Intelligent construction method for ballastless track

Abstract

The invention belongs to the technical field of track planking construction, and discloses a ballastless track intelligent construction method which comprises the following steps: S1, building a ballastless track intelligent construction system, the intelligent ballastless track construction system comprises a planking pouring construction crane, four track board laying fine adjustment devices, a concrete pouring stock bin and a concrete curing folding shed, track boards are hoisted and put down, and the four track board laying fine adjustment devices are installed; s2, a prism is built on the lowered track plate, a total station is built in front of the prism, and the position of the track plate is adjusted through a track plate laying fine adjustment device until the design requirement is met; s3, the concrete pouring stock bin is hoisted for concrete pouring and filling; and S4, the concrete curing folding shed is moved and unfolded to conduct constant-temperature and constant-humidity curing on the poured concrete. The concrete curing method has the advantages of being easy and rapid to operate, stable in hoisting, high in fine adjustment precision, novel in concept, capable of conducting constant-temperature and constant-humidity curing on the concrete and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of track slab construction, and particularly relates to an intelligent construction method for ballastless tracks. Background Art

[0002] Currently, the following problems exist in track slab construction: (1) Currently, a measuring device for measuring and feedback position is equipped on the gripper assembly of the conventional track slab lifting tool. Therefore, when the lifting tool lowers the track slab, during the adjustment process of the track slab laying position, the position of the gripper assembly can be adjusted according to the information feedback by the measuring device, so as to achieve fine adjustment of the track slab. However, due to the linkage of the left and right grippers, when adjusting longitudinally, the left and right sides can only be adjusted synchronously, so that the four corners of the track slab cannot be accurately adjusted individually, resulting in limited adjustment accuracy and low precision; (2) For the concrete gap between the track slab and the track base slab, formwork is first erected, and then concrete is poured into the gap between the track slab and the track base slab respectively by two symmetrical conical hoppers on the left and right. Therefore, there is uneven concrete pouring on the left and right, and it is easy to occur that one side is over-poured and overflows, while the other side is not fully poured and has cavities, thus affecting the track construction quality. Moreover, when using conical hoppers, there is a situation where concrete oscillates and overflows, resulting in concrete waste, and the spilled concrete will also affect subsequent construction. Erecting formwork and subsequent formwork removal are also time-consuming and laborious; (3) For the curing of the poured concrete of the ballastless track, it is cured by manually sprinkling water as evenly as possible and then directly covering it with a film. The operation is cumbersome, requires multiple people to cooperate, increases labor costs, and cannot achieve a constant temperature and humidity effect. The concrete curing conditions are poor, the curing effect is not good, affecting the concrete quality, and leaving potential safety hazards. Summary of the Invention

[0003] The invention aims to provide an intelligent construction method for ballastless tracks, with high track slab laying accuracy, balanced concrete pouring, and good concrete curing effect, solving the problems that the left and right grippers of the current track slab lifting tool cannot accurately adjust the four corners of the track slab individually, and that the concrete pouring requires erecting and removing formwork, which is time-consuming and laborious, the concrete pouring is uneven on the left and right, and that for the curing of the poured concrete of the ballastless track, it is cured by manually sprinkling water as evenly as possible and then directly covering it with a film, resulting in cumbersome operation, increased labor costs, and poor curing effect.

[0004] Therefore, the technical solution adopted by the invention is as follows: An intelligent construction method for ballastless tracks, comprising the following steps:

[0005] Step S1: Build an intelligent ballastless track construction system. The intelligent ballastless track construction system includes a slab laying and pouring construction crane, four track slab laying and fine-tuning devices, a concrete pouring hopper, and a concrete curing folding shed. The track slab is lifted by the slab laying and pouring construction crane and moved along the track base plate to the laying area for lowering. Before lowering, the four track slab laying and fine-tuning devices are installed at corresponding positions near the corners on the left and right sides of the track slab.

[0006] Step S2: Set up prisms on the sleepers near the four corners of the lowered track slab, and set up a total station in the front. Under the cooperation of the total station and the prisms, adjust the position of the track slab through the track slab laying and fine-tuning devices until the design requirements are met.

[0007] Step S3: First, place gunny bags symmetrically on the left and right between the track slab and the track base plate. Use the slab laying and pouring construction crane to lift the concrete pouring hopper to simultaneously pour and fill the two gunny bags between the laid track slab and the track base plate.

[0008] Step S4: Move the concrete curing folding shed and unfold it to carry out constant temperature and humidity curing on the poured concrete. Repeat the above steps until the construction of the entire ballastless track is completed.

[0009] As an optimization of the above solution, in step S1, by adjusting the track slab laying and fine-tuning devices, there is a 10 cm gap between the lowered track slab and the track base plate.

[0010] Further preferably, the slab laying and pouring construction crane includes a mobile gantry, a pulling mechanism located above the mobile gantry, and a lifting and clamping mechanism connected corresponding to the upper and lower parts of the pulling mechanism. The pulling mechanism includes a pulling main frame installed on the corresponding upper part of the mobile gantry, pulling hydraulic cylinders installed symmetrically side by side on the pulling main frame, steel cable limiting winding columns symmetrically arranged on the left and right, and four steel cables pulling the four corners of the lifting and clamping mechanism. One end of each steel cable is wound around the telescopic end of the pulling hydraulic cylinder, and the other end passes around the corresponding steel cable limiting winding column and then vertically downward to be connected to the corresponding lifting lugs at the four corners of the lifting and clamping mechanism. When the pulling hydraulic cylinder expands and contracts, the lifting and clamping mechanism is horizontally lifted and lowered synchronously by the four steel cables.

[0011] Compared with the current conventional lifting tools that require manual hooks for each lifting hole one by one, when the clamping hydraulic cylinders at both ends of the lifting and clamping mechanism expand and contract outward synchronously; compared with the current lifting tools that cannot ensure the same lifting length during lifting, in this solution, when the pulling hydraulic cylinder of the pulling mechanism expands and contracts, the lifting and clamping mechanism is horizontally lifted and lowered synchronously by the four steel cables, ensuring that the lifting is not easily shaken horizontally and the structure is interlocked.

