Spiral sleeve height-adjustable prefabricated slab track structure and height-adjusting method thereof

Abstract

The present application relates to the technical field of track engineering, and particularly relates to a spiral sleeve height-adjusting type prefabricated slab track structure, which comprises a track slab assembly, a base assembly and a height-adjusting assembly located between the track slab assembly and the base assembly, the height-adjusting assembly comprises oppositely arranged distance-adjusting blocks and a spiral sleeve unit connected between the distance-adjusting blocks in the longitudinal direction; the track slab assembly comprises a track slab body matched and attached to the upper end of the distance-adjusting block, the base assembly comprises a base slab body located at the lower end of the distance-adjusting block and a double-limiting unit arranged at the upper end of the base slab body, and the distance-adjusting block and the track slab body are horizontally limited by the double-limiting unit. The present application further provides a height-adjusting method of the spiral sleeve height-adjusting type prefabricated slab track structure. The present application can realize the positioning installation and on-site stepless height adjustment of the track slab, and can realize the transverse and longitudinal positioning of the height-adjusting sleeper beam and the track slab.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of track engineering, and particularly provides a spiral sleeve height-adjusting prefabricated track structure and a height-adjusting method thereof. BACKGROUND

[0002] A traditional prefabricated track plate is usually composed of a rail, a fastener, a prefabricated track plate, a self-compacting concrete filling layer, an isolation layer and a base. A U-shaped connecting steel bar is reserved at the bottom of the prefabricated track plate for connecting and fixing the prefabricated track plate with the concrete layer. During construction, the track plate needs to be hoisted to the required installation height, and concrete is poured downward through the reserved concrete pouring hole of the prefabricated track plate to form the filling layer. At the same time, the concrete filling layer forms a limiting boss cooperating with the base. As can be seen, the traditional prefabricated track plate installation method needs to hoist the track plate to the installation height, and needs to cast the concrete in place, which is complicated and has a long construction period.

[0003] In order to solve the above problems, the following patents related to the construction of prefabricated track plates are provided in the prior art:

[0004] 1. An invention patent with the patent number “202110255437.X” and the patent name “Combined track plate, prefabricated track system and installation construction method thereof”, which comprises 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 comprises a track plate and a limiting boss connected at the bottom of the track plate. The isolation layer is arranged at the bottom of the combined track plate. The base is a cast-in-place base. This scheme does not need to cast the filling layer, thereby reducing the process of pouring concrete on site.

[0005] 2. A utility model patent with the patent number “201820987547.9” and the patent name “Secondary pouring type upgradable general roadbed”, which comprises a combined roadbed plate unit and a connecting layer. The combined roadbed plate unit comprises 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 maintain a detachable state. A horizontal limiting structure is arranged between the prefabricated base plate and the prefabricated roadbed plate. This scheme has a short construction period and excellent damping performance.

[0006] The above-mentioned patent 1 focuses on reducing the on-site construction process, and the limiting boss is prefabricated with the track plate as a whole and directly installed on the cast-in-place base. However, the structure height cannot be adjusted, and the cast-in-place base needs high construction precision 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 limiting stability is limited.

[0007] In summary, how to design a prefabricated track structure and its height adjustment method which can improve the traditional prefabricated track and realize the positioning and installation of the track plate and the on-site infinitely height adjustment of the track plate during installation by pouring self-compacting concrete on site is an urgent problem to be solved at present. SUMMARY

[0008] To solve the above problems, the application provides a spiral sleeve height adjustment type prefabricated track structure, which can conveniently realize the adjustment of the height of the track plate, has a simple structure and low operation difficulty, and has high work efficiency. The application also provides a spiral sleeve height adjustment type prefabricated track structure and a height adjustment method thereof.

[0009] The spiral sleeve height adjustment type prefabricated track structure 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 oppositely arranged distance adjustment blocks and a spiral sleeve unit connected between the distance adjustment blocks in the longitudinal direction. The track plate assembly comprises a track plate body matched and attached to the upper end of the distance adjustment block. The base assembly comprises a base plate body located at the lower end of the distance adjustment block and a double limiting unit arranged at the upper end of the base plate body, which horizontally limits the distance adjustment block and the track plate body.

