Helical sleeve height adjusting type prefabricated slab track structure and height adjusting method thereof

Abstract

The invention relates to the technical field of track engineering, in particular to a helical casing heightening type prefabricated slab track structure which comprises a track plate assembly, a base assembly and a heightening assembly located between the track plate assembly and the base assembly, and the heightening assembly comprises oppositely-arranged distance adjusting blocks and helical casing units connected between the distance adjusting blocks in the longitudinal direction; the track plate assembly comprises a track plate body arranged at the upper end of the distance adjusting block in a matched and attached mode, the base assembly comprises a base plate body arranged at the lower end of the distance adjusting block and a double-limiting unit arranged at the upper end of the base plate body, and the distance adjusting block and the track plate body are horizontally limited through the double-limiting unit. The invention further provides a height adjusting method of the spiral sleeve height adjusting type prefabricated slab track structure. Positioning installation and field stepless height adjustment of the track plate can be achieved, and transverse and longitudinal positioning of the height adjusting sleeper beam and the track plate can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of track engineering, and specifically provides a spiral sleeve height-adjustable prefabricated plate track structure and a height-adjusting method thereof. Background Art

[0002] Traditional prefabricated track slabs are usually composed of rails, fasteners, prefabricated track slabs, self-compacting concrete filling layers, isolation layers, bases, etc. U-shaped connecting steel bars are left at the bottom of the prefabricated slabs for connecting and fixing with the concrete layer. During construction, the track slabs need to be hoisted to the required installation height, and concrete is poured downward through the reserved concrete pouring holes on the prefabricated slabs to form a filling layer. At the same time, the concrete filling layer forms a limiting boss to cooperate with the base. It can be seen that the traditional prefabricated slab installation method requires the track slabs to be hoisted to the installation height and requires cast-in-place concrete, which is cumbersome and has a long construction period.

[0003] In order to solve the above problems, the following patents are related to the construction of prefabricated track slabs in the prior art: 1. The invention patent with the patent number "202110255437.X" and the patent name "A combined track plate, prefabricated plate track system and its installation and construction method" includes a track structure, a combined track plate, an isolation layer and a base. The track structure is installed on the combined track plate. The combined track plate includes a track plate and a limit boss. The limit boss is connected to the bottom of the track plate. The isolation layer is arranged at the bottom of the combined track plate, and the base is a cast-in-place base. This solution does not require the pouring of the filling layer, which reduces the process of on-site concrete pouring.

[0004] 2. The utility model patent with patent number "201820987547.9" and patent name "Secondary Casting Upgradeable Universal Roadbed" includes a combined roadbed plate unit and a connecting layer. The combined roadbed plate unit includes a prefabricated base plate and a prefabricated roadbed plate. A height adjustment layer is arranged between the prefabricated base plate and the prefabricated roadbed plate. The height adjustment layer and the prefabricated base plate and the prefabricated roadbed plate are respectively kept in a detachable state. A horizontal limit structure is arranged between the prefabricated base plate and the prefabricated roadbed plate. This scheme has a short construction period and excellent vibration reduction performance.

[0005] The focus of the above-mentioned patent 1 is to reduce the on-site construction process, prefabricate the limit boss and the track plate as one, and directly install it on the cast-in-place base, but the structural height cannot be adjusted. The cast-in-place base requires high construction accuracy to meet the installation requirements. Although the above-mentioned patent 2 has a height adjustment layer, it is difficult to achieve stepless height adjustment, and the limit stability is limited.

[0006] In summary, how to design a prefabricated track structure and its height adjustment method that can improve the traditional prefabricated track that needs to be cast on-site through self-compacting concrete during installation, and can realize the positioning installation of the track plate and the on-site infinite height adjustment, is a problem that needs to be solved urgently. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a spiral sleeve height-adjustable prefabricated plate track structure, which can conveniently adjust the track plate height, has a simple structure, is easy to operate, and has high work efficiency. The present invention also provides a spiral sleeve height-adjustable prefabricated plate track structure and a height-adjusting method thereof.

[0008] The present invention provides a spiral sleeve height-adjustable prefabricated plate track structure, which specifically includes a track plate assembly, a base assembly and a height-adjusting assembly located between the track plate assembly and the base assembly; the height-adjusting assembly includes relatively arranged distance-adjusting blocks and a spiral sleeve unit longitudinally connected between the distance-adjusting blocks; the track plate assembly includes a track plate body matched and fittedly placed on the upper end of the distance-adjusting block, the base assembly includes a base plate body placed on the lower end of the distance-adjusting block and a double limiting unit arranged on the upper end of the base plate body, and the distance-adjusting block and the track plate body are horizontally limited by the double limiting unit.

