A spiral jacking type floating slab limiting device and a track system thereof

Abstract

The application discloses a spiral jacking type floating plate limiting device and a track system thereof and a construction technology, wherein a pre-buried cylinder is pre-buried and fixed in a floating plate, and the inner wall of the pre-buried cylinder is provided with a thread; a positioning cylinder is concentrically sleeved and fixed on a center anchoring rod; the pre-buried cylinder is concentrically sleeved on the center anchoring rod, and the inner wall of the pre-buried cylinder is spaced from the outer wall of the center anchoring rod to form a pouring cavity; a mounting channel is vertically penetrated in a thread head, the thread head is concentrically sleeved on the center anchoring rod through the mounting channel and located in the pouring cavity and above the positioning cylinder, the outer wall of the thread head is provided with a thread and is threadedly connected with the inner wall of the pre-buried cylinder, the thread head can reciprocate along the vertical direction relative to the center anchoring rod, and the bottom end of the thread head abuts against the top end of the positioning cylinder when jacking, and the bottom end of the thread head is spaced from the top end of the positioning cylinder after jacking. The application can not only limit the floating plate in horizontal orientation, but also jacks up the floating plate in situ.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail technology, more particularly to a spiral jacking type floating slab limiting device and a rail system thereof, and a construction process. BACKGROUND

[0002] With the rapid development of urban rail transit and intercity railway, the response of the track system gradually increases with the continuous increase of train speed, and only using fasteners or track bed vibration isolation pads for vibration isolation cannot meet the requirements of some sections with special vibration reduction requirements. Floating slab track bed technology is one of the most effective track vibration reduction and noise reduction technologies, especially in subways and urban light rails, and this technology has been widely used.

[0003] With the rapid development of urban rail transit and intercity railway, the response of the track system gradually increases with the continuous increase of train speed, and only using fasteners or track bed vibration isolation pads for vibration isolation cannot meet the requirements of some sections with special vibration reduction requirements. Floating slab track bed technology is one of the most effective track vibration reduction and noise reduction technologies, especially in subways and urban light rails, and this technology has been widely used.

[0004] In the floating slab track bed technology, the process of installing the vibration isolator between the floating slab and the base layer is as follows: a jack is used in combination with adjusting shims to lift the floating slab structure. Specifically, after the floating slab is placed on the base layer by a lifting mechanism, several jacks are embedded between the floating slab and the base layer to lift the floating slab by the jacks, and multiple shims are placed between the floating slab and the base layer to form an installation space for installing the vibration isolator between the floating slab and the base layer by the multiple jacks in combination with the multiple shims. Then, the multiple vibration isolators are connected to the base layer in the installation space. Finally, the floating slab needs to be lowered and connected to the top end of the multiple vibration isolators so that the floating slab can be supported by the multiple vibration isolators.

[0005] However, in the current process of installing the vibration isolator by the jacks and shims, multiple lifting operations are usually required to complete the lifting operation, which not only leads to complex operation and low construction efficiency, but also lacks a structure for positioning the floating slab in the horizontal direction when the floating slab is placed on the base layer, resulting in low installation accuracy of the floating slab. Moreover, due to the limitation of the size of the shims, the height can only be adjusted in steps within the size of the shims (the thickness of the adjusting shims is at least 2mm), and it cannot be continuously adjusted steplessly. Especially when the height needs to be adjusted again during use, it is extremely difficult.

[0006] At the same time, the floating slab needs to be lifted by the jacks, which consumes time to find external equipment (jacks), and transporting the external equipment (jacks) to the construction site for maintenance and replacement of the vibration isolators also consumes a lot of time, resulting in low efficiency of maintenance and replacement of the vibration isolators.

[0007] Therefore, how to provide a spiral limiting device and its track system and construction process to improve construction efficiency is a technical problem that those skilled in the art need to solve. SUMMARY

[0008] Therefore, the present application provides a spiral jacking type floating slab limiting device and its track system and construction process, aiming to at least solve some of the above technical problems.

[0009] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0010] In a first aspect, the embodiments of the present application provide a spiral jacking type floating slab limiting device, comprising:

[0011] The embedded cylinder is embedded and fixed in the floating slab and is vertically arranged, and both upper and lower ends of the embedded cylinder are open ends, and the inner wall of the embedded cylinder is provided with threads;

[0012] The center anchor rod is concentrically sleeved and fixed with a positioning cylinder, and the bottom end and the top end of the center anchor rod are extended outside the positioning cylinder; the embedded cylinder is concentrically sleeved on the center anchor rod, and the inner wall of the embedded cylinder is spaced from the outer wall of the center anchor rod and cooperates with the top end of the positioning cylinder to define a pouring cavity, and the bottom end of the positioning cylinder extends to the outside of the embedded cylinder through the opening of the bottom end of the embedded cylinder;

[0013] The threaded head is vertically penetrated with a mounting channel, and the threaded head is concentrically sleeved on the center anchor rod through the mounting channel and located in the pouring cavity and above the positioning cylinder, and the outer wall of the threaded head is provided with threads and threadedly connected with the inner wall of the embedded cylinder, and the threaded head can reciprocate along the vertical direction relative to the center anchor rod, and when jacking, the bottom end of the threaded head abuts against the top end of the positioning cylinder, and after jacking: the bottom end of the threaded head is spaced from the top end of the positioning cylinder.

[0014] Preferably, it further comprises a pressing plate, which is circular ring-shaped, sleeved on the center anchor rod and located in the pouring cavity and pressed against the top end of the threaded head, and the outer wall of the pressing plate is provided with threads to be threadedly connected with the inner wall of the embedded cylinder, and the pressing plate and the threaded head are connected and locked by a locking screw.

