A continuously adjustable floating slab track sleeve suitable for existing vibration isolators

Abstract

This invention discloses a continuously adjustable floating slab track outer sleeve suitable for existing vibration isolators. It includes a sleeve for fixing inside the floating slab, and a load-bearing plate threaded into the sleeve, the load-bearing plate having a channel. This invention provides a continuously adjustable floating slab track outer sleeve suitable for existing vibration isolators to solve the problem that existing vibration isolators with continuously adjustable height functions cannot determine whether the isolator is experiencing a dry-lifting event, easily leading to misjudgments of the isolator's true condition by operation and maintenance personnel and making it difficult to guarantee the actual service performance of the floating slab track system. This invention effectively eliminates the dry-lifting phenomenon of vibration isolators without affecting the judgment of the isolator's condition during service.

Description

Technical Field

[0001] This invention relates to the field of rail transit, specifically to a continuously adjustable floating slab track outer sleeve suitable for existing vibration isolators. Background Technology

[0002] Steel spring floating slab tracks, as the only special-grade vibration reduction measure, have been widely used in numerous rail transit lines, with some having served for over 20 years. During their service life, steel spring floating slab tracks have also exhibited several typical defects, such as steel spring breakage, shear hinge failure, rail corrugation, and unsupported vibration isolators. Among these, the unsupported vibration isolators problem leads to uneven stress on the track slab, exacerbating other track defects.

[0003] Currently, the rectification of the phenomenon of vibration isolators being suspended without support is mostly achieved by using the traditional method of filling and adjusting shims. The adjustment accuracy of this method is no more than 1mm, which means that the vibration isolators may still be in a suspended state after the rectification is completed; at the same time, this method may require multiple shim adjustments, resulting in low construction efficiency.

[0004] In recent years, as researchers have paid increasing attention to the performance of vibration isolators, some stepless height-adjustable vibration isolator devices have emerged in existing technologies. These vibration isolators achieve continuous adjustment of the height or position of the vibration isolator through a threaded structure. However, these existing threaded structures all have a common problem: when the lower foundation experiences post-construction settlement, the vibration isolator cannot deform in coordination with the lower foundation; because the vibration isolator and the track slab of this type of structure are always in an engaged state through the threaded structure, the vertical distance between the vibration isolator and the track slab does not change, so it is impossible to determine whether there is a gap by observation; in addition, some double-threaded vibration isolators have adjustment devices to block the gap, so even if a millimeter-level gap occurs, it is impossible to determine it by external observation or feeler gauge.

[0005] In summary, existing vibration isolators with stepless height adjustment cannot determine whether the vibration isolator is suspended without load again, which can easily lead to misjudgment of the true condition of the vibration isolator by operation and maintenance personnel, making it difficult to guarantee the actual service performance of the floating slab track system. Summary of the Invention

[0006] This invention provides a continuously adjustable floating slab track outer sleeve suitable for existing vibration isolators, to solve the problem that existing vibration isolators with continuously adjustable height functions cannot determine whether the vibration isolator is suspended without load again, which can easily lead to misjudgment of the true state of the vibration isolator by operation and maintenance personnel and make it difficult to guarantee the actual service performance of the floating slab track system. The invention achieves the goal of effectively eliminating the phenomenon of vibration isolator suspension without load, without affecting the judgment of the vibration isolator's state during service.

[0007] This invention is achieved through the following technical solution:

[0008] A continuously adjustable floating plate track sleeve suitable for existing vibration isolators includes a sleeve for fixing inside the floating plate, and a load-bearing plate that is threaded into the sleeve, the load-bearing plate having a channel.

[0009] To address the problem that existing vibration isolators with stepless height adjustment cannot determine whether the isolator is experiencing a dry-lifting issue, which can easily lead to misjudgments of the isolator's true condition by operation and maintenance personnel and make it difficult to guarantee the actual service performance of the floating slab track system, this invention proposes a stepless adjustable floating slab track outer sleeve suitable for existing vibration isolators. This application features a load-bearing plate threaded into the sleeve's interior. After the vibration isolator is installed inside the sleeve, tightening the load-bearing plate downwards brings its bottom surface into contact with the top of the isolator, thus achieving the installation and positioning of the isolator. By flexibly adjusting the height of the load-bearing plate, continuous and stepless adjustment of the vibration isolator can be achieved, completely eliminating the problem of the isolator being dry-lifted.