[0012] The lifting and clamping mechanism includes a main lifting frame, a clamping hydraulic cylinder longitudinally extending horizontally in the middle, clamping connecting longitudinal rods symmetrically arranged on the left and right, and clamping seats that are mirror-symmetrical left and right and connected to the corresponding side clamping connecting longitudinal rods. A "V"-shaped oil cylinder connecting frame is hinged to both ends of the clamping hydraulic cylinder between the two clamping connecting longitudinal rods. When the two ends of the clamping hydraulic cylinder synchronously extend or retract outwards, the angle of the "V"-shaped oil cylinder connecting frame becomes larger or smaller, driving the two clamping connecting longitudinal rods to approach or move away from each other, so that the clamping seats synchronously loosen outwards or clamp inwards, automatically controlling the clamping and loosening, with simple and fast operation and firm clamping.

[0013] Further preferably, the movable gantry includes telescopic columns at the four corners, a pulling support frame lapped on the upper parts of the telescopic columns at the four corners, and a roller assembly installed at the bottom of the telescopic columns. The roller assembly includes a roller box, a moving roller located inside the roller box, a driving motor that provides driving force for the moving roller, and a guiding and limiting wheel located outside the roller box and sliding along the side wall of the track base plate. The roller is automatically moved by the driving motor, with simple operation, and the lateral limit of the entire crane is realized through the guiding and limiting wheel, effectively avoiding deviation during the movement of the crane.

[0014] A cable storage coil is installed on the front side of the pulling support frame, and a hydraulic station is installed on the rear side; the telescopic column is composed of two square columns sleeved inside and outside, and the upper square column is equipped with a telescopic hydraulic cylinder, so as to realize the overall lifting of the pulling support frame and cross over and avoid obstacles; two telescopic columns on the same left or right side are provided with chute brackets, and the main lifting frame is correspondingly installed with a telescopic offset adjusting part for the chute brackets. A limiting roller that can slide along the inner chute of the chute bracket is installed at the outer end of the telescopic offset adjusting part. Through the guiding and offset compensation of the telescopic offset adjusting part, the initial paving accuracy of the paving board is improved, and the situation that the suspended object shakes driven by the shaking of the steel cable during lifting is effectively avoided, with a clever structural design.

[0015] The telescopic offset adjusting part includes a connecting part, an anti-shaking hydraulic cylinder, and a foldable protective cover. The connecting part is installed on the main lifting frame and extends horizontally outwards. The piston end of the anti-shaking hydraulic cylinder is installed at one end of the foldable protective cover through a pin shaft, and the cylinder end is installed at the other end of the foldable protective cover through a pin shaft. The inner end of the foldable protective cover is fixed on the connecting part, flexibly adjusting the lifting of the lifting and clamping mechanism without deviation, with a reasonable structural design.

[0016] Further preferably, the clamping seat includes a horizontal connecting rod that is spaced front and back and connected to the clamping connecting longitudinal rod, and a lifting frame connected to the outer end of the horizontal connecting rod. The main lifting frame is provided with a through hole and a sleeve for the horizontal connecting rod to pass through. The lifting frame is integrally in an "L" shape and is used to lift the left and right sides of the pouring hopper or the left and right sides of the track slab, with a reasonable structural design and effectively ensuring the horizontal lifting of the suspended object.

[0017] Further preferably, the steel cable limiting and winding column includes a steel cable vertical adjusting disc located at the corner, a steel cable longitudinal adjusting disc corresponding to the telescopic end of the pulling hydraulic cylinder at the rear, and a steel cable diverging disc located in the middle. One ends of the two steel cables are fixed to the telescopic end of the pulling hydraulic cylinder, and the other ends sequentially pass around the steel cable longitudinal adjusting disc and the steel cable diverging disc and then are introduced into the steel cable vertical adjusting disc at the corresponding corner. Both the steel cable longitudinal adjusting disc and the steel cable diverging disc adopt two layers of wire reels to respectively arrange the two steel cables. The structural design is reasonable, ensuring the synchronous pulling of the four steel cables, and thus ensuring the horizontal lifting and lowering of the lifting and clamping mechanism.

[0018] Further preferably, the fine adjustment device for laying the track slab includes a longitudinal adjustment component, a transverse adjustment component, and a vertical adjustment component arranged in sequence from bottom to top; the longitudinal adjustment component includes a longitudinal slide base, a longitudinal slider sliding along the longitudinal slide base, and a longitudinal driving member for pushing the longitudinal slider to slide. The transverse adjustment component includes a transverse slide base installed on the longitudinal slider, a transverse slider sliding along the transverse slide base, and a transverse driving member for pushing the transverse slider to slide. The vertical adjustment component includes a vertical slide base installed on the transverse slider, a vertical slider vertically sliding along the vertical slide base, and a vertical driving member for driving the vertical slider to lift and lower. An installation plate threadedly connected to the track slab is provided on one side of the vertical slider close to the track slab, so that it can be correspondingly installed at the four corners of the track slab.

[0019] An installation plate threadedly connected to the track slab is provided on one side of the vertical slider of the vertical adjustment component close to the track slab. Since there is a 10 cm concrete filling gap between the track slab and the track base slab, the connection between the track slab and the vertical slider can effectively ensure that the track slab does not directly contact the track base slab, and the installation positions between the adjustment components do not conflict with each other, and the layout is reasonable.

[0020] Further preferably, the longitudinal driving member, the transverse driving member, and the vertical driving member all adopt a screw motor reducer, and the selection is reasonable; a serrated anti-slip structure is provided on the bottom surface of the longitudinal slide base, and bolt mounting seats for connecting to the track base slab are provided at the front and rear ends near the bottom edge. An installation opening for the screw rod of the longitudinal driving member to pass through longitudinally is provided in the middle of the longitudinal slide base, and the bottom of the longitudinal slide is installed on the screw nut of the longitudinal driving member to prevent floating. The structural design is reasonable, thus effectively avoiding the situation that the device is pushed in the reverse direction during fine adjustment, which affects the adjustment accuracy.