[0015] Preferably, when the pressing plate, the threaded head and the locking screw are removed from the pouring cavity, a compressible elastic body is connected to the pouring cavity, and a bottom end of the compressible elastic body is sealingly connected to a top end of the positioning cylinder, and a top end of the compressible elastic body is close to a top end of the embedded cylinder and is sealingly connected to an inner wall of the embedded cylinder and an outer wall of the central anchoring rod, respectively.

[0016] Preferably, a top end of the central anchoring rod is located in the embedded cylinder, and the embedded cylinder further comprises a cover plate covering the top end opening of the embedded cylinder and being detachably connected to the embedded cylinder.

[0017] Preferably, the central anchoring rod is a hollow cylindrical pipe penetrating from top to bottom, and a plurality of anchor hooks are fixed on the outer wall of the central anchoring rod close to the bottom end in a circumferential direction, and hook ends of the plurality of anchor hooks all extend downward below the bottom opening of the central anchoring rod.

[0018] Preferably, the hook ends of the anchor hooks are all bent away from the side wall of the central anchoring rod.

[0019] In a second aspect, embodiments of the present application provide a track system, comprising:

[0020] a concrete base;

[0021] a floating slab limiting device, the floating slab limiting device being a screw jacking type floating slab limiting device according to any one of claims 1-6, and a bottom end of the central anchoring rod being fixed in the concrete base, a bottom end of the positioning cylinder being positioned in contact on the concrete base, and the concrete base and the floating slab being supported and connected by a plurality of vibration isolators.

[0022] In a third aspect, embodiments of the present application provide a construction process for installing a screw jacking type floating slab limiting device on a concrete base to form a track system, comprising:

[0023] Step S1, a foundation pit is dug on the concrete base, a bottom end of the central anchoring rod is inserted into the foundation pit of the concrete base, and a bottom end of the positioning cylinder concentrically sleeved and fixed on the central anchoring rod is positioned in contact on the concrete base;

[0024] Step S2, an embedded cylinder embedded in the floating slab 10 is sleeved on the central anchoring rod, an inner wall of the embedded cylinder is spaced from an outer wall of the central anchoring rod, and the top end of the positioning cylinder and the inner wall of the embedded cylinder together define a pouring cavity, and the bottom end of the positioning cylinder extends to the outside of the embedded cylinder through an opening at the bottom end of the embedded cylinder;

[0025] Step S3, the threaded head is concentrically sleeved on the center anchoring rod through the installation channel, and is located in the pouring cavity and above the positioning cylinder, and the outer wall of the threaded head is threadedly connected with the inner wall of the embedded cylinder, and the threaded head can reciprocate along the vertical direction relative to the center anchoring rod;

[0026] When jacking: the threaded head is driven to move downward by screwing the threaded head to the bottom end of the threaded head abutting against the top end of the positioning cylinder, and the embedded cylinder can be driven to jack up; after jacking: the bottom end of the threaded head is spaced from the top end of the positioning cylinder.

[0027] Preferably, after the step S3, it further comprises: step S4: sleeving a circular ring-shaped pressing plate on the center anchoring rod, while the pressing plate is located between the inner wall of the embedded cylinder and the outer wall of the center anchoring rod, and is pressed on the top end of the threaded head, and the pressing plate is connected with the threaded head through a locking screw, while the outer wall of the pressing plate is provided with threads to be threadedly connected with the inner wall of the embedded cylinder.

[0028] Preferably, after the step S4, it further comprises: step S5: after the floating plate jacking work is completed, the locking screw, the pressing plate and the threaded head are unscrewed, and rubber is poured into the pouring cavity to be shaped as a compressible elastic body in the pouring cavity.

[0029] Through the above technical solution, compared with the prior art, the application provides a spiral jacking type floating plate limiting device and a track system thereof, and the construction process can achieve the following technical effects:

[0030] The application can not only limit the floating plate in the horizontal direction to improve the installation accuracy of the floating plate, but also jacks up the floating plate on site to save the time of searching for jacking tools such as jacks, and the threaded head drives the floating plate to ascend and descend in a spiral manner, which not only does not limit the continuity of the floating plate ascending and descending due to the thickness of the gasket, but also continuously and steplessly adjusts the height of the floating plate, and the operation is simple, thereby improving the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only embodiments of the application, and those skilled in the art can obtain other drawings according to the provided drawings without any creative effort.

[0032] Figure 1It is a structural schematic view of a spiral jacking type floating plate limiting device of the present application;

[0033] Figure 2 It is a front view of a spiral jacking type floating plate limiting device of the present application;

[0034] Figure 3 It is a longitudinal sectional view of a jacking floating plate state of a spiral jacking type floating plate limiting device of the present application;

[0035] Figure 4 It is a structural schematic view of a pre-buried cylinder in a spiral jacking type floating plate limiting device of the present application;

[0036] Figure 5 It is a structural schematic view of a central anchoring rod, a positioning cylinder and a plurality of anchor hooks connected in a spiral jacking type floating plate limiting device of the present application;

[0037] Figure 6 It is a longitudinal sectional view of a spiral jacking type floating plate limiting device in which a compressible elastic body is formed by pouring in a pouring cavity;

[0038] Figure 7 It is a sectional view of a spiral jacking type floating plate limiting device in which a compressible elastic body is formed by pouring in a pouring cavity, and is connected to a concrete base.

