Grouting anti-floating limiting mechanism for high-speed rail CRTSIII type ballastless track slab

Abstract

The utility model relates to the technical field of ballastless track slab grouting, and discloses a high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism which comprises a plurality of sets of framed bent joists arranged above a track slab and used for conducting anti-floating limiting on the track slab, the track slab is arranged above a concrete bottom slab, and the concrete bottom slab is arranged above the concrete bottom slab. The concrete bottom plate is formed by pouring concrete on a ground foundation, and a gap is formed between the concrete bottom plate and the track plate and used for grouting concrete; the two ends of the framed bent joist are connected with turn buckles, the other ends of the two turn buckles are connected with screws, and the screws are installed on a ground foundation and used for tensioning the framed bent joist so that the framed bent joist can make close contact with the upper portion of a track plate. The framed bent joists are connected with the ground foundation, the tensioning force is accurately adjusted through the turn buckles, displacement of the track plate due to buoyancy during grouting is effectively prevented, the stability of the position of the track plate is guaranteed, and guarantee is provided for high precision of follow-up track laying.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of grouting technology of ballastless track slab, and particularly relates to a high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism. BACKGROUND

[0002] In the construction process of the CRTSIII type ballastless track slab, the grouting link is a key step for determining the connection quality of the track slab and the foundation. During grouting, concrete needs to be filled into the gap between the track slab and the concrete bottom plate, so that the track slab is firmly fixed on the foundation. However, in the actual grouting process, the upward force of the track slab caused by the buoyancy of the concrete during grouting cannot be effectively limited, and the track slab is prone to floating upward, which leads to the deviation of the position of the track slab, and further affects the smoothness and precision of the track. This not only increases the difficulty and cost of subsequent track adjustment, but also may pose a threat to the safety of high-speed rail operation.

[0003] At present, some existing anti-floating limiting devices on the market have many deficiencies. Generally, a heavy object (such as a sandbag or a steel block) is placed above the track slab, and the weight of the heavy object is used to offset the upward force generated during grouting. At the same time, the existing anti-floating limiting device has a complex structure, and the installation and debugging process is cumbersome, which requires a large amount of manpower and time, and is not conducive to improving the construction efficiency. Therefore, it has become an urgent problem in the field of high-speed rail construction to develop a new type of high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism which is efficient, reliable and has strong adaptability. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies of the prior art, the application provides a high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism.

[0006] (II) Technical solutions

[0007] To solve the above problems, the application provides the following technical solutions: a high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism, comprising a plurality of groups of bent frame joists arranged above the track slab and used for anti-floating limiting of the track slab, the track slab is arranged above a concrete bottom plate, the concrete bottom plate is formed by pouring concrete on a ground foundation, and a gap is arranged between the concrete bottom plate and the track slab and used for grouting concrete;

[0008] The two ends of the bent frame joist are connected with flower basket bolts, the other ends of the two flower basket bolts are connected with screws, and the screws are installed on the ground foundation and used for tensioning the bent frame joist to make the bent frame joist tightly contact the track slab above.

[0009] Two baffles are respectively provided on both sides of the track slab. The two baffles are vertically arranged above the concrete base slab to seal the gap between the concrete base slab and the two sides of the track slab. The side of the baffle opposite to the track slab is provided with an opening. A slider is slidably arranged inside the opening of the baffle. A push rod is provided on the other side of the slider to push the slider so that the baffle is in close contact with the side of the track slab.

[0010] Preferably, the cross-section of the baffle is U-shaped, the cross-section of the slider is I-shaped, and the slider is adapted to the baffle.

[0011] Preferably, a slot is provided on one side of the slider, and the slot is arranged in a "T" shape.

[0012] Preferably, a locking block is fixedly installed at one end of the push rod. The locking block slides inside the slot. Pushing the push rod causes the locking block to slide into the slot, and rotating the push rod causes the locking block to engage with the bottom of the slot, so that one end of the push rod is engaged inside the slot.

[0013] Preferably, a fixing column is vertically fixed at the bottom of both ends of the frame support beam. The fixing column is located on one side of the baffle. The lower end of the fixing column is provided with several mounting holes. The other end of the push rod passes through the mounting holes to one side of the fixing column.