[0021] The longitudinal slide is provided with a positioning groove that fits the transverse slide base, ensuring the installation accuracy of the transverse slide and improving the overall fine adjustment accuracy. The transverse slide base is arranged symmetrically in the front and rear mirror images, and a space for the screw rod of the transverse driving member to pass through is left in the middle. The bottom of the transverse slider is installed on the screw nut of the transverse driving member. The structural design is reasonable, effectively avoiding the conflict of the installation positions of the components.

[0022] The longitudinal slider and the transverse slider are both provided with dovetail groove structures at the bottom, and are correspondingly and fittingly connected to the longitudinal slide base and the transverse slide base, so as to ensure the accuracy and stability of the longitudinal and transverse fine adjustments.

[0023] The vertical slide base is provided with an installation cavity for the lead screw of the vertical driving member to pass through vertically, and the vertical slider is installed on the lead screw nut of the vertical driving member, with a reasonable structure.

[0024] Further preferably, the concrete curing folding shed includes a foldable shed frame, a constant temperature and humidity curing mechanism installed on the foldable shed frame, and a tarpaulin erected on the foldable shed frame. The foldable shed frame includes a plurality of groups of driven traveling gantry frames arranged side by side front and back, "X"-shaped connecting rods connecting adjacent driven traveling gantry frames, and a traction active traveling gantry frame driving the driven traveling gantry frames. The constant temperature and humidity curing mechanism includes a temperature and humidity sensor, a cooling and moisturizing pipeline, a heating and moisturizing pipeline, a water tank, and an electric heating steam generator. The temperature and humidity sensors are arranged at multiple points inside the folding shed frame. The traction active traveling gantry frame includes a gantry body, roller mounting seats symmetrically located at the bottom end of the gantry body, driving wheels installed in the roller mounting seats, a driving motor for driving the driving wheels to move, auxiliary wheels installed at the front and rear ends of the roller mounting seats, and guide wheels installed at the bottom of the roller mounting seats and rolling along the side wall of the track base plate. The bottom of the driven traveling gantry frame of adjacent traction active traveling gantry frames is fixed on the roller mounting seat, and the bottoms of the other driven traveling gantry frames except adjacent traction active traveling gantry frames are all provided with driven traveling rollers. When the traction active traveling gantry frame moves along the track base plate, it drives a plurality of driven traveling gantry frames to move away from or close to each other, so as to realize the unfolding and folding of the foldable shed frame.

[0025] The constant temperature and humidity curing mechanism is used to realize the temperature and humidity control of concrete curing. The temperature of the water tank is adjusted according to the data transmitted by the temperature and humidity sensor, and the cooling and moisturizing pipeline or the heating and moisturizing pipeline is selected for spraying water. The temperature and humidity conditions inside the curing shed are monitored in real time, and whether heating or watering is needed is judged according to the measured temperature data, so as to ensure that the temperature and humidity inside the tarpaulin always remain within the established curing standard range, and the water spraying amount is flexibly adjusted, so as to realize the constant temperature and humidity curing of concrete, with good curing effect and reduced labor and material costs.

[0026] The driving motor of the traction active traveling gantry frame provides the traveling power. When the traction active traveling gantry frame moves along the track base plate, it can drive a plurality of driven traveling gantry frames to move away from or close to each other, so as to realize the unfolding and folding of the foldable shed frame. After unfolding, the ballastless track is cured. During the curing process, the distance between the support frames can be adjusted according to the needs of different working spaces, so that the whole device can adapt to various sizes of working environments. The driven traveling gantry frames are connected by "X"-shaped connecting rods, and the distance between adjacent traveling gantry frames is adjusted by changing the angle of the "X"-shaped connecting rods, and the structure is interlocked.

[0027] Further preferably, the temperature-raising and humidity-keeping pipeline is composed of two pipes symmetrically arranged on the left and right and respectively communicated with the outlet end of the electric heating steam generator. The temperature-raising and humidity-keeping pipeline is provided with temperature-raising nozzles fixed on the driven traveling gantry at intervals. The temperature-lowering and humidity-keeping pipeline is longitudinally installed in the middle of the top of the driven traveling gantry and is provided with temperature-lowering nozzles at intervals. The water outlet pipe of the water tank is respectively connected to the temperature-lowering and humidity-keeping pipeline and the electric heating steam generator. The steam is evenly sprayed from the left and right of the temperature-raising and humidity-keeping pipeline for rapid temperature-raising and humidity-keeping, and the water is sprayed from the middle temperature-lowering and humidity-keeping pipeline for rapid temperature-lowering and humidity-keeping.

[0028] The water tank is internally provided with a water level sensor, an electric heating rod, and a temperature sensor. The left and right sides of the rear side wall of the water tank are symmetrically provided with cleaning ports, and the middle right part of the rear side wall of the water tank is provided with a liquid level display window. The structural design is reasonable, which is convenient for flexibly adjusting the temperature in the water tank according to requirements.

[0029] Both the water tank and the electric heating steam generator are installed on the gantry main body, making rational use of space and avoiding interference caused by wire harness interlacing.

[0030] The outlet end of the electric heating steam generator is sequentially equipped with a solenoid valve 1, a pressure reducing valve, a filter, a high-pressure pump, and a solenoid valve 2 along the steam conveying direction. The equipment layout is reasonable, which is convenient for adjusting the water spraying amount.

[0031] The tarpaulin is made of heat-insulating plastic material, and the material selection is reasonable.

[0032] Further preferably, the pouring hopper includes a hopper body and lifting support plates located on the left and right sides of the hopper body. The bottom of the hopper body is provided with a sub-distribution slope in an inverted "V" shape and a plane symmetrically connecting the left and right sub-distribution slopes. The plane is provided with a discharge pipe, and a flow sensor is arranged in the discharge pipe. The sub-distribution slope is adopted to ensure that the concrete flow rates on the left and right are roughly the same, thereby ensuring the pouring quality and avoiding the situation of concrete overflow on one side and concrete cavity on the other side.