[0010] Further, the height of the distance adjustment block gradually increases from the inner side to the longitudinal outer side, that is, the upper end surface of the distance adjustment block is a slope structure that inclines upward from the inner side to the longitudinal outer side. The height of the two side portions of the track plate body gradually decreases from the inner side to the longitudinal outer side, that is, the lower end surface of the two side portions of the track plate body is a slope structure that inclines upward from the inner side to the longitudinal outer side. The upper end surface of the distance adjustment block and the lower end surface of the two side portions of the track plate body are matched and arranged.

[0011] Further, the spiral sleeve unit comprises an outer threaded steel pipe pre-buried on the inner end surface of the oppositely arranged distance adjustment blocks. The outer threaded steel pipes are oppositely arranged in pairs. Each pair of outer threaded steel pipes is provided with an inner threaded spiral pipe. The outer end surface of the outer threaded steel pipe is provided with an outer thread. The inner end surface of the inner threaded spiral pipe is provided with an inner thread matched with the outer thread. The outer threaded steel pipe drives the distance adjustment block to move horizontally along the longitudinal direction by rotating the inner threaded spiral pipe.

[0012] Further, the inner end surface of the inner threaded spiral pipe is provided with two sections of inner thread structures, and the two sections of inner thread structures are respectively matched with the outer threads on the two oppositely arranged outer threaded steel pipes. The two sections of inner thread structures are symmetrically arranged based on the vertical cross section of the middle part of the inner threaded spiral pipe. The middle part of the two sections of inner thread structures is a light hole structure. The outer end surface of the inner threaded spiral pipe is provided with a force adding tooth. The force adding tooth is arranged at the middle part of the inner threaded spiral pipe and located outside the light hole structure.

[0013] Further, 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 oppositely arranged distance adjustment blocks and is used to horizontally and longitudinally limit the distance adjustment blocks.

[0014] Further, the double-limiting unit further comprises a high-limiting boss located at the lateral outer end of the low-limiting boss, the high-limiting boss is located outside the lateral outer end face of the distance adjusting block and can horizontally limit the distance adjusting block in the lateral direction.

[0015] Further, the track plate body is provided with a limiting groove at the lateral two ends, the high-limiting boss can be accommodated in the limiting groove, and the high-limiting boss and the limiting groove can limit the track plate body in the horizontal and vertical directions.

[0016] Further, two or more sets of prefabricated track plate structures are arranged on the base plate body in the lateral direction, and the track plate bodies of adjacent prefabricated track plate structures are locked and connected by connecting fasteners.

[0017] A height adjusting method of the spiral sleeve height adjusting type prefabricated track plate structure, the height adjusting operation is performed by the above structure, and the height adjusting method comprises the following steps:

[0018] S1: prefabricated height adjusting assembly, prefabricated track plate assembly and base assembly are manufactured;

[0019] S2: the base plate body is installed on site, and the height adjusting assembly is hoisted to the base plate body as a whole;

[0020] S3: the track plate body is hoisted to the upper end of the distance adjusting block.

[0021] Further, in S1, the outer threaded steel pipe is pre-buried on the longitudinal inner end face of the distance adjusting block, and then the inner threaded spiral pipe is assembled on the outer threaded steel pipe and the position of the distance adjusting block is coarsely adjusted; after the distance adjusting block is hoisted to the base plate body in S2, the inner threaded spiral pipe needs to be rotated to finely adjust the position of the distance adjusting block to meet the installation height requirement.

[0022] Compared with the prior art, the prefabricated track plate structure based on the wedge-shaped adjustable sleeper and the spiral sleeve of the pre-buried outer threaded steel pipe can realize the positioning and installation of the track plate and the on-site stepless height adjustment, realize the lateral and longitudinal positioning of the height adjusting sleeper and the track plate, optimize the construction process of the poured concrete filling layer, simplify the construction process, greatly shorten the construction period, and provide a new idea for the design of future track plates. The height of the track plate can be easily adjusted through the wedge-shaped structure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the overall structure of the prefabricated track plate structure according to the embodiment of the present application Figure 1(double limit unit is not shown, connecting fastener is not locked, two groups of prefabricated plate track structures are installed on the base plate body)

[0024] Figure 2 is the overall structure schematic diagram of the prefabricated plate track structure according to the embodiment of the present application Figure 2 ;