[0014] Preferably, the push rod has a thread on one side of the fixed column, and at least two nuts are threaded onto the thread. The two nuts are located on both sides of the mounting hole. The length of the push rod between the baffle and the fixed column is adjusted by the nuts to make the baffle and one side of the track plate in close contact.

[0015] Preferably, each end of the turnbuckle is provided with a nut, the internal threads of the two nuts are arranged in opposite directions, and bolts are threaded inside both nuts. Rotating the turnbuckle is used to adjust the distance between the two bolts.

[0016] Preferably, the other end of the two bolts of the turnbuckle is provided with a mounting ring, which is used to rotate and connect the turnbuckle to the bracket beam and the screw respectively.

[0017] Preferably, the screw is fixedly installed on the ground foundation through mounting holes, and the upper end of the screw is provided with a mounting base, which is U-shaped.

[0018] Preferably, the upper end of the mounting base is provided with a rotating shaft, and the mounting ring is rotatably connected inside the mounting base through the rotating shaft.

[0019] (III) Beneficial Effects

[0020] Compared with the prior art, the high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism has the following beneficial effects:

[0021] 1. The high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism is connected with the ground foundation through the bent beam, and the tension force is accurately adjusted by using the basket bolt, so that the displacement of the track slab due to buoyancy during grouting is effectively prevented, the stability of the position of the track slab is ensured, and high precision for subsequent track laying is provided.

[0022] 2. The high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism is tightly fitted through the cooperation of the sliding block and the push rod between the baffle and the track slab, effectively prevents concrete leakage during grouting, ensures the grouting quality, avoids material waste and rework caused by leakage, and improves the construction efficiency and economic benefits.

[0023] Additional aspects and advantages of the application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the application will become apparent and be readily understood from the following description, including the appended drawings, in which:

[0025] Figure 1 is a structural schematic view of the high-speed rail CRTSIII type ballastless track slab grouting anti-floating limiting mechanism of the application;

[0026] Figure 2 is a structural schematic view of the limiting mechanism part of the application;

[0027] Figure 3 is a structural schematic view of the sliding block of the application;

[0028] Figure 4 is a structural schematic view of the screw of the application.

[0029] Reference signs: 1, bent beam; 2, concrete bottom plate; 3, track slab; 4, baffle; 41, sliding block; 42, clamping groove; 5, push rod; 51, thread; 52, clamping block; 6, fixed column; 61, mounting hole; 7, basket bolt, 71, nut; 72, bolt; 73, mounting ring; 8, screw; 81, mounting seat; 82, rotating shaft. DETAILED DESCRIPTION

[0030] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0031] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Please refer to Figures 1-4 The present application provides a new technical solution: a high-speed CRTSIII type ballastless track slab grouting anti-floating limiting mechanism, which comprises a plurality of groups of bent frame joists 1 arranged above the track slab 3, used for anti-floating limiting of the track slab 3, the track slab 3 is arranged above the concrete bottom plate 2, the concrete bottom plate 2 is formed by pouring concrete on the ground foundation, and a gap is arranged between the concrete bottom plate 2 and the track slab 3 for grouting concrete.

[0035] Both ends of the frame support beam 1 are connected to turnbuckles 7, and the other ends of the two turnbuckles 7 are connected to screws 8. The screws 8 are installed on the ground foundation and are used to tighten the frame support beam 1 so that it is in close contact with the track plate 3 above.

[0036] Two baffles 4 are respectively provided on both sides of the track slab 3. The two baffles 4 are vertically arranged above the concrete base slab 2 to seal the gap between the concrete base slab 2 and the two sides of the track slab 3. The side of the baffle 4 opposite to the track slab 3 is open. A slider 41 is slidably arranged inside the opening of the baffle 4. A push rod 5 is provided on the other side of the slider 41 to push the slider 41 so that the baffle 4 is in close contact with the side of the track slab 3.

