Track slab buckling tool of CRTS III slab ballastless track

Abstract

The utility model provides a track slab buckling and pressing tool for a CRTS III slab ballastless track, which comprises a plurality of pre-embedded sleeves, a pressing lever, a fixed steel plate, a connecting pull rod and a data acquisition unit, and is characterized in that the plurality of pre-embedded sleeves are pre-embedded on a base plate; the pressing bars comprise pressing rods and supporting legs fixed to the two ends of the pressing rods, and the pressing rods are transversely placed on the top face of the track plate. The connecting pull rod comprises an upper pull rod, a lower pull rod and a tension sensor connected between the upper pull rod and the lower pull rod, the lower pull rod is fixedly connected with the pre-embedded sleeve, the upper pull rod extends to the upper part of the pressing rod, and the pressing rod is locked on the track plate by screwing a locking nut on the upper pull rod; and the data collector is connected with the tension sensor. According to the buckling and pressing tool, the tension of the connecting pull rod is monitored in real time through the tension sensor, the bottom of the whole pressing rod makes contact with the track plate and applies pressure, the track plate is stressed more evenly, and the influence of warping amount degradation is reduced; the stress path of the buckling tool is optimized, and the stress condition better conforms to the actual working condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to CRTS III type slab ballastless track construction technical field especially relates to a track slab of CRTS III type slab ballastless track is buckled and pressed frock. BACKGROUND

[0002] At present, the technology of high-speed railway ballastless track in China develops rapidly, has formed the CRTS III type slab ballastless track technology with complete independent intellectual property rights, and is widely used in China. CRTS III type slab ballastless track is a new type of unit slab ballastless track structure with shoulder, mainly by rail, elastic fastener, track slab, self-compacting concrete layer, isolation layer and reinforced concrete base with limiting structure etc. part is composed, and the track slab lower self-compacting concrete layer is filled, is one of the most important construction procedures of ballastless track construction.

[0003] The traditional self-compacting concrete filling adopts the door type buckling frock to lock the track slab and the side mould, is composed of 5 steel buckling devices with pull rod and 4 fine adjustment devices, the pull rod that provides the reaction force in the buckling device only realizes point contact between the limiting reinforcement in the base plate embedded hole, during the self-compacting concrete filling process, due to the floating force of concrete, the device is easy to rotate and the limiting reinforcement is deformed, thereby causing the overall displacement, which will lead to the high ratio of track slab elevation and transverse displacement deviation exceeding the specified standard. The force value that the buckling device applies to the track slab cannot be obtained and adjusted specifically, and through the measurement, it is found that under the condition that the same torque is applied on the buckling device, the method of adjusting the torque to reflect the pull rod tension value is not accurate, under the condition of the same torque, the pull rod tension value exists difference, which leads to the buckling device cannot provide consistent constraint force for the track slab, and further causes the warping phenomenon of the track slab.

[0004] At present, there is still a lack of quick and efficient control means for precision control of track slab laying and self-compacting concrete pouring links, and the track slab retest results of multiple lines also show that the precision has a large room for improvement, so it is necessary to further promote the research and improvement of tooling and process, improve the construction precision, and help the high-quality construction of CRTS III type slab-type ballastless track. For example, the informationized buckling tooling adopts four integrated buckling devices and four fine adjustment devices, through the connection of the anchor bolts and the pre-buried sleeves in the base plate, the door-shaped buckling device and the base plate form a self-balancing “counterforce frame”, the elevation and displacement of the track slab are constrained, two pressure sensors below the pressure lever apply pressure to the track slab and monitor the stress condition of the track slab, and the CRTS III type slab-type ballastless track buckling tooling disclosed in the patent CN118461378A is the informationized buckling tooling. However, the buckling tooling has the following problems: the two-point stress mode (two pressure sensors supporting the track slab at a single point) is adopted at the lower part of the pressure lever, which cannot guarantee the uniform distribution of the pressure on the track slab, the stress path is sleeve uplift force→pressure lever leg tension→pressure lever beam pressure (two-point stress of pressure sensor), the data finally collected by the pressure sensor is the pressure of the pressure lever beam, the stress path is complex, and the dispersion and loss of force are increased. SUMMARY

[0005] In view of the above problems in the prior art, the utility model provides a track slab buckling tooling for CRTS III type slab-type ballastless track, the pressure lever is placed on the track slab, the pre-buried sleeve is pre-buried on the base plate, the track slab is buckled on the base plate through the connecting pull rod connected between the pre-buried sleeve and the pressure lever, and the tension of the connecting pull rod is monitored in real time through the tension sensor connected on the connecting pull rod, the bottom of the whole pressure lever is in contact with the track slab and applies pressure, so that the stress of the track slab is more uniform, and the warping amount degradation is reduced; the stress path of the buckling tooling is optimized, and the stress condition is more in line with the actual working condition.