[0039] In the drawings, 1 is a pre-buried cylinder, 10 is a floating plate, 2 is a central anchoring rod, 3 is a positioning cylinder, 4 is a threaded head, 5 is a pressing plate, 6 is a locking screw, 7 is a cover plate, 21 is an anchor hook, 8 is a concrete base, 9 is a vibration isolator, 11 is a pre-buried cylinder connecting cover, 12 is a compressible elastic body, and 100 is a pouring cavity. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate 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 a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present application, it should be noted that unless otherwise expressly specified and limited, the terms "mount", "provided with", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] In a first aspect, embodiments of the present application provide a spiral jacking type floating plate limiting device, comprising:

[0044] The pre-buried barrel 1 is fixedly pre-buried in the floating plate 10 and vertically arranged, and the upper and lower ends of the pre-buried barrel 1 are both open ends, and the inner wall of the pre-buried barrel 1 is provided with threads;

[0045] The center anchoring rod 2 is concentrically sleeved and fixed with the positioning barrel 3, and the bottom end and the top end of the center anchoring rod 2 both extend outside the positioning barrel 3; the pre-buried barrel 1 is concentrically sleeved on the center anchoring rod 2, and the inner wall of the pre-buried barrel 1 is spaced from the outer wall of the center anchoring rod 2 and cooperates with the top end of the positioning barrel 3 to define a pouring cavity 100, and the bottom end of the positioning barrel 3 extends to the outside of the pre-buried barrel 1 through the opening at the bottom end of the pre-buried barrel 1;

[0046] The threaded head 4 is vertically penetrated with a mounting channel, and the threaded head 4 is concentrically sleeved on the center anchoring rod 2 through the mounting channel and located in the pouring cavity 100 and above the positioning barrel 3, and the outer wall of the threaded head 4 is provided with threads and threadedly connected with the inner wall of the pre-buried barrel 1, and the threaded head 4 can reciprocate along the vertical direction relative to the center anchoring rod 2, and when jacking, the bottom end of the threaded head 4 abuts against the top end of the positioning barrel 3; after jacking, the bottom end of the threaded head 4 is spaced from the top end of the positioning barrel 3.

[0047] Wherein, the material of the threaded head 4 can be metal or nylon; the material of the pre-buried barrel 1 can be metal or nylon.

[0048] When installing, a foundation pit for installing the present application is excavated in advance on the concrete base 8, and the bottom end of the center anchoring rod 2 of the present application is pre-buried in the foundation pit, so that the center anchoring rod 2 is rooted in the concrete base 8, and at the same time, the bottom end of the positioning barrel 3 can contact the surface layer of the concrete base 8 (the diameter of the positioning barrel 3 is greater than the diameter of the foundation pit), so as to avoid the bottom end of the center anchoring rod 2 from further penetrating into the interior of the concrete base 8, that is, the positioning barrel 3 serves as a positioning table for positioning the depth of the center anchoring rod 2 rooted in the concrete base 8;

[0049] When the embedded cylinder 1 is sleeved on the center anchoring rod 2 (since the embedded cylinder 1 is embedded and fixed in the floating slab 10, the floating slab 10 moves synchronously with the embedded cylinder 1, that is, at this time, the floating slab 10 is located above the concrete base 8), the embedded cylinder 1 can sway in the horizontal plane (a plane defined by the longitudinal axis and the transverse axis, wherein the direction in which the length of the steel rail extends is the longitudinal axis direction, and the direction perpendicular to the length direction of the steel rail is the transverse axis direction) relative to the center anchoring rod 2, and since the positioning cylinder 3 is concentrically sleeved and fixed on the center anchoring rod 2, and the embedded cylinder 1 is concentrically sleeved on the center anchoring rod 2, and the threaded head 4 is located between the inner wall of the embedded cylinder 1 and the outer wall of the center anchoring rod 2, the threaded head 4 can limit the sway of the embedded cylinder 1 in the horizontal plane, and since the embedded cylinder 1 is embedded and fixed in the floating slab 10, the threaded head 4 of the application can limit the floating slab 10 in the horizontal plane, thereby improving the installation accuracy of the floating slab 10 and improving the stability of the floating slab 10 during use.

[0050] In addition, when installing the vibration isolator 9, there is no need to spend time looking for a jack, nor is there a need to consume time for transporting the jack. Instead, the worker twists the threaded head 4 on the spot (the worker can use a matching tool carried on the body to twist the threaded head 4). Since the outer wall of the threaded head 4 is threadedly connected with the inner wall of the embedded cylinder 1, and the threaded head 4 can reciprocate in the vertical direction relative to the center anchoring rod 2, by twisting the threaded head 4, the threaded head 4 can first move downward to abut against the top end of the positioning cylinder 3, and then by continuing to twist the threaded head 4, since the threaded head 4 is blocked by the positioning cylinder 3 and cannot continue to move downward, the embedded cylinder 1 is driven to move upward to jack up the floating slab 10. At this time, an installation space for installing the vibration isolator 9 can be formed between the floating slab 10 and the concrete base 8.

[0051] After the vibration isolator 9 is installed, that is, after the floating slab 10 is jacked up, the threaded head 4 can be twisted in the opposite direction to drive the floating slab 10 to descend, so that the floating slab 10 falls and is connected to the vibration isolator 9, and at this time, the bottom end of the threaded head 4 is spaced apart from the top end of the positioning cylinder 3, so that the threaded head 4 does not bear the weight of the embedded cylinder 1 and the floating slab 10 (the floating slab 10 and the concrete base 8 are connected by a plurality of vibration isolators 9, so that the plurality of vibration isolators 9 bear the weight of the embedded cylinder 1 and the floating slab 10), thereby improving the service life of the threaded head 4.

