High-strength track segment and manufacturing equipment thereof

Abstract

The invention discloses a high-strength track segment and manufacturing equipment thereof, the high-strength track segment comprises a steel bar inner frame and a concrete main body, the concrete main body wraps the steel bar inner frame, the concrete main body is an arc-missing annular concrete sheet, and a pair of connecting assemblies are arranged on the two sides of the concrete main body; the steel bar inner frame comprises a first steel frame and a second steel frame, the invention relates to the technical field of tunnel segments, in the production process of the track segment, the bearing bottom mold is used as an interval for welding operation, and the external anchor rod is matched with the traction assembly, so that the prestress traction of the steel bar inner frame of the track segment is realized; prestress is applied to the inner arc stress position of the duct piece, so that in the application process of the duct piece, concentrated external force at the inner arc position can be effectively resisted, and the structural strength and the tensile property of the duct piece are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel segments, and in particular to a high-strength track segment and a manufacturing device thereof. Background Art

[0002] With the development of urban planning and the popularization and increase of vehicles, the pressure on ground transportation has increased accordingly. Underground transportation has improved the economy and environmental protection of urban and rural travel and has begun to be more and more popular among people. Therefore, more and more cities pay more attention to the application of underground transportation in traffic planning.

[0003] In the current underground transportation system, track segments are an important component of underground tunnels. The track segments form the supporting structure of underground tunnels, and combined with construction methods such as casting, the tracks have better support. However, the current segments are prone to tension deformation when encountering earthquakes or huge external forces, resulting in poor seismic toughness of the shield tunnel structure.

[0004] The current production of tunnel segments mainly involves the following production processes: steel bar welding, concrete pouring, molding and curing, demoulding and repairing. During the production process, concrete is directly poured onto the steel frame to form a composite segment structure. However, the current segment structure is often an arc-missing ring structure. After the segment is installed, its inner arc side is under pressure, which is particularly prone to cracks due to vibration. This is because no prestress is applied to the segment during pouring, resulting in poor seismic resistance and tension properties of the concrete structure.

[0005] In response to the above problems, at present, there is an application of increasing the structural strength of the pipe segment by increasing prestressing. However, this method is mostly used at the connection position of the pipe segment, and is mostly used for long straight steel bars. There is no better protection for the inner arc side of the pipe segment that is subject to higher tension. As a result, during the application of the pipe segment, the concrete on the inner arc side of the pipe segment has poor tensile strength and is prone to cracks. In addition, the current construction equipment is mainly based on direct casting design, which cannot effectively provide auxiliary functions for prestressing manufacturing, resulting in low construction efficiency and many inconveniences in operation. In view of this, in-depth research was conducted on the above problems, which led to the creation of this case. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a high-strength track segment and a manufacturing device thereof, which solves the existing background technology problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-strength track segment, comprising a steel inner frame and a concrete body, wherein the concrete body is wrapped outside the steel inner frame, the concrete body is a concrete plate in an arc-less ring shape, and a pair of connecting components are arranged on both sides of the concrete body;

[0008] The steel inner frame includes a first steel frame and a second steel frame, both of which are steel plates with fan-shaped structures, and the first steel frame and the second steel frame are processed by bending. Specifically, the first steel frame and the second steel frame are coaxially arranged in parallel, and a plurality of support rods arranged in a matrix are welded between the first steel frame and the second steel frame;

[0009] The arc diameter of the second steel frame is smaller than the arc diameter of the first steel frame, and the second steel frame and the first steel frame are respectively provided with a plurality of pairs of through slots;

[0010] The second steel frame is provided with a prestressed steel bar assembly connected to the first steel frame, and a plurality of pairs of prestressed anchor holes are provided on both sides of the first steel frame and the second steel frame in the circumferential direction, and the number of the prestressed steel bar assemblies is not less than 2;

[0011] The prestressed steel bar assembly includes a central tube, a central tube is welded on the center line of the second steel frame, the central axis of the central tube coincides with the radial direction of the second steel frame and the central tube is welded to the first steel frame, a pair of pulling tubes are staggered on both sides of the central tube, two ends of the pair of pulling tubes are respectively welded to the first steel frame and the second steel frame, and the central tube and the pair of pulling tubes apply prestress to the circumferential direction of the second steel frame;

[0012] A pair of the pulling tubes and the central tube are arranged in the annular direction of the first steel frame and the second steel frame;

[0013] Two pairs of positioning plug-in components are arranged at the four corners of the first steel frame and the second steel frame, and the first steel frame and the second steel frame are positioned corresponding to each other through the two pairs of positioning plug-in components.

[0014] The compressive strength of the concrete used for the concrete body is at least 30MPa, the concrete waterproof grade of the concrete body is not less than the anti-seepage grade of P10, and the tensile strength of the concrete body after molding is above 5MPa.

[0015] The connection assembly includes a dovetail guide groove, a dovetail guide groove is provided on one side of the concrete body, the dovetail guide groove runs through both ends of the concrete body, a dovetail guide block is provided on the other side of the concrete body, the dovetail guide block matches the width of the dovetail guide groove, and at least two pairs of embedded connecting rods are provided between the dovetail guide block and the dovetail guide groove.

[0016] The positioning plug-in assembly includes a positioning plug rod, the first steel frame is provided with a positioning plug rod, and the second steel frame is provided with a positioning plug tube corresponding to the positioning plug rod, and the positioning plug rod and the positioning plug tube are transitionally matched.

