A kind of end plate structure of conventional high-speed magnetic levitation beam

Abstract

The present invention belongs to the technical field of beam gap devices for common high-speed maglev bridges, and specifically relates to a common high-speed maglev beam end slat structure, including a bridge pier, a T-shaped slat and two continuous beam bodies; the T-shaped slat includes a T-shaped slat track plate beam and a T-shaped slat small pier column connected to the bottom surface of the T-shaped slat track plate beam; the two ends of the T-shaped slat track plate beam are respectively arranged on two continuous beam bodies, and the top of the bridge pier is pre-embedded with a grip sleeve matching the T-shaped slat small pier column, the T-shaped slat small pier column passes through the beam gap between the two continuous beam bodies and extends into the grip sleeve, and the bottom of the T-shaped slat small pier column is connected to the top of the bridge pier. The present invention reduces the vibration of the electromagnet by improving the influence of the beam end angular deformation and reducing the beam gap, thereby improving the driving comfort of the maglev train and improving the safety and stability of high-speed driving.

Description

Technical Field

[0001] The invention belongs to the technical field of beam joint devices for conventional high-speed maglev bridges, and in particular relates to a conventional high-speed maglev beam end plate structure. Background Art

[0002] The Changdao high-speed maglev has extremely high requirements for the smoothness of the long spindle track. Relevant research shows that the maglev bow frame is greatly affected by the gap change and the beam end angle when passing through the pier top, and the electromagnet vibrates greatly. The main reason is the track unevenness caused by it, which is the bottleneck restricting the operation of high-speed trains. Therefore, reducing the change in the gap between the beams and reducing the unevenness of the protrusion at the beam end angle plays a very important role in improving the operation of the Changdao high-speed maglev train.

[0003] In order to overcome the problem of beam end corners, there is currently a method of setting beam end lap plates at the beam seams of the two beams. Although this reduces some of the smoothness problems caused by the beam end corners, its own weight is too small, and it will produce a large vibration response due to the driving power, and there is an unstable phenomenon of jumping. In the long run, the track in the beam end lap plate area will become loose and have other defects. In addition, the existing lap plate technology cannot ensure the equality, stability and reliability of the seams, and it is difficult to meet the high precision requirements below the millimeter level. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a conventional high-speed maglev beam end plate structure, which can ensure the equality and stability of the split seams and the stability of the T-type plate, improve the riding comfort of the maglev train, and enhance the safety and stability of high-speed driving.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is a conventional high-speed maglev beam end plate structure, including a bridge pier, a T-type plate and two continuous beam bodies; the T-type plate includes a T-type plate track plate beam and a T-type plate small pier column connected to the bottom surface of the T-type plate track plate beam; the two ends of the T-type plate track plate beam are respectively arranged on two continuous beam bodies, and the top of the bridge pier is pre-embedded with a gripping sleeve matching the T-type plate small pier column, the T-type plate small pier column passes through the beam seam between the two continuous beam bodies and extends into the gripping sleeve, and the bottom of the T-type plate small pier column is connected to the top of the bridge pier.

[0006] Furthermore, an anchor screw is embedded in the bottom of the small pier column of the T-shaped bridging plate; the top of the pier has a hollow portion, the holding sleeve is located above the hollow portion, and a first through hole is reserved on the bottom surface of the holding sleeve, and a second through hole is reserved on the pier portion between the holding sleeve and the hollow portion, and the bottom end of the anchor screw passes through the first through hole and the second through hole in sequence and then extends into the hollow portion and is fixed by a nut.

[0007] Furthermore, a cavity with an opening toward the hollow portion is provided on the pier portion on the top surface of the hollow portion, and the cavity is connected to the second through hole; a helical preload spring is installed in the cavity, and the bottom end of the anchor screw successively passes through the first through hole, the second through hole and the hollow cavity of the helical preload spring and then extends into the hollow portion and is fixed by the nut.

[0008] Furthermore, a cushion block is provided between the helical preload spring and the nut, and the cushion block is sleeved on the anchoring screw.

[0009] Furthermore, there are multiple anchoring screws, and the first through hole, the second through hole, the cavity, the helical preload spring and the nut all correspond to the anchoring screws one by one.

[0010] Furthermore, the top surfaces of the beam ends of the two continuous beam bodies that are close to each other are both provided with downwardly recessed step portions, and the two ends of the T-shaped slab track beam are respectively arranged on the step portions of the two continuous beam bodies.