[0033] The top edge of the hopper body is provided with a baffle extending horizontally inward to prevent the concrete from spilling out; the lifting support plates are provided with reinforcing rib plates at intervals in the front and rear, and the structure is reasonable.

[0034] The beneficial effects of the present invention:

[0035] (1) Compared with the current ordinary spreader in which the left and right grippers are adjusted longitudinally synchronously and the positions of the four corners of the track slab cannot be adjusted separately, in this solution, according to the cooperation of the total station and the prism, the fine adjustment devices installed at the four corners of the track slab are flexibly adjusted, significantly improving the laying accuracy of the track slab, ensuring the laying quality of the track slab, with high fine adjustment accuracy, novel concept and ingenious design.

[0036] (2) Compared with the need to build concrete casting forms, this solution directly uses gunny bags as concrete placement containers. At the same time, during the construction of slab casting with a crane, the concrete casting hopper is used to simultaneously pour concrete into the two gunny bags between the laid track slabs and track base slabs, effectively avoiding the uneven situation of concrete casting on the left and right, saving time and effort, and ensuring the quality of concrete casting.

[0037] (3) Compared with the current method of curing the cast concrete for ballastless tracks, which is to manually sprinkle water as evenly as possible and then directly cover it with a film for curing, this solution uses a folding concrete curing shed to directly unfold and cover the cast concrete on the track base slab, which can be used to ensure the early and medium-term strength of the ballastless track concrete construction and provide a constant temperature and humidity curing environment.

[0038] In summary, the present invention has the advantages of simple and fast operation, smooth lifting, high precision adjustment, novel concept, and constant temperature and humidity curing of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of an intelligent construction system for ballastless tracks.

[0040] Figure 2 It is a schematic structural diagram of a slab casting construction crane.

[0041] Figure 3 It is a schematic structural diagram of a mobile gantry.

[0042] Figure 4 It is a schematic structural diagram of a pulling mechanism.

[0043] Figure 5 It is a schematic structural diagram of a lifting clamping mechanism.

[0044] Figure 6 It is a cross-sectional schematic diagram of a lifting clamping mechanism.

[0045] Figure 7 It is a cross-sectional view of a telescopic offset adjustment part.

[0046] Figure 8 It is a schematic structural diagram of a pouring hopper.

[0047] Figure 9 It is an installation schematic diagram of a total station, a prism, and a track slab laying fine adjustment device.

[0048] Figure 10 It is a schematic structural diagram of a track slab laying fine adjustment device.

[0049] Figure 11 It is a schematic structural diagram of a track slab laying fine adjustment device from another perspective.

[0050] Figure 12It is a schematic structural diagram of a folding shed for concrete curing.

[0051] Figure 13 It is a front view of the folding shed for concrete curing.

[0052] Figure 14 It is Figure 13 a side view (not fully shown) of Specific implementation manners

[0053] The present invention will be further described below through embodiments in conjunction with the accompanying drawings:

[0054] In conjunction with Figure 1 — Figure 14 As shown, an intelligent construction method for ballastless tracks is as follows in specific implementation steps:

[0055] Step S1: Build an intelligent construction system for ballastless tracks.

[0056] The intelligent construction system for ballastless tracks consists of a slab laying and pouring construction crane a, four track slab laying and fine-tuning devices b, a concrete pouring silo 4, and a folding shed c for concrete curing.

[0057] The slab laying and pouring construction crane a hoists the track slab 6 and moves it along the track base slab 5 to the slab laying area for lowering. Before lowering, four track slab laying and fine-tuning devices b are correspondingly installed at the left and right sides of the track slab 6 near the corners;

[0058] In step S1, the distance between the lowered track slab 6 and the track base slab 5 is set to be 10 cm by adjusting the track slab laying and fine-tuning device b.

[0059] Step S2: Prisms 7 are built on the sleepers near the four corners of the lowered track slab 6, and a total station 8 is built directly in front. Under the cooperation of the total station 8 and the prisms 7, the position of the track slab 6 is adjusted by the track slab laying and fine-tuning device b until the design requirements are met.

[0060] Step S3: First, gunny bags are symmetrically placed left and right between the track slab 6 and the track base slab 5, and the slab laying and pouring construction crane a hoists the concrete pouring silo 4 to simultaneously fill the two gunny bags between the laid track slab 6 and the track base slab 5 with concrete.

[0061] Step S4: Move the folding shed c for concrete curing and unfold it to carry out constant temperature and humidity curing on the poured concrete. Repeat the above steps until the construction of the entire ballastless track is completed.

[0062] The slab laying and pouring construction crane a is used to hoist the track slab 6 and lay it on the track base slab 5, or hoist the concrete pouring silo 4 to carry out concrete pouring between the track slab 6 and the track base slab 5.

[0063] The slab laying and pouring construction crane a is composed of a moving gantry a1, a pulling mechanism a2 located on the upper part of the moving gantry a1, and a lifting and clamping mechanism a3 connected to the pulling mechanism a2 correspondingly up and down.

[0064] The pulling mechanism a2 consists of a pulling main frame a21 installed on the upper part of the corresponding moving door frame a1, a pulling hydraulic cylinder a22 installed symmetrically and parallelly on the pulling main frame a21, a steel cable limiting winding column a23 symmetrically arranged on the left and right, and four steel cables a24 at the four corners of the pulling lifting clamping mechanism a3.

[0065] One end of the steel cable a24 is wound around the telescopic end of the pulling hydraulic cylinder a22, and the other end is wound around the corresponding steel cable limit winding column a23 and then vertically downward to be connected to the corresponding lifting ears at the four corners of the lifting clamping mechanism a3.

[0066] When the pulling hydraulic cylinder a22 is extended or retracted, the lifting and clamping mechanism a3 is lifted or lowered horizontally by synchronously pulling the four steel cables a24.

