Sleeve structure for floating ballast bed
By designing the casing structure, the problem of the in-place shear hinge that is not replaceable is solved, and maintenance and replacement are realized. It is suitable for cast-in-place and prefabricated plate structures, improving the flexibility and safety of construction.
Patent Information
- Application Number
- CN202422638179.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-30
AI Technical Summary
The existing mid-mounted shear hinges have irreplaceable defects in floating track beds and are only suitable for cast-in-place plate structures, affecting walking safety and construction flexibility.
A casing structure is designed, with a lifting stop block installed on the inner wall of the casing body, a hanging lug fixed on the outer wall, and a side wall has an inspection hole, and the shear hinge shaft sleeve can be detachedly connected through the fixed casing to realize the maintenance and replacement of the mid-mounted shear hinge, which is suitable for cast-in-place plate and prefabricated plate structures.
The maintenance and replacement of the mid-mounted shear hinge is realized, which reduces the risk of welding defects, improves the flexibility and applicability of construction, and is suitable for different types of floating plate structures.
Smart Images
Figure CN223088200U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of rail transit, and particularly relates to a sleeve structure for a floating track bed. Background Art
[0002] With the development of society and the progress of technology, major cities have increasingly attached importance to the development of urban rail transit. The construction of urban rail transit, especially the construction of subways, has also been greatly expanded. In order to reduce the interference to the properties and residents above or around the rail transit, setting a steel spring floating slab track bed in special sections is an important vibration isolation measure in subway design.
[0003] In the floating track bed structure, the shear hinge has become an indispensable and important safety component for connecting the slabs in the floating slab, and is an important part of the structure for transmitting shear force between adjacent floating slabs. It can share the shear force borne by the rail when crossing the slab joint, and enable the slabs to deform coordinately.
[0004] The existing shear hinges are mainly divided into two types: upper-mounted type and middle-mounted type according to their working positions. The upper-mounted shear hinge is located above the floating slab body, which affects the walking safety. The middle-mounted shear hinge has the defect of being non-replaceable and is only applicable to the cast-in-place slab structure. Utility Model Content
[0005] The present application provides a sleeve structure for a floating track bed. The sleeve structure can not only realize the maintenance and replacement of the middle-mounted shear hinge, but also be applicable to both the cast-in-place slab structure and the precast slab structure of the floating slab.
[0006] In the first aspect, a sleeve structure for a floating track bed provided by the present application adopts the following technical solution:
[0007] A sleeve structure for a floating track bed, with a jacking stop block provided on the inner wall of the sleeve body, a lifting lug fixedly provided on the outer wall of the sleeve body, a maintenance hole provided on the side wall of the sleeve body, a fixed sleeve extending outward from the maintenance hole to the outside of the sleeve body, and the sleeve body being detachably connected to a shear hinge bushing through the fixed sleeve.
[0008] In a preferred embodiment, the shear hinge bushing is inserted into the fixed sleeve and has an interference fit with the fixed sleeve;
[0009] Or, the shear hinge bushing is inserted into the fixed sleeve, and the sleeve is connected through a circlip.
[0010] In a preferred embodiment, a flange flange is integrally stamped at the bottom of the sleeve body.
[0011] In a preferred embodiment, a clamping flange is arranged at the end of the shear hinge bushing inserted into the casing body, and the length of the shear hinge bushing satisfies that the shear hinge bushing slides along the fixed casing and is hidden inside the casing body.
[0012] In a preferred embodiment, two jacking channels are arranged inside the casing body, and the inspection hole is arranged between the two jacking channels.
[0013] In a preferred embodiment, a bottom plate is arranged at the bottom of the casing body. The bottom plate is one of a polygon, a rectangle, an ellipse, and an "∞" shape adapted to the two jacking channels, and the casing body is in an ellipse or "∞" shape.
[0014] In a preferred embodiment, the jacking stop is of an integral structure and is arranged on the inner wall and / or the top of the casing body.
[0015] In a preferred embodiment, the jacking stop includes a plurality of connecting blocks arranged on the inner wall of the casing body, and the connecting blocks are configured with limit pins.
[0016] In a preferred embodiment, a fixing block is arranged at the top of the casing body.
