Movable steel sleepers and beam end telescopic devices for large displacement telescopic devices

Abstract

The present invention provides a movable steel sleeper for a large displacement telescopic device and a beam end telescopic device. The movable steel sleeper for a large displacement telescopic device includes: a movable steel sleeper body including a top plate and a web, a first mounting through-hole is provided on the top plate, and a mounting groove is provided on the web; a mounting sleeve, at least partially disposed in the mounting groove, the mounting sleeve having a mounting hole corresponding to the first mounting through-hole; a first locking structure, one end of which passes through the first mounting through-hole and is connected to the mounting hole; two positioning protrusions are provided on the outer wall surface of the mounting sleeve, the two positioning protrusions are arranged in sequence at intervals, one of the positioning protrusions abuts against the first side surface of the web, and the other positioning protrusion abuts against the second side surface of the web, so as to clamp the web between the two positioning protrusions, wherein the first side surface and the second side surface are arranged relative to each other in the thickness direction of the web. Through the technical solution of the present invention, the mounting sleeve can be positioned so that the mounting hole is aligned with the first mounting through-hole, which is convenient for connection.

Description

Technical Field

[0001] The present invention relates to the technical field of railway bridges and tracks, and in particular to a movable steel sleeper for a large-displacement telescopic device and a beam end telescopic device. Background Art

[0002] Beam-end expansion joints are crucial bridge components. They are a general term for various devices installed at expansion joints on bridge decks to ensure smooth and safe passage of vehicles across the bridge and accommodate structural deformation. They effectively ensure the continuity and smoothness of the track. They are typically installed between the main bridge and approach spans of railway bridges to ensure track stability during bridge expansion and contraction. Required functions of expansion joints include: 1. Sliding capability to accommodate bridge expansion and contraction; 2. Sufficient vertical rigidity in the sliding area to support train passage; and 3. Sufficient lateral rigidity to ensure track stability.

[0003] Existing telescopic devices include longitudinal beams, fixed steel sleepers, movable steel sleepers, steel sleeper connecting plates, scissor fork devices, and iron buckle systems. The connection between the movable steel sleeper and the longitudinal beam, or between the movable steel sleeper and the rail, is achieved through the connection of bolts and sleeves. Specifically, the movable steel sleeper includes a connected top plate and a web plate. The top plate is provided with a mounting through-hole, the web is provided with a mounting groove, and the sleeve is disposed in the mounting groove. The sleeve is provided with a mounting hole. Bolts pass through the mounting through-hole, then pass into the mounting hole and connect to the sleeve, thereby connecting the movable steel sleeper to the longitudinal beam or the movable steel sleeper to the rail.

[0004] However, since the sleeve has a cylindrical outer surface, when the sleeve is installed in the installation groove, the installation hole on the sleeve and the installation through hole are not easy to align, resulting in inconvenient connection between the bolt and the sleeve. Summary of the Invention

[0005] The main purpose of the present invention is to provide a movable steel sleeper and a beam end telescopic device for a large displacement telescopic device, which can position the installation sleeve so that the installation hole is aligned with the first installation through hole for easy connection.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a movable steel sleeper for a large-displacement telescopic device is provided, including: a movable steel sleeper main body, including a top plate and a web connected to the top plate, the web is located below the top plate, a first mounting through-hole is provided on the top plate, and a mounting groove is provided on the web corresponding to the first mounting through-hole; a mounting sleeve, at least partially arranged in the mounting groove, the mounting sleeve has a mounting hole corresponding to the first mounting through-hole; a first locking structure, one end of the first locking structure passes through the first mounting through-hole and is connected to the mounting hole; wherein, two positioning protrusions are provided on the outer wall surface of the mounting sleeve, the two positioning protrusions are arranged in sequence at intervals, one of the positioning protrusions abuts against the first side surface of the web, and the other positioning protrusion abuts against the second side surface of the web, so as to clamp the web between the two positioning protrusions, wherein the first side surface and the second side surface of the web are relatively arranged in the thickness direction of the web.

[0007] Furthermore, the side walls of the two positioning protrusions and a portion of the outer wall of the mounting sleeve together form a positioning groove, and a portion of the web is clamped in the positioning groove.

[0008] Furthermore, the positioning groove extends along the axial direction of the mounting hole.

[0009] Furthermore, the mounting sleeve has a first side and a second side arranged opposite to each other along a first direction, and positioning protrusions are provided on the first side and the second side of the mounting sleeve, wherein an angle is formed between the first direction and the thickness direction of the web.

[0010] Furthermore, the first locking structure includes a first bolt, and the mounting hole is a through hole with a thread on the inner wall surface; the first end of the first bolt is provided with a first through hole, and there is an angle between the extension direction of the axis of the first through hole and the extension direction of the axis of the first bolt; the movable steel pillow for the large displacement telescopic device also includes a first anti-loosening part; the first end of the first bolt passes through the first mounting through hole and the mounting hole in sequence, the first bolt is threadedly connected to the mounting sleeve, the first anti-loosening part is passed through the first through hole, and the length dimension of the first anti-loosening part is greater than the radial dimension of the mounting hole.

[0011] Furthermore, a first avoidance groove for avoiding the first anti-loosening component is provided at the bottom of the mounting sleeve. The first avoidance groove is connected to the mounting hole, and an angle is formed between an extension direction of the first avoidance groove and a thickness direction of the web.

[0012] Furthermore, a plurality of first through holes are provided on the first end of the first bolt. The plurality of first through holes are sequentially spaced apart along the axis direction of the first bolt, and an angle is formed between the axes of at least two of the first through holes.

[0013] Furthermore, a second through hole is provided on the outer wall surface of the mounting sleeve, the positioning protrusion is spaced apart from the second through hole, and the second through hole is communicated with the mounting hole.