[0052] In summary, the application can not only limit the position of the floating plate 10 in the horizontal direction to improve the installation accuracy of the floating plate 10, but also can locally jack up the floating plate 10 to save the time of finding jacking tools such as jacks, and the threaded head 4 drives the floating plate 10 to ascend and descend in a spiral lifting mode, which not only does not limit the continuity of the floating plate 10 due to the thickness of the gasket, but also continuously and steplessly adjusts the height of the floating plate 10, and the operation is simple, thereby improving the construction efficiency.

[0053] In order to further optimize the above technical solution, the top end of the threaded head 4 is provided with a "cross" groove or a "single" groove or an internal hexagonal hole.

[0054] The application adopts the above technical solution, and workers can rotate the threaded head 4 by carrying a rotating tool (which can be a wrench with an internal hexagonal hole).

[0055] In order to further optimize the above technical solution, the threaded head 4 is provided with a "cross" groove or a "single" groove or an internal hexagonal hole.

[0056] Specifically, the pressing plate 5 is provided with a mounting hole for connecting the locking screw 6, the tip end of the locking screw 6 penetrates through the mounting hole on the pressing plate 5 and abuts against the top end of the threaded head 4, and the head end of the locking screw 6 is limited on the top end of the pressing plate 5.

[0057] The material of the pressing plate 5 can be a metal piece or a nylon material.

[0058] When the threaded head 4 is not needed to be rotated to jack up the floating plate 10, the threaded head 4 is provided with the pressing plate 5 on the top end, and since the threaded head 4 is connected with the pressing plate 5 through the locking screw 6, and the outer wall of the pressing plate 5 is threadedly connected with the inner wall of the embedded cylinder 1, the threaded head 4 can be prevented from being loosened.

[0059] When the threaded head 4 needs to be rotated to jack up the floating plate 10, the locking screw 6 and the pressing plate 5 are sequentially removed, and then the threaded head 4 can be rotated.

[0060] In order to further optimize the above technical solution, when the pressing plate 5, the threaded head 4 and the locking screw 6 are removed from the pouring cavity 100, the compressible elastic body 12 is poured and connected in the pouring cavity 100, the bottom end of the compressible elastic body 12 is sealingly connected with the top end of the positioning cylinder 3, the top end of the compressible elastic body 12 is close to the top end of the embedded cylinder 1, and is sealingly connected with the inner wall of the embedded cylinder 1 and the outer wall of the center anchoring rod 2, respectively.

[0061] The application adopts the technical scheme, when the floating plate 10 completes the jacking work, and the vibration isolator 9 is connected between the floating plate 10 and the concrete base 8, the locking screw 6, the pressing plate 5 and the threaded head 4 are unscrewed, and the rubber or resin material is poured into the pouring cavity 100, so that the compressible elastic body 12 can be shaped in the pouring cavity 100, thereby limiting the horizontal position of the floating plate 10 through the compressible elastic body 12, the compressible elastic body 12 can only be elastically deformed in the vertical direction, and the compressible elastic body 12 formed by pouring the rubber or resin material in the pouring cavity 100 can be sealingly connected with the top end of the positioning cylinder 3, and can be sealingly connected with the inner wall of the embedded cylinder 1 and the outer wall of the center anchoring rod 2, so that the accuracy of limiting the floating plate 10 can be improved, and the movement of the floating plate 10 in the horizontal direction is reduced, so that the stability of the floating plate 10 in use can be further improved.

[0062] In order to further optimize the above technical scheme, the top end of the center anchoring rod 2 is located in the embedded cylinder 1, and further comprising: a cover plate 7, the cover plate 7 is arranged on the top end opening of the embedded cylinder 1, and is detachably connected with the embedded cylinder 1.

[0063] Among them, the cover plate 7 can be clamped with the top end of the embedded cylinder 1. For example, a limiting ring 11 is connected on the surrounding sidewall of the top end opening of the embedded cylinder 1, and the limiting ring 11 is arranged concentrically with the opening of the top end of the embedded cylinder 1, and an installation groove is opened at the top end of the limiting ring 11, and the periphery of the cover plate 7 is clamped in the installation groove; the cover plate 7 can be connected with the top end of the embedded cylinder 1 through a plurality of bolts.

[0064] The material of the cover plate 7 can be metal material, nylon material or composite material, etc.

[0065] The application adopts the above technical scheme, when the compressible elastic body 12 is formed, the periphery of the cover plate 7 is clamped in the installation groove, and the cover plate 7 can be connected with the top end of the embedded cylinder 1 through a plurality of bolts, so that the cover plate plays a protective role, and the integrity and appearance of the application are improved.

[0066] In order to further optimize the above technical scheme, the center anchoring rod 2 is a hollow cylindrical pipe penetrating from top to bottom, and a plurality of anchor hooks 21 are fixed on the outer wall of the center anchoring rod 2 near the bottom end in a circumferential direction, and the hook ends of the plurality of anchor hooks 21 all extend downward below the bottom opening of the center anchoring rod 2.