[0067] The lifting and clamping mechanism a3 consists of a lifting main frame a31, a clamping hydraulic cylinder a32 located in the middle and extending longitudinally and horizontally, a clamping connecting longitudinal rod a33 symmetrically arranged on the left and right, and a clamping seat a34 that is mirror-symmetrical on the left and right and connected to the clamping connecting longitudinal rod a33 on the corresponding side.

[0068] The two clamping connecting longitudinal rods a33 are hinged to the two ends of the clamping hydraulic cylinder a32 through a "V"-shaped cylinder connecting frame a35.

[0069] When both ends of the clamping hydraulic cylinder a32 are synchronously extended and retracted outward, the angle of the "V"-shaped cylinder connecting frame a35 is enlarged or reduced, driving the two clamping connecting longitudinal rods a33 to move closer or farther away, thereby causing the clamping seat a34 to be synchronously loosened outward or clamped inward.

[0070] The movable door frame a1 is composed of telescopic columns a11 located at four corners, pulling support frames a12 overlapped on the upper part of the telescopic columns a11 at four corners, and a roller assembly a13 installed at the bottom of the telescopic columns a11.

[0071] The roller assembly a13 consists of a roller box a131, a movable roller a132 located in the roller box a131, a crane moving drive motor a133 that provides moving driving force for the movable roller a132, and a guide limiting wheel a134 that is located outside the roller box a131 and slides along the side wall of the track base plate 5.

[0072] A cable storage coil a121 is installed on the front side of the pulling support frame a12, and a hydraulic station a122 is installed on the rear side.

[0073] The telescopic column a11 is composed of two sections of inner and outer square columns, and the upper section of the square column is equipped with a telescopic hydraulic cylinder a14, so as to realize the overall lifting and lowering of the pulling support frame a12.

[0074] Two telescopic columns a11 located on the left or right same side are provided with chute brackets a15.

[0075] The hoisting main frame a31 is correspondingly installed with a telescopic offset adjusting member a311 for the chute bracket a15.

[0076] A limit roller a312 capable of sliding along the inner chute of the chute bracket a15 is installed at the outer end of the telescopic offset adjusting member a311.

[0077] The telescopic offset adjusting member a311 is composed of a connecting member 311a, an anti-sway hydraulic cylinder 311b, and a foldable protective cover 311c.

[0078] The connecting member 311a is installed on the hoisting main frame a31 and extends horizontally outward.

[0079] The piston end of the anti-sway hydraulic cylinder 311b is installed at one end of the foldable protective cover 311c through a pin shaft, and the cylinder end is installed at the other end of the foldable protective cover 311c through a pin shaft.

[0080] The inner end of the foldable protective cover 311c is fixed on the connecting member 311a.

[0081] The clamping seat a34 is composed of a horizontal connecting rod a341 that is spaced front and back and connected to the clamping connection longitudinal rod a33, and a lifting frame a342 connected to the outer end of the horizontal connecting rod a341.

[0082] The hoisting main frame a31 is provided with a through hole and a sleeve for the horizontal connecting rod a341 to pass through.

[0083] The lifting frame a342 is integrally in an "L" shape and is used to lift the left and right side edges of the pouring silo a4 or the left and right side edges of the track slab.

[0084] The steel cable limit winding column a23 is composed of a steel cable vertical adjusting disc a231 located at the corner, a steel cable longitudinal adjusting disc a232 located at the rear corresponding to the telescopic end of the pulling hydraulic cylinder a22, and a steel cable dividing disc a233 located in the middle.

[0085] One end of two steel cables a24 is fixed to the telescopic end of the pulling hydraulic cylinder a22, and the other end sequentially bypasses the steel cable longitudinal adjusting disc a232, the steel cable dividing disc a233 and then is introduced into the steel cable vertical adjusting disc a231 at the corresponding corner.

[0086] Both the steel cable longitudinal adjusting disc a232 and the steel cable dividing disc a233 adopt two-layer wire discs, so as to respectively arrange two steel cables a24.

[0087] The track slab laying fine adjustment device b is correspondingly installed at the four corners of the track slab 6 to finely adjust the horizontal, longitudinal and vertical positions of the track slab 6.

[0088] The fine adjustment device b for laying track slabs is composed of a longitudinal adjustment component b1, a transverse adjustment component b2, and a vertical adjustment component b3, which are arranged successively from bottom to top.

[0089] The longitudinal adjustment component b1 is composed of a longitudinal slide base b11, a longitudinal slider b12 that slides along the longitudinal slide base b11, and a longitudinal driving member b13 that drives the longitudinal slider b12 to slide.

[0090] The transverse adjustment component b2 is composed of a transverse slide base b21 installed on the longitudinal slider b12, a transverse slider b22 that slides along the transverse slide base, and a transverse driving member b23 that drives the transverse slider b22 to slide.

[0091] The vertical adjustment component b3 is composed of a vertical slide base b31 installed on the transverse slider b22, a vertical slider b32 that slides vertically along the vertical slide base b31, and a vertical driving member b33 that drives the vertical slider b32 to lift.

[0092] On one side of the vertical slider b32 close to the track slab 6, there is an installation plate b321 threadedly connected to the track slab 6, so that it can be correspondingly installed at the four corners of the track slab 6;

[0093] The longitudinal driving member b13, the transverse driving member b23, and the vertical driving member b33 all adopt a screw motor reducer.

[0094] The bottom surface of the longitudinal slide base b11 is provided with a serrated anti-slip structure, and bolt mounting seats b111 for connecting to the track base plate are provided at the front and rear ends near the bottom edge.

[0095] In the middle of the longitudinal slide base b11, there is an installation opening for the screw rod of the longitudinal driving member b13 to pass through longitudinally.

[0096] The bottom of the longitudinal slide b12 is installed on the screw nut of the longitudinal driving member b13.

[0097] The longitudinal slide b12 is provided with a positioning groove b121 that fits with the transverse slide base b21.