[0006] The technical scheme adopted by the utility model to achieve the above-mentioned purposes is as follows:

[0007] A track slab buckling tooling for CRTS III type slab-type ballastless track, the track slab buckling tooling buckles and fixes the track slab and the side form plate on the base plate, the track slab is located above the base plate, and the side form plate is located above the base plate and on both sides of the track slab, and the track slab buckling tooling comprises:

[0008] A pre-buried sleeve is symmetrically pre-buried on the base plate on the outer sides of the side form plate;

[0009] The press lever is provided with a plurality of press levers in a door shape, including a press lever and a supporting leg fixed to both ends of the press lever, and a reserved mounting hole is arranged on the press lever near both ends; the press levers of the plurality of press levers are arranged on the top surface of the track plate in the transverse direction and the supporting legs of the press levers are arranged on both sides of the base plate, and the reserved mounting holes on the press levers are arranged above the embedded sleeves respectively;

[0010] The fixed steel plate is fixed to the inner side of the supporting leg of the press lever, and the fixed steel plate is connected with a clamping member; the clamping member clamps the side formwork on the track plate from the side;

[0011] The connecting pull rod is connected with the embedded sleeve, and the connecting pull rod includes an upper pull rod, a lower pull rod and a tension sensor connected between the upper pull rod and the lower pull rod in the vertical direction; the lower end of the lower pull rod is connected with the embedded sleeve, the upper end of the upper pull rod extends from the reserved mounting hole of the press lever to the upper side of the press lever, the upper end of the upper pull rod is sleeved with a gasket and a locking nut, the press lever is locked on the track plate by tightening the locking nut, and the pressure of the press lever on the track plate is adjusted by adjusting the tightness of the locking nut;

[0012] The data collector is connected with the tension sensor and collects and displays the tension data in real time.

[0013] Five press levers are arranged above each track plate, ten embedded sleeves are arranged correspondingly, and ten fixed steel plates are arranged correspondingly.

[0014] The fixed steel plate is arranged with an opening on both sides, and a clamping nut is fixed to the opening; the clamping member is a screw rod, the screw rod passes through the opening and is connected to the clamping nut, and the screw rod is clamped on the side formwork.

[0015] The fixed steel plate is made of a 170mm*180mm steel plate, the size of the clamping nut is 16mm, and the diameter of the screw rod is 16mm.

[0016] The screw rod is sleeved with a clamping plate near the side formwork, and the cross section of the clamping plate is larger than that of the screw rod.

[0017] The data collector is provided with a data transmission system, and the collected data is uploaded to the server in real time.

[0018] The press lever is made of a square tube with a cross section of 130mm*60mm; and the supporting leg of the press lever is made of a square tube with a cross section of 65mm*50mm.

[0019] The press lever is made of an aluminum alloy material.

[0020] The upper pull rod, the tension sensor, the lower pull rod and the embedded sleeve are fixed by thread connection.

[0021] The both ends of the pressing lever are provided with anti-side shift mechanisms, the anti-side shift mechanism comprises a fixed rod and an inclined support rod, one end of the fixed rod is fixed on the pressing lever of the pressing lever, the other end of the fixed rod is fixed on the side of the base plate, one end of the inclined support rod is fixed on the pressing lever of the pressing lever, and the other end of the inclined support rod is tightly pressed on the side of the base plate.