[0017] A high-strength rail segment manufacturing device comprises a processing frame, the processing frame is a rectangular frame, a casting support trough is arranged on the processing frame, a supporting bottom mold is assembled on the casting support trough, a cavity matching a concrete body is opened in the supporting bottom mold, a closed top cover is hinged on the casting support trough, a casting port is arranged on the closed top cover, and a pulling corresponding hole position corresponding to a prestressed anchor hole is arranged on the supporting bottom mold;

[0018] A pouring frame is arranged on the upper part of the processing frame, a pouring measuring bucket is installed on the pouring frame, and the bottom opening of the pouring measuring bucket corresponds to the pouring port;

[0019] The processing frame is provided with a roving vibration structure, and the roving vibration structure performs mechanical vibration on the casting support groove;

[0020] The central tube and the pair of pulling tubes are both internally threaded tubes, a first prestressed counter-tension rod is connected and installed in the central tube, a pair of second prestressed counter-tension rods are threadedly connected to the pair of pulling tubes, the first prestressed counter-tension rod and the pair of second prestressed counter-tension rods are respectively connected with three adjustment sleeves, the middle sections of the first prestressed counter-tension rod and the pair of second prestressed counter-tension rods are both provided with adjustment knobs, the first prestressed counter-tension rod and the pair of second prestressed counter-tension rods are connected with three adjustment components, and the three adjustment components correspond to the three adjustment sleeves;

[0021] The casting frame is provided with a fixed plate, and the fixed plate is provided with a prestressed pulling structure connected with three adjusting sleeves;

[0022] The prestressed pulling structure comprises an adjustment hole, the fixing plate is provided with an adjustment hole, the adjustment hole is equipped with an adjustment pulling screw rod, the bottom end of the adjustment pulling screw rod is connected with a pulling plate, the pulling plate is connected with three adjustment sleeves respectively by at least two screws, a pair of guide rods are provided on both sides of the adjustment hole, a pair of guide rings are provided on the pulling plate, and the pair of guide rings are sleeved on the pair of guide rods;

[0023] The adjustment component includes a thread groove, the first prestressed back-pull rod is provided with a thread groove, a back-thrust screw is threadedly connected in the thread groove, and the back-thrust screw is in corresponding contact with the adjustment sleeve through a limiting ring washer.

[0024] A pair of guide rails are arranged at the bottom of the processing frame, a pair of guide blocks are arranged at the bottom of the casting support groove, the pair of guide blocks are assembled on the pair of guide rails, a pair of linear screw modules are arranged on the pair of guide rails, and the pair of linear screw modules are threadedly engaged with the pair of guide blocks.

[0025] The casting support groove is provided with installation holes corresponding to the pulling corresponding holes, and the installation holes are installed with fixed anchor rods, which penetrate through the pulling corresponding holes and are threadedly connected with the prestressed anchor holes.

[0026] The first prestressed counter-tension rod and the second prestressed counter-tension rod are both columnar rods, the adjusting knob is a plate with a polygonal structure, and the adjusting knob is integrally arranged with the first prestressed counter-tension rod and the second prestressed counter-tension rod.

[0027] The closed top cover is provided with through holes corresponding to the first prestressed anti-tension rod and the second prestressed anti-tension rod, and a closed ring is arranged inside the through holes, and the closed ring contacts the top openings of the central tube and a pair of pulling tubes.

[0028] The roving vibration structure comprises a roving track, which is mounted on the inner side of a casting frame, on which a roving assembly is mounted, on which a vibrator is mounted, and the vibrator vibrates the side wall of the corresponding casting support trough.

[0029] The patrol assembly includes a patrol linear motor, a control slider is mounted on the patrol track, a pair of position switches are arranged at both ends of the patrol track, the control slider is connected to the vibrator, and the sliding end of the patrol linear motor is connected to the control slider.

[0030] Beneficial effects:

[0031] The present invention provides a high-strength rail segment and its manufacturing equipment. It has the following beneficial effects: in the production process of the rail segment, by using the supporting bottom mold as the welding operation interval, using the external anchor rod and the pulling assembly to achieve prestressed pulling of the steel inner frame of the rail segment, and applying prestress to the inner arc stress-bearing part of the segment, so that the segment can effectively resist the concentrated external force at the inner arc during application, and improve the structural strength and tensile properties of the segment. It also has the following specific advantages;

[0032] 1. First, the processing equipment of the track segment is designed based on the frame of the track structure and the inner mold for the segment forming. The improvement of the two is based on the two equipment themselves. The processing equipment of the track segment is provided with a prestressed pulling structure matched with the prestressed steel bar assembly. The prestressed steel bar assembly can be pre-tensioned by the prestressed pulling structure and the adjusting assembly. Therefore, there are few improvements, which is easy to implement and has good economy.

[0033] 2. A prestressed steel bar assembly consisting of a central tube and a pair of pulling tubes is set inside the track segment. The prestressed steel bar assembly is welded and easy to operate. The central tube and a pair of pulling tubes form the prestressed tensioning anchor points of the steel bar inner frame, which has little impact on the main structure of the segment.