[0067] The application adopts the technical scheme, the bottom end of the center anchoring rod 2 is inserted into the foundation pit of the concrete base 8, the plurality of anchor hooks 21 are all inserted into the foundation pit, the threaded head 4 is concentrically sleeved on the center anchoring rod 2, the threaded head 4 is located between the inner wall of the embedded cylinder 1 and the outer wall of the center anchoring rod 2 and above the positioning cylinder 3, and after the outer wall of the threaded head 4 is threadedly connected with the inner wall of the embedded cylinder 1, the concrete or the anchoring adhesive can be poured into the hollow cylindrical pipe through the top opening of the hollow cylindrical pipe, the concrete in the hollow cylindrical pipe flows downward along the inner wall of the hollow cylindrical pipe and flows into the foundation pit through the lower end opening of the hollow cylindrical pipe, so that the foundation pit, the plurality of anchor hooks 21 and the lower end of the hollow cylindrical pipe are connected together, thereby improving the fastening of the connection between the center anchoring rod 2 and the concrete base 8.

[0068] In order to further optimize the above technical scheme, the hook ends of the anchor hooks 21 are all bent away from the side wall of the center anchoring rod 2.

[0069] The application adopts the above technical scheme, and the fastening of the connection between the center anchoring rod 2 and the concrete base 8 is further improved.

[0070] In a second aspect, embodiments of the application provide a track system, comprising:

[0071] a concrete base 8;

[0072] a floating slab limiting device, the floating slab limiting device being a screw jacking type floating slab limiting device according to any one of the above embodiments, the bottom end of the center anchoring rod 2 being fixed in the concrete base 8, the bottom end of the positioning cylinder 3 being positioned and contacted on the concrete base 8, and the concrete base 8 and the floating slab 10 being supported and connected by the plurality of vibration isolators 9.

[0073] The application forms a track system by connecting the concrete base 8 and the screw jacking type floating slab limiting device according to any one of the above embodiments:

[0074] During installation, a foundation pit for installing the application is excavated in advance on the concrete base 8, the bottom end of the center anchoring rod 2 of the application is inserted into the foundation pit, so that the center anchoring rod 2 is rooted into the concrete base 8, at the same time, the bottom end of the positioning cylinder 3 can be contacted on the surface layer of the concrete base 8 (the diameter of the positioning cylinder 3 is greater than the diameter of the foundation pit), so as to avoid the bottom end of the center anchoring rod 2 from further penetrating into the interior of the concrete base 8, that is, the positioning cylinder 3 serves as a positioning table for positioning the depth of the center anchoring rod 2 rooted into the concrete base 8;

[0075] When the embedded cylinder 1 is sleeved on the center anchoring rod 2 (since the embedded cylinder 1 is embedded and fixed in the floating slab 10, the floating slab 10 moves synchronously with the embedded cylinder 1, that is, at this time, the floating slab 10 is located above the concrete base 8), the embedded cylinder 1 can sway in the horizontal plane (a plane defined by the longitudinal axis and the transverse axis, wherein the direction in which the length of the steel rail extends is the longitudinal axis direction, and the direction perpendicular to the length of the steel rail is the transverse axis direction) relative to the center anchoring rod 2, and since the positioning cylinder 3 is concentrically sleeved and fixed on the center anchoring rod 2, and the embedded cylinder 1 is concentrically sleeved on the center anchoring rod 2, and the threaded head 4 is located between the inner wall of the embedded cylinder 1 and the outer wall of the center anchoring rod 2, the threaded head 4 can limit the sway of the embedded cylinder 1 in the horizontal plane, and since the embedded cylinder 1 is embedded and fixed in the floating slab 10, the threaded head 4 of the application can limit the floating slab 10 in the horizontal plane, thereby improving the installation accuracy of the floating slab 10 and improving the stability of the floating slab 10 during use.

[0076] In addition, when installing the vibration isolator 9, there is no need to spend time looking for a jack, nor is there a need to consume time for transporting the jack. Instead, the worker twists the threaded head 4 on the spot (the worker can use a matching tool carried on the body to twist the threaded head 4). Since the outer wall of the threaded head 4 is threadedly connected with the inner wall of the embedded cylinder 1, and the threaded head 4 can reciprocate in the vertical direction relative to the center anchoring rod 2, by twisting the threaded head 4, the threaded head 4 can first move downward to abut against the top end of the positioning cylinder 3, and then by continuing to twist the threaded head 4, since the threaded head 4 is blocked by the positioning cylinder 3 and cannot continue to move downward, the embedded cylinder 1 is driven to move upward to jack up the floating slab 10. At this time, an installation space for installing the vibration isolator 9 can be formed between the floating slab 10 and the concrete base 8.

[0077] After the vibration isolator 9 is installed, that is, after the floating slab 10 is jacked up, the threaded head 4 can be twisted in the opposite direction to drive the floating slab 10 to descend, so that the floating slab 10 falls and is connected to the vibration isolator 9, and at this time, the bottom end of the threaded head 4 is spaced apart from the top end of the positioning cylinder 3, so that the threaded head 4 does not bear the weight of the embedded cylinder 1 and the floating slab 10 (the floating slab 10 and the concrete base 8 are connected by a plurality of vibration isolators 9, so that the plurality of vibration isolators 9 bear the weight of the embedded cylinder 1 and the floating slab 10), thereby improving the service life of the threaded head 4.

[0078] In summary, the application can not only limit the horizontal position of the floating slab 10 to improve the installation accuracy of the floating slab 10, but also can lift the floating slab 10 in place to save the time of finding lifting tools such as jacks, and the threaded head 4 drives the floating slab 10 to ascend and descend in a spiral lifting manner, which not only does not limit the continuity of the floating slab 10 due to the thickness of the gasket, but also continuously and steplessly adjusts the height of the floating slab 10, and the operation is simple, thereby improving the construction efficiency.