[0010] Compared to existing stepless height-adjustable vibration isolators, the vertical distance between the isolator and the track slab is not fixed during the application of this invention. When the lower foundation settles after construction, the isolator settles along with the foundation, creating a gap between the isolator and the support plate. Because the support plate has a channel, workers can visually inspect or use a feeler gauge to identify the gap caused by foundation settlement from the top of the sleeve. Then, by rotating the support plate and adjusting its height, the support plate actively adjusts to match the decrease in the height of the isolator, maintaining contact between the support plate and the isolator and ensuring the actual operational stability of the floating slab track system. Furthermore, this invention abandons the double-thread adjustment approach of existing technologies, eliminating any adjustment device that obstructs the view from above or allows tools to enter the sleeve.

[0011] As can be seen, this application overcomes the shortcomings of existing technologies that easily lead to misjudgments by operation and maintenance personnel regarding the actual service status of vibration isolators. While effectively eliminating the phenomenon of vibration isolators being suspended without load, this application also enables rapid assessment of the service status of vibration isolators, quickly identifying and addressing suspension conditions caused by foundation settlement. This application is compatible with traditional vibration isolators without requiring modifications to the existing structure, offering significant cost advantages for the retrofitting of older power lines.

[0012] Furthermore, the inner wall of the sleeve is provided with internal threads, and the outer wall of the load-bearing plate is provided with external threads, with the internal threads and external threads matching each other. This solution achieves threaded engagement between the load-bearing plate and the sleeve through the meshing of the external threads on the outer wall of the load-bearing plate and the internal threads on the inner wall of the sleeve.

[0013] Furthermore, the sidewall of the load-bearing plate has several positioning holes and also includes locking elements that match the positioning holes. The locking elements are used to restrict the rotation of the load-bearing plate.

[0014] After the load-bearing plate is adjusted to the correct height, locking elements are inserted into each positioning hole from the inside out, ensuring tight contact between the locking elements and the inner wall of the sleeve. This increases the resistance to relative rotation between the load-bearing plate and the sleeve, providing temporary positioning for the load-bearing plate. This prevents loosening between the load-bearing plate and the sleeve under train loads and also prevents significant misalignment between the load-bearing plate and the vibration isolator, which could interfere with the vibration isolator's performance. In this application, the channels on the load-bearing plate facilitate the installation and removal of the locking elements.

[0015] Preferably, the positioning hole is a threaded through hole, and the locking element is a set bolt that matches the threaded through hole, so that the set bolt can be screwed in and tightened from the inside out; when it is necessary to adjust the height of the load-bearing plate, the set bolt can be loosened.

[0016] Preferably, the axis of the positioning hole extends radially along the load-bearing plate.

[0017] Furthermore, the surface of the load-bearing plate has several limiting holes, and also includes limiting pins that match the limiting holes; the axis of the limiting holes is parallel to the axis of the load-bearing plate.

[0018] The limiting holes and limiting pins in this design can be used as auxiliary positioning components. The limiting holes are through holes that penetrate the load-bearing plate from top to bottom. After the load-bearing plate height is adjusted to the correct position, the limiting pins are inserted into each limiting hole from top to bottom, ensuring that the bottom end of the limiting pin is in close contact with the top surface of the vibration isolator. This increases the difficulty of relative misalignment between the load-bearing plate and the vibration isolator, improving their relative stability and thus enhancing the service stability of the vibration isolator. When adjusting the load-bearing plate height, the limiting pins must be removed beforehand. In this application, the channels on the load-bearing plate also facilitate the installation and removal of the limiting pins.

[0019] Furthermore, the channel sidewall includes three coaxial arc segments of equal diameter, with a protruding section between each adjacent arc segment, the protruding section extending radially outward. This channel design facilitates the installation of the vibration isolator inside the sleeve without removing the load-bearing plate, thus improving the efficiency of vibration isolator installation and removal.