[0025] Figure 3 is the overall structure schematic diagram of the prefabricated plate track structure according to the embodiment of the present application Figure 3 (track plate body is not shown)

[0026] Figure 4 is the structure schematic diagram of the distance adjusting block and the outer threaded steel pipe according to the embodiment of the present application

[0027] Figure 5 is the overall structure schematic diagram of the inner threaded spiral pipe according to the embodiment of the present application

[0028] Figure 6 is the longitudinal sectional view according to the embodiment of the present application

[0029] Figure 7 is the structure schematic diagram of the height adjusting assembly according to the embodiment of the present application

[0030] Figure 8 is the structure schematic diagram of the track plate body according to the embodiment of the present application

[0031] Figure 9 is the structure schematic diagram of the base plate assembly according to the embodiment of the present application.

[0032] The reference signs therein include: distance adjusting block 1, spiral sleeve unit 2, track plate body 3, upper end face 4, lower end face 5, outer threaded steel pipe 6, inner threaded spiral pipe 7, light hole structure 8, force adding tooth 9, low limit position boss 10, high limit position boss 11, limit slot 12, base plate body 13, connecting fastener 14. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present application will be described with reference to the accompanying drawings. In the following description, the same modules are denoted by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated. Figures 1-9 Embodiments of the present application will be described below. In the following description, the same modules are denoted by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated.

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but do not constitute limitation on the present application. Figures 1-9

[0035] ​The utility model provides a kind of spiral sleeve height-adjustable prefabricated slab track structure, including track slab assembly, base assembly and the height-adjustable assembly between track slab assembly and base assembly, height-adjustable assembly includes oppositely arranged distance adjusting block 1 and spiral sleeve unit 2 connected between distance adjusting block 1 along longitudinal direction, longitudinal direction is Figure 1 Direction shown in M, transverse direction is Figure 1 Direction shown in N, track slab assembly includes track slab body 3 matched and placed on the upper end of distance adjusting block 1, and base assembly includes base body 13 placed on the lower end of distance adjusting block 1.

[0036] Two or more sets of prefabricated slab track structure are arranged on base body 13 according to actual needs along transverse direction, and track slab body 3 of adjacent prefabricated slab track structure is locked and connected by connecting fastener 14, Figure 1 The combination of two sets of prefabricated slab track structure is shown, and more sets of prefabricated slab track structure can be arranged according to actual needs by those skilled in the art, and connecting fastener 14 can adopt mortise and tenon structure or bolt connection structure.

[0037] The height of distance adjusting block 1 gradually increases from inside to longitudinal outside, as shown in Figure 2 、 Figure 7 The upper end surface 4 of distance adjusting block 1 is inclined upward from inside to longitudinal outside, that is, the structure of inclined surface; the height of both sides of track slab body 3 gradually decreases from inside to longitudinal outside, as shown in Figure 2 、 Figure 8 The lower end surface 5 of both sides of track slab body 3 is inclined upward from inside to longitudinal outside, that is, the structure of inclined surface, and the upper end surface 4 of distance adjusting block 1 and the lower end surface 5 of both sides of track slab body 3 are matched and arranged, when adjusting the horizontal position of distance adjusting block 1, distance adjusting block 1 can drive track slab body 3 to move up and down through the cooperation of upper end surface 4 and lower end surface 5.

[0038] As shown in Figures 3-7 Spiral sleeve unit 2 includes outer thread steel pipe 6 embedded in the inner end surface of oppositely arranged distance adjusting block 1, and outer thread steel pipe 6 is oppositely arranged in pairs, and inner thread spiral pipe 7 is arranged on each pair of outer thread steel pipe 6, outer thread is arranged on the outer end surface of outer thread steel pipe 6, and inner thread is arranged on the inner end surface of inner thread spiral pipe 7, which is matched with outer thread.