[0017] In summary, the present application includes at least one of the following beneficial technical effects:
[0018] 1. The configuration of the shear hinge bushing and the inspection hole provides a channel for the installation and inspection of the shear hinge, realizing the inspection and replacement of the central shear hinge. At the same time, since the casing body is detachably connected to the shear hinge bushing through the fixed casing, when the shear hinge does not need to be installed, the shear hinge bushing can be removed and a plug can be installed at the fixed casing opening, so that the casing can be used not only for the cast-in-place slab structure of the floating slab, but also for the precast slab structure of the floating slab.
[0019] 2. The integrally stamped flange reduces the number of welds of the casing and reduces the risk of unstable factors such as welding defects.
[0020] 3. During the prefabrication of the floating slab, first, the shear hinge bushing is hidden inside the casing body. During the laying process of the floating track bed, according to the assembly requirements of the shear hinge, the shear hinge bushing of the floating slab that needs to be assembled with the shear hinge is pulled out, and the inner wall of the casing body is clamped by using the clamping flange. The shear hinge bushings of adjacent floating slabs are connected by a connecting pipe, and the assembly of the shear hinge can be provided. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic diagram of the casing structure according to Embodiment 1 of the present application.
[0022] Figure 2It is a schematic diagram of the position of the snap ring in the casing structure described in the first embodiment of the present application.
[0023] Figure 3 It is a schematic diagram of the casing structure described in the second embodiment of the present application.
[0024] Figure 4 It is a schematic diagram of the casing structure described in the third embodiment of the present application.
[0025] Figure 5 It is a schematic diagram of the casing structure described in the fourth embodiment of the present application.
[0026] Figure 6 It is a top view of the casing structure described in the fourth embodiment of the present application.
[0027] Figure 7 It is a schematic diagram of the casing structure described in the fifth embodiment of the present application.
[0028] Figure 8 It is Figure 7 the A-A sectional view of.
[0029] Figure 9 It is a schematic diagram of the casing structure described in the sixth embodiment of the present application.
[0030] Explanation of reference numerals: 1, casing body; 11, flange flanging; 2, inspection hole; 3, shear hinge bushing; 31, clamping flanging; 4, fixed casing; 5, snap ring; 6, jacking stop block; 61, connecting block; 62, limit pin; 7, lifting lug; 8, fixing block; 9, auxiliary fixing device; 91, support rod; 92, limit plate; 10, bottom plate. Detailed implementation manners
[0031] The following further Figures 1-9 describes the present application in detail with reference to the attached
[0032] Embodiment 1:
[0033] Referring to Figure 1 , the embodiment of the present application provides a casing structure for a floating track bed. The casing includes a casing body 1 and a shear hinge bushing 3 detachably connected to the casing body 1. An inspection hole 2 penetrating the side wall of the casing body 1 is arranged on the side wall of the casing body 1. The inspection hole 2 extends outward from the casing body 1 to form a fixed casing 4, and the fixed casing 4 is detachably connected to the shear hinge bushing 3.
[0034] In a preferred example, the outer wall of the shear hinge bushing 3 and the inner wall of the fixed casing 4 are in interference fit.
[0035] Referring to Figure 2, in another preferred example, after the shear hinge bushing 3 is inserted into the inside of the sleeve body 1, it is fixedly connected to the sleeve body 1 by a snap ring 5, and the snap ring 5 is fixedly arranged on the inner wall of the sleeve body 1. The specific structure fixed by the snap ring 5 will not be elaborated in the examples of this application.
[0036] The configuration of the shear hinge bushing 3 and the inspection hole 2 provides a channel for the installation and inspection of the shear hinge, realizing the inspection and replacement of the central shear hinge; at the same time, since the sleeve body 1 is detachably connected to the shear hinge bushing 3 through the fixed sleeve 4, when the shear hinge does not need to be installed, the shear hinge bushing 3 can be removed and a plug can be installed at the opening of the fixed sleeve 4, so that the sleeve can be used not only for the cast-in-place slab structure of the floating slab but also for the precast slab structure of the floating slab.