[0079] In a third aspect, embodiments of the application provide a construction process for installing a screw jacking type floating slab limiting device on a concrete base to install a track system, comprising:

[0080] Step S1, a foundation pit is dug on the concrete base 8, the bottom end of the center anchor rod 2 is inserted into the foundation pit of the concrete base 8, and the bottom end of the positioning cylinder 3 concentrically sleeved and fixed on the center anchor rod 2 is positioned in contact with the concrete base 8;

[0081] Step S2, the pre-buried cylinder 1 pre-buried in the floating slab 10 is sleeved on the center anchor rod 2, and the inner wall of the pre-buried cylinder 1 is spaced from the outer wall of the center anchor rod 2 and cooperates with the top end of the positioning cylinder 3 to define a pouring cavity 100, and the bottom end of the positioning cylinder 3 extends to the outside of the pre-buried cylinder 1 through the opening at the bottom end of the pre-buried cylinder 1;

[0082] Step S3, the threaded head 4 is concentrically sleeved on the center anchor rod 2 through the installation channel thereof and located in the pouring cavity 100 and above the positioning cylinder 3, and the outer wall of the threaded head 4 is threadedly connected with the inner wall of the pre-buried cylinder 1, and the threaded head 4 can reciprocate in the vertical direction relative to the center anchor rod 2;

[0083] When jacking: the threaded head 4 is driven to move downward by screwing, so that the bottom end of the threaded head 4 abuts against the top end of the positioning cylinder 3 and drives the pre-buried cylinder 1 to j ack upward; after jacking: the bottom end of the threaded head 4 is spaced from the top end of the positioning cylinder 3.

[0084] The application adopts the above technical solution, which is simple and convenient to operate.

[0085] And, when the embedded cylinder 1 is sleeved on the center anchoring rod 2 (since the embedded cylinder 1 is embedded and fixed in the floating slab 10, the floating slab 10 moves synchronously with the embedded cylinder 1, that is, at this time, the floating slab 10 is located above the concrete base 8), the embedded cylinder 1 can sway in the horizontal plane (a plane defined by the longitudinal axis and the transverse axis, wherein the direction in which the length of the steel rail extends is the longitudinal axis direction, and the direction perpendicular to the length of the steel rail is the transverse axis direction) relative to the center anchoring rod 2, and since the positioning cylinder 3 is concentrically sleeved and fixed on the center anchoring rod 2, and the embedded cylinder 1 is also concentrically sleeved on the center anchoring rod 2, and the threaded head 4 is located between the inner wall of the embedded cylinder 1 and the outer wall of the center anchoring rod 2, the threaded head 4 can limit the sway of the embedded cylinder 1 in the horizontal plane, and since the embedded cylinder 1 is embedded and fixed in the floating slab 10, the threaded head 4 of the application can limit the floating slab 10 in the horizontal plane, thereby improving the installation accuracy of the floating slab 10 and improving the stability of the floating slab 10 during use.

[0086] In addition, when installing the vibration isolator 9, there is no need to spend time looking for a jack, nor is there a need to consume time for transporting the jack. Instead, the worker twists the threaded head 4 on the spot (the worker can use a matching tool carried on the body to twist the threaded head 4). Since the outer wall of the threaded head 4 is threadedly connected with the inner wall of the embedded cylinder 1, and the threaded head 4 can reciprocate in the vertical direction relative to the center anchoring rod 2, by twisting the threaded head 4, the threaded head 4 can first move downward until the bottom end of the threaded head 4 abuts against the top end of the positioning cylinder 3. Then, by continuing to twist the threaded head 4, since the threaded head 4 is blocked by the positioning cylinder 3 and cannot continue to move downward, the embedded cylinder 1 is driven to move upward, thereby lifting the floating slab 10. At this time, a mounting space for installing the vibration isolator 9 can be formed between the floating slab 10 and the concrete base 8.

[0087] After the vibration isolator 9 is installed, that is, after the floating slab 10 is lifted, the threaded head 4 can be untwisted in the opposite direction to drive the floating slab 10 to descend, so that the floating slab 10 falls and is connected to the vibration isolator 9. At this time, the bottom end of the threaded head 4 is spaced apart from the top end of the positioning cylinder 3, so that the threaded head 4 does not bear the weight of the embedded cylinder 1 and the floating slab 10 (the floating slab 10 and the concrete base 8 are connected by a plurality of vibration isolators 9, so that the plurality of vibration isolators 9 bear the weight of the embedded cylinder 1 and the floating slab 10), thereby improving the service life of the threaded head 4.

[0088] In summary, the application can limit the position of the floating plate 10 in the horizontal direction, thereby improving the installation accuracy of the floating plate 10, and can also lift the floating plate 10 in place to save the time of finding lifting tools such as jacks, and the floating plate 10 is driven to ascend and descend in a spiral manner through the threaded head 4, which not only does not limit the continuity of the floating plate 10 due to the thickness of the gasket, but also continuously and steplessly adjusts the height of the floating plate 10, and the operation is simple, thereby improving the construction efficiency.

[0089] In order to further optimize the above technical scheme, after step S3, further comprising: step S4: a circular ring-shaped pressing plate 5 is sleeved on the center anchor rod 2, the pressing plate 5 is located between the inner wall of the embedded cylinder 1 and the outer wall of the center anchor rod 2, and is pressed on the top end of the threaded head 4, and the pressing plate 5 is connected with the threaded head 4 through the locking screw 6, and the outer wall of the pressing plate 5 is provided with threads to be screwed with the inner wall of the embedded cylinder 1.

[0090] Specifically, the pressing plate 5 is provided with a mounting hole for connecting the locking screw 6, the tip of the locking screw 6 penetrates through the mounting hole on the pressing plate 5 and abuts against the top end of the threaded head 4, and the head end of the locking screw 6 is limited on the top end of the pressing plate 5.