[0014] Furthermore, the mounting sleeve has a third side and a fourth side arranged opposite to each other along the second direction, and a second through hole is provided on the third side and the fourth side of the mounting sleeve, wherein there is an angle between the second direction and the thickness direction of the web; and / or, the second through hole is an elongated hole, and the elongated hole extends along the axial direction of the mounting hole.

[0015] According to another aspect of the present invention, a beam end expansion and contraction device is provided, comprising the above-mentioned movable steel sleeper for the large-displacement expansion and contraction device.

[0016] By applying the technical solution of the present invention, two positioning protrusions are provided on the outer wall surface of the mounting sleeve, one of the positioning protrusions abuts against the first side surface of the web, and the other positioning protrusion abuts against the second side surface of the web, so that the web can be clamped between the two positioning protrusions, so that the mounting sleeve can be accurately installed in the mounting groove, thereby realizing the positioning of the mounting sleeve, so that the mounting hole can be aligned with the first mounting through hole, and the first locking structure is convenient for passing through the first mounting through hole and then connecting with the mounting hole. In other words, the first locking structure can be conveniently connected to the mounting sleeve, and then the movable steel sleeper body can be conveniently and quickly connected to the component to be installed, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 A schematic structural diagram of an embodiment of a beam end expansion and contraction device according to the present invention is shown;

[0019] Figure 2 Shown Figure 1 A cross-sectional view of a portion of the structure of the beam end expansion device;

[0020] Figure 3 Shown Figure 2 An enlarged view of point A of the beam end expansion joint;

[0021] Figure 4 Shown Figure 2 An enlarged view of point B of the beam end expansion joint;

[0022] Figure 5 Shown Figure 1 A schematic diagram of a portion of the structure of a movable steel sleeper for a large displacement telescopic device of a beam end telescopic device;

[0023] Figure 6 Shown Figure 5 A front view of a partial structure of a movable steel sleeper for a large displacement telescopic device;

[0024] Figure 7 Shown Figure 6 The CC-direction cross-sectional view of the movable steel sleeper for the large displacement telescopic device;

[0025] Figure 8 Shown Figure 6 DD-direction cross-sectional view of the movable steel sleeper for the large displacement telescopic device;

[0026] Figure 9 Shown Figure 5 A schematic diagram of the three-dimensional structure of the mounting sleeve of the movable steel pillow for the large displacement telescopic device;

[0027] Figure 10 Shown Figure 9 A schematic structural diagram of an angle of the mounting sleeve;

[0028] Figure 11 Shown Figure 10 A top view of the mounting sleeve;

[0029] Figure 12 Shown Figure 5 A schematic structural diagram of a first locking structure of a movable steel sleeper for a large displacement telescopic device;

[0030] Figure 13 Shown Figure 12 A partial structural diagram of a first locking structure;

[0031] Figure 14 Shown Figure 5 A schematic structural diagram of a top plate of a movable steel sleeper body of a movable steel sleeper for a large displacement telescopic device;

[0032] Figure 15 Shown Figure 14 A top view of the top plate;

[0033] Figure 16 Shown Figure 5 A schematic structural diagram of the web of a movable steel sleeper main body of a movable steel sleeper for a large displacement telescopic device; and

[0034] Figure 17 Shown Figure 16 Top view of the web.

[0035] The above drawings include the following reference numerals:

[0036] 10. Movable steel sleeper body; 11. Top plate; 12. Web plate; 13. First mounting through hole; 14. Mounting groove; 15. Second mounting through hole; 16. Bottom plate; 17. Reinforcing rib; 20. Mounting sleeve; 21. Mounting hole; 22. Positioning groove; 23. First avoidance groove; 24. Second through hole; 25. Positioning protrusion; 30. First locking structure; 31. First bolt; 32. First through hole; 40. Second locking structure; 41. Second bolt; 42. Nut; 43. Third through hole; 44. Second avoidance groove; 50. First anti-loosening member; 60. Second anti-loosening member; 100. Movable steel sleeper for large displacement telescopic device. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0039] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0040] Beam-end expansion joints are crucial bridge components. They are a general term for various devices installed at expansion joints on bridge decks to ensure smooth and safe passage of vehicles across the bridge and accommodate structural deformation. They effectively ensure the continuity and smoothness of the track. They are typically installed between the main bridge and approach spans of railway bridges to ensure track stability during bridge expansion and contraction. Required functions of expansion joints include: 1. Sliding capability to accommodate bridge expansion and contraction; 2. Sufficient vertical rigidity in the sliding area to support train passage; and 3. Sufficient lateral rigidity to ensure track stability.

[0041] The existing telescopic device includes longitudinal beams, fixed steel sleepers, movable steel sleepers, steel sleeper connecting plates, scissor fork devices and iron buckle systems.

[0042] The movable steel sleeper is an important component of the beam end expansion device, which is connected to the scissor fork device, longitudinal beam and rail through a bolt pair and iron buckle system.

[0043] The movable steel sleeper is connected to the longitudinal beam through a buckle system. The buckle system includes a buckle pressure block, a buckle buffer pad, a movable steel sleeper buckle, a buckle gasket, a buckle sliding pad and a buckle height adjustment pad, which are connected in sequence through buckle bolts.

[0044] The movable steel sleeper is connected to the rail through the rail support fastener. The steel sleeve of the rail support fastener is located on the web of the movable steel sleeper. The steel bolts of the rail support fastener are tightened through the rail support, the mounting holes on the top plate of the movable steel sleeper, the rubber pad and the steel sleeve to achieve the connection between the movable steel sleeper and the rail.

[0045] A mounting through hole is provided on the top plate of the movable steel sleeper, a mounting groove is provided on the web, a sleeve is arranged in the mounting groove, a mounting hole is provided on the sleeve, and a bolt passes through the mounting through hole and is connected to the mounting hole to connect the movable steel sleeper to the longitudinal beam or the movable steel sleeper to the rail.