[0037] The sleeve body 1 is in a circular tubular shape, and a jacking stop block 6 is arranged on the inner wall of the sleeve body 1. The jacking stop block 6 includes a plurality of connecting blocks 61 fixedly arranged on the inner wall of the sleeve body 1 for jacking and a limit pin 62 cooperating with the connecting blocks 61. The connecting blocks 61 are integrally in an I shape, and one or more limit pins 62 are configured. When assembling the inner pipe, rotate the inner pipe so that when the top cover of the inner pipe reaches the limit pin 62, it is ensured that the top cover of the inner pipe is exactly at the center position of the connecting block 61. The top of the connecting block 61 is flush with the top of the sleeve body 1 so that the connecting block 61 can be used as the top support of the sleeve body 1.
[0038] A plurality of lifting lugs 7 are also fixedly arranged on the outer side wall of the sleeve body 1. The lifting lugs 7 not only provide convenience for the movement of the sleeve structure but also can provide convenience during the movement of the formed floating slab.
[0039] Furthermore, a flange flanging 11 is integrally stamped and formed at the bottom of the sleeve body 1, and the flange flanging 11 is bent in an arc shape from the bottom of the sleeve body 1 to the outside. The flange flanging 11 reduces the number of welds of the sleeve and reduces the risk of unstable factors such as welding defects.
[0040] Embodiment 2:
[0041] Refer to Figure 3 , the difference between the embodiment of this application and Embodiment 1 is that: the connecting block 61 is fixedly arranged on the inner wall of the sleeve body 1 and has a certain distance from the top of the sleeve body 1. A plurality of fixing blocks 8 are fixedly arranged at the top of the inner wall of the sleeve body 1, and the fixing blocks 8 are used as the top support of the sleeve body 1, and the connecting block 61 is used for the jacking process.
[0042] Embodiment 3:
[0043] Refer to Figure 4, the difference between the embodiment of the present application and the first embodiment is that: a clamping flange 31 is arranged at the end of the shear hinge bushing 3 inserted into the sleeve body 1, and the length of the shear hinge bushing 3 satisfies that the shear hinge bushing 3 slides along the fixed sleeve 4 and is hidden inside the sleeve body 1.
[0044] During the prefabrication of the floating slab, first, the shear hinge bushing 3 is hidden inside the sleeve body 1. Since the fixed sleeve 4 extends a certain distance outside the sleeve body 1, during the prefabrication of the floating slab, the cement layer at the pipe orifice position of the fixed sleeve 4 is relatively thin. During the laying process of the floating track bed, according to the assembly requirements of the shear hinge, the cement layer at the pipe orifice position of the fixed sleeve 4 of the floating slab that needs to assemble the shear hinge is damaged, and the shear hinge bushing 3 is pulled out. The clamping flange 31 is used to clamp the inner wall of the sleeve body 1, and the shear hinge bushings 3 of adjacent floating slabs are connected by a connecting pipe, so as to provide the assembly of the shear hinge.
[0045] Embodiment Four:
[0046] Refer to Figure 5 and Figure 6 , the difference between the embodiment of the present application and the first embodiment is that: two jacking channels are arranged inside the sleeve body 1, and the inspection hole 2 is arranged between the two jacking channels.
[0047] The sleeve structure described in the embodiment of the present application is applied to the floating slab of the transition section. The floating slab of the transition section needs to increase stiffness. Generally, the adopted solution is to densely arrange vibration isolators at the end part of the floating slab, and vibration isolators need to be arranged on both the inner and outer sides of the rail. The double jacking channels of the present application can replace two separate sleeve structures with one sleeve structure, solve the problem that the floating slab transition section needs dense arrangement of vibration isolators, optimize the construction steps, and save the construction cost, etc.
[0048] Furthermore, a bottom plate 10 is fixedly connected to the bottom of the sleeve body 1, and the bottom plate 10 is provided with a flange plate.
[0049] It should be noted that the present application does not uniquely define the specific shapes of the bottom plate 10 and the sleeve body 1. For example, the transverse cross-section of the sleeve body 1 is elliptical, polygonal or "∞" shaped, and the overall shape of the bottom plate 10 is elliptical, polygonal or "∞" shaped. The shape of the transverse interface of the sleeve body 1 and the shape of the bottom plate 10 can be selected according to the operation requirements.