[0091] The material of the pressing plate 5 can be a metal piece or a nylon material.

[0092] When the threaded head 4 is not needed to be screwed to lift the floating plate 10, the pressing plate 5 is pressed on the top end of the threaded head 4, and since the threaded head 4 is connected with the pressing plate 5 through the locking screw 6, and the outer wall of the pressing plate 5 is screwed with the inner wall of the embedded cylinder 1, the threaded head 4 can be prevented from being loosened.

[0093] When the threaded head 4 needs to be screwed to lift the floating plate 10, the locking screw 6 and the pressing plate 5 are sequentially removed, and then the threaded head 4 can be screwed.

[0094] In order to further optimize the above technical scheme, after step S4, further comprising: step S5: after the floating plate 10 is lifted and the vibration isolator 9 is connected between the floating plate 10 and the concrete base 8, the locking screw 6, the pressing plate 5 and the threaded head 4 are unscrewed, and the rubber or resin material is poured into the pouring cavity 100, so that the compressible elastic body 12 can be shaped in the pouring cavity 100, thereby limiting the horizontal position of the floating plate 10 through the compressible elastic body 12, and the compressible elastic body 12 can only be elastically deformed in the vertical direction, and since the compressible elastic body 12 formed by pouring the rubber or resin material in the pouring cavity 100 can be sealingly connected with the top end of the positioning cylinder 3, and can be sealingly connected with the inner wall of the embedded cylinder 1 and the outer wall of the central anchor rod 2, the accuracy of limiting the floating plate 10 can be improved, and the movement of the floating plate 10 in the horizontal direction can be reduced, thereby further improving the stability of the floating plate 10 during use.

[0095] In order to further optimize the above technical scheme, after step S5, further comprising: step S6: the cover plate 7 is covered on the top end opening of the embedded cylinder 1 and is detachably connected with the embedded cylinder 1.

[0096] Wherein, the cover plate 7 can be clamped with the top end of the embedded cylinder 1. For example, a limiting ring 11 is connected on the surrounding sidewall of the top end opening of the embedded cylinder 1, and the limiting ring 11 is concentrically arranged with the opening of the top end of the embedded cylinder 1, and a mounting groove is opened at the top end of the limiting ring 11, and the periphery of the cover plate 7 is clamped in the mounting groove; the cover plate 7 can be connected with the top end of the embedded cylinder 1 through a plurality of bolts.

[0097] The material of the cover plate 7 can be metal material, nylon material or composite material, etc.

[0098] The application adopts the above technical scheme, when the compressible elastic body 12 is formed, the periphery of the cover plate 7 is clamped in the mounting groove, and the cover plate 7 can be connected with the top end of the embedded cylinder 1 through a plurality of bolts, so that the cover plate plays a protective role, thereby improving the integrity and aesthetics of the application.

[0099] In order to further optimize the above technical scheme, the center anchoring rod 2 is a hollow cylindrical pipe which is through from top to bottom, and a plurality of anchor hooks 21 are fixed on the outer wall of the center anchoring rod 2 near the bottom end in a circumferential direction, and the hook ends of the plurality of anchor hooks 21 all extend downward below the bottom end opening of the center anchoring rod 2, so that in step S1, the bottom end of the center anchoring rod 2 is inserted into the foundation pit of the concrete base 8, and the plurality of anchor hooks 21 are also inserted into the foundation pit, and after step S3, the concrete is poured into the hollow cylindrical pipe through the top end opening of the hollow cylindrical pipe, and the concrete in the hollow cylindrical pipe flows downward along the inner wall of the hollow cylindrical pipe and flows into the foundation pit through the bottom end opening of the hollow cylindrical pipe, so as to pour and connect the foundation pit, the plurality of anchor hooks 21 and the bottom end of the hollow cylindrical pipe together, and then step S4 is performed.

[0100] The application adopts the above technical scheme, which can pour and connect the foundation pit, the plurality of anchor hooks 21 and the bottom end of the hollow cylindrical pipe together, thereby improving the fastening of the connection between the center anchoring rod 2 and the concrete base 8.

[0101] In order to further optimize the above technical scheme, the hollow cylindrical pipe is pre-connected with the positioning cylinder 3 and the plurality of anchor hooks 21 respectively.

[0102] The application adopts the above technical scheme, which does not need to be made temporarily on site, but can be directly used after being taken to the site, thereby improving work efficiency.

[0103] In order to further optimize the above technical scheme, the threaded head 4 is a prefabricated part.

[0104] The application adopts the above technical scheme, which does not need to be made temporarily on site, but can be directly used after being taken to the site, thereby improving work efficiency.

[0105] In order to further optimize the above technical scheme, the threaded head 4 is a cast-in-place part.

[0106] In order to further optimize the above technical scheme, the pressing plate 5 is a prefabricated part.

[0107] The application adopts the above technical scheme, which does not need to be made temporarily on site, but can be directly used after being taken to the site, thereby improving work efficiency.