[0046] However, since the sleeve has a cylindrical outer surface, when the sleeve is installed in the mounting groove, the mounting hole on the sleeve is difficult to align with the mounting through hole, resulting in an inconvenient and unstable connection between the bolt and the sleeve. Impurities that fall into the closed cylindrical sleeve are also difficult to clean, affecting the connection quality.

[0047] In order to solve the above problems, the present invention and its embodiments provide a movable steel sleeper for a large-displacement telescopic device and a beam end telescopic device.

[0048] It should be noted that the above-mentioned "displacement" refers to the displacement of the telescopic device where the movable steel sleeper is located as the bridge expands and contracts, and the "large displacement" refers to the expansion and contraction of the telescopic device reaching ±600mm or more, among which the movable steel sleeper in the beam joint and the telescopic device coordinate the displacement as a whole.

[0049] It should be noted that, in the embodiment of the present invention, the component to be installed is a longitudinal beam or a rail.

[0050] like Figures 2 to 9 as well as Figure 16 and Figure 17As shown, in the embodiment of the present invention, the movable steel sleeper 100 for a large displacement telescopic device includes a movable steel sleeper body 10, a mounting sleeve 20 and a first locking structure 30. The movable steel sleeper body 10 includes a top plate 11 and a web 12 connected to the top plate 11. The web 12 is located below the top plate 11. The top plate 11 is provided with a first mounting through hole 13. The web 12 is provided with a mounting groove 14 corresponding to the first mounting through hole 13. At least part of the mounting sleeve 20 is provided in the mounting groove 14. The mounting sleeve 20 has a locking structure corresponding to the first mounting through hole 13. Corresponding mounting holes 21; one end of the first locking structure 30 passes through the first mounting through hole 13 and is connected to the mounting hole 21; wherein, two positioning protrusions 25 are provided on the outer wall surface of the mounting sleeve 20, and the two positioning protrusions 25 are arranged in sequence at intervals, one of the positioning protrusions 25 abuts against the first side surface of the web 12, and the other positioning protrusion 25 abuts against the second side surface of the web 12 to clamp the web 12 between the two positioning protrusions 25, wherein the first side surface and the second side surface of the web 12 are arranged relative to each other in the thickness direction of the web 12.

[0051] In the above arrangement, a mounting hole 21 is provided on the mounting sleeve 20, and at least part of the mounting sleeve 20 is arranged in the mounting groove 14 on the web 12, and the web 12 has a supporting effect on the mounting sleeve 20; the top plate 11 is connected to the web 12, and the mounting sleeve 20 is installed in the mounting groove 14, and the movement of the mounting sleeve 20 in the vertical direction can be limited; a first mounting through hole 13 is provided on the top plate 11, and one end of the first locking structure 30 passes through the first mounting through hole 13 and is connected to the mounting hole 21, so that the first locking structure 30 is connected to the mounting sleeve 20. Through the connection between the first locking structure 30 and the mounting sleeve 20, the purpose of connecting the movable steel sleeper body 10 with the component to be installed (for example, connecting the movable steel sleeper body with the longitudinal beam, or connecting the movable steel sleeper body with the rail) can be achieved.

[0052] In an embodiment of the present invention, two positioning protrusions 25 are provided on the outer wall surface of the mounting sleeve 20, one of the positioning protrusions 25 abuts against the first side surface of the web 12, and the other positioning protrusion 25 abuts against the second side surface of the web 12, so that the web 12 can be clamped between the two positioning protrusions 25, so that the mounting sleeve 20 can be accurately installed in the mounting groove 14, and the positioning of the mounting sleeve 20 is realized, so that the mounting hole 21 can be aligned with the first mounting through hole 13, so that the first locking structure 30 can pass through the first mounting through hole 13 and connect with the mounting hole 21. That is to say, the first locking structure 30 can be conveniently connected to the mounting sleeve 20, and then the movable steel sleeper body 10 can be conveniently and quickly connected to the component to be installed, thereby improving work efficiency.

[0053] In an embodiment of the present invention, two positioning protrusions 25 are arranged in sequence at intervals. This arrangement, on the one hand, facilitates the clamping of the web 12 by the two positioning protrusions 25 to achieve positioning of the mounting sleeve 20. On the other hand, the positioning protrusions 25 can be reasonably arranged and the positioning protrusions 25 can be easily processed.

[0054] In an embodiment of the present invention, in the thickness direction of the web 12, the web 12 has a first side surface and a second side surface that are relatively arranged, a positioning protrusion 25 abuts against the first side surface of the web 12, and the other positioning protrusion 25 abuts against the second side surface of the web 12. The two positioning protrusions 25 can clamp the web 12 along the thickness direction of the web 12 to achieve the positioning of the mounting sleeve 20. The two positioning protrusions 25 can limit the movement of the mounting sleeve 20 relative to the web 12 along the thickness direction of the web 12, so that the mounting sleeve 20 is fixedly installed in the mounting groove 14, the connection is firm, and the connection stability is improved.

[0055] It should be noted that, in the embodiment of the present invention, the thickness direction of the web 12 is Figure 17 The up and down direction of the paper.

[0056] Preferably, the mounting sleeve 20 is made of steel. Preferably, the mounting sleeve 20 is made of 45 steel and is heat treated.

[0057] like Figure 9 and Figure 11 As shown, in the embodiment of the present invention, the side walls of the two positioning protrusions 25 and a portion of the outer wall of the mounting sleeve 20 together form a positioning groove 22 , and a portion of the web 12 is clamped in the positioning groove 22 .

[0058] By setting the positioning groove 22, the installation sleeve 20 can be easily installed in the installation groove 14, and part of the structure of the web 12 can be stuck in the positioning groove 22 to prevent the installation sleeve 20 from moving along the thickness direction of the web 12, thereby achieving the positioning of the installation sleeve 20.