[0022] Compared with the prior art, the track plate buckling and pressing tool of the CRTS III type slab ballastless track has the following advantages: 1, the track plate buckling and pressing tool of the utility model is placed on the track plate, the embedded sleeve is embedded on the base plate, the track plate is buckled and pressed on the base plate through the connecting pull rod connected between the embedded sleeve and the pressing lever, and the tension of the connecting pull rod (that is, the pull-out resistance of the embedded sleeve) is monitored in real time through the tension sensor connected on the connecting pull rod, the bottom of the whole pressing lever is in contact with the track plate and applies pressure, so that the track plate is more uniformly stressed, and the warping amount is reduced to reduce the influence of degradation; in the application, the stress path is directly the pull-out resistance of the sleeve (that is, the tension monitored by the tension sensor), the stress path of the buckling and pressing tool is optimized, the stress path is greatly simplified, and the stress condition reflected by the tension sensor is more in line with the actual working condition.

[0023] 2, the fixed steel plate and the supporting leg of the pressing lever are fixedly connected in the utility model, and the side formwork is tightly abutted on the side of the track plate through the clamping member connected on the fixed steel plate from the side to limit the side shift of the track plate; the side shift of the track plate is further limited through the anti-side shift module in the application.

[0024] 3, the pressing lever is made of high-strength and light-weight aluminum alloy in the utility model, so that the weight of the pressing lever is greatly reduced, and the labor intensity of the operating personnel is reduced.

[0025] 4, the tension sensor is connected with the data collector in the utility model, the data collector is provided with a data transmission system, collected data is uploaded to the server in real time, and the server displays and stores the tension data in real time. DETAILED DESCRIPTION

[0026] Figure 1 The structure schematic view of the track plate buckling and pressing tool of the CRTS III type slab ballastless track for example 1 is provided;

[0027] Figure 2 The installation top view of the track plate buckling and pressing tool for example 1 is provided;

[0028] Figure 3 The installation side view of the track plate buckling and pressing tool for example 1 is provided;

[0029] Figure 4 The installation horizontal sectional view of the track plate buckling and pressing tool for example 1 is provided;

[0030] Figure 5This is a schematic diagram of the installation of the track plate clamping fixture provided in Example 2;

[0031] In the diagram: 1-base plate, 2-track plate, 3-side template, 4-self-compacting concrete layer, 5-pressure bar, 501-pressure rod, 502-support leg, 503-reserved mounting hole, 6-fixed steel plate, 7-embedded sleeve, 8-connecting tie rod, 801-upper tie rod, 802-lower tie rod, 803-tension sensor, 9-data acquisition unit, 10-locking nut, 11-tightening component, 12-fixing rod, 13-diagonal brace. Detailed Implementation

[0032] The present invention will now be described in detail with reference to specific embodiments and accompanying drawings.

[0033] Example 1

[0034] During the construction of CRTS III type slab track, the track slab 2 and side template 3 are fastened and fixed to the base plate 1 using track slab clamping fixtures. The track slab is located above the base plate, and the side templates are located above the base plate and on both sides of the track slab. Figure 2 and Figure 3 As shown. After the track slab is clamped, self-compacting concrete is poured to form a self-compacting concrete layer 4 between the base plate and the track slab, as shown. Figure 4 As shown, Figure 4 The edge template is not drawn in the middle.

[0035] The structure of the track slab clamping fixture for the CRTS III type slab track provided in this embodiment is as follows: Figure 1 As shown, the system includes a pre-embedded sleeve 7, a pressure bar 5, a fixing steel plate 6, a connecting rod 8, and a data acquisition device 9. In this embodiment, each track plate is equipped with five pressure bars, ten pre-embedded sleeves, ten fixing steel plates, and ten connecting rods.

[0036] Ten pre-embedded sleeves are symmetrically distributed on both sides of the side template on the base plate, that is, five pre-embedded sleeves are set on each side of the base plate, and the pre-embedded sleeves on both sides correspond one-to-one in the horizontal direction.

[0037] In this embodiment, the pressure bars are U-shaped, including pressure rods 501 and support legs 502 fixed to both ends of the pressure rods. Each pressure rod has a pre-drilled mounting hole 503 extending vertically near both ends. All five pressure rods are placed horizontally on the top surface of the track plate, with the support legs of the pressure rods located on both sides of the base plate. Figures 2-4, and the reserved mounting holes on the pressing rod are located directly above the embedded sleeves. Specifically, the pressing rod is made of aluminum alloy material, preferably aluminum-magnesium alloy. Specifically, the pressing rod adopts a square tube with a cross section of 130mm*60mm, and the length is 305cm; the leg of the pressing rod adopts a square tube with a cross section of 65mm*50mm, and the length is 27.5cm; the leg of the pressing rod is fixed to the pressing rod at a distance of 11.5cm from both ends.