[0098] The transverse slide base b21 is arranged symmetrically in front and back, and there is a space in the middle for the screw rod of the transverse driving member b23 to pass through.

[0099] The bottom of the transverse slider b22 is installed on the screw nut of the transverse driving member b23.

[0100] The bottoms of the longitudinal slider b12 and the transverse slider b22 are both provided with a dovetail groove structure and are correspondingly and fittingly connected to the longitudinal slide base b11 and the transverse slide base b21.

[0101] The vertical slide base b31 is provided with a placement cavity for the vertical screw rod of the vertical driving member b33 to pass through vertically, and the vertical slider b32 is installed on the screw nut of the vertical driving member b33.

[0102] The concrete curing folding shed c is used for maintaining the temperature and humidity of the poured concrete between the track slab 6 and the track base slab 5 at a constant level.

[0103] The concrete curing folding shed c consists of a foldable shed frame, a temperature and humidity constant maintenance mechanism c1 installed on the foldable shed frame, and a tarpaulin laid on the foldable shed frame.

[0104] The foldable shed frame is composed of several groups of driven traveling gantries c2 arranged side by side front and back, "X"-shaped connecting rods c3 connecting adjacent driven traveling gantries c2, and a traction driving traveling gantry c4 driving the driven traveling gantries c2.

[0105] The temperature and humidity constant maintenance mechanism c1 consists of a temperature and humidity sensor, a cooling and humidity maintaining pipeline c11, a heating and humidity maintaining pipeline c12, a water tank c13, and an electric heating steam generator c14.

[0106] The temperature and humidity sensors are arranged at multiple points inside the folding shed frame.

[0107] The heating and humidity maintaining pipeline c12 is arranged symmetrically on the left and right with two pipes and is respectively communicated with the outlet end of the electric heating steam generator c14.

[0108] The heating and humidity maintaining pipeline c12 is provided with heating nozzles c121 fixed on the driven traveling gantry c2 at intervals.

[0109] The cooling and humidity maintaining pipeline c11 is longitudinally installed in the middle on the top of the driven traveling gantry c2 and is provided with cooling nozzles at intervals.

[0110] The water outlet pipes of the water tank c13 are respectively connected to the cooling and humidity maintaining pipeline c11 and the electric heating steam generator c14.

[0111] The water tank c13 is internally provided with a water level sensor c131, an electric heating rod c132, and a temperature sensor c133.

[0112] The left and right sides of the rear side wall of the water tank c13 are symmetrically provided with cleaning ports c134.

[0113] The middle right part of the rear side wall of the water tank c13 is provided with a liquid level display window c135.

[0114] Both the water tank c13 and the electric heating steam generator c14 are installed on the gantry main body c41.

[0115] The outlet end of the electric heating steam generator c14 is successively equipped with a solenoid valve 1 c141, a pressure reducing valve c142, a filter c143, a high-pressure pump c144, and a solenoid valve 2 c145 along the steam conveying direction.

[0116] The tarpaulin is preferably made of heat-insulating plastic material.

[0117] The traction active running gantry c4 consists of a gantry main body c41, roller mounting seats c42 symmetrically located at the bottom end of the gantry main body c41, drive wheels c43 installed in the roller mounting seats c42, a gondola moving drive motor c44 for driving the drive wheels c43 to move, auxiliary wheels c45 installed at the front and rear ends of the roller mounting seats c42, and guide wheels c46 installed at the bottom of the roller mounting seats c42 and rolling along the side wall of the track base plate 5.

[0118] The bottom of the driven running gantry c2 adjacent to the traction active running gantry c4 is fixed on the roller mounting seat c42, and driven running rollers c21 are provided at the bottom of the other driven running gantries c2 except for the adjacent traction active running gantry c4.

[0119] When the traction active running gantry c4 moves along the track base plate 5, it drives a number of driven running gantries c2 to move away from or close to each other, so as to realize the unfolding and folding of the foldable shed frame.

[0120] The casting hopper 4 consists of a hopper body 41 and lifting support plates 42 located on the left and right sides of the hopper body 41.

[0121] A material distribution slope 411 in an inverted "V" shape and a plane 412 symmetrically connecting the left and right sides of the material distribution slope 411 are provided at the bottom of the hopper body 41.

[0122] A discharge pipe 413 is provided on the plane 412.

[0123] A flow sensor is provided in the discharge pipe 413.

[0124] A baffle 414 extending horizontally inward is provided at the top edge of the hopper body 41. Reinforcing rib plates 421 are provided at intervals in the front and rear of the lifting support plates 42.

Claims

1. A ballastless track intelligent construction method, characterized in that: The following steps are involved: Step S1, constructing a ballastless track intelligent construction system, the ballastless track intelligent construction system comprising a slab laying and pouring construction crane (a), four track slab laying and fine-tuning devices (b), a concrete pouring material bin (4) and a concrete curing folding shed (c), the track slab (6) is lifted by the slab laying and pouring construction crane (a), moved along the track base plate (5) to the slab laying area and lowered, and before lowering, four track slab laying and fine-tuning devices (b) are installed on the left and right sides of the track slab (6) correspondingly near the corners; Step S2, prisms (7) are set up on the sleepers near the four corners of the lowered track plate (6), and a total station (8) is set up in front of it. With the cooperation of the total station (8) and the prism (7), the track plate laying fine adjustment device (b) is used to adjust the position of the track plate (6) until the design requirements are met; Step S3, firstly, sacks are placed symmetrically between the track plate (6) and the track base plate (5), and the concrete pouring bin (4) is lifted by the slab laying and pouring construction crane (a) to simultaneously pour concrete into the two sacks between the laid track plate (6) and the track base plate (5); Step S4, move the concrete curing folding shed (c) and unfold it to perform constant temperature and humidity curing on the poured concrete, and repeat the above steps until the construction of the entire ballastless track is completed.

2. The intelligent construction method of ballastless track according to claim 1, characterized in that: In the step S1, the track plate laying fine adjustment device (b) is adjusted so that there is a gap of 10 cm between the lowered track plate (6) and the track base plate (5).