[0020] Furthermore, it also includes an adjusting element for driving the rotation of the load-bearing plate, the adjusting element being detachably connected to the load-bearing plate. This solution drives the load-bearing plate to rotate through the adjusting element, thereby adjusting the height of the load-bearing plate relative to the sleeve, thus achieving coordination between the load-bearing plate and the vibration isolator, and enabling timely handling if the vibration isolator is found to be unsupported.

[0021] Furthermore, the adjusting element includes an extension rod, a mating part disposed at the bottom end of the extension rod, and a connector disposed at the top end of the extension rod; the mating part matches the channel and is used to be embedded in the channel.

[0022] This solution proposes an adjustment element specifically for this application. The adjustment element, from top to bottom, consists of a connector, an extension rod, and a mating part. In practical use, the extension rod is inserted into the sleeve from top to bottom, and the mating part is inserted into the channel in the middle of the load-bearing plate. At this time, the connector drives the extension rod and the mating part to rotate in the desired direction. Since the mating part is fitted inside the channel in the middle of the load-bearing plate, it can drive the load-bearing plate to rotate synchronously, thus quickly adjusting the height of the load-bearing plate on site and quickly eliminating the phenomenon of the vibration isolator being suspended unnecessarily. The connector in this solution can be any connector structure that facilitates the application of torque; no specific limitation is made here.

[0023] It is easy to understand that, since this solution requires the cooperation between the mating parts and the channel to achieve synchronous rotation between the adjusting element and the load-bearing plate, the channel on the load-bearing plate must not be a standard circular structure.

[0024] Furthermore, a limiting top plate is provided on the top surface of the mating part. During the downward insertion of the adjusting element, when the limiting top plate abuts against the top surface of the load-bearing plate, it indicates that the adjusting element has been lowered into place; therefore, the limiting top plate makes it easier for workers to quickly complete on-site operations and improves the efficiency of inspection and maintenance of the floating plate track.

[0025] Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

[0026] 1. The present invention provides a stepless adjustable floating plate track outer sleeve applicable to existing vibration isolators, which overcomes the shortcomings of existing technologies that cannot determine whether the vibration isolator is suspended again, and can quickly and effectively identify the phenomenon of vibration isolator suspension under the condition of foundation settlement.

[0027] 2. The present invention provides a continuously adjustable floating plate track sleeve suitable for existing vibration isolators, which overcomes the defect of existing technology that easily leads to misjudgment of the actual service status of vibration isolators by operation and maintenance personnel; while effectively eliminating the phenomenon of vibration isolators being suspended without load, it can also realize the rapid judgment of the service status of vibration isolators and perform simple and quick maintenance.

[0028] 3. The present invention provides a stepless adjustable floating plate track sleeve suitable for existing vibration isolators. It can be adapted to traditional vibration isolators without modifying the existing vibration isolator structure and has excellent cost advantages for the renovation of old lines.

[0029] 4. The present invention provides a continuously adjustable floating plate track outer sleeve suitable for existing vibration isolators, which can increase the difficulty of relative misalignment between the load-bearing plate and the vibration isolator, improve the relative stability between the load-bearing plate and the vibration isolator, and improve the service stability of the vibration isolator.

[0030] 5. The present invention provides a stepless adjustable floating plate track sleeve applicable to existing vibration isolators. It designs an adjustment element specifically for this application, which can quickly adjust the height of the load-bearing plate on site and quickly eliminate the phenomenon of the vibration isolator being suspended without load. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure during use in a specific embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the sleeve structure in a specific embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the load-bearing plate in a specific embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the locking element in a specific embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the adjusting element in a specific embodiment of the present invention;

[0037] Figure 6 This is a cross-sectional view of the assembly and adjustment components in a specific embodiment of the present invention;

[0038] Figure 7 This is a half-sectional schematic diagram of the vibration isolator under normal service conditions in a specific embodiment of the present invention;

[0039] Figure 8 This is a half-sectional schematic diagram of a vibration isolator suspended without load due to settlement of the lower foundation in a specific embodiment of the present invention.