[0037] Multiple sets of support beams 1 are installed above the track slab. The two ends of the support beams 1 are connected to the ground foundation by turnbuckles 7 and screws 8. The support beams 1 are tightened to make them in close contact with the track slab 3, and the track slab 3 is prevented from floating and limited. Baffles 4 are installed on both sides of the track slab. The baffles 4 can be in close contact with the sides of the track slab 3 by sliders 41 and push rods 5, sealing the gap between the track slab and the concrete base plate on both sides for grouting operations.

[0038] The connection between the support beam 1 and the ground foundation is used to prevent the track slab from floating and to ensure the stability of the track slab 3 during grouting; the baffle 4 can effectively seal the gap and prevent concrete leakage during grouting.

[0039] In some embodiments, the baffle 4 has a U-shaped cross-section, and the slider 41 has an I-shaped cross-section, with the slider 41 adapted to the baffle 4. The U-shaped baffle 4 and the I-shaped slider 41 are adapted to each other, allowing the slider to slide within the baffle. The fit between the two shapes achieves a stable sliding connection, improving the reliability of the device.

[0040] In some embodiments, a slot 42 is provided on one side of the slider 41, and the slot 42 is arranged in a "T" shape.

[0041] In some embodiments, a locking block 52 is fixedly installed at one end of the push rod 5. The locking block 52 slides inside the slot 42. Pushing the push rod 5 causes the locking block 52 to slide into the slot 42, and rotating the push rod 5 causes the locking block 52 to engage with the bottom of the slot 42, thereby locking one end of the push rod 5 inside the slot 42. Pushing the push rod 5 causes the locking block 52 to slide into the slot 42, and rotating the push rod 5 causes the locking block 52 to engage with the bottom of the slot 42, thereby locking one end of the push rod 5 inside the slot 42, thus fixing the position of the push rod 5, which can effectively ensure the stability of the baffle 4 and the side of the track plate 3 in close contact.

[0042] In some embodiments, the bottom of the bent frame joist 1 is vertically fixedly installed with a fixed column 6 at both ends, the fixed column 6 is arranged on one side of the baffle 4, a plurality of mounting holes 61 are formed in the lower end of the fixed column 6, and the other end of the push rod 5 penetrates through the mounting hole 61 to one side of the fixed column 6.

[0043] In some embodiments, the push rod 5 penetrates through one side of the fixed column 6 and is provided with a thread 51, at least two nuts are threadedly connected on the thread 51, the two nuts are located on both sides of the mounting hole 61, the length of the push rod 5 between the baffle 4 and the fixed column 6 is adjusted by the nuts, and the baffle 4 is tightly contacted with one side of the track plate 3. Rotating the nut can adjust the length of the push rod 5 between the baffle 4 and the fixed column 6, so that the baffle 4 is tightly contacted with one side of the track plate 3, so as to adapt to different construction requirements and improve the applicability of the device.

[0044] In some embodiments, the flower basket bolt 7 is provided with a nut 71 at both ends, respectively, the two nuts 71 are reversely arranged in the thread, the two nuts 71 are threadedly connected with a bolt 72, and rotating the flower basket bolt 7 is used to adjust the distance between the two bolts 72. Rotating the flower basket bolt 7 can adjust the distance between the two bolts 72, so as to adjust the tension of the bent frame joist 1.

[0045] In some embodiments, the other end of the bolt 72 at both ends of the flower basket bolt 7 is provided with a mounting ring 73, and the mounting ring 73 is rotatably connected on the bent frame joist 1 and the screw 8, respectively.

[0046] In some embodiments, the screw 8 is fixedly installed on the ground foundation through the mounting hole, the upper end of the screw 8 is provided with a mounting seat 81, and the mounting seat 81 is arranged in a "U" shape. The "U"-shaped mounting seat 81 facilitates the connection with other components, and has simple structure, easy installation and maintenance.

[0047] In some embodiments, the upper end of the mounting seat 81 is provided with a rotating shaft 82, and the mounting ring 73 is rotatably connected in the mounting seat 81 through the rotating shaft 82.

