conditions; fourth, the scope of application is wide: the present invention is widely applicable to various types of medium and low-speed maglev lines and working conditions, and fully meet the diversified needs of the market; fifth, the connection is reliable: the present invention adopts two groups of high-strength bolts on the left and right, and the contact surface of the splicing plate with the base and the top seat is anti-slip treated, and the friction coefficient is greater than 0.3, which ensures its high stability and safety, thereby ensuring the smooth operation of the train; sixth, it is easy to install: the installation sequence is clear and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a height-adjustable medium and low-speed magnetic levitation sleeper.

[0016] Figure 2 yes Figure 1 Structural diagram.

[0017] Figure 3 yes Figure 2 Schematic side view of .

[0018] Figure 4 yes Figure 2 Schematic diagram of the AA section in the middle.

[0019] Figure 5 yes Figure 1 Schematic diagram of the middle top seat.

[0020] Figure 6 This is a schematic diagram of the base.

[0021] Figure 7 It is a schematic diagram of a wedge slide.

[0022] Figure 8 It is a schematic diagram of the combination of a double-headed screw and a screw sleeve.

[0023] Figure 9 This is a schematic diagram of the splicing plate. DETAILED DESCRIPTION

[0024] Refer to the attached Figure 1-9 The specific implementation of the utility model is described as follows:

[0025] A height-adjustable medium- and low-speed magnetic levitation sleeper, wherein the top support plate in the top seat 2 is opposite to the bottom support plate in the base 1, and the middle part of the top support plate is arched, with a groove in the center of the arch; the center of the bottom support plate is provided with a groove and is opposite to the groove in the center of the arch; the threads on both sides of the screw sleeve 5 rotate in opposite directions; the screw sleeve 5 is screwed onto the double-headed screw 4 and the screw sleeve 5 is located in the space formed by the groove in the center of the bottom support plate and the groove in the center of the arch; the two ends of the double-headed screw 4 are respectively connected to the wedge-shaped slide 3 through the guide support holes; the wedge-shaped slide 3 moves left and right along the bottom support plate; the top support plate and the bottom support plate are respectively connected on both sides by splicing plates 6.

[0026] The middle part of the top seat 2 is arched and consists of a straight side 2-1, a beveled side 2-2, a low straight side 2-3, a groove 2-4, a low straight side 2-3, a beveled side 2-2, and a straight side 2-1. Vertical waist holes 2-5 are symmetrically opened on both sides of the top support plate, forming F-shaped guide rail fixing holes 2-6 on both sides of the top plate in the top seat. The guide support hole plates 1-1 are vertically welded on both sides of the groove in the center of the bottom support plate, and there are bolt holes 1-2 on both sides for fixing the splicing plate 6. The two ends of the double-headed screw 4 are respectively connected to the groove end set screws of the wedge slide 3. The back of the wedge slide 3 is opened with two through grooves 3-1 on both sides, and the grooves 3-1 are stuck on the bottom support plate and move left and right along the bottom support plate.

[0027] (1) Bolting structure of the splicing plate 3 between the base 1 and the top 2: The base 1 and the top 2 are the basic components of the present invention. They are connected together by bolting the splicing plate 6 to form a stable support structure. This connection method not only ensures the firmness of the structure, but also facilitates installation and disassembly, thereby improving work efficiency.

[0028] Design of Splice Plate 6: Made of high-strength material, the splice plate offers excellent load-bearing capacity and fatigue resistance. Its shape and dimensions are precisely calculated to ensure a perfect match with the base and top. The contact surfaces between splice plate 6, base 1, and top 2 are treated with anti-slip treatment.

[0029] Bolting method: Bolts 8 are used to fix the joints between the splicing plate 6, the base 1 and the top seat 2. The number and arrangement of the bolts 8 are optimized to ensure the firmness and stability of the joints.

[0030] (2) The connection structure between the screw sleeve 5 and the double-headed screw rod 4 in the middle part: The middle part is the key to achieving the height adjustment of the sleeper. It connects the two double-headed screw rods through the screw sleeve 5 to form an adjustable transmission mechanism.

[0031] Sleeve 5 Design: Made of wear-resistant material, the sleeve 5 offers excellent durability and sliding performance. It features internal threads that match those of the double-start screw 4, converting the screw's rotational motion into linear motion. To ensure consistent lifting and lowering operation between the left and right sides, the threads and pitch on both sides of the sleeve 5 are meticulously designed to ensure exact alignment. Furthermore, the threads on both sides of the sleeve 5 rotate in opposite directions—left-handed on the left and right-handed on the right—ensuring consistent and stable lifting and lowering motion.

[0032] Double-headed screw 4: The double-headed screw 4 is the core component of this solution. One end of it is connected to the screw sleeve 5, and the other end is connected to the wedge-shaped slide 3. By rotating the double-headed screw, the double-headed screw 4 can move in a linear direction inside the screw sleeve 5, thereby driving the wedge-shaped slide 3 to move in the left and right directions.

[0033] (3) Movement adjustment mechanism of the wedge slide 3: The wedge slide 3 is a key component connecting the double-headed screw and the sleeper. It raises or lowers the top seat 2 through the movement of the double-headed screw 4, thereby achieving precise adjustment of the sleeper height.

[0034] Wedge-shaped design: The wedge-shaped slide 3 adopts a wedge-shaped structure, which can generate stable support force when in contact with the sleeper. This design not only improves the stability of the structure, but also reduces the potential shaking of the sleeper during adjustment.