[0034] 3. The track segment uses the first steel frame and the second steel frame of the integral sheet metal as the welding basis of the steel inner frame, which effectively improves the integrity of the steel inner frame. Prestressed anchor holes are set on both sides of the first steel frame and the second steel frame to cooperate with the prestressed steel bar assembly to achieve tensioning of the arc position of the steel inner frame, thereby achieving prestressing on the segment and improving the tensile strength of the segment;

[0035] 4. A pair of roving vibrating structures are arranged on both sides of the processing equipment of the track segment. During the pouring process, the roving vibrating structures are used to perform vibration synchronously to ensure the uniformity of the pouring of the segment and further improve the structural strength of the segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the first three-dimensional structure of a high-strength track segment described in the present invention.

[0037] Figure 2 This is a schematic diagram of the second three-dimensional structure of a high-strength track segment described in the present invention.

[0038] Figure 3 This is a schematic diagram of the cross-sectional structure of a high-strength track segment described in the present invention.

[0039] Figure 4 This is a schematic diagram of the steel inner frame structure of a high-strength track segment described in the present invention.

[0040] Figure 5 This is a schematic diagram of the partial cross-sectional structure of a high-strength track segment described in the present invention.

[0041] Figure 6 This is a third stereoscopic structural schematic diagram of a high-strength rail segment manufacturing device according to the present invention.

[0042] Figure 7 This is a schematic diagram of the main structure of a high-strength rail segment manufacturing device according to the present invention.

[0043] Figure 8 This is a schematic diagram of the blasting structure of a high-strength rail segment manufacturing equipment described in the present invention.

[0044] Fig. 9 This is a schematic cross-sectional structure diagram of a high-strength rail segment manufacturing device according to the present invention.

[0045] Fig.10 The invention provides a high-strength rail segment manufacturing device Fig. 9 Schematic diagram of the local enlarged structure at point A in the middle.

[0046] Fig.11This is a fourth stereoscopic structural schematic diagram of a high-strength rail segment manufacturing device according to the present invention.

[0047] Fig.12 This is a fifth stereoscopic structural schematic diagram of a high-strength rail segment manufacturing device according to the present invention.

[0048] Fig.13 The invention provides a high-strength rail segment manufacturing device Figure 6 Schematic diagram of the local enlarged structure at point B in the middle.

[0049] In the figure: 1. Steel bar inner frame; 2. Concrete body; 3. Prestressed steel bar assembly; 4. Processing frame; 5. Casting support groove; 6. Support bottom mold; 7. Tour vibrating structure; 8. Prestressed pulling structure; 9. Adjustment assembly; 11. First steel frame; 12. Second steel frame; 13. Support rod; 14. Through slot; 15. Prestressed anchor hole; 16. Positioning plug rod; 17. Positioning plug pipe; 21. Dovetail guide groove; 22. Dovetail guide block; 23. Embedded inner pipe; 24. Embedded threaded pipe; 31. Center pipe; 32. Pulling pipe; 41. Casting frame; 42. Casting bucket; 43. Guide rail; 51. Closed top cover; 52. Casting port; 53. Perforation; 54. Closed ring; 61. Pulling corresponding hole position; 62. Fixed anchor rod; 71. Circulating rail; 72. Vibrator; 73. Circulating linear motor; 74. Control slide block; 75. Position switch; 81. Fixed plate; 82. Adjusting hole position; 83. Adjusting pulling screw rod; 84. Pulling plate; 85. Guide rod; 86. First prestressed counter-pull rod; 87. Second prestressed counter-pull rod; 88. Adjusting sleeve; 89. Adjusting knob; 91. Threaded groove; 92. Back-thrust screw; 93. Limiting ring gasket; 94. Nut. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 13The present invention provides an implementation scheme: in the construction process of modern underground rail transit, track segments are a material commonly used in shield construction. The current production of track segments mainly relies on casting construction. However, in the application process of modern track segments, due to the characteristics of concrete, the track segments are prone to cracks on the inner arc side when subjected to geological movement or settlement force. This is because the tensile properties of concrete are poor, and the complex force direction of geological movement makes the segments susceptible to lateral forces, resulting in uneven force on the inner arc side of the concrete.

[0052] In response to the above problems, there is currently a method of applying prestress on both sides of the steel tendons to increase the tensile strength of concrete. However, the current prestressed steel bar construction is mainly for straight bars. The arc-shaped main bars of the track segment cannot be prestressed to improve their tensile properties, which cannot provide more help for the tensile strength of the track segment.

[0053] Embodiment 1: In view of the above-mentioned problems of the segment structure, the present application discloses a high-strength track segment, comprising a steel inner frame 1 and a concrete body 2, wherein the concrete body 2 is wrapped outside the steel inner frame 1, the steel inner frame 1 is used as the internal skeleton of the segment, and the concrete body 2 wrapped outside the steel inner frame 1 is used as the supporting body of the segment, and the concrete body 2 is a concrete plate with an arc-less ring. During use, when the track segment is installed after the shield, a pair of connecting components are provided on both sides of the concrete body 2, and the adjacent track segments can be connected through the pair of connecting components, and the construction of the shield pipeline is realized by splicing;