3. The intelligent construction method of ballastless track according to claim 1, characterized in that: The slab laying and pouring construction crane (a) comprises a movable gantry (a1), a pulling mechanism (a2) located on the upper part of the movable gantry (a1), and a lifting clamping mechanism (a3) ​​connected to the pulling mechanism (a2) in correspondence with each other up and down, wherein the pulling mechanism (a2) comprises a pulling main frame (a21) installed on the upper part of the corresponding movable gantry (a1), a pulling hydraulic cylinder (a22) symmetrically installed on the pulling main frame (a21), and steel cables symmetrically arranged on the left and right. A limit winding column (a23) and four steel cables (a24) at the four corners of the lifting and clamping mechanism (a3), one end of the steel cable (a24) is wound around the telescopic end of the pulling hydraulic cylinder (a22), and the other end is wound around the corresponding steel cable limit winding column (a23) and then vertically downward to be connected to the corresponding lifting ears at the four corners of the lifting and clamping mechanism (a3). When the pulling hydraulic cylinder (a22) is extended or retracted, the lifting and clamping mechanism (a3) ​​is horizontally lifted or lowered by synchronously pulling the four steel cables (a24).

4. The intelligent construction method of ballastless track according to claim 3 is characterized in that: The lifting and clamping mechanism (a3) ​​comprises a lifting main frame (a31), a clamping hydraulic cylinder (a32) located in the middle and extending longitudinally and horizontally, a clamping connecting longitudinal rod (a33) symmetrically arranged on the left and right, and a clamping seat (a34) symmetrically arranged on the left and right and connected to the clamping connecting longitudinal rod (a33) on the corresponding side. The two clamping connecting longitudinal rods (a33) are hinged to the two ends of the clamping hydraulic cylinder (a32) through a "V"-shaped cylinder connecting frame (a35). When the two ends of the clamping hydraulic cylinder (a32) are synchronously extended and retracted outward, the angle of the "V"-shaped cylinder connecting frame (a35) is increased or decreased. The small one drives the two clamping connecting longitudinal rods (a33) to move closer or farther away, so that the clamping seat (a34) is synchronously loosened outward or clamped inward; the clamping seat (a34) includes a horizontal connecting rod (a341) connected to the clamping connecting longitudinal rod (a33) at a front and rear interval and a lifting frame (a342) connected to the outer end of the horizontal connecting rod (a341); the lifting main frame (a31) is provided with a through hole and a sleeve for the horizontal connecting rod (a341) to pass through; the lifting frame (a342) is an "L"-shaped structure as a whole, which is used to lift the left and right sides of the casting silo (a4) or the left and right sides of the track plate.

5. The intelligent construction method of ballastless track according to claim 4, characterized in that: The movable gantry (a1) comprises telescopic columns (a11) at four corners, a pulling support frame (a12) overlapped on the upper part of the telescopic columns (a11) at the four corners, and a roller assembly (a13) installed at the bottom of the telescopic columns (a11), wherein the roller assembly (a13) comprises a roller box (a131), a movable roller (a132) located in the roller box (a131), and a crane movable driving device that provides a movable driving force for the movable roller (a132). The motor (a133) and the guide limiting wheel (a134) are located outside the roller box (a131) and slide along the side wall of the track base plate (5); the front side of the pulling support frame (a12) is equipped with a cable storage coil (a121), and the rear side is equipped with a hydraulic station (a122); the telescopic column (a11) adopts two sections of inner and outer square columns, and the upper square column is equipped with a telescopic hydraulic cylinder (a14), so as to realize the overall Lifting; the two telescopic columns (a11) located on the same left or right side are provided with a slide bracket (a15); the lifting main frame (a31) is installed with a telescopic offset adjustment member (a311) corresponding to the slide bracket (a15); the outer end of the telescopic offset adjustment member (a311) is installed with a limiting roller (a312) that can slide along the slide groove in the slide bracket (a15); the telescopic offset adjustment member (a311) includes a connecting member (311a) , an anti-sway hydraulic cylinder (311b), and a foldable protective cover (311c), wherein the connecting piece (311a) is installed on the lifting main frame (a31) and extends horizontally outward, the piston end of the anti-sway hydraulic cylinder (311b) is installed on one end of the foldable protective cover (311c) through a pin shaft, and the cylinder end is installed on the other end of the foldable protective cover (311c) through a pin shaft, and the inner end of the foldable protective cover (311c) is fixed on the connecting piece (311a).

6. The intelligent construction method for ballastless track according to claim 3, characterized in that: The steel cable limiting winding column (a23) comprises a steel cable vertical adjustment disk (a231) located at a corner, a steel cable longitudinal adjustment disk (a232) located at the rear side corresponding to the telescopic end of the pulling hydraulic cylinder (a22), and a steel cable deflection disk (a233) located in the middle. One end of the two steel cables (a24) is fixed to the telescopic end of the pulling hydraulic cylinder (a22), and the other end is successively passed around the steel cable longitudinal adjustment disk (a232) and the steel cable deflection disk (a233) and then introduced into the steel cable vertical adjustment disk (a231) at the corresponding corner. The steel cable longitudinal adjustment disk (a232) and the steel cable deflection disk (a233) both adopt upper and lower two-layer wire drums, so as to respectively accommodate two steel cables (a24).