[0009] Furthermore, the height of the distance adjusting block gradually increases from the inside toward the longitudinal outside, that is, the upper end surface of the distance adjusting block is an inclined surface structure inclined upward from the inside toward the longitudinal outside; the height of the two side portions of the track plate body gradually decreases from the inside toward the longitudinal outside, that is, the lower end surfaces of the two side portions of the track plate body are an inclined surface structure inclined upward from the inside toward the longitudinal outside; and the upper end surface of the distance adjusting block is fitted and matched with the lower end surfaces of the two side portions of the track plate body.

[0010] Furthermore, the spiral sleeve unit includes an externally threaded steel pipe embedded in the inner end surface of the relatively arranged distance adjusting block, the externally threaded steel pipes are arranged in pairs, and each pair of externally threaded steel pipes is provided with an internally threaded spiral pipe; the external end surface of the externally threaded steel pipe is provided with an external thread, and the inner end surface of the internally threaded spiral pipe is provided with an internal thread matching the external thread, and the externally threaded steel pipe drives the distance adjusting block to move horizontally along the longitudinal direction by rotating the internally threaded spiral pipe.

[0011] Furthermore, two sections of internal thread structure are provided on the inner end surface of the internal thread spiral pipe, and the two sections of internal thread structure are respectively matched with the external threads on two relatively arranged external thread steel pipes. The two sections of internal thread structure are symmetrically arranged with the middle vertical section of the internal thread spiral pipe as a reference, and the middle part of the two sections of internal thread structure is a light hole structure; the outer end surface of the internal thread spiral pipe is provided with a force-adding tooth, which is arranged in the middle part of the internal thread spiral pipe and located outside the light hole structure.

[0012] Furthermore, the double limiting unit comprises a low limiting boss arranged at the upper end of the base plate body, the low limiting boss is located between the distance adjusting blocks arranged oppositely and is used to perform horizontal and longitudinal limiting on the distance adjusting blocks.

[0013] Furthermore, the double limit unit also includes a high limit boss located at the lateral outer end of the low limit boss, the high limit boss is located outside the lateral outer end surface of the distance adjusting block and can perform horizontal lateral limit on the distance adjusting block.

[0014] Furthermore, the two lateral ends of the track plate body are matched with the high limit boss to form limit grooves, and the high limit boss can be accommodated in the limit grooves, and the track plate body is horizontally and longitudinally limited by the high limit boss and the limit grooves.

[0015] Furthermore, more than two sets of prefabricated plate track structures are arranged on the base plate body in the transverse direction, and the track plate bodies of adjacent prefabricated plate track structures are locked and connected by connecting fasteners.

[0016] A method for adjusting the height of a spiral sleeve height-adjustable prefabricated plate track structure, wherein the height-adjusting operation is performed by the structure described above, and comprises the following steps: S1: manufacturing prefabricated height adjustment components, prefabricated track plate components and base components; S2: Install the base plate body on site and hoist the height adjustment assembly onto the base plate body as a whole; S3: Lift the track plate body to the upper end of the distance adjusting block.