[0059] like Figure 9 and Figure 11 As shown, in the embodiment of the present invention, the positioning groove 22 extends along the axial direction of the mounting hole 21 .

[0060] In the above arrangement, the web 12 is positioned below the top plate 11, and one end of the first locking structure 30 extends through the first mounting hole 13 and connects with the mounting hole 21. In other words, one end of the first locking structure 30 extends from the top to the bottom through the first mounting hole 13 and then connects with the mounting hole 21. Arranging the positioning groove 22 to extend along the axis of the mounting hole 21 increases the contact area between the inner wall of the positioning groove 22 and the web 12, thereby improving the positioning of the mounting sleeve 20.

[0061] like Figures 9 to 11 As shown, in an embodiment of the present invention, the mounting sleeve 20 has a first side and a second side arranged opposite to each other along a first direction, and positioning protrusions 25 are provided on the first side and the second side of the mounting sleeve 20, wherein there is an angle between the first direction and the thickness direction of the web 12.

[0062] In the above arrangement, positioning protrusions 25 are provided on both the first and second sides of the mounting sleeve 20. The mounting sleeve 20 can be positioned by both the positioning protrusions 25 provided on the first side of the mounting sleeve 20 and the positioning protrusions 25 provided on the second side of the mounting sleeve 20. This arrangement improves the positioning effect, allowing the mounting hole 21 to be more accurately aligned with the first mounting through hole 13, facilitating connection and improving work efficiency.

[0063] like Figure 11 As shown, in the embodiment of the present invention, two positioning protrusions 25 are provided on the first side of the mounting sleeve 20. These two positioning protrusions 25 and a portion of the outer wall surface of the first side of the mounting sleeve 20 together form a positioning groove 22. In addition, the two positioning protrusions 25 are spaced apart along the thickness direction of the web 12. Along the thickness direction of the web 12, a portion of the structure of the web 12 is clamped within the positioning groove 22. On the second side of the mounting sleeve 20, two positioning protrusions 25 are provided. These two positioning protrusions 25 and a portion of the outer wall surface of the second side of the mounting sleeve 20 together form another positioning groove 22. In addition, the two positioning protrusions 25 are spaced apart along the thickness direction of the web 12. Along the thickness direction of the web 12, a portion of the structure of the web 12 is clamped within the positioning groove 22.

[0064] In the embodiment of the present invention, the first direction is perpendicular to the thickness direction of the web 12 , that is, the angle between the first direction and the thickness direction of the web 12 is 90 degrees.

[0065] Of course, in an alternative embodiment of the present application, it can also be arranged according to actual needs: a plurality of (a plurality of two or more) positioning protrusions 25 are provided on the first side of the mounting sleeve 20; this arrangement includes at least two situations, one of which is that the plurality of positioning protrusions 25 are arranged at intervals along the second direction, and any two positioning protrusions 25 of the plurality of positioning protrusions 25 can define a positioning groove 22 for clamping the web 12. The length of the positioning protrusions 25 along the first direction can be limited according to actual needs, so that positioning protrusions 25 with different lengths along the first direction define positioning grooves 22 of different sizes. In this way, one side is arranged The surface can satisfy the requirement that two positioning protrusions 25 define a positioning groove 22 to clamp the web 12 and achieve the purpose of positioning. On the other hand, it can avoid the problem that the positioning protrusion 25 located between the above-mentioned two positioning protrusions 25 interferes with the positioning groove 22 to clamp the web 12; another situation is: multiple positioning protrusions 25 extend along the axial direction of the mounting hole 21, a part of the multiple positioning protrusions 25 abuts the first side surface of the web 12, and another part of the multiple positioning protrusions 25 abuts the second side surface of the web 12 to clamp the web 12 between the multiple positioning protrusions 25; of course, it can also be a combination of the above two situations, which will not be repeated here. Of course, according to actual needs, multiple (a plurality of two or more) positioning protrusions 25 can be provided on the second side of the mounting sleeve 20. The setting of the multiple positioning protrusions 25 on the second side of the mounting sleeve 20 can refer to the setting of the multiple positioning protrusions 25 on the first side of the mounting sleeve 20, which will not be repeated here. According to actual needs, the specific arrangement of the multiple positioning protrusions 25 on the second side of the mounting sleeve 20 can be the same as or different from the specific arrangement of the multiple positioning protrusions 25 on the first side of the mounting sleeve 20 .

[0066] Existing telescopic devices use steel bolts connected to steel sleeves. This connection is weak, and without any protection against a loss of tightening force, the track structure's vibrations during operation can cause the bolts to loosen further, increasing the risk of bolts coming loose. Furthermore, if water accumulates in the steel sleeve, it can cause corrosion, reducing the tightening force between the bolts and sleeve, compromising the connection quality and further increasing the risk of bolts coming loose.

[0067] like Figure 2 、 Figure 3 、 Figure 12 and Figure 13As shown, in an embodiment of the present invention, the first locking structure 30 includes a first bolt 31, and the mounting hole 21 is a through hole with a thread on the inner wall surface; the first end of the first bolt 31 is provided with a first through hole 32, and the extension direction of the axis of the first through hole 32 and the extension direction of the axis of the first bolt 31 have an angle; the movable steel pillow 100 for a large displacement telescopic device also includes a first anti-loosening part 50; the first end of the first bolt 31 passes through the first mounting through hole 13 and the mounting hole 21 in sequence, the first bolt 31 is threadedly connected to the mounting sleeve 20, the first anti-loosening part 50 is passed through the first through hole 32, and the length dimension of the first anti-loosening part 50 is greater than the radial dimension of the mounting hole 21.