[0011] Furthermore, a small T-shaped plate support is provided at the corner of the step portion, and both ends of the T-shaped plate track plate beam are respectively arranged on the small T-shaped plate supports on the step portions of the two continuous beam bodies.

[0012] Furthermore, functional components are installed on both sides of the T-shaped slab track beam along the bridge direction.

[0013] Furthermore, the mutually adjacent beam ends of the two continuous beam bodies are respectively installed on the bridge piers through longitudinal movable supports.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention allows the T-type pier of the T-type pier to pass through the beam seam between two continuous beams and extend to a certain depth in the pre-buried holding sleeve on the top surface of the pier, so that the T-type pier can only move vertically, and the T-type pier and the beam end seam are kept from vertical misalignment due to the corner. At the same time, the bottom of the T-type pier is connected to the top of the pier, and the T-type pier is anchored on the pier to ensure that the T-type pier does not jump due to its small weight, so that the T-type pier is sufficiently stable, which is conducive to the safety and stability of high-speed driving;

[0016] (2) The present invention installs a helical preload spring on the anchor screw and opens a cavity on the pier part on the top surface of the hollow part to accommodate the helical preload spring for upward and downward extension and contraction. The helical preload spring ensures that the T-type strap is subjected to a constant downward pulling force to resist the jumping tendency that may be caused by the vibration of the T-type strap. The preload force on the T-type strap can be adjusted by adjusting the height of the pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the application of the end plate structure of the conventional high-speed magnetic levitation beam provided in an embodiment of the present invention in a two-span one-unit continuous beam;

[0019] Figure 2 A cross-sectional view of a continuous beam body in a non-T-shaped buttressing area provided by an embodiment of the present invention;

[0020] Figure 3 A cross-sectional view of a continuous beam body in a T-shaped buttress area provided by an embodiment of the present invention;

[0021] Figure 4 A cross-sectional view of a T-type slab track beam at a beam end provided in an embodiment of the present invention;

[0022] Figure 5 A cross-sectional view of a T-type slab track beam at a beam seam provided in an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the end plate structure of a conventional high-speed magnetic levitation beam provided in an embodiment of the present invention;

[0024] In the figure: 1. continuous beam body; 2. bridge pier; 3. T-type scaffolding; 31. T-type scaffolding track slab beam; 32. T-type scaffolding small pier column; 4. T-type scaffolding small support; 5. longitudinal movable support; 6. holding sleeve; 7. anchor screw; 8. nut; 9. cavity; 10. spiral preload spring; 11. pad; 12. longitudinal fixed support. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] like Figure 1-Figure 6 As shown, this embodiment provides a conventional high-speed maglev beam end plate structure, including a pier 2, a T-type plate 3 and two continuous beam bodies 1; the T-type plate 3 includes a T-type plate track plate beam 31 and a T-type plate small pier 32 connected to the bottom surface of the T-type plate track plate beam 31; the two ends of the T-type plate track plate beam 31 are respectively arranged on the two continuous beam bodies 1, and the top of the pier 2 is pre-embedded with a holding sleeve 6 matching the T-type plate small pier 32, the T-type plate small pier 32 passes through the beam seam between the two continuous beam bodies 1 and extends into the holding sleeve 6, and the bottom of the T-type plate small pier 32 is connected to the top of the pier 2. In this embodiment, the T-type plate rail plate beam 31 of the T-type plate 3 transforms the beam end angle of the pier top into the beam end angle at the abutment, so that the short-wave roughness is halved. At the same time, the expansion and contraction of the beam joint is divided into two, so that the joint width is halved; then, the T-type plate small pier column 32 of the T-type plate 3 is passed through the beam joint between the two continuous beam bodies 1 and extended to a certain depth in the pre-buried holding sleeve 6 on the top surface of the pier 2, so that the T-type plate 3 can only move vertically, and the T-type plate 3 and the beam end joint are kept from vertical misalignment due to the angle, ensuring the equality and stability of the joint. At the same time, the bottom of the T-type plate small pier column 32 is connected to the top of the pier 2, and the T-type plate small pier column 32 is anchored on the pier 2, ensuring that the T-type plate 3 does not jump due to its small weight, so that the T-type plate 3 is stable enough to avoid the problem of disease in the beam end plate area.