[0108] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0109] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screw jacking type slab restraint device, characterized by, The utility model provides a kind of centering and anchoring device for floating slab, including: Pre-buried cylinder (1), the pre-buried cylinder (1) is pre-buried fixed in floating slab (10), and vertically arranged, and both upper and lower ends of the pre-buried cylinder (1) are open end, while the inner wall of the pre-buried cylinder (1) is provided with thread; Center anchoring rod (2), the center anchoring rod (2) is concentrically sleeved, and fixed with positioning cylinder (3), and the bottom end and top end of the center anchoring rod (2) are extended outside the positioning cylinder (3);The pre-buried cylinder (1) is concentrically sleeved on the center anchoring rod (2), and the inner wall of the pre-buried cylinder (1) is spaced from the outer wall of the center anchoring rod (2), and is cooperated with the top end of the positioning cylinder (3) to define pouring cavity (100), while the bottom end of the positioning cylinder (3) extends to the outside of the pre-buried cylinder (1) through the opening of the bottom end of the pre-buried cylinder (1); Threaded head (4), the threaded head (4) is vertically penetrated with installation channel, and the threaded head (4) is concentrically sleeved on the center anchoring rod (2) through the installation channel, and is located in the pouring cavity (100), while being located above the positioning cylinder (3), and the outer wall of the threaded head (4) has thread, and is threadedly connected with the inner wall of the pre-buried cylinder (1), while the threaded head (4) can reciprocate along vertical direction relative to the center anchoring rod (2), and when jacking, the bottom end of the threaded head (4) is abutted with the top end of the positioning cylinder (3), when jacking, the bottom end of the threaded head (4) is spaced from the top end of the positioning cylinder (3); Further including: pressing plate (5), the pressing plate (5) is circular ring, is sleeved on the center anchoring rod (2), and is located in the pouring cavity (100), and is pressed in the top end of the threaded head (4), while the outer wall of the pressing plate (5) has thread, to be threadedly connected with the inner wall of the pre-buried cylinder (1), and the pressing plate (5) and the threaded head (4) are connected and locked by locking screw (6); When the pressing plate (5), the threaded head (4) and the locking screw (6) are removed from the pouring cavity (100), the compressible elastomer (12) is connected in the pouring cavity (100), and the bottom end of the compressible elastomer (12) is sealingly connected with the top end of the positioning cylinder (3), while the top end of the compressible elastomer (12) is close to the top end of the pre-buried cylinder (1), and is sealingly connected with the inner wall of the pre-buried cylinder (1) and the outer wall of the center anchoring rod (2) respectively; The top end of the center anchoring rod (2) is located in the pre-buried cylinder (1), and further including: cover plate (7), the cover plate (7) is covered on the top end opening of the pre-buried cylinder (1), and is detachably connected with the pre-buried cylinder (1); The center anchoring rod (2) is hollow cylindrical tube penetrating up and down, and the outer wall of the center anchoring rod (2) is fixed with a plurality of anchor hooks (21) along the circumference near the bottom end, while the hook end of a plurality of the anchor hooks (21) extends downward below the bottom opening of the center anchoring rod (2).

2. The jacking float limiting device according to claim 1, wherein The hook ends of the anchor hooks (21) are bent away from the side wall of the central anchoring rod (2).

3. A track system, characterized in that Comprise: Concrete Base layer (8); The floating plate limiting device is a screw jacking type floating plate limiting device according to any one of claims 1-2, and the bottom end of the central anchoring rod (2) is fixed in the concrete base layer (8), while the bottom end of the positioning cylinder (3) is positioned in contact on the concrete base layer (8), and the concrete base layer (8) and the floating plate (10) are supported and connected by a plurality of vibration isolators.

4. A construction process using the spiral jacking type floating slab limiting device according to any one of claims 1 to 2, characterized in that, Comprise: Step S1, a foundation pit is dug on the concrete base layer (8), the bottom end of the central anchoring rod (2) is inserted into the foundation pit of the concrete base layer (8), and the bottom end of the positioning cylinder (3) concentrically sleeved and fixed on the central anchoring rod (2) is positioned in contact on the concrete base layer (8); Step S2, the pre-buried cylinder (1) pre-buried in the floating plate (10) is sleeved on the central anchoring rod (2), and the inner wall of the pre-buried cylinder (1) is spaced from the outer wall of the central anchoring rod (2) and cooperates with the top end of the positioning cylinder (3) to define a pouring cavity (100), and the bottom end of the positioning cylinder (3) extends to the outside of the pre-buried cylinder (1) through the opening at the bottom end of the pre-buried cylinder (1); Step S3, the threaded head (4) is concentrically sleeved on the central anchoring rod (2) through the mounting channel thereof and located in the pouring cavity (100) and above the positioning cylinder (3), and the outer wall of the threaded head (4) is threadedly connected with the inner wall of the pre-buried cylinder (1), and the threaded head (4) can reciprocate in the vertical direction relative to the central anchoring rod (2); when jacking: the threaded head (4) is driven to move downward by rotating the threaded head (4) until the bottom end of the threaded head (4) abuts against the top end of the positioning cylinder (3), and the pre-buried cylinder (1) is driven to jack up; after jacking: the bottom end of the threaded head (4) is spaced from the top end of the positioning cylinder (3).

5. A construction process according to claim 4, wherein, After step S3, it further comprises step S4: a circular ring-shaped pressing plate (5) is sleeved on the central anchoring rod (2), and the pressing plate (5) is located between the inner wall of the pre-buried cylinder (1) and the outer wall of the central anchoring rod (2) and is pressed on the top end of the threaded head (4), and the pressing plate (5) is connected with the threaded head (4) by a locking screw (6), and the outer wall of the pressing plate (5) is threaded to be threadedly connected with the inner wall of the pre-buried cylinder (1).

6. A construction process according to claim 5, wherein, After step S4, it further comprises step S5: after the jacking work of the floating plate (10) is completed, the locking screw (6), the pressing plate (5) and the threaded head (4) are unscrewed, and rubber is poured into the pouring cavity (100) to be shaped into a compressible elastic body (12) in the pouring cavity (100).

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