[0035] Movement Adjustment: When the double-ended screw 4 is rotated, the wedge-shaped slide 3 is driven by the double-ended screw 4 to move left and right. By precisely controlling the rotation angle and speed of the double-ended screw 4, the sleeper height can be precisely adjusted. Furthermore, the stable support provided by the wedge-shaped slide 3 and the sleeper makes the adjustment process smoother and more reliable.

[0036] (4) Slotted concave end set screw 7: Fixing and adjustment: The slotted concave end set screw 7 is used to fix the wedge slide and the stud screw 4. By rotating the screw 7, the height and position of the wedge slide can be accurately adjusted, thereby achieving precise adjustment of the track height.

[0037] (5) Installation and use:

[0038] a) Sleeper installation sequence:

[0039] ① Installing the base 1: Determine the location, ensure the base is flat and stable, and then place and secure the base.

[0040] ②Install the screw sleeve 5 and the stud screw 4: Install the screw sleeve 5 on the base 1, ensuring that it is positioned correctly. Pass the stud screw 4 through the screw sleeve to ensure smooth rotation.

[0041] ③ Install the wedge-shaped slide 3: Prepare the wedge-shaped slide 3 and ensure that it is properly connected to the stud screw 4. Install the wedge-shaped slide 3 on the stud screw 4 to ensure smooth movement.

[0042] ④ Bolt the splicing plate 6: Prepare the splicing plate 6 for the base 1 and top 2, ensuring that the holes are aligned. Use bolts 8, washers 9, and nuts 10 to securely bolt the splicing plate 6 to the base 1 and top 2.

[0043] ⑤Debugging and testing: Rotate the double-headed screw 4 and observe the movement of the wedge slide 3 to ensure that the sleeper height can be accurately adjusted, and check and repair any abnormalities.

[0044] ⑥ Final fixation and inspection: Tighten all joints to ensure there is no looseness. Check whether the overall structure is stable, firm, and meets the design requirements.

[0045] b) After the sleeper is assembled, it is connected to the F-rail and foundation: The sleeper top is securely connected to the F-rail using high-strength connectors (such as bolts and pins), ensuring stable rail support and load transfer. The sleeper foundation is then connected to the rail support platform via pre-installed anchor bolts through a secondary pouring process, forming an integrated structure with the support platform and enhancing overall stability. This secondary pouring ensures a tight connection between the sleeper foundation and the support platform, providing solid support for the track.

[0046] c) Order and precautions for daily use:

[0047] ① Regular inspection and maintenance: Check the connection and fastening of the splicing plate and the screw sleeve to ensure that there is no looseness or damage. Clean the dust and oil on the transmission mechanism to keep it clean.

[0048] ②Operational specifications: When rotating the double-headed screw, follow the specified sequence and force to avoid excessive force. When adjusting the height of the sleeper, ensure that the transmission mechanism is stable and avoid operating in an unstable state.

[0049] ③ Lubrication and maintenance: Lubricate the transmission mechanism (screw sleeve and double-headed screw) regularly, use recommended lubricants, and follow the lubrication methods and cycles.

[0050] ④ Training and operation: Operators should receive relevant training and understand the product structure and operation methods. Untrained personnel are not allowed to operate without authorization.

[0051] ⑤Record and feedback: record product usage, failures and maintenance, identify problems and provide feedback in a timely manner.

[0052] It should be understood that although the above embodiments provide a relatively detailed textual description of the design ideas of the present invention, these textual descriptions are merely simple textual descriptions of the design ideas of the present invention, rather than limitations on the design ideas of the present invention. Any combination, addition or modification that does not exceed the design ideas of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A height-adjustable medium- and low-speed magnetic levitation sleeper, characterized by: The top support plate in the top seat (2) is opposite to the bottom support plate in the base (1), and the middle of the top support plate is arched, and the center of the arch has a groove. The center of the bottom support plate has a groove and is opposite to the groove in the center of the arch. The threads on both sides of the screw sleeve (5) rotate in opposite directions. The screw sleeve (5) is screwed onto the double-headed screw (4) and the screw sleeve (5) is located in a space formed by the groove in the center of the bottom support plate and the groove in the center of the arch. The two ends of the double-headed screw (4) pass through the guide support holes and are connected to the wedge-shaped slide (3). The wedge-shaped slide (3) moves left and right along the bottom support plate. The top support plate and the bottom support plate are connected on both sides by the splicing plate (6).

2. The height-adjustable medium- and low-speed magnetic levitation sleeper according to claim 1 is characterized in that: The middle portion of the top seat (2) is arched and sequentially consists of a straight edge (2-1), a beveled edge (2-2), a low straight edge (2-3), a groove (2-4), a low straight edge (2-3), a beveled edge (2-2), and a straight edge (2-1).

3. The height-adjustable medium- and low-speed magnetic levitation sleeper according to claim 1 is characterized in that: Vertical waist holes (2-5) are symmetrically opened on both sides of the top support plate, and F-shaped guide rail fixing holes (2-6) are opened on both sides of the top plate in the top seat.

4. The height-adjustable medium- and low-speed magnetic levitation sleeper according to claim 1 is characterized by: A guide support hole plate (1-1) is vertically welded to two sides of the groove in the center of the bottom support plate, and bolt holes (1-2) are provided on both sides for fixing the splicing plate (6).

5. The height-adjustable medium- and low-speed magnetic levitation sleeper according to claim 1 is characterized by: The two ends of the double-headed screw (4) are respectively connected to the wedge-shaped slide seat (3) with grooved end set screws.

6. The height-adjustable medium- and low-speed magnetic levitation sleeper according to claim 1 is characterized by: The back of the wedge-shaped sliding seat (3) is provided with through grooves (3-1) on both sides, and the grooves (3-1) are clamped on the bottom support plate and move left and right along the bottom support plate.

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