7. The intelligent construction method of ballastless track according to claim 1, characterized in that: The track plate laying fine adjustment device (b) comprises a longitudinal adjustment component (b1), a transverse adjustment component (b2) and a vertical adjustment component (b3) which are arranged in sequence from bottom to top; the longitudinal adjustment component (b1) comprises a longitudinal slide base (b11), a longitudinal slider (b12) sliding along the longitudinal slide base (b11) and a longitudinal driving member (b13) pushing the longitudinal slider (b12) to slide; the transverse adjustment component (b2) comprises a transverse slide base (b21) installed on the longitudinal slider (b12), a transverse slider (b22) sliding along the transverse slide base and a longitudinal driving member (b13) pushing the transverse slider (b12) to slide. The vertical adjustment assembly (b3) includes a vertical slide base (b31) mounted on the horizontal slide block (b22), a vertical slide block (b32) vertically sliding along the vertical slide base (b31), and a vertical driving member (b33) driving the vertical slide block (b32) to rise and fall. The vertical slide block (b32) is provided with a mounting plate (b321) threadedly connected to the track plate (6) on one side thereof close to the track plate (6), so that the vertical slide block (b32) can be correspondingly mounted on the four corners of the track plate (6); the longitudinal driving member (b13), the horizontal driving member (b23), the vertical slide base (b31) mounted on the horizontal slide block (b22), a vertical slide block (b32) vertically sliding along the vertical slide base (b31), and a vertical driving member (b33) driving the vertical slide block (b32) to rise and fall. The longitudinal driving member (b33) adopts a screw motor reducer; the bottom surface of the longitudinal slide base (b11) is provided with a sawtooth anti-skid structure, and the front and rear ends are provided with bolt mounting seats (b111) connected to the track base plate near the bottom edge; the middle part of the longitudinal slide base (b11) is provided with a placement opening for the screw of the longitudinal driving member (b13) to pass longitudinally; the bottom of the longitudinal slide (b12) is installed on the screw nut of the longitudinal driving member (b13); the longitudinal slide (b12) is provided with a positioning groove (b121) that fits with the transverse slide base (b21); the transverse slide base (b21) The front and rear mirror images are symmetrically arranged, and a space is reserved in the middle for the screw of the horizontal driving member (b23) to pass through, and the bottom of the horizontal slider (b22) is installed on the screw nut of the horizontal driving member (b23); the bottoms of the longitudinal slider (b12) and the transverse slider (b22) are both provided with dovetail groove structures, and are correspondingly connected with the longitudinal slide base (b11) and the transverse slide base (b21); the vertical slide base (b31) is provided with a placement cavity for the screw of the vertical driving member (b33) to pass vertically, and the vertical slider (b32) is installed on the screw nut of the vertical driving member (b33).

8. The intelligent construction method for ballastless track according to claim 1, characterized in that: The concrete curing folding shed (c) comprises a foldable shed, a constant temperature and humidity curing mechanism (c1) installed on the foldable shed and a tarpaulin erected on the foldable shed. The foldable shed comprises a plurality of groups of driven traveling gantries (c2) arranged in parallel front and back, an "X"-shaped connecting rod (c3) connecting adjacent driven traveling gantries (c2) and a traction active traveling gantries (c4) driving the driven traveling gantries (c2). The constant temperature and humidity curing mechanism (c1) comprises a temperature and humidity sensor, a cooling and moisturizing pipeline (c11), a heating and moisturizing pipeline (c12), a water tank (c13) and an electric heating steam generator (c14). The temperature and humidity sensors are arranged at multiple points in the foldable shed. The traction active traveling gantries (c4) comprise a gantries body (c41), a roller mounting seat (c41) symmetrically located at the bottom end of the gantries body (c41) and a plurality of roller mounting seats (c42) arranged at the bottom end of the gantries body (c41). 42), a driving wheel (c43) installed in a roller mounting seat (c42), a shed car moving drive motor (c44) for driving the driving wheel (c43) to move, auxiliary wheels (c45) installed at the front and rear ends of the roller mounting seat (c42), and a guide wheel (c46) installed at the bottom of the roller mounting seat (c42) and rolling along the side wall of the track base plate (5), the bottom of the driven walking gantry (c2) of the adjacent traction active walking gantry (c4) is fixed on the roller mounting seat (c42), and the bottom of the other driven walking gantry (c2) except the adjacent traction active walking gantry (c4) is provided with a driven walking roller (c21), when the traction active walking gantry (c4) moves along the track base plate (5), it drives a plurality of driven walking gantries (c2) to move away from or close to each other, thereby realizing the unfolding and folding of the foldable shed.

9. The intelligent construction method of ballastless track according to claim 8, characterized in that: The heating and moisturizing pipeline (c12) is provided with two symmetrical pipes and connected to the outlet of the electric heating steam generator (c14) respectively. The heating and moisturizing pipeline (c12) is provided with heating nozzles (c121) fixed on the driven traveling gantry (c2) at intervals. The cooling and moisturizing pipeline (c11) is centrally installed longitudinally on the top of the driven traveling gantry (c2) and is provided with cooling nozzles at intervals. The water outlet pipe of the water tank (c13) is connected to the cooling and moisturizing pipeline (c11) and the electric heating steam generator (c14) respectively. The water tank (c13) is provided with a water level sensor (c131), an electric heating rod (c131) and a water level sensor (c131). 132), a temperature sensor (c133), a cleaning port (c134) is symmetrically provided on the left and right sides of the rear side wall of the water tank (c13), and a liquid level display window (c135) is provided on the middle right part of the rear side wall of the water tank (c13); the water tank (c13) and the electric heating steam generator (c14) are both installed on the door frame body (c41); the outlet end of the electric heating steam generator (c14) is equipped with a solenoid valve 1 (c141), a pressure reducing valve (c142), a filter (c143), a high-pressure pump (c144), and a solenoid valve 2 (c145) in sequence along the steam conveying direction; the tarpaulin is made of thermal insulation plastic material.

10. The intelligent construction method of ballastless track according to claim 1, characterized in that: The casting material bin (4) comprises a bin body (41) and lifting support plates (42) located on the left and right sides of the bin body (41); the bottom of the bin body (41) is provided with an inverted "V"-shaped material distribution slope (411) and a plane (412) symmetrically connected to the material distribution slope (411); the plane (412) is provided with a discharge pipe (413), and a flow sensor is provided in the discharge pipe (413); the top edge of the bin body (41) is provided with a baffle plate (414) extending horizontally inward, and the lifting support plate (42) is provided with reinforcing rib plates (421) at intervals in front and behind.

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