[0054] According to the instruction manual Figure 1 -Attached Figure 5 It can be seen that the above-mentioned steel inner frame 1 includes a first steel frame 11 and a second steel frame 12. The first steel frame 11 and the second steel frame 12 are both steel plates of fan-shaped structure. The first steel frame 11 and the second steel frame 12 are bent. Specifically, the first steel frame 11 and the second steel frame 12 are coaxially arranged. The first steel frame 11 and the second steel frame 12 are parallel to form the main reinforcement of the pipe segment. Different from the use of steel bar welding, the integrally bent steel plate structure is used as the main reinforcement for welding, which improves the integrity of the steel bars of the pipe segment, and thus facilitates the welding operation of the steel inner frame 1. The first steel frame 1 1 is coaxially arranged in parallel with the second steel frame 12, and a plurality of support rods 13 arranged in a matrix are welded between the first steel frame 11 and the second steel frame 12, and the plurality of support rods 13 are used as supports to fill between the first steel frame 11 and the second steel member, and the support rods 13 play the role of supporting ribs. In order to ensure the strength of the pipe segment after forming, the compressive strength of the concrete used in the concrete body 2 is at least 30MPa, the concrete waterproof grade of the concrete body 2 is not less than the anti-seepage grade of P10, and the tensile strength of the concrete body 2 after forming is above 5MPa;

[0055] Specifically, the arc diameter of the second steel frame 12 is smaller than the arc diameter of the first steel frame 11, the second steel frame 12 is close to the inner arc side of the concrete body 2, and the first steel frame 11 is close to the outer arc side of the concrete body 2. The second steel frame 12 and the first steel frame 11 are respectively provided with a plurality of pairs of through grooves 14, and the plurality of pairs of through grooves 14 are used for passing during the concrete pouring process;

[0056] According to the instruction manual Figure 1 -Attached Figure 5 It can be seen that the above-mentioned connection assembly includes a dovetail guide groove 21, a dovetail guide groove 21 is opened on one side of the concrete body 2, the dovetail guide groove 21 runs through both ends of the concrete body 2, and a dovetail guide block 22 is arranged on the other side of the concrete body 2, the dovetail guide block 22 matches the width of the dovetail guide groove 21, and at least two pairs of embedded connecting rods are arranged between the dovetail guide block 22 and the dovetail guide groove 21;

[0057] During the specific implementation process, the dovetail guide block 22 on the concrete body 2 matches the dovetail guide groove 21. When the track segments are spliced, the dovetail guide block 22 on one side of the concrete body 2 is inserted into the dovetail guide groove 21 of the other segment's concrete body 2. The dovetail guide groove 21 and the dovetail guide block 22 guide the guiding effect, thereby realizing the splicing of the track segments. Then, the embedded connecting rods on the dovetail guide block 22 and the dovetail guide groove 21 correspond to each other. The embedded connecting rods include an embedded inner tube 23 arranged on one side of the dovetail guide groove 21, and an embedded threaded tube 24 is arranged on the corresponding dovetail guide block 22. After the segments are spliced, the embedded screw is penetrated through the embedded inner tube 23 and connected to the embedded threaded tube 24 to realize the splicing of the segments.

[0058] Furthermore, the second steel frame 12 is provided with a prestressed steel bar assembly 3 connected to the first steel frame 11, and a plurality of pairs of prestressed anchor holes 15 are provided on both sides of the first steel frame 11 and the second steel frame 12 in the circumferential direction. Prestress is applied to the first steel frame 11 and the second steel frame 12 through the prestressed steel bar assembly 3, and the prestressing method is adopted to perform prestressing before the first steel frame 11 and the second steel frame 12 are welded, so that the steel bar inner frame 1 is subjected to prestress, and the tensioning effect is released after the pouring is completed, so that the pipe segment has tensile resistance, and the specific number of prestressed steel bar assemblies 3 is not less than 2, so that the prestress applied to the first steel frame 11 and the second steel frame 12 is more evenly distributed;

[0059] According to the instruction manual Figure 1 -Attached Figure 5It can be seen that the above-mentioned prestressed steel bar assembly 3 includes a central tube 31, the central tube 31 is welded on the center line of the second steel frame 12, the central axis of the central tube 31 coincides with the radial direction of the second steel frame 12 and the central tube 31 is welded to the first steel frame 11, a pair of pulling tubes 32 are staggered on both sides of the central tube 31, and the two ends of the pair of pulling tubes 32 are respectively welded to the first steel frame 11 and the second steel frame 12, and the central tube 31 and the pair of pulling tubes 32 apply prestress to the annular direction of the second steel frame 12;

[0060] In the specific implementation process, the central tube 31 of the prestressed steel bar assembly 3 corresponds to the center line of the first steel frame 11 and the second steel frame 12, a pair of pulling tubes 32 and the central tube 31 are arranged in the circumferential direction of the first steel frame 11 and the second steel frame 12, and a pair of pulling tubes 32 correspond to the inclined radial positions of the first steel frame 11 and the second steel frame 12, and a plurality of prestressed anchor holes 15 are arranged at the circumferential ends of the first steel frame 11 and the second steel frame 12, which are connected to the external fixed anchor rods 62 through the prestressed anchor holes 15 to realize the position limitation of the first steel frame 11 and the second steel frame 12, and also play the role of applying prestress.