[0068] In the above setting, the first end of the first bolt 31 passes through the first mounting through hole 13 and the mounting hole 21 in sequence, and the first bolt 31 is threadedly connected to the mounting hole 21, so that the first bolt 31 is threadedly connected to the mounting sleeve 20, thereby realizing a fixed connection between the first locking structure 30 and the mounting sleeve 20. The first end of the first bolt 31 is provided with a first through hole 32. When the first end of the first bolt 31 passes through the mounting hole 21, the first through hole 32 is located outside the mounting hole 21, and the first anti-loosening member 50 can be passed through the first through hole 32. Since there is an angle between the extension direction of the axis of the first through hole 32 and the extension direction of the axis of the first bolt 31, and the length dimension of the first anti-loosening member 50 is greater than the radial dimension of the mounting hole 21, when the first anti-loosening member 50 is passed through the first through hole 32, the first anti-loosening member can prevent the first bolt 31 from withdrawing from the mounting hole 21, avoiding the problem of the first bolt 31 loosening, and can solve the problem of easy loosening of the bolt due to loose connection between the bolt and the sleeve, thereby ensuring the stable connection of the various components of the movable steel pillow for the large displacement telescopic device.

[0069] In an embodiment of the present invention, the angle between the extension direction of the axis of the first through hole 32 and the extension direction of the axis of the first bolt 31 is 90 degrees, that is, the extension direction of the axis of the first through hole 32 is perpendicular to the extension direction of the axis of the first bolt 31.

[0070] Preferably, the first anti-loosening member 50 includes a pin structure.

[0071] like Figure 3 as well as Figures 9 to 11 As shown, in an embodiment of the present invention, a first avoidance groove 23 for avoiding the first anti-loosening member 50 is provided at the bottom of the mounting sleeve 20. The first avoidance groove 23 is connected to the mounting hole 21, and an angle is formed between the extension direction of the first avoidance groove 23 and the thickness direction of the web 12.

[0072] In the above setting, the first bolt 31 passes through the mounting hole 21 and extends into the first avoidance groove 23. The first avoidance groove 23 can avoid the first anti-loosening component 50 and the first bolt 31, providing an accommodation space for the first anti-loosening component 50 and the first bolt 31. In this way, when the mounting sleeve 20 is installed in the mounting groove 14, the first anti-loosening component can be conveniently arranged and installed.

[0073] In the embodiment of the present invention, the angle between the extension direction of the first avoidance groove 23 and the thickness direction of the web 12 is 90 degrees, that is, the extension direction of the first avoidance groove 23 is perpendicular to the thickness direction of the web 12 .

[0074] In existing telescopic devices, the sleeve is provided with a mounting hole, and the bolts are connected to the mounting hole. The circumferential sidewalls of the sleeve are relatively closed, which leads to the accumulation of impurities and water inside the sleeve, making it difficult to clean during maintenance and repair, thus affecting the connection quality. By providing the first avoidance groove 23, impurities and water in the mounting hole 21 can be discharged through the first avoidance groove 23, facilitating cleaning during maintenance and repair, ensuring the cleanliness of the sleeve interior, and improving the connection quality.

[0075] like Figure 12 and Figure 13 As shown, in an embodiment of the present invention, a plurality of first through holes 32 are provided on the first end of the first bolt 31. Along the axial direction of the first bolt 31, the plurality of first through holes 32 are arranged in sequence at intervals, and there is an angle between the axes of at least two first through holes 32.

[0076] The first anti-loosening member 50 is selectively inserted into one of the plurality of first through holes 32 . By providing a plurality of first through holes 32 , the selectivity, adaptability and flexibility of the installation of the first anti-loosening member 50 are improved.

[0077] The first bolt 31 is threadedly connected to the mounting hole 21. By rotating the first bolt 31, the first bolt 31 is gradually fixed in the mounting hole 21. That is to say, the position of the first through hole 32 in the vertical direction and the orientation of the first through hole 32 are uncertain. By arranging multiple first through holes 32 at intervals along the axial direction of the first bolt 31 and making an angle between the axes of at least two first through holes 32, it can be ensured that at least one first through hole 32 can be conveniently installed with the first anti-loosening component 50, thereby ensuring that the purpose of preventing loosening can be achieved.

[0078] like Figure 12 and Figure 13 As shown, in an embodiment of the present invention, two first through holes 32 are provided on the first end of the first bolt 31. The two first through holes 32 are spaced apart in sequence along the axial direction of the first bolt 31, and the angle between the axes of the two first through holes 32 is 90 degrees.

[0079] In the existing telescopic device, a mounting hole is provided on the sleeve, and a bolt is connected to the mounting hole. The circumferential side wall of the sleeve is relatively closed, which causes impurities and water to easily accumulate inside the sleeve, making it difficult to clean during maintenance.

[0080] like Figure 3 、 Figure 7 、 Figure 9 and Figure 10 As shown, in the embodiment of the present invention, a second through hole 24 is further provided on the outer wall surface of the mounting sleeve 20 , the positioning protrusion 25 is spaced apart from the second through hole 24 , and the second through hole 24 is communicated with the mounting hole 21 .

[0081] In the above setting, the second through hole 24 is connected to the mounting hole 21. Impurities and accumulated water in the mounting hole 21 can be discharged through the second through hole 24, which is convenient for cleaning during maintenance and repair, avoiding the accumulation of impurities and accumulated water in the mounting hole 21, and solving the problem of impurities being difficult to clean between the bolt and the sleeve.

[0082] The positioning protrusion 25 and the second through hole 24 are spaced apart to facilitate arrangement of the positioning protrusion 25 and the second through hole 24 .