[0040] The attached diagram shows the markings and corresponding component names:

[0041] 1-Sleeve, 2-Bearing plate, 201-Positioning hole, 202-Limiting hole, 203-Arc segment, 204-Protruding segment, 3-Locking element, 4-Adjusting element, 401-Extension rod, 402-Matching part, 403-Joint, 404-Limiting top plate, 5-Lug, 6-Vibration isolator. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are for explaining the invention only and are not intended to limit the invention. In the description of this application, it should be understood that terms such as "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "high," "low," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application.

[0043] Example 1:

[0044] like Figures 1 to 4 The illustrated continuously adjustable floating plate track sleeve for existing vibration isolators includes a sleeve 1 for fixing inside the floating plate, and a load-bearing plate 2 that is threaded into the sleeve 1, the load-bearing plate 2 having a channel.

[0045] In this embodiment, the load-bearing plate 2 is circular in shape, and the channel in the middle is an irregular structure.

[0046] In this embodiment, an internal thread is provided on the inner wall of the sleeve 1, and an external thread is provided on the outer wall of the bearing plate 2. The internal thread and the external thread are matched with each other. The height of the thread on the inner wall of the sleeve 1 can be adaptively set according to specific working conditions, and can extend to completely through the entire sleeve.

[0047] In this embodiment, at least one positioning hole 201 is provided on the side wall of the load-bearing plate 2, and a locking element 3 matching the positioning hole 201 is also provided. The locking element 3 is used to restrict the rotation of the load-bearing plate 2.

[0048] Preferably, the positioning hole 201 is a threaded through hole, and the locking element 3 is a set bolt that matches the threaded through hole. The end of the set bolt may be provided with a hexagonal countersunk groove to facilitate on-site installation and removal using a small hexagonal wrench.

[0049] Preferably, the axis of the positioning hole 201 is perpendicular to the axis of the load-bearing plate 2.

[0050] In this embodiment, several annularly distributed limiting holes 202 are also provided on the surface of the load-bearing plate 2, and limiting pins that match the limiting holes 202 are also provided; the axis of the limiting holes 202 is parallel to the axis of the load-bearing plate 2.

[0051] In a more preferred embodiment, three annular lugs 5 are provided on the inner wall of the sleeve 1 above the internal thread. Each lug 5 has a threaded through hole for matching with the upper cover plate of the existing vibration isolator and for fixing the upper cover plate of the existing vibration isolator.

[0052] Example 2:

[0053] A continuously adjustable floating slab track sleeve suitable for existing vibration isolators, based on Embodiment 1, such as... Figures 1 to 6 As shown, the channel sidewall includes three coaxial and equal-diameter arc segments 203, and a protruding segment 204 is provided between each adjacent arc segment 203, and the protruding segment 204 extends radially outward.

[0054] In this embodiment, the shape and size of the channel are matched with the vibration isolator to be installed; there are three protruding sections 204, and their shape matches the protruding part of the vibration isolator to be installed, so as to facilitate the smooth installation of the vibration isolator into the sleeve 1.

[0055] This embodiment also includes an adjusting element 4 for driving the load-bearing plate 2 to rotate, the adjusting element 4 being matched with the load-bearing plate 2. Specifically, as shown... Figure 5 As shown, the adjusting element 4 includes an extension rod 401, a mating part 402 disposed at the bottom end of the extension rod 401, and a connector 403 disposed at the top end of the extension rod 401; the mating part 402 matches the channel, and its shape and size are just able to be embedded in the channel.

[0056] In this embodiment, connector 403 is a hexagonal boss connector, which facilitates the use of a regular wrench or torque wrench to adjust the load-bearing plate. Furthermore, by setting a torque threshold, a torque wrench can be used to quantify the applied torque during adjustment, thereby assisting in determining whether the load-bearing plate 2 and the vibration isolator are properly installed.

[0057] Furthermore, the extension rod 401 and the mating part 402 can be either hollow or solid structures. In this embodiment, a hollow structure is used to reduce the weight.

[0058] Preferably, the top surface of the mating part 402 is provided with a limiting top plate 404, so that no matter what angle the adjusting element 4 is rotated to, the limiting top plate 404 cannot pass through the channel on the load-bearing plate 2.