[0061] According to the instruction manual Figure 1 -Attached Figure 5 It can be seen that in order to facilitate the corresponding arrangement of the first steel frame 11 and the second steel frame 12 for welding, two pairs of positioning plug-in components are provided at the four corners of the first steel frame 11 and the second steel frame 12. The first steel frame 11 and the second steel frame 12 are positioned correspondingly to each other through the two pairs of positioning plug-in components. When welding is arranged, the positioning plug-in components at the four corners of the first steel frame 11 and the second steel frame 12 are first plugged into each other to achieve the positioning of the first steel frame 11 and the second steel member, and then the welding is completed;

[0062] Specifically, the above-mentioned positioning plug-in assembly includes a positioning rod 16. The first steel frame 11 is provided with a positioning rod 16, and the second steel frame 12 is provided with a positioning tube 17 corresponding to the positioning rod 16. The positioning rod 16 and the positioning tube 17 are transitionally matched. The positioning rod 16 corresponds to the positioning tube 17. When the first steel frame 11 corresponds to the second steel frame 12, the positioning rod 16 is inserted into the positioning tube 17 to achieve the positioning effect of the first steel frame 11 and the second steel frame 12.

[0063] Embodiment 2: According to the specification sheet Figure 6 -Attached Fig.13It can be seen that the present application discloses a high-strength rail segment manufacturing device, including a processing frame 4, the processing frame 4 is a rectangular frame, a casting support trough 5 is provided on the processing frame 4, a supporting bottom mold 6 is installed on the casting support trough 5, a cavity matching the concrete body 2 is opened in the supporting bottom mold 6, a closed top cover 51 is hinged on the casting support trough 5, a casting port 52 is provided on the closed top cover 51, and a pulling corresponding hole position 61 is provided on the supporting bottom mold 6 corresponding to the prestressed anchor hole 15;

[0064] In the specific implementation process, the processing frame 4 serves as the supporting base of the equipment, and the processing frame 4 is relied on to support the casting support groove 5, and then a pair of guide rails 43 are arranged at the bottom of the processing frame 4, and the pair of guide rails 43 are matched with the casting support groove 5, and a pair of guide blocks are arranged at the bottom of the casting support groove 5, and the pair of guide blocks are assembled on the pair of guide rails 43, and a pair of linear screw modules are arranged on the pair of guide rails 43, and the pair of linear screw modules are threadedly engaged with the pair of guide blocks, and the pair of linear screw modules are rotated to make the pair of linear screw modules threadedly engaged with the pair of guide blocks, thereby driving the casting support groove 5 to move linearly, and then the casting support groove 5 drives the supporting bottom mold 6 thereon to move;

[0065] In the specific implementation process, the casting support trough 5 is used as a support to drive the supporting bottom mold 6 to move to the casting station. After the casting is completed, the supporting bottom mold 6 is driven to move to the maintenance station for subsequent construction. A closed top cover 51 is provided on the casting support trough 5. The top of the supporting bottom mold 6 can be sealed by the closed top cover 51, which plays a molding role in the casting process. The supporting bottom mold 6 can be removed from the casting support trough 5 during use. Before casting, the supporting bottom mold 6 is used to fix the steel inner frame 1 of the pipe segment, and then welding and casting are performed. During welding, prestressed The anchor hole 15 cooperates with the corresponding hole position 61 for pulling, and then a fixed anchor rod 62 is installed on the corresponding hole position 61 for pulling and is threadedly connected with the prestressed anchor hole 15. The fixed anchor rod 62 is used to penetrate the corresponding hole position 61 for pulling and is fixed to the prestressed anchor hole 15. The fixed anchor rod 62 is used to pull the prestressed anchor hole 15 backward, thereby pulling the first steel frame 11 and the second steel frame 12 backward, and applying prestress to the first steel frame 11 and the second steel frame 12, and then applying prestress to the steel bar inner frame 1, and then the support rod 13 is welded, and after the support rod 13 is completely welded, the pouring construction is carried out;

[0066] According to the instruction manual Figure 6 -Attached Fig.12It can be seen that a pouring frame 41 is provided on the upper part of the processing frame 4, and a pouring bucket 42 is installed on the pouring frame 41. The bottom opening of the pouring bucket 42 corresponds to the pouring port 52. The pouring frame 41 is installed on the processing frame 4 to support and fix the pouring bucket 42. The mixed concrete is added into the pouring bucket 42, and then the pouring bucket 42 is used to weigh the amount of concrete, and then the pipeline at the bottom of the pouring bucket 42 corresponds to the supporting bottom mold 6 to realize the pouring of concrete.

[0067] In order to maintain the uniformity of pouring and ensure that all pouring is in place during the pouring process, a roving vibrating structure 7 is provided on the processing frame 4. Fig.11 -Attached Fig.12 It can be seen that the above-mentioned roving vibration structure 7 performs mechanical vibration on the casting support groove 5;

[0068] According to the instruction manual Figure 6 -Attached Fig.12 It can be known that in order to realize the pulling effect on the first steel frame 11 and the second steel frame 12, the above-mentioned central tube 31 and the pair of pulling tubes 32 are both internal threaded tubes, a first prestressed counter-tension rod 86 is connected and installed in the central tube 31, a pair of second prestressed counter-tension rods 87 are threadedly connected on the pair of pulling tubes 32, and three adjusting sleeves 88 are respectively connected to the ends of the first prestressed counter-tension rod 86 and the pair of second prestressed counter-tension rods 87, the first prestressed counter-tension rod 86 and the pair of second prestressed counter-tension rods 87, the first prestressed counter-tension rod 86 is threadedly connected to the central tube 31, and serves as the prestress application point of the first prestressed counter-tension rod 86. Before pouring, after the pouring support trough 5 is moved to the pouring station, the first prestressed counter-tension rod 86 is limited and reversed by the adjusting sleeve 88, so as to realize the prestressed reverse pulling of the central tube 31, and the pair of second prestressed counter-tension rods 87 perform the same operation on the pair of pulling tubes 32, thereby realizing the prestress application to the first steel frame 11 or the second steel frame 12;