[0017] Furthermore, when making the prefabricated height adjustment component in S1, the external threaded steel pipe is pre-buried in the longitudinal inner end face of the distance adjusting block, and then the internal threaded spiral pipe is assembled onto the external threaded steel pipe and the position of the distance adjusting block is roughly adjusted; after the distance adjusting block is hoisted onto the base plate body in S2, the internal threaded spiral pipe needs to be rotated to finely adjust the position of the distance adjusting block to meet the installation height requirement.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects: based on the traditional prefabricated track structure and construction, the present invention designs a prefabricated track structure based on a wedge-shaped adjustable sleeper beam and a spiral sleeve of a pre-embedded externally threaded steel pipe, and the structure is in the form of prefabricated parts. The prefabricated track plate, the prefabricated height-adjustable sleeper beam of the pre-embedded threaded steel pipe and the spiral sleeve, and the double-limit boss base are installed and used in combination, which can realize the positioning installation and on-site stepless height adjustment of the track plate, realize the lateral and longitudinal positioning of the height-adjustable sleeper beam and the track plate, optimize the construction process of pouring the concrete filling layer, simplify the construction process, and greatly shorten the construction period. At the same time, the wedge-shaped adjustable sleeper beam structure provides a new idea for the design of future track plates, and the height adjustment of the track plate can be easily achieved through the wedge-shaped structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure of the prefabricated plate track structure provided by the embodiment of the present invention is schematically shown in FIG. Figure 1 (The double limit unit is not shown, the connecting fasteners are not locked, and two sets of prefabricated plate track structures are installed on the base plate body); Figure 2 The overall structure of the prefabricated plate track structure provided by the embodiment of the present invention is schematically shown in FIG. Figure 2 ; Figure 3 The overall structure of the prefabricated plate track structure provided by the embodiment of the present invention is schematically shown in FIG. Figure 3 (Track plate body not shown); Figure 4 2 is a schematic structural diagram of a distance adjusting block and an externally threaded steel pipe provided according to an embodiment of the present invention; Figure 5 2 is a schematic diagram of the overall structure of an internally threaded spiral pipe provided according to an embodiment of the present invention; Figure 6 is a longitudinal cross-sectional view provided according to an embodiment of the present invention; Figure 7 is a schematic diagram of the structure of a height adjustment component provided according to an embodiment of the present invention; Figure 8 is a schematic structural diagram of a track plate body provided according to an embodiment of the present invention; Fig. 9 is a schematic structural diagram of a base assembly provided according to an embodiment of the present invention.

[0020] The accompanying drawings include: distance adjusting block 1, spiral sleeve unit 2, track plate body 3, upper end face 4, lower end face 5, external threaded steel pipe 6, internal threaded spiral pipe 7, light hole structure 8, force adding tooth 9, low limit boss 10, high limit boss 11, limit groove 12, base plate body 13, connecting fastener 14. DETAILED DESCRIPTION

[0021] In the following, reference will be made to the Figure 1-9 Embodiments of the present invention are described. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following Figure 1-9 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0023] A spiral sleeve height-adjustable prefabricated plate track structure comprises a track plate assembly, a base assembly and a height-adjusting assembly located between the track plate assembly and the base assembly, wherein the height-adjusting assembly comprises relatively arranged distance-adjusting blocks 1 and a spiral sleeve unit 2 connected longitudinally between the distance-adjusting blocks 1. Figure 1 The direction indicated by M in the figure is horizontal. Figure 1In the direction indicated by N, the track plate assembly includes a track plate body 3 which is matched and fitted on the upper end of the distance adjusting block 1, and the base assembly includes a base plate body 13 which is placed on the lower end of the distance adjusting block 1.

[0024] Two or more sets of prefabricated plate track structures are arranged on the base plate body 13 in the transverse direction according to actual needs, and the track plate bodies 3 of adjacent prefabricated plate track structures are locked and connected by connecting fasteners 14. Figure 1 A combination of two sets of prefabricated plate track structures is shown in the figure. Those skilled in the art can set more sets of prefabricated plate track structures according to actual needs. The linking fasteners 14 can adopt a mortise and tenon structure or a bolt connection structure.

[0025] The height of the distance adjusting block 1 gradually increases from the inside to the outside in the longitudinal direction. Figure 2 , Figure 7 As shown, the upper end surface 4 of the distance adjusting block 1 is an inclined surface structure that tilts upward from the inside toward the longitudinal outside; the height of the two side portions of the track plate body 3 gradually decreases from the inside toward the longitudinal outside, as shown in FIG. Figure 2 , Figure 8 As shown, the lower end surfaces 5 on both sides of the track plate body 3 are inclined structures that tilt upward from the inside toward the longitudinal outside, and the upper end surface 4 of the distance adjusting block 1 is fitted and matched with the lower end surfaces 5 on both sides of the track plate body 3. When the horizontal position of the distance adjusting block 1 is adjusted, the distance adjusting block 1 can drive the track plate body 3 to move up and down through the cooperation of the upper end surface 4 and the lower end surface 5.

[0026] like Figure 3-Figure 7 As shown, the spiral sleeve unit 2 includes an externally threaded steel pipe 6 embedded in the inner end surface of the relatively arranged distance adjusting block 1, the externally threaded steel pipes 6 are arranged in pairs, and each pair of externally threaded steel pipes 6 is provided with an internally threaded spiral pipe 7, the external end surface of the externally threaded steel pipe 6 is provided with an external thread, and the inner end surface of the internally threaded spiral pipe 7 is provided with an internal thread matching the external thread.