[0048] The high-speed CRTS III type ballastless track plate grouting anti-floating limiting mechanism is used, a plurality of row frame joists 1 are arranged above the track plate 3, the basket bolt 7 is connected at both ends of the row frame joist 1 respectively, the bolt 72 at both ends of the basket bolt 7 is rotatably connected with the row frame joist 1 and the screw 8 through the mounting ring 73 respectively, the screw 8 is fixed on the ground foundation, the connection between the row frame joist 1 and the ground foundation is preliminarily completed; the baffle 4 is vertically placed on both sides of the track plate 3, the sliding block 41 is slidably connected to the opening side of the baffle 4, the clamping block 52 at one end of the push rod 5 is aligned with the clamping groove 42 on the sliding block 41, the push rod 5 is pushed to make the clamping block 52 slide into the clamping groove 42, the push rod 5 is rotated to make the clamping block 52 clamped at the bottom of the clamping groove 42, the fixation of the push rod 5 and the sliding block 41 is realized, then the other end of the push rod 5 penetrates through the mounting hole 61 on the fixed column 6; the basket bolt 7 is rotated, the interval between the two bolts 72 is adjusted by using the reverse thread characteristics of the nut 71 at both ends, and the row frame joist 1 is tensioned, so that the row frame joist 1 is tightly attached above the track plate, and the track plate 3 is prevented from floating and limited.

[0049] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-speed CRTS III type ballastless track slab grouting anti-floating limiting mechanism, comprising a plurality of groups of bent truss joists arranged above the track slab and used for limiting the track slab from floating, characterized in that, The track slab is set above the concrete base slab, which is formed by pouring concrete on the ground foundation. A gap is provided between the concrete base slab and the track slab for grouting concrete. Both ends of the frame support beam are connected to turnbuckles, and the other end of each turnbuckle is connected to a screw. The screw is installed on the ground foundation to tighten the frame support beam so that it is in close contact with the track plate above. Two baffles are respectively provided on both sides of the track slab. The two baffles are vertically arranged above the concrete base slab to seal the gap between the concrete base slab and the two sides of the track slab. The side of the baffle opposite to the track slab is provided with an opening. A slider is slidably arranged inside the opening of the baffle. A push rod is provided on the other side of the slider to push the slider so that the baffle is in close contact with the side of the track slab.

2. The anti-floating and limiting mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 1, characterized in that, The cross-section of the baffle is U-shaped, and the cross-section of the slider is I-shaped. The slider is adapted to the baffle.

3. The anti-floating and limiting mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 2, characterized in that, A slot is provided on one side of the slider, and the slot is arranged in a "T" shape.

4. The anti-floating and limiting mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 1, characterized in that, A locking block is fixedly installed at one end of the push rod. The locking block slides inside the slot. Pushing the push rod causes the locking block to slide into the slot, and rotating the push rod causes the locking block to engage with the bottom of the slot, so that one end of the push rod is engaged inside the slot.

5. The anti-floating and limiting mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 1, characterized in that, The bottom of both ends of the frame support beam is vertically fixed with a fixing column. The fixing column is located on one side of the baffle. The lower end of the fixing column has several mounting holes. The other end of the push rod passes through the mounting holes to one side of the fixing column.

6. The anti-floating and limiting position mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 5, characterized in that, The push rod has a thread on one side of the fixed column, and at least two nuts are threaded onto the thread. The two nuts are located on both sides of the mounting hole. The length of the push rod between the baffle and the fixed column is adjusted by the nuts to make the baffle and one side of the track plate in close contact.

7. The anti-floating and limiting position mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 1, characterized in that, The turnbuckle has nuts at both ends, with the internal threads of the two nuts arranged in opposite directions. Both nuts are threaded with bolts inside. Rotating the turnbuckle is used to adjust the distance between the two bolts.

8. The anti-floating and limiting position mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 7, characterized in that, The turnbuckle has a mounting ring at the other end of each bolt, which is used to rotate and connect the turnbuckle to the support beam and the screw respectively.

9. The anti-floating and limiting mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 8, characterized in that, The screw is fixedly installed on the ground through mounting holes, and the upper end of the screw is provided with a mounting base, which is U-shaped.

10. The anti-floating and limiting mechanism for high-speed CRTS III type ballastless track slab grouting according to claim 9, characterized in that, The mounting base is provided with a rotating shaft at its upper end, and the mounting ring is rotatably connected inside the mounting base via the rotating shaft.

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