[0069] According to the instruction manual Figure 6 -Attached Fig.10It can be seen that the middle sections of the first prestressed anti-tension rod 86 and the pair of second prestressed anti-tension rods 87 are both provided with adjustment knobs 89, and the first prestressed anti-tension rod 86 and the second prestressed anti-tension rod 87 are both connected to the central tube 31 and the pair of pulling tubes 32 in a threaded connection manner. The first prestressed anti-tension rod 86 and the second prestressed anti-tension rod 87 can be conveniently adjusted by adjusting the adjustment knob 89, and the prestress can be transmitted for reverse pulling by using the connection effect of the thread. The top end of the first prestressed anti-tension rod 86 or the second prestressed anti-tension rod 87 is matched with the adjustment sleeve 88 through the adjustment component 9 to achieve the function of limiting and applying prestress, and the first prestressed anti-tension rod 86 and the second prestressed anti-tension rod 87 can be disassembled after forming. The force counter-tension rod 87 can not only realize the reuse of the counter-tension rod, but also release the prestress, and apply prestress to the steel bar inner frame 1 of the concrete body 2. The first prestressed counter-tension rod 86 and a pair of second prestressed counter-tension rods 87 are connected with three adjustment components 9, and the three adjustment components 9 correspond to three adjustment sleeves 88. The adjustment components 9 cooperate with the adjustment sleeves 88 to specifically realize the limiting counter-tension effect on the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87. The first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87 are both columnar rods, and the adjustment knob 89 is a plate with a polygonal structure. The adjustment knob 89 is integrated with the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87;

[0070] A fixed plate 81 is provided on the casting frame 41, and a prestressed pulling structure 8 is provided on the fixed plate 81 and connected with three adjusting sleeves 88. The prestressed pulling structure 8 can realize synchronous height adjustment of the three adjusting sleeves 88, and plays a positioning role for the adjusting sleeves 88, making it a basic point for prestressed reverse pulling force;

[0071] According to the instruction manual Figure 6 -Attached Figure 8 It can be known that the above-mentioned prestressed pulling structure 8 includes an adjustment hole 82, the fixing plate 81 is provided with the adjustment hole 82, the adjustment hole 82 is equipped with an adjustment pulling wire rod 83, the bottom end of the adjustment pulling wire rod 83 is connected with a pulling plate 84, the pulling plate 84 is connected with three adjustment sleeves 88 respectively by at least two screws, a pair of guide rods 85 are provided on both sides of the adjustment hole 82, a pair of guide rings are provided on the pulling plate 84, and the pair of guide rings are sleeved on the pair of guide rods 85;

[0072] In the specific implementation process, the fixed plate 81 is fixed to the casting frame 41 through a triangular reinforcement frame, and an adjusting pulling wire rod 83 is arranged on the adjusting hole 82. The adjusting pulling wire rod 83 is threadedly connected with the adjusting hole 82 by rotating the adjusting pulling wire rod 83 to move the adjusting pulling wire rod 83, and then the adjusting pulling wire rod 83 drives the pulling plate 84 to move. The pulling plate 84 is fixedly connected with the three adjusting sleeves 88 by screws. After the height adjustment of the pulling plate 84 is completed, the adjusting sleeves 88 are positioned and installed by screws, so that the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87 are both inserted through the corresponding adjusting sleeves 88, and then the adjusting assembly 9 and the adjusting sleeves 88 are used to push back to play the role of applying prestress to the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87.

[0073] According to the instruction manual Fig. 9 -Attached Fig.10 It can be known that the above-mentioned adjustment component 9 includes a thread groove 91, and the first prestressed back-pull rod 86 is provided with a thread groove 91. The thread groove 91 is internally threadedly connected with a back-thrust screw 92, and the back-thrust screw 92 is in corresponding contact with the adjustment sleeve 88 through a limiting ring gasket 93.

[0074] In the specific implementation process, a perforation 53 is opened on the closed top cover 51 corresponding to the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87. Before pouring, the closed cover plate on the casting support groove 5 is closed, and a closed ring 54 is arranged on the inner side of the perforation 53 of the closed cover plate. The closed ring 54 contacts the top opening of the central tube 31 and the pair of pulling tubes 32, serving as an installation channel for the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87. One end of the external thread of the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87 passes through the perforation 53 on the closed cover plate, and the other end of the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87 is located in the adjusting sleeve 88. The reverse thrust screw 92 is inserted into the adjusting sleeve 88 and the first prestressed counter-tension rod 86 or the second prestressed counter-tension rod 8 The inner thread end of 7 is threadedly engaged, so that the limiting ring gasket 93 at the end of the reverse thrust screw 92 reverses the adjusting sleeve 88, and the first prestressed reverse pull rod 86 and the second prestressed reverse pull rod 87 are rotated by a torque wrench with the adjusting sleeve 88 as a fulcrum, and the first prestressed reverse pull rod 86 and the second prestressed reverse pull rod 87 are adjusted to reverse the center tube 31 and a pair of pulling tubes 32 to achieve the adjustment of the reverse prestress. When the adjustment is completed, the outer thread end of the first prestressed reverse pull rod 86 and the outer thread end of the second prestressed reverse pull rod 87 are respectively threadedly connected with nuts 94, so that the nuts 94 fit the closed cover plate. After the casting is completed, the first prestressed reverse pull rod 86 and the second prestressed reverse pull rod 87 are released from the cooperation with the adjusting sleeve 88, and the pre-tensioning of the steel inner frame 1 is maintained through the nut 94 and the closed cover plate.