[0029] Furthermore, an anchoring screw 7 is embedded in the bottom of the T-shaped pier 32; the top of the pier 2 has a hollow portion, the gripping sleeve 6 is located above the hollow portion, and a first through hole is reserved on the bottom surface of the gripping sleeve 6, and a second through hole is reserved on the part of the pier 2 between the gripping sleeve 6 and the hollow portion, and the bottom end of the anchoring screw 7 passes through the first through hole and the second through hole in sequence and then extends into the hollow portion and is fixed by a nut 8. Figure 5 and Figure 6 As shown, the top of the pier 2 of this embodiment has a hollow portion along the transverse direction of the bridge, and an anchor screw 7 is pre-embedded at the bottom of the small pier column 32 of the T-type bridging plate, and the bottom end of the anchor screw 7 has an external thread matching the nut 8. The bottom end of the anchor screw 7 is passed through the first through hole on the bottom surface of the holding sleeve 6 and the second through hole on the pier 2 between the holding sleeve 6 and the hollow portion, and then extends into the hollow portion and is tightened and fixed by the nut 8, thereby achieving the T-type bridging plate 3 being fixed to the pier top of the pier 2.

[0030] Furthermore, a cavity 9 with an opening toward the hollow part is provided on the pier 2 on the top surface of the hollow part, and the cavity 9 is connected with the second through hole; a helical preload spring 10 is installed in the cavity 9, and the bottom end of the anchoring screw 7 passes through the first through hole, the second through hole and the hollow cavity of the helical preload spring 10 in sequence, and then extends into the hollow part and is fixed by the nut 8. Figure 6 As shown, in this embodiment, a cavity 9 is provided on the pier 2 on the top surface of the hollow portion to accommodate the spiral preload spring 10 to extend and retract therein, and one end of the spiral preload spring 10 is abutted against the top surface of the cavity 9, and the other end is abutted against the nut 8. The spiral preload spring 10 ensures that the T-type strap 3 is subjected to a constant downward pulling force to resist the jumping tendency that may be caused by the vibration of the T-type strap 3.

[0031] Furthermore, a cushion block 11 is provided between the helical preload spring 10 and the nut 8, and the cushion block 11 is sleeved on the anchor screw 7. Figure 6 As shown, in this embodiment, a spacer 11 is installed on the anchor screw 7 between the helical preload spring 10 and the nut 8, and the preload force on the T-shaped strap 3 is adjusted by adjusting the height of the spacer 11.

[0032] Furthermore, there are multiple anchoring screws 7, and the first through hole, the second through hole, the cavity 9, the helical preload spring 10 and the nut 8 all correspond to the anchoring screws 7 one by one. In this embodiment, the number of anchoring screws 7 can be determined according to actual conditions, and the number and position of the first through hole on the bottom surface of the gripping sleeve 6, the second through hole on the pier 2 between the gripping sleeve 6 and the hollow part, the cavity 9, the helical preload spring 10, the nut 8 and the pad 11 all correspond to the anchoring screws 7 one by one.

[0033] Furthermore, the top surfaces of the two continuous beam bodies 1 that are close to each other are both provided with downwardly recessed step portions, and the two ends of the T-shaped slab rail beam 31 are respectively arranged on the step portions of the two continuous beam bodies 1. Figure 3 , Figure 4 and Figure 6 As shown, in this embodiment, downwardly recessed steps are symmetrically arranged on the top surfaces of the beam ends of two continuous beam bodies 1 that are close to each other to facilitate the placement of T-type slat rail plate beams 31. The top surface of the T-type slat rail plate beam 31 can be flush with the top surfaces of the continuous beam bodies 1 on its left and right sides.

[0034] Furthermore, a T-shaped plate support 4 is provided at the corner of the step portion, and both ends of the T-shaped plate rail beam 31 are respectively arranged on the T-shaped plate support 4 on the step portion of the two continuous beam bodies 1. Figure 4 and Figure 6 As shown, in this embodiment, T-shaped plate supports 4 are provided at the corners of the step portions of the two continuous beam bodies 1, and T-shaped plate supports 4 are provided at both ends of the step portion corners of each continuous beam body 1 in the transverse direction.

[0035] Furthermore, functional components are installed on both sides of the T-shaped rail beam 31 along the bridge direction. Figure 2-Figure 4 As shown, in this embodiment, the functional components on the continuous beam body 1 in the area of ​​the T-type slab track beam 31 are transferred to the T-type slab track beam 31, and the length of the T-type slab track beam 31 is 3.096 meters, which is the standard length of a functional component.