[0059] Example 3:

[0060] The method of using the continuously adjustable floating plate track outer sleeve as described in Example 2 includes:

[0061] S1. Pre-embed the sleeve 1 in the floating plate; rotate the bearing plate 2 to adjust the height so that the bearing plate 2 is higher than the height of the vibration isolator to be installed;

[0062] S2. Install the vibration isolator into the sleeve 1: Align the vibration isolator to be installed with the channel on the load-bearing plate 2, and put the vibration isolator downward so that the vibration isolator passes through the load-bearing plate 2 and sits on the lower foundation.

[0063] S3. Rotate the support plate 2 and adjust its height downwards until the bottom surface of the support plate 2 abuts against the top of the vibration isolator; install the locking element 3 into the positioning hole 201, and / or install the limiting pin into the limiting hole 202; the state at this time can be referenced. Figure 7 ;

[0064] S4. During the service life of the vibration isolators, staff should visually inspect or use a feeler gauge to check for any instances of unsupported operation during routine inspections; if settlement occurs in the underlying foundation, such as Figure 8 As shown, the vibration isolator detaches from the load-bearing plate 2, resulting in it being suspended in mid-air.

[0065] S5. If it is identified that an empty hoisting has occurred, remove the locking element 3 and / or the limit pin, rotate the load-bearing plate 2, and adjust the height downward until the bottom surface of the load-bearing plate 2 is back against the top of the vibration isolator; reinstall the locking element 3 and / or the limit pin.

[0066] In the usage method of this embodiment, the process of rotating the load-bearing plate 2 is completed by adjusting the element 4. Specifically, it includes: aligning the mating part 402 with the channel on the load-bearing plate 2, inserting the adjusting element 4 from the top of the sleeve 1 until the mating part 402 enters the channel and the limiting top plate 404 abuts against the top surface of the load-bearing plate 2; and manually or using a wrench or other tools, rotating the connector 403 in a specified direction.

[0067] In the usage method of this embodiment, after the bottom surface of the load-bearing plate 2 abuts against the top of the vibration isolator, the torque applied to the load-bearing plate 2 is read in real time so that the torque value is within the set range.

[0068] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0069] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the term “connection” as used herein, unless otherwise specified, can mean a direct connection or an indirect connection via other components.

Claims

1. A stepless adjustment outer sleeve for a floating slab track suitable for an existing vibration isolator, comprising a sleeve (1) for fastening inside a floating slab, characterized in that, Further comprising a force bearing plate (2) threadedly fitted inside the sleeve (1), the force bearing plate (2) being provided with a passage; The side wall of the force bearing plate (2) is provided with a plurality of positioning holes (201), and further comprises a locking element (3) matched with the positioning holes (201), the locking element (3) being used for limiting rotation of the force bearing plate (2); The positioning holes (201) are threaded holes, and the locking element (3) is a locking bolt matched with the threaded holes; The surface of the force bearing plate (2) is provided with a plurality of limiting holes (202), the limiting holes (202) being through holes penetrating the force bearing plate (2) from top to bottom; further comprising a limiting pin matched with the limiting holes (202); the axis of the limiting holes (202) is parallel to the axis of the force bearing plate (2); the side wall of the passage comprises three coaxial and equal-diameter arc segments (203), and a convex segment (204) is arranged between adjacent two arc segments (203), the convex segment (204) extending radially outward; Further comprising an adjusting element (4) used for driving the force bearing plate (2) to rotate, the adjusting element (4) being detachably connected with the force bearing plate (2); The adjusting element (4) comprises an extension rod (401), a matching part (402) arranged at the bottom end of the extension rod (401), and a joint (403) arranged at the top end of the extension rod (401); the matching part (402) is matched with the passage and is used for being embedded in the passage.

2. A stepless adjustment floating slab track outer sleeve suitable for an existing vibration isolator according to claim 1, characterized in that, The inner wall of the sleeve (1) is provided with internal threads, the outer wall of the force bearing plate (2) is provided with external threads, and the internal threads and the external threads are matched with each other.

3. A stepless adjustment floating slab track outer sleeve suitable for an existing vibration isolator according to claim 1, characterized in that, The axis of the positioning holes (201) extends radially along the force bearing plate (2).

4. A stepless adjustment floating slab track outer sleeve suitable for an existing vibration isolator according to claim 1, characterized in that, The top surface of the matching part (402) is provided with a limiting top plate (404).

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