[0075] According to the instruction manual Fig.11 -Attached Fig.13 It can be known that the above-mentioned roving vibration structure 7 includes a roving track 71, which is installed on the inner side of the casting frame 41, and a roving component is installed on the roving track 71, and a vibrator 72 is installed on the roving component. The vibrator 72 vibrates the side wall of the corresponding casting support trough 5.

[0076] The patrol assembly includes a patrol linear motor 73 , a control slider 74 is mounted on the patrol track 71 , a pair of position switches 75 are arranged at both ends of the patrol track 71 , the control slider 74 is connected to the vibrator 72 , and the sliding end of the patrol linear motor 73 is connected to the control slider 74 .

[0077] In the specific implementation process, the patrol track 71 on the inner side of the casting frame 41 is used as a limiting channel, and then the patrol component on it is used to slide on the patrol component, thereby driving the vibrator 72 to perform a patrol motion on the patrol track 71, and the vibrator is used to vibrate the side wall of the casting support trough 5, so that the casting support trough 5 is in contact with the supporting bottom mold 6, and the vibration acts in the supporting bottom mold 6. During the casting process, the vibrator 72 is used to achieve vibration to ensure the uniformity and stability of the casting.

[0078] The processing flow of the above-mentioned track segment is as follows: first, prepare the steel bars to be welded, including the first steel frame 11, the second steel frame 12 and a plurality of support rods 13, fix the first steel frame 11 and the second steel frame 12 on the supporting bottom mold 6 through the fixing anchor rods 62, realize the prestressed pulling of the first steel frame 11 and the second steel frame 12, and realize the fixation of the first steel frame 11 and the second steel frame 12, and then weld the plurality of support rods 13 between the first steel frame 11 and the second steel frame 12 in a matrix form to form a complete track frame, and weld the prestressed steel bar assembly 3 between the first steel frame 11 and the second steel frame 12. After the welding is completed, assemble the supporting bottom mold 6 on the casting supporting trough 5, and use the track to cast the cast track. The supporting trough 5 is transported to the pouring station, and the prestressed pulling structure 8 on the pouring station cooperates with the prestressed steel bar assembly to pull the center position of the first steel frame 11 and the second steel frame 12, and then the concrete is weighed by the pouring bucket 42 and poured into the supporting bottom mold 6 along the pouring port 52. During the pouring process, the supporting bottom mold 6 is vibrated by the roving vibration structure 7 to ensure the stability of the pouring, and then the pouring supporting trough 5 is moved to drive the poured pipe segment to the curing station. After curing and forming, the track pipe segment is demoulded, and the first prestressed counter-tension rod 86 and the second prestressed counter-tension rod 87 are released after demoulding to complete the prestressing of the pipe segment, thereby improving the structural strength and tensile resistance of the pipe segment.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength rail segment, comprising a steel inner frame (1) and a concrete body (2), wherein the concrete body (2) is wrapped outside the steel inner frame (1), and the concrete body (2) is a concrete slab in the shape of a missing arc ring, characterized in that: A pair of connection components are provided on both sides of the concrete body (2); The steel inner frame (1) comprises a first steel frame (11) and a second steel frame (12), the first steel frame (11) and the second steel frame (12) are both steel plates with fan-shaped structures, the first steel frame (11) and the second steel frame (12) are coaxially arranged in parallel, and a plurality of support rods (13) arranged in a matrix are welded between the first steel frame (11) and the second steel frame (12); The second steel frame (12) is provided with a prestressed steel bar assembly (3) connected to the first steel frame (11), and a plurality of pairs of prestressed anchor holes (15) are provided on both sides of the first steel frame (11) and the second steel frame (12) in a circular direction, and the number of the prestressed steel bar assembly (3) is not less than 2; The prestressed steel bar assembly (3) comprises a central tube (31), the central tube (31) is welded on the center line of the second steel frame (12), the central axis of the central tube (31) coincides with the radial direction of the second steel frame (12), and the central tube (31) is welded to the first steel frame (11), a pair of tension tubes (32) are alternately arranged on both sides of the central tube (31), and the two ends of the pair of tension tubes (32) are respectively welded to the first steel frame (11) and the second steel frame (12), and the central tube (31) and the pair of tension tubes (32) apply prestress to the circumferential direction of the second steel frame (12); A pair of pulling tubes (32) and a central tube (31) are arranged in a circumferential direction of the first steel frame (11) and the second steel frame (12); The central tube (31) and the pair of pulling tubes (32) are both internally threaded tubes. A first prestressed anti-tension rod (86) is connected and installed inside the central tube (31). A pair of second prestressed anti-tension rods (87) are threadedly connected to the pair of pulling tubes (32). The first prestressed anti-tension rod (86) and the pair of second prestressed anti-tension rods (87) are both connected to a manufacturing device for a high-strength track segment, and the prestressed anti-tension effect is provided by the manufacturing device for the high-strength track segment.