[0036] Furthermore, the ends of the two continuous beams 1 that are close to each other are respectively installed on the bridge piers 2 through longitudinal movable supports 5. The application of the end plate structure of the conventional high-speed magnetic levitation beam of this embodiment in a two-span one-unit continuous beam, such as Figure 1 As shown, T-shaped lap plates 3 are arranged on the piers 2 at the movable beam ends of the two continuous beam bodies 1, and the movable beam ends of the two continuous beam bodies 1 close to each other are respectively installed on the same pier 2 through longitudinal movable supports 5, and the middle parts of the two continuous beam bodies 1 are respectively installed on the corresponding piers through longitudinal fixed supports 12.

[0037] This embodiment can flatten the protruding sharp points between beams caused by corner deformation, thereby reducing the unevenness of the bridge surface (i.e., the track surface) to facilitate the stability of high-speed driving. At the same time, the beam gap between the two beam ends can be equally divided into two, so that the gap width is halved. In this way, the dynamic response of the electromagnet when the maglev spindle passes through the beam gap is effectively reduced, which is also beneficial to safe driving and the durability of related devices such as functional components and coil spindles. It can be used for conventional high-speed maglev railways with a speed of 600km / h.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed magnetic levitation beam end plate structure, characterized in that: It includes a bridge pier, a T-type slat and two continuous beam bodies; the T-type slat includes a T-type slat track beam and a T-type slat small pier connected to the bottom surface of the T-type slat track beam; the two ends of the T-type slat track beam are respectively arranged on the two continuous beam bodies, and the top of the pier is pre-embedded with a gripping sleeve matching the T-type slat small pier, the T-type slat small pier passes through the beam seam between the two continuous beam bodies and extends into the gripping sleeve, and the bottom of the T-type slat small pier is connected to the top of the pier; the top surfaces of the beam ends of the two continuous beam bodies that are close to each other are provided with downwardly concave step portions, and the two ends of the T-type slat track beam are respectively arranged on the step portions of the two continuous beam bodies; the top surface of the T-type slat track beam is flush with the top surfaces of the continuous beam bodies on its left and right sides.

2. The end plate structure of a high-speed magnetic levitation beam according to claim 1, characterized in that: An anchor screw is embedded in the bottom of the T-shaped pier column; the top of the pier has a hollow portion, the holding sleeve is located above the hollow portion, and a first through hole is reserved on the bottom surface of the holding sleeve, and a second through hole is reserved on the pier part between the holding sleeve and the hollow portion, and the bottom end of the anchor screw passes through the first through hole and the second through hole in sequence and then extends into the hollow portion and is fixed by a nut.

3. The end plate structure of a high-speed magnetic floating beam as claimed in claim 2, characterized in that: A cavity with an opening toward the hollow part is provided on the pier part on the top surface of the hollow part, and the cavity is connected with the second through hole; a helical preload spring is installed in the cavity, and the bottom end of the anchoring screw passes through the first through hole, the second through hole and the hollow cavity of the helical preload spring in sequence, then extends into the hollow part and is fixed by the nut.

4. The end plate structure of a high-speed magnetic levitation beam as claimed in claim 3, characterized in that: A cushion block is arranged between the spiral preload spring and the nut, and the cushion block is sleeved on the anchoring screw.

5. The end plate structure of a high-speed magnetic levitation beam as claimed in claim 3, characterized in that: There are multiple anchoring screws, and the first through hole, the second through hole, the cavity, the spiral preload spring and the nut all correspond to the anchoring screws one by one.

6. The end plate structure of a high-speed magnetic levitation beam according to claim 1, characterized in that: A T-shaped plate support is provided at the corner of the step portion, and the two ends of the T-shaped plate track plate beam are respectively arranged on the T-shaped plate support on the step portions of the two continuous beam bodies.

7. The end plate structure of a high-speed magnetic levitation beam according to claim 1, characterized in that: Functional components are installed on both sides of the T-shaped track beam along the bridge direction.

8. The end plate structure of a high-speed magnetic levitation beam as claimed in claim 1, characterized in that: The mutually adjacent beam ends of the two continuous beam bodies are respectively installed on the bridge piers through longitudinal movable supports.

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