[0038] In this embodiment, the legs of the pressing rod are fixed to the edge formwork by fixing steel plates; specifically, ten fixing steel plates are fixedly connected to the inner sides of the ten legs by bolts, and the fixing steel plates are connected with the tightening members 11, which tightly abut the edge formwork on the track plate from the side; specifically, the fixing steel plates are provided with openings on both sides, and the openings are fixed with tightening nuts, and the tightening members are screw rods, which are connected to the tightening nuts in the openings and tightly abut on the edge formwork. Further, the ends of the screw rods close to the edge formwork are each sleeved with a tightening plate, and the cross section of the tightening plate is larger than that of the screw rod. Further, the fixing steel plate adopts a 170mm*180mm steel plate, and three 16mm holes with a spacing of 70mm are opened on both sides of the fixing steel plate close to the edge position, and a 16mm tightening nut is welded, and a 16mm screw rod is screwed in.

[0039] In this embodiment, ten connecting pull rods are provided, which include an upper pull rod 801, a lower pull rod 802, and a tension sensor 803 connected vertically between the upper pull rod and the lower pull rod. The lower end of the lower pull rod is connected and fixed with the embedded sleeve, and the upper end of the upper pull rod extends out of the reserved mounting hole of the pressing rod to above the pressing rod. The upper end of the upper pull rod is sleeved with a gasket and a locking nut 10, which tightly locks the pressing rod on the track plate, and adjusts the pressure of the pressing rod on the track plate by adjusting the tightness of the locking nut. Specifically, the upper pull rod, the tension sensor, the lower pull rod and the embedded sleeve are fixed by screw thread connection, that is, they are connected by matching inner and outer threads. Preferably, the diameters of the upper pull rod and the lower pull rod are 18mm, the length of the upper pull rod is 28cm, and the length of the lower pull rod is 15cm. Further, the tension sensor adopts a cylindrical 10-ton tension sensor, with a diameter of 48mm, a length of 164mm, and a thread depth of 38mm.

[0040] The data acquisition device is connected with the tension sensor through a signal line, and the data acquisition device acquires and displays the tension data in real time. The data of the tension sensor is displayed on the display screen of the data acquisition device in real time, thereby guiding the operator to adjust the tension. Specifically, the data acquisition device is provided with a data transmission system, which uploads the collected data to the server in real time, and the server displays and stores the tension data in real time. Further, the data acquisition device is composed of a processor, a display screen, a lithium battery and a data transmission system.

[0041] The construction steps of the track slab buckling tool for the CRTS III type slab track provided in the embodiment are as follows:

[0042] Step 1, when the base plate is constructed, the embedded sleeve is embedded at the required position;

[0043] Step 2, the track slab is placed above the base plate, and the side formwork is placed against the edge of the track slab;

[0044] Step 3, the pressing bars of the track slab buckling tool are placed on the top surface of the track slab and correspond to the positions of the embedded sleeves, and five pressing bars are needed for each track slab;

[0045] Step 4, the fixing steel plate of the tool is connected with the supporting legs of the pressing bars through bolts, and the side formwork is fixed through the corresponding bolts on the fixing steel plate;

[0046] Step 5, the lower pull rod connected with the connecting pull rod is connected with the embedded sleeve, the upper pull rod is pulled out from the reserved mounting hole of the pressing bar, and the tension sensor is connected between the upper pull rod and the lower pull rod;

[0047] Step 6, the tension sensor is connected with the data collector through the signal line, and the data of the tension sensor is displayed on the display screen of the data collector in real time, so as to guide the operator to adjust the tension; the data collector is provided with a data transmission system, and the collected data is uploaded to the server in real time, and the server displays and stores the tension data in real time;

[0048] Step 7, the gasket is placed at the upper position of the upper pull rod, and the locking nut is screwed, and the pressure of the buckling tool on the track slab is adjusted by adjusting the tightness of the locking nut.

[0049] The track slab buckling tool for the CRTS III type slab track provided in the embodiment is used for the self-compacting concrete pouring test of the slab track, the maximum deviation of the displacement and elevation of the track slab is 0.8mm, which is much smaller than the requirement of 2mm in the specification.