[0039] As shown in Figure 5 、 Figure 6As shown, the inner end surface of the internally threaded spiral pipe 7 is provided with two internally threaded structures, which are respectively matched with the external threads on the two oppositely arranged external threaded steel pipes 6, and the two internally threaded structures are symmetrically arranged based on the vertical middle section of the internally threaded spiral pipe 7, and the middle part of the two internally threaded structures is a light hole structure 8, and the outer end surface of the internally threaded spiral pipe 7 is provided with a force tooth 9, which is arranged at the middle part of the internally threaded spiral pipe 7 and located outside the light hole structure 8, so as to ensure that the two external threaded steel pipes 6 are always in synchronous opposite or opposite motion when the internally threaded spiral pipe 7 rotates, and the centering performance is good, and the external threaded steel pipe 6 can drive the distance adjusting block 1 to move longitudinally and horizontally, and simultaneously drive the track plate body 3 to move up and down.

[0040] As shown in Figure 2 , Figure 3 , Figure 9 As shown, the base assembly further includes a double-limiting unit arranged at the upper end of the base plate body 13, which horizontally limits the distance adjusting block 1 and the track plate body 3. The double-limiting unit includes a low-limiting boss 10 arranged at the upper end of the base plate body 13, which is located between the oppositely arranged distance adjusting blocks 1 and horizontally longitudinally limits the distance adjusting block 1. The double-limiting unit further includes a high-limiting boss 11 located at the lateral outer end of the low-limiting boss 10, which is located outside the lateral outer end surface of the distance adjusting block 1 and can horizontally limit the distance adjusting block 1. The lateral two end parts of the track plate body 3 are matched with the high-limiting boss 11 to form a limiting groove 12, and the high-limiting boss 11 can be accommodated in the limiting groove 12, and the high-limiting boss 11 and the limiting groove 12 cooperate to horizontally limit the track plate body 3 in the lateral and longitudinal directions. In actual use, the track plate body 3 can be in hard contact with the inclined surface of the distance adjusting block 1, or the elastic material can be filled to change it into a damping structure.

[0041] A height adjusting method of a height-adjustable prefabricated track structure, which is adjusted by the above structure and includes the following steps:

[0042] S1: manufacturing a prefabricated height adjusting assembly, a prefabricated track plate assembly, and a base assembly.

[0043] When manufacturing the prefabricated height adjusting assembly, the external threaded steel pipe 6 is pre-buried on the longitudinal inner end surface of the distance adjusting block 1, the external threaded steel pipe 6 is integrally formed with the distance adjusting block 1, the internally threaded spiral pipe 7 is assembled on the external threaded steel pipe 6, the internally threaded spiral pipe 7 is rotated, and the two external threaded steel pipes 6 are synchronously opposite or opposite, so as to coarsely adjust the position of the distance adjusting block 1.

[0044] Specifically, the female threaded spiral pipe 7 needs to be assembled with the outer threaded steel pipe 6 into an integrated structure in pairs when leaving the factory, and the female threaded spiral pipe 7 needs to be adjusted so that the two distance adjusting blocks 1 are closest, at this time, the state is the tightest, after the adjustment is completed, the preassembled distance adjusting block 1 and the installed height adjusting assembly are hoisted to the construction site as a whole.

[0045] S2: install the base plate body 13 on site, and hoist the height adjusting assembly to the base plate body 13. After the distance adjusting block 1 is hoisted to the base plate body 13, the female threaded spiral pipe 7 needs to be rotated again to finely adjust the position of the distance adjusting block 1 to meet the installation height requirement.

[0046] S3: hoist the rail plate body 3 to the upper end of the distance adjusting block 1.

[0047] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

[0048] The specific embodiments of the present application do not constitute a limitation on the scope of protection of the present application. Any various other corresponding changes and modifications made according to the technical concept of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. A spiral sleeve height-adjustable precast slab track structure, characterized by, The application relates to a height-adjusting assembly for a track slab assembly and a base assembly, and belongs to the field of track slab assembly height adjustment.