2. A high-strength rail segment according to claim 1, characterized in that: The compressive strength of the concrete used in the concrete body (2) is at least 30 MPa, the concrete waterproof grade of the concrete body (2) is not less than the anti-seepage grade of P10, and the tensile strength of the concrete body (2) after being formed is above 5 MPa.

3. A high-strength rail segment according to claim 2, characterized in that: The arc diameter of the second steel frame (12) is smaller than the arc diameter of the first steel frame (11), and the second steel frame (12) and the first steel frame (11) are respectively provided with a plurality of pairs of through grooves (14); the connection assembly comprises a dovetail guide groove (21), one side of the concrete body (2) is provided with a dovetail guide groove (21), the dovetail guide groove (21) runs through both ends of the concrete body (2), the other side of the concrete body (2) is provided with a dovetail guide block (22), the dovetail guide block (22) matches the width of the dovetail guide groove (21), and at least two pairs of embedded connecting rods are provided between the dovetail guide block (22) and the dovetail guide groove (21).

4. A high-strength rail segment according to claim 3, characterized in that: Two pairs of positioning plug-in components are arranged at the four corners of the first steel frame (11) and the second steel frame (12); the first steel frame (11) and the second steel frame (12) are positioned corresponding to each other through the two pairs of positioning plug-in components; the positioning plug-in components include positioning plug rods (16); the first steel frame (11) is provided with positioning plug rods (16); the second steel frame (12) is provided with positioning plug tubes (17) corresponding to the positioning plug rods (16); the positioning plug rods (16) and the positioning plug tubes (17) are transitionally matched.

5. A high-strength rail segment manufacturing device, applied to a high-strength rail segment as claimed in any one of claims 1 to 4, characterized in that: The processing frame (4) comprises a processing frame (4), the processing frame (4) is a frame of a rectangular structure, a casting support trough (5) is arranged on the processing frame (4), a supporting bottom mold (6) is mounted on the casting support trough (5), a cavity matching the concrete body (2) is provided in the supporting bottom mold (6), a closed top cover (51) is hingedly connected to the casting support trough (5), a casting port (52) is arranged on the closed top cover (51), and a pulling corresponding hole position (61) corresponding to the prestressed anchor hole (15) is arranged on the supporting bottom mold (6); A pouring frame (41) is provided on the upper part of the processing frame (4), a pouring measuring bucket (42) is installed on the pouring frame (41), and the bottom opening of the pouring measuring bucket (42) corresponds to the pouring port (52); The processing frame (4) is provided with a roving vibration structure (7), and the roving vibration structure (7) performs mechanical vibration on the inside of the casting support groove (5); A fixing plate (81) is provided on the casting frame (41), and a prestressed tensioning structure (8) is provided on the fixing plate (81); The first prestressed counter-tension rod (86) and the pair of second prestressed counter-tension rods (87) are respectively connected to three adjustment sleeves (88); the middle sections of the first prestressed counter-tension rod (86) and the pair of second prestressed counter-tension rods (87) are both provided with adjustment knobs (89); the first prestressed counter-tension rod (86) and the pair of second prestressed counter-tension rods (87) are connected to three adjustment components (9); the three adjustment components (9) correspond to the three adjustment sleeves (88); The adjustment assembly (9) comprises a thread groove (91), the first prestressed reverse pull rod (86) is provided with a thread groove (91), the thread groove (91) is internally threadedly connected to a reverse thrust screw (92), and the reverse thrust screw (92) is in corresponding contact with the adjustment sleeve (88) via a limiting ring washer (93).

6. The high-strength rail segment manufacturing equipment according to claim 5, characterized in that: A pair of guide rails (43) are provided at the bottom of the processing frame (4), a pair of guide blocks are provided at the bottom of the casting support groove (5), the pair of guide blocks are assembled on the pair of guide rails (43), a pair of linear screw modules are provided on the pair of guide rails (43), and the pair of linear screw modules are threadedly engaged with the pair of guide blocks.

7. The high-strength rail segment manufacturing equipment according to claim 6, characterized in that: The casting support groove (5) is provided with a mounting hole corresponding to the pulling hole position (61), and a fixing anchor rod (62) is installed on the mounting hole. The fixing anchor rod (62) passes through the pulling hole position (61) and is threadedly connected to the prestressed anchor hole (15).

8. The high-strength rail segment manufacturing equipment according to claim 7, characterized in that: The first prestressed anti-tension rod (86) and the second prestressed anti-tension rod (87) are both columnar rods, and the adjustment knob (89) is a plate with a polygonal structure.

9. The high-strength rail segment manufacturing equipment according to claim 8, characterized in that: The closed top cover (51) is provided with perforations (53) corresponding to the first prestressed anti-tension rod (86) and the second prestressed anti-tension rod (87).

10. The high-strength rail segment manufacturing equipment according to claim 9, characterized in that: The roving vibration structure (7) comprises a roving track (71), the roving track (71) being mounted on the inner side of a casting frame (41), the roving track (71) being mounted with a roving assembly, the roving assembly being mounted with a vibrator (72), the vibrator (72) vibrating the side wall of the corresponding casting support trough (5); The patrol assembly comprises a patrol linear motor (73); a control slider (74) is mounted on the patrol track (71); the control slider (74) is connected to the vibrator (72); and a sliding end of the patrol linear motor (73) is connected to the control slider (74).

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