[0050] Embodiment Five:
[0051] Refer to Figure 7 and Figure 8 , the difference between the embodiment of the present application and the fourth embodiment is that: the jacking block 6 is an integral structure and is arranged on the inner wall and / or the top of the sleeve body 1. A through hole is formed in the middle of the jacking block 6 to adapt to the jacking channel.
[0052] When only one jacking stop block 6 is provided, the jacking stop block 6 is arranged on the inner wall of the sleeve body 1 and has a certain distance from the top of the sleeve body 1. A fixing structure for support needs to be configured at the top of the sleeve body 1, such as the fixing block 8 described in the second embodiment.
[0053] When only one jacking stop block 6 is provided, and the jacking stop block 6 is arranged at the top of the sleeve body 1, then the jacking stop block 6 is used for both the top support of the sleeve body 1 and the jacking process.
[0054] When two jacking stop blocks 6 are provided, the two jacking stop blocks 6 are respectively arranged on the inner wall and the top of the sleeve body 1, and respectively correspond to the top support and the jacking process of the sleeve body 1.
[0055] Embodiment Six:
[0056] Referring to Figure 9 , the difference between the embodiment of the present application and the fourth embodiment is that an auxiliary fixing device 9 is arranged in the sleeve body 1, and the auxiliary fixing device 9 is located between the two jacking channels.
[0057] The auxiliary fixing device 9 includes two parallel support rods 91 and a limiting plate 92 fixedly arranged on the two support rods 91. The two limiting plates 92 are in a horizontal position and form the jacking channels with the connecting blocks 61 on the inner wall of the sleeve body 1.
[0058] The above are all the preferred embodiments of the present application. Without restricting the protection scope of the present application based on this, therefore: All equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A sleeve structure for a floating track bed, characterized in that, The inner wall of the sleeve body (1) is provided with a lifting block (6), the outer wall of the sleeve body (1) is fixedly provided with a lifting lug (7), the side wall of the sleeve body (1) is provided with an inspection hole (2), and the inspection hole (2) is provided with a fixed sleeve (4) extending toward the outside of the sleeve body (1), and the sleeve body (1) is detachably connected to the shear hinge sleeve (3) via the fixed sleeve (4).
2. A casing structure for a floating ballast according to claim 1, characterized in that: The shear hinge sleeve (3) is inserted into the fixed sleeve (4) and is interference fit with the fixed sleeve (4); Alternatively, the shear hinge sleeve (3) is inserted into the fixed sleeve (4) and connected to the sleeve via a retaining spring (5).
3. The sleeve structure for a floating track bed according to claim 1, characterized in that, The bottom of the sleeve body (1) is integrally stamped with a flange (11).
4. A casing structure for a floating track bed according to claim 1, characterized in that, The end of the shear hinge sleeve (3) inserted into the sleeve body (1) is provided with a snap-on flange (31), and the length of the shear hinge sleeve (3) satisfies the requirement that the shear hinge sleeve (3) slides along the fixed sleeve (4) and is hidden inside the sleeve body (1).
5. A casing structure for a floating track bed according to claim 1, characterized in that, Two lifting channels are arranged in the casing body (1), and the inspection hole (2) is arranged between the two lifting channels.
6. The sleeve structure for a floating track bed according to claim 5, characterized in that, The bottom of the casing body (1) is provided with a bottom plate (10), and the bottom plate (10) is one of a polygonal shape, a rectangular shape, an elliptical shape, and an "∞" shape that is compatible with two lifting channels, and the casing body (1) is an elliptical shape or an "∞" shape.
7. The sleeve structure for a floating track bed according to claim 1, characterized in that, The lifting block (6) is an integrated structure and is arranged on the inner wall and / or the top of the sleeve body (1).
8. A casing structure for a floating track bed according to claim 1, characterized in that, The lifting block (6) comprises a plurality of connection blocks (61) arranged on the inner wall of the sleeve body (1), and the connection blocks (61) are provided with limit pins (62).
9. A casing structure for a floating track bed according to claim 8, characterized in that, A fixing block (8) is arranged on the top of the sleeve body (1).