2. The helical wrap height-adjustable precast panel track structure according to claim 1, characterized in that, The height-adjusting assembly comprises oppositely arranged distance-adjusting blocks (1) and a screw sleeve unit (2) connected between the distance-adjusting blocks (1) in the longitudinal direction; the track slab assembly comprises a track slab body (3) matched and attached to the upper ends of the distance-adjusting blocks (1); the base assembly comprises a base slab body (13) arranged at the lower ends of the distance-adjusting blocks (1) and a double-limiting unit arranged at the upper end of the base slab body (13), which is used for horizontally limiting the distance-adjusting blocks (1) and the track slab body (3); the height of the distance-adjusting blocks (1) gradually increases from the inner side to the longitudinal outer side, that is, the upper end surface (4) of the distance-adjusting blocks (1) is a slope structure which is inclined upward from the inner side to the longitudinal outer side; the height of the two side portions of the track slab body (3) gradually decreases from the inner side to the longitudinal outer side, that is, the lower end surface (5) of the two side portions of the track slab body (3) is a slope structure which is inclined upward from the inner side to the longitudinal outer side; and the upper end surface (4) of the distance-adjusting blocks (1) is matched and arranged with the lower end surface (5) of the two side portions of the track slab body (3); the screw sleeve unit (2) comprises externally-threaded steel pipes (6) pre-buried on the inner end surfaces of the oppositely arranged distance-adjusting blocks (1); the externally-threaded steel pipes (6) are oppositely arranged in pairs; each pair of externally-threaded steel pipes (6) is provided with an internally-threaded screw pipe (7); the outer end surface of the externally-threaded steel pipe (6) is provided with external threads; the inner end surface of the internally-threaded screw pipe (7) is provided with internal threads matched with the external threads; the externally-threaded steel pipe (6) drives the distance-adjusting blocks (1) to move horizontally along the longitudinal direction by rotating the internally-threaded screw pipe (7); the inner end surface of the internally-threaded screw pipe (7) is provided with two sections of internal thread structures which are matched with the external threads of the two oppositely arranged externally-threaded steel pipes (6) respectively; the two sections of internal thread structures are symmetrically arranged with the vertical section of the middle portion of the internally-threaded screw pipe (7) as the reference; the middle portion of the two sections of internal thread structures is a light hole structure (8); the outer end surface of the internally-threaded screw pipe (7) is provided with a force adding tooth (9) arranged at the middle portion of the internally-threaded screw pipe (7) and located outside the light hole structure (8).

3. The helical wrap height-adjustable precast panel track structure according to claim 2, wherein, The double-limiting unit comprises a low-limiting boss (10) arranged at the upper end of the base slab body (13); the low-limiting boss (10) is located between the oppositely arranged distance-adjusting blocks (1) and is used for horizontally and longitudinally limiting the distance-adjusting blocks (1).

4. The helical wrap height-adjustable precast panel track structure according to claim 3, wherein, The double-limiting unit further comprises a high-limiting boss (11) located at the transversely outer end of the low-limiting boss (10); the high-limiting boss (11) is located outside the transversely outer end surface of the distance-adjusting blocks (1) and can horizontally and transversely limit the distance-adjusting blocks (1).

5. The helical wrap height-adjustable precast panel track structure according to claim 4, wherein, Two or more prefabricated track slab structures are arranged on the base slab body (13) in the transverse direction; the track slab bodies (3) of the adjacent prefabricated track slab structures are locked and connected by connecting fasteners (14).

6. A method for height adjustment of a spiral sleeve height-adjustable precast slab track structure by the structure of claim 5, wherein The transversely two end portions of the track slab body (3) are provided with limiting grooves (12) matched with the high-limiting boss (11); the high-limiting boss (11) can be accommodated in the limiting grooves (12); the high-limiting boss (11) and the limiting grooves (12) are used for horizontally and transversely limiting the track slab body (3). The application further discloses a height-adjusting method for a track slab assembly and a base assembly. The height-adjusting method comprises the following steps: S1: making prefabricated height adjustment assembly, making prefabricated track plate assembly and base assembly; S2: installing base plate body (13) on site, and hoisting height adjustment assembly to base plate body (13) as a whole; S3: hoisting track plate body (3) to upper end of distance adjustment block (1).

7. The height adjustment method for the spiral sleeve height-adjustable precast slab track structure according to claim 6, characterized in that, In S1, outer threaded steel pipe (6) is pre-buried to longitudinal inner end face of distance adjustment block (1), and inner threaded spiral pipe (7) is assembled to outer threaded steel pipe (6) to coarsely adjust position of distance adjustment block (1); in S2, after distance adjustment block (1) is hoisted to base plate body (13), inner threaded spiral pipe (7) needs to be rotated to finely adjust position of distance adjustment block (1) to meet installation height requirement.

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