[0027] like Figure 5 , Figure 6 As shown, two sections of internal thread structure are provided on the inner end face of the internal thread spiral tube 7, and the two sections of internal thread structure are matched with the external threads on the two oppositely arranged external thread steel tubes 6 respectively. The two sections of internal thread structure are symmetrically arranged with the middle vertical section of the internal thread spiral tube 7 as the reference. The middle part of the two sections of internal thread structure is a light hole structure 8, and a force adding tooth 9 is provided on the outer end face of the internal thread spiral tube 7. The force adding tooth 9 is arranged in the middle part of the internal thread spiral tube 7 and is located outside the light hole structure 8, which can ensure that when the internal thread spiral tube 7 rotates, the external thread steel tubes 6 on both sides are always synchronously moving towards each other or relative to each other, and the centering performance is good. By rotating the internal thread spiral tube 7, the external thread steel tube 6 can drive the distance adjusting block 1 to move horizontally in the longitudinal direction, and at the same time drive the track plate body 3 to move up and down.

[0028] like Figure 2 , Figure 3 , Fig. 9 As shown, the base assembly also includes a double limit unit disposed at the upper end of the base body 13, and the distance adjusting block 1 and the track plate body 3 are horizontally limited by the double limit unit. The double limit unit includes a low limit boss 10 disposed at the upper end of the base body 13, the low limit boss 10 is located between the relatively arranged distance adjusting blocks 1 and is used to horizontally limit the distance adjusting block 1. The double limit unit also includes a high limit boss 11 located at the lateral outer end of the low limit boss 10, the high limit boss 11 is located outside the lateral outer end surface of the distance adjusting block 1 and can horizontally limit the distance adjusting block 1. The two lateral ends of the track plate body 3 are matched with the high limit boss 11 to form a limit groove 12, and the high limit boss 11 can be accommodated in the limit groove 12. The track plate body 3 is horizontally and longitudinally limited by the cooperation of the high limit boss 11 and the limit groove 12. In actual use, the track plate body 3 and the inclined surface of the distance adjustment block 1 can be hard contact, or filled with elastic material to become a vibration reduction structure.

[0029] A method for adjusting the height of a spiral sleeve height-adjustable prefabricated plate track structure, wherein the height-adjusting operation is performed by the structure described above, and comprises the following steps: S1: Make prefabricated height adjustment components, prefabricated track plate components and base components.

[0030] When making a prefabricated height adjustment component, the external threaded steel pipe 6 is pre-buried in the longitudinal inner end face of the distance adjusting block 1. The external threaded steel pipe 6 and the distance adjusting block 1 are formed as one piece, and then the internal threaded spiral pipe 7 is assembled onto the external threaded steel pipe 6. The internal threaded spiral pipe 7 is rotated so that the external threaded steel pipes 6 on both sides move synchronously toward or relative to each other, thereby roughly adjusting the position of the distance adjusting block 1.

[0031] Specifically, the internal threaded spiral tube 7 needs to be assembled in pairs with the external threaded steel pipe 6 into an integrated structure when leaving the factory. At the same time, the internal threaded spiral tube 7 needs to be adjusted so that the two distance adjusting blocks 1 are closest to each other, which is the tightest state. After the adjustment is completed, the pre-installed distance adjusting blocks 1 and the installed height adjusting components are hoisted as a whole to the construction site.

[0032] S2: Install the base body 13 on site, and hoist the height adjustment assembly onto the base body 13. After the distance adjustment block 1 is hoisted onto the base body 13, the internal thread spiral tube 7 needs to be rotated again to finely adjust the position of the distance adjustment block 1 to meet the installation height requirement.

[0033] S3: hoist the track plate body 3 to the upper end of the distance adjusting block 1.

[0034] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0035] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A spiral sleeve height-adjustable prefabricated board track structure, characterized in that: The invention comprises a track plate assembly, a base assembly and a height adjustment assembly located between the track plate assembly and the base assembly; the height adjustment assembly comprises distance adjustment blocks (1) arranged opposite to each other and a spiral sleeve unit (2) connected between the distance adjustment blocks (1) in the longitudinal direction; the track plate assembly comprises a track plate body (3) matched and fitted on the upper end of the distance adjustment block (1); the base assembly comprises a base plate body (13) arranged on the lower end of the distance adjustment block (1) and a double limiting unit arranged on the upper end of the base plate body (13); the distance adjustment block (1) and the track plate body (3) are horizontally limited by the double limiting unit.

2. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 1, characterized in that: The height of the distance adjusting block (1) gradually increases from the inside to the outside in the longitudinal direction, that is, the upper end surface (4) of the distance adjusting block (1) is an inclined surface structure that is inclined upward from the inside to the outside in the longitudinal direction; the height of the two side portions of the track plate body (3) gradually decreases from the inside to the outside in the longitudinal direction, that is, the lower end surfaces (5) of the two side portions of the track plate body (3) are an inclined surface structure that is inclined upward from the inside to the outside in the longitudinal direction; and the upper end surface (4) of the distance adjusting block (1) is arranged to fit and match the lower end surfaces (5) of the two side portions of the track plate body (3).

3. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 2, characterized in that: The spiral sleeve unit (2) comprises an externally threaded steel pipe (6) pre-buried on the inner end surface of a relatively arranged distance adjusting block (1); the externally threaded steel pipes (6) are relatively arranged in pairs, and each pair of externally threaded steel pipes (6) is provided with an internally threaded spiral pipe (7); an external thread is provided on the outer end surface of the externally threaded steel pipe (6), and an internal thread matching the external thread is provided on the inner end surface of the internally threaded spiral pipe (7); by rotating the internally threaded spiral pipe (7), the externally threaded steel pipe (6) drives the distance adjusting block (1) to move horizontally in the longitudinal direction.

4. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 3, characterized in that: Two sections of internal thread structures are provided on the inner end surface of the internal thread spiral tube (7), and the two sections of internal thread structures are matched with the external threads on two external thread steel tubes (6) arranged opposite to each other. The two sections of internal thread structures are symmetrically arranged with the middle vertical section of the internal thread spiral tube (7) as a reference, and the middle of the two sections of internal thread structures is a light hole structure (8); and a force adding tooth (9) is provided on the outer end surface of the internal thread spiral tube (7), and the force adding tooth (9) is arranged in the middle of the internal thread spiral tube (7) and located outside the light hole structure (8).

5. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 4, characterized in that: The double limit unit comprises a low limit boss (10) arranged at the upper end of the base plate body (13); the low limit boss (10) is located between the distance adjusting blocks (1) arranged opposite to each other and is used to perform horizontal and longitudinal limit on the distance adjusting blocks (1).

6. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 5, characterized in that: The double limit unit further comprises a high limit boss (11) located at the lateral outer end of the low limit boss (10); the high limit boss (11) is located outside the lateral outer end surface of the distance adjusting block (1) and can perform horizontal lateral limit on the distance adjusting block (1).

7. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 6, characterized in that: More than two sets of prefabricated plate track structures are arranged in the transverse direction on the base plate body (13), and the track plate bodies (3) of adjacent prefabricated plate track structures are locked and connected by connecting fasteners (14).

8. The spiral sleeve height-adjustable prefabricated slab track structure according to claim 7, characterized in that: The two lateral ends of the track plate body (3) match the high limit boss (11) to form limit grooves (12), the high limit boss (11) can be accommodated in the limit grooves (12), and the track plate body (3) is horizontally and longitudinally limited by the high limit boss (11) and the limit grooves (12).

9. A method for adjusting the height of a spiral sleeve height-adjustable prefabricated plate track structure, wherein the height-adjusting operation is performed by the structure of claim 8, characterized in that: The steps include: S1: manufacturing prefabricated height adjustment components, prefabricated track plate components and base components; S2: Installing the base plate body (13) on site, and hoisting the height adjustment assembly onto the base plate body (13) as a whole; S3: Lift the track plate body (3) to the upper end of the distance adjusting block (1).

10. The method for adjusting the height of a spiral sleeve height-adjustable prefabricated panel track structure according to claim 9, characterized in that: When manufacturing the prefabricated height adjustment component in S1, the externally threaded steel pipe (6) is pre-buried in the longitudinal inner end surface of the distance adjusting block (1), and then the internally threaded spiral pipe (7) is assembled on the externally threaded steel pipe (6) and the position of the distance adjusting block (1) is roughly adjusted; in S2, after the distance adjusting block (1) is hoisted onto the base plate body (13), the internally threaded spiral pipe (7) needs to be rotated to finely adjust the position of the distance adjusting block (1) to meet the installation height requirement.

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