[0050] Embodiment 2

[0051] The track slab buckling tool for the CRTS III type slab track provided in the embodiment is basically the same as that in Embodiment 1, and the difference is that the two ends of the pressing bar are provided with a side shift prevention mechanism in the embodiment, as shown in Figure 5 The side shift prevention mechanism includes a fixed rod 12 and an inclined support rod 13, one end of the fixed rod is fixed to the pressing rod of the pressing bar, and the other end of the fixed rod is fixed to the side surface of the base plate; one end of the inclined support rod is fixed to the pressing rod of the pressing bar, and the other end of the inclined support rod is tightly pressed against the side surface of the base plate. The side shift and floating of the track slab are further prevented by the fixed rod and the inclined support rod.

Claims

1. A track slab buckling tool for CRTS III slab track, the track slab buckling tool buckles and fixes the track slab and the side form board on the base plate, the track slab is above the base plate, the side form board is above the base plate and is on both sides of the track slab, characterized in that: The track plate clamping fixture includes: ​ Embedded sleeves are symmetrically distributed on both sides of the side template on the base plate; The pressure bar is provided in multiple forms, and the pressure bar is in the shape of a door. It includes a pressure rod and support legs fixed at both ends of the pressure rod. The pressure rod is provided with a reserved mounting hole that runs vertically through both ends. The pressure rods of the multiple pressure bars are placed horizontally on the top surface of the track plate and the support legs of the pressure bar are located on both sides of the base plate. The reserved mounting holes on the pressure rod are located directly above the pre-embedded sleeve. The number of fixed steel plates is consistent with the number of support legs of the pressure bar. The fixed steel plates are fixed to the inside of the support legs of the pressure bar. The fixed steel plates are connected to the clamping parts, which press the side template tightly against the track plate from the side. The number of connecting rods is consistent with the number of pre-embedded sleeves. The connecting rods include an upper rod, a lower rod, and a tension sensor connected vertically between the upper rod and the lower rod. The lower end of the lower rod is connected and fixed to the pre-embedded sleeve. The upper end of the upper rod extends from the reserved mounting hole of the pressure rod to the top of the pressure rod. The upper end of the upper rod is fitted with a washer and a locking nut. The pressure rod is locked to the track plate by tightening the locking nut. At the same time, the pressure of the pressure rod on the track plate is adjusted by adjusting the tightness of the locking nut. The data acquisition unit connects to the tension sensor and collects and displays tension data in real time.

2. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: Five pressure bars are installed above each track slab, ten pre-embedded sleeves are installed accordingly, ten fixed steel plates are installed accordingly, and ten connecting rods are installed accordingly.

3. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: The fixed steel plate has openings on both sides, and a tightening nut is fixed at each opening. The tightening component is a screw rod, which passes through the opening and is connected to the tightening nut, and is tightened against the side template.

4. The track plate buckling tool for CRTS III type slab track according to claim 3, characterized in that: The fixing steel plate is made of 170mm*180mm steel plate, the tightening nut is 16mm in size, and the screw has a diameter of 16mm.

5. The track plate buckling tool for CRTS III type slab track according to claim 3, characterized in that: Each end of the screw near the edge template is fitted with a tightening plate, the cross-section of which is larger than that of the screw.

6. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: The data collector has a built-in data transmission system that uploads the collected data to the server in real time.

7. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: The pressure bar's pressure rod is made of a square tube with a cross-section of 130mm*60mm; the pressure bar's support legs are made of square tubes with a cross-section of 65mm*50mm.

8. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: The pressure bar is made of aluminum alloy.

9. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: The upper pull rod, tension sensor, lower pull rod, and embedded sleeve are fixed together by threaded connection.

10. The track plate buckling tool for CRTS III type slab track according to claim 1, characterized in that: The pressure bar is equipped with anti-lateral displacement mechanisms at both ends. The anti-lateral displacement mechanisms include a fixed rod and a diagonal brace. One end of the fixed rod is fixed to the pressure bar of the pressure bar, and the other end of the fixed rod is fixed to the side of the base plate. One end of the diagonal brace is fixed to the pressure bar of the pressure bar, and the other end of the diagonal brace is pressed against the side of the base plate.

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