[0083] In addition, if Figure 7 、 Figure 9 and Figure 10 As shown, in the embodiment of the present invention, since the second through hole 24 is connected to the mounting hole 21, when the first bolt 31 is inserted into the mounting hole 21, the first through hole 32 on the first bolt 31 can be connected to the second through hole 24. At this time, the first anti-loosening member 50 can be inserted through the second through hole 24 and then inserted into the first through hole 32, so that the first anti-loosening member 50 is inserted into the first through hole 32 and part of the structure is located in the second through hole 24, and the purpose of preventing loosening is achieved by the first anti-loosening member 50. In this case, the mounting hole 21 can be a blind hole, and accordingly, the first avoidance groove 23 can be omitted from the bottom of the mounting sleeve 20.

[0084] like Figure 9 and Figure 11 As shown, in an embodiment of the present invention, the mounting sleeve 20 has a third side and a fourth side arranged opposite to each other along the second direction, and a second through hole 24 is provided on the third side and the fourth side of the mounting sleeve 20, wherein the second direction has an angle with the thickness direction of the web 12.

[0085] By providing the second through holes 24 on both the third side and the fourth side of the mounting sleeve 20 , the cleaning effect and efficiency of impurities and accumulated water can be improved.

[0086] like Figures 9 to 11As shown, in an embodiment of the present invention, the mounting sleeve 20 is a symmetrical structure, two positioning protrusions 25 are provided on the first side and the second side of the mounting sleeve 20, and a second through hole 24 is provided on the third side and the fourth side of the mounting sleeve 20. By setting the mounting sleeve 20 to a symmetrical structure, the installation methods of the mounting sleeve 20 can be increased, thereby improving the installation flexibility and diversity.

[0087] In the embodiment of the present invention, the angle between the second direction and the thickness direction of the web 12 is 0 degrees, that is, the second direction is parallel to the thickness direction of the web 12 .

[0088] like Figure 9 and Figure 10 As shown, in the embodiment of the present invention, the second through hole 24 is an elongated hole, and the elongated hole extends along the axial direction of the mounting hole 21 .

[0089] By setting the second through hole 24 as a long hole, the area of ​​the mounting hole 21 communicating with the outside can be increased, which helps to discharge impurities and accumulated water in the mounting hole 21 and improve the cleaning effect and efficiency.

[0090] Since impurities and accumulated water accumulate along the axial direction of the mounting hole 21 , setting the elongated hole to extend along the axial direction of the mounting hole 21 helps to discharge the impurities and accumulated water in the mounting hole 21 .

[0091] like Figures 14 to 17 As shown, in an embodiment of the present invention, along the thickness direction of the web 12, the centerline of the web 12 is parallel to the centerline of the top plate 11, and the centerline of the top plate 11 is directly above the centerline of the web 12. A first mounting hole 13 is located on the centerline of the top plate 11, and a plurality of first mounting holes 13 are provided on the top plate 11, spaced apart along the length of the top plate 11. Accordingly, a plurality of mounting grooves 14 are provided on the web 12. The movable steel sleeper 100 for a large-displacement telescopic device includes a plurality of mounting sleeves 20, the plurality of mounting grooves 14 being provided corresponding to the plurality of first mounting holes 13, and the plurality of mounting sleeves 20 being provided corresponding to the plurality of first mounting holes 13. The provision of the plurality of first mounting holes 13, the plurality of mounting grooves 14, and the plurality of mounting sleeves 20 improves the stability of the connection between the first locking structure 30 and the mounting sleeves 20, thereby improving the stability of the connection between the movable steel sleeper body 10 and the component to be mounted (for example, the connection between the movable steel sleeper body and the longitudinal beam, or the connection between the movable steel sleeper body and the rail).

[0092] like Figure 2 、 Figure 4 、 Figure 14 and Figure 15As shown, in an embodiment of the present invention, a second mounting through hole 15 is further provided on the top plate 11, and the movable steel pillow 100 for a large displacement telescopic device also includes a second locking structure 40 and a second anti-loosening member 60; the second locking structure 40 includes a second bolt 41 and a nut 42 threadedly connected to the second bolt 41, and the first end of the second bolt 41 is provided with a third through hole 43, and the extension direction of the axis of the third through hole 43 and the extension direction of the axis of the second bolt 41 have an angle; the first end of the second bolt 41 passes through the second mounting through hole 15 and the internal threaded hole on the nut 42 in sequence and is connected to the second anti-loosening member 60, and the second anti-loosening member 60 is arranged in the third through hole 43, and the length dimension of the second anti-loosening member 60 is greater than the radial dimension of the internal threaded hole on the nut 42.

[0093] In the above setting, the second bolt 41 passes through the second mounting hole 15 and is threadedly connected to the nut 42. The second mounting hole 15 and the second locking structure 40 can achieve the purpose of connecting the movable steel sleeper body 10 with the component to be installed (for example, connecting the movable steel sleeper body with the longitudinal beam, or connecting the movable steel sleeper body with the rail).

[0094] When the second bolt 41 passes through the second mounting through hole 15 and the internal threaded hole on the nut 42 in sequence, the third through hole 43 on the second bolt 41 is located outside the internal threaded hole on the nut 42, and the second anti-loosening member 60 is passed through the third through hole 43, and the length dimension of the second anti-loosening member 60 is greater than the radial dimension of the internal threaded hole on the nut 42. By setting the second anti-loosening member 60, the second bolt 41 can be prevented from withdrawing from the internal threaded hole on the nut 42, thereby avoiding the problem of the second bolt 41 and the nut 42 loosening, and can solve the problem of the bolt being easy to loosen due to the loose connection between the bolt and the sleeve, thereby ensuring the stable connection of the various components of the movable steel pillow for the large displacement telescopic device.

[0095] In the embodiment of the present invention, the angle between the extending direction of the axis of the third through hole 43 and the extending direction of the axis of the second bolt 41 is 90 degrees.

[0096] Preferably, the second locking member 60 includes a pin structure.

[0097] Preferably, the nut 42 is connected to the web 12. Preferably, the nut 42 is connected to the web 12 by welding.

[0098] Preferably, the nut 42 is a hexagonal modified nut 42 to achieve the function of stably connecting the movable steel sleeper with the scissor fork device and the longitudinal beam.

[0099] like Figure 5 、 Figure 6 、 Figure 14 and Figure 15As shown, in the embodiment of the present invention, a plurality of second mounting through holes 15 are provided on the top plate 11. Accordingly, the movable steel sleeper 100 for a large displacement telescopic device includes a plurality of second locking structures 40 and a plurality of second anti-loosening members 60. The plurality of second locking structures 40 are provided correspondingly to the plurality of second mounting through holes 15, and the plurality of second anti-loosening members 60 are provided correspondingly to the plurality of second mounting through holes 15. Through the above arrangement, the stability of the connection between the second locking structures 40 and the movable steel sleeper body 10 can be improved.

[0100] like Figure 5 and Figure 15 As shown, in the embodiment of the present invention, second mounting through holes 15 are provided on both sides of the center line of the top plate 11. This arrangement can improve the uniformity of the connection and ensure a smooth connection.

[0101] like Figure 4 As shown, in an embodiment of the present invention, a second avoidance groove 44 is provided at the bottom of the nut 42, the second avoidance groove 44 is connected to the internal threaded hole, and there is an angle between the extension direction of the second avoidance groove 44 and the axial direction of the internal threaded hole, and the third through hole 43 and the second anti-loosening member 60 are both located in the second avoidance groove 44.

[0102] In the above setting, the first end of the second bolt 41 passes through the internal threaded hole and extends into the second avoidance groove 44. The second avoidance groove 44 can avoid the second anti-loosening part and the second bolt 41, providing an accommodation space for the second anti-loosening part and the second bolt 41. In this way, after the second bolt 41 is connected to the nut 42, the second anti-loosening part can be conveniently arranged and installed.

[0103] In the embodiment of the present invention, the included angle between the extending direction of the second avoidance groove 44 and the axial direction of the internal threaded hole is 90 degrees.

[0104] like Figure 4 As shown, in an embodiment of the present invention, a plurality of third through holes 43 are provided on the first end of the second bolt 41. Along the axial direction of the second bolt 41, the plurality of third through holes 43 are arranged in sequence at intervals, and there is an angle between the axes of at least two third through holes 43.

[0105] The second anti-loosening member is selectively inserted into one of the third through holes 43 among the multiple third through holes 43. By providing multiple third through holes 43, the selectivity, adaptability and flexibility of the installation of the second anti-loosening member are improved. The second bolt 41 is threadedly connected to the nut 42. By rotating the second bolt 41, the second bolt 41 is gradually fixed in the internal threaded hole on the nut 42. In other words, the position of the third through hole 43 in the vertical direction and the orientation of the third through hole 43 are uncertain. By arranging multiple third through holes 43 at intervals along the axial direction of the second bolt 41 and making an angle between the axes of at least two third through holes 43, it can be ensured that at least one third through hole 43 can be conveniently installed with the second anti-loosening member, thereby ensuring that the purpose of preventing loosening can be achieved.

[0106] like Figure 2 as well as Figures 5 to 8 As shown, in the embodiment of the present invention, the movable sleeper body 10 further includes a bottom plate 16 connected to the web 12 and a reinforcing rib 17 connected to both the web 12 and the bottom plate 16 .

[0107] like Figure 2 、 Figure 5 and Figure 6 As shown, the longitudinal section of the movable steel sleeper body 10 is T-shaped, and the longitudinal section is perpendicular to the Figure 7 and Figure 8 The cross section of the movable steel sleeper body 10 is an I-shaped cross section in the paper direction. The reinforcing ribs 17 are welded to the web 12 to increase the vertical rigidity of the movable steel sleeper body 10 while minimizing the weight, thereby contributing to achieving lightweighting.

[0108] Preferably, the top plate 11 is connected to the web 12 by welding. Preferably, the web 12 is connected to the bottom plate 16 by welding.

[0109] The movable steel sleeper body 10 consists of a top plate 11, a web 12, and a bottom plate 16, all welded together. If the bridge and track are misaligned, the beam-end telescopic mechanism coordinates the deformation using a scissor-fork mechanism, allowing the movable steel sleeper to slide longitudinally along the longitudinal beam, always maintaining its center position in the beam seam.

[0110] like Figure 3 、 Figure 9 and Figure 11 As shown, in an embodiment of the present invention, the mounting sleeve 20 is in the shape of a butterfly (or H-shape), is made by a heat treatment process, is located on the web 12 of the movable steel sleeper body 10, and the connection between the movable steel sleeper and the rail is achieved through the mounting sleeve 20 and the iron buckle system.

[0111] The mounting sleeve 20 has the following advantages: 1. The middle part of the mounting sleeve 20 is hollowed out to form a second through hole 24, which is convenient for cleaning impurities, facilitates cleaning work during maintenance and repair, and ensures the cleanliness of the sleeve; 2. The butterfly-shaped (or H-shaped) mounting sleeve 20 is more tightly fixed to the web 12, increasing the stability of the connection with the rail; 3. After the first bolt 31 is connected to the mounting sleeve 20, a first anti-loosening part can be inserted into the first through hole 32 on the first bolt 31 to prevent the bolt from loosening, thereby ensuring the stable connection of the various components of the movable steel sleeper and increasing the stability of the connection.

[0112] like Figure 1 As shown, in an embodiment of the present invention, the beam end telescopic device includes the above-mentioned movable steel sleeper for the large displacement telescopic device.

[0113] Since the beam end telescopic device in the present application includes the movable steel sleeper for the large displacement telescopic device of the present application, the beam end telescopic device of the present application also has the above-mentioned advantages of the movable steel sleeper for the large displacement telescopic device of the present application, which will not be repeated here.

[0114] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: a mounting hole is provided on the mounting sleeve, at least part of the mounting sleeve is arranged in the mounting groove on the web, and the web has a supporting effect on the mounting sleeve; the top plate is connected to the web, and the mounting sleeve is installed in the mounting groove, and the movement of the mounting sleeve in the vertical direction can be limited; a first mounting through hole is provided on the top plate, and one end of the first locking structure passes through the first mounting through hole and is connected to the mounting hole, so that the first locking structure is connected to the mounting sleeve, and through the connection between the first locking structure and the mounting sleeve, the purpose of connecting the movable steel sleeper body with the component to be installed can be achieved. Two positioning protrusions are provided on the outer wall surface of the mounting sleeve, one of which is in contact with the first side surface of the web, and the other is in contact with the second side surface of the web. The web can be clamped between the two positioning protrusions, so that the mounting sleeve can be accurately installed in the mounting groove, thereby realizing the positioning of the mounting sleeve, so that the mounting hole can be aligned with the first mounting through hole, and the first locking structure can be connected to the mounting hole after passing through the first mounting through hole. In other words, the first locking structure can be conveniently connected to the mounting sleeve, and then the movable steel sleeper body can be conveniently and quickly connected to the component to be installed, thereby improving work efficiency.

[0115] Obviously, the embodiments described above 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 making creative efforts should fall within the scope of protection of the present invention.

[0116] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0117] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0118] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A movable steel sleeper for a large displacement telescopic device, characterized in that: include: A movable steel sleeper body (10) comprises a top plate (11) and a web plate (12) connected to the top plate (11), wherein the web plate (12) is located below the top plate (11), a first mounting through hole (13) is provided on the top plate (11), and a mounting groove (14) is provided on the web plate (12) corresponding to the first mounting through hole (13); a mounting sleeve (20), at least partially disposed in the mounting groove (14), the mounting sleeve (20) having a mounting hole (21) corresponding to the first mounting through hole (13); a first locking structure (30), one end of the first locking structure (30) passing through the first mounting through hole (13) and connected to the mounting hole (21); Wherein, two positioning protrusions (25) are provided on the outer wall surface of the mounting sleeve (20), and the two positioning protrusions (25) are arranged in sequence and spaced apart, wherein one of the positioning protrusions (25) abuts against the first side surface of the web (12), and the other positioning protrusion (25) abuts against the second side surface of the web (12), so as to clamp the web (12) between the two positioning protrusions (25), wherein the first side surface and the second side surface of the web (12) are arranged relative to each other in the thickness direction of the web (12).

2. The movable steel sleeper for a large displacement telescopic device according to claim 1 is characterized in that: The side walls of the two positioning protrusions (25) and a portion of the outer wall of the mounting sleeve (20) together form a positioning groove (22), and a portion of the web (12) is clamped in the positioning groove (22).

3. The movable steel sleeper for a large displacement telescopic device according to claim 2, characterized in that: The positioning groove (22) extends along the axial direction of the mounting hole (21).

4. The movable steel sleeper for a large displacement telescopic device according to claim 1, characterized in that: The mounting sleeve (20) has a first side and a second side arranged opposite to each other along a first direction, and the positioning protrusion (25) is provided on both the first side and the second side of the mounting sleeve (20), wherein an angle is formed between the first direction and the thickness direction of the web (12).

5. The movable steel sleeper for a large displacement telescopic device according to any one of claims 1 to 4, characterized in that: The first locking structure (30) includes a first bolt (31), and the mounting hole (21) is a through hole with a thread provided on the inner wall surface; A first through hole (32) is provided at the first end of the first bolt (31), and an angle is formed between an extension direction of an axis of the first through hole (32) and an extension direction of an axis of the first bolt (31); The movable steel pillow for the large displacement telescopic device further comprises a first anti-loosening member (50); The first end of the first bolt (31) passes through the first mounting through hole (13) and the mounting hole (21) in sequence, the first bolt (31) is threadedly connected to the mounting sleeve (20), the first anti-loosening member (50) is passed through the first through hole (32), and the length dimension of the first anti-loosening member (50) is greater than the radial dimension of the mounting hole (21).

6. The movable steel sleeper for a large displacement telescopic device according to claim 5, characterized in that: A first avoidance groove (23) for avoiding the first anti-loosening member (50) is provided at the bottom of the mounting sleeve (20); the first avoidance groove (23) is communicated with the mounting hole (21); and an angle is formed between an extension direction of the first avoidance groove (23) and a thickness direction of the web (12).

7. The movable steel sleeper for a large displacement telescopic device according to claim 5, characterized in that: A plurality of first through holes (32) are provided on the first end of the first bolt (31), and the plurality of first through holes (32) are sequentially spaced apart along the axial direction of the first bolt (31), and an angle is formed between the axes of at least two of the first through holes (32).

8. The movable steel sleeper for a large displacement telescopic device according to any one of claims 1 to 4, characterized in that: A second through hole (24) is also provided on the outer wall surface of the mounting sleeve (20), the positioning protrusion (25) and the second through hole (24) are spaced apart, and the second through hole (24) is communicated with the mounting hole (21).

9. The movable steel sleeper for a large displacement telescopic device according to claim 8, characterized in that: The mounting sleeve (20) has a third side and a fourth side arranged opposite to each other along a second direction, and the second through hole (24) is provided on both the third side and the fourth side of the mounting sleeve (20), wherein an angle is formed between the second direction and the thickness direction of the web (12); and / or, The second through hole (24) is an elongated hole, and the elongated hole extends along the axial direction of the mounting hole (21).

10. A beam end expansion device, characterized in that: A movable steel sleeper for a large displacement telescopic device comprising any one of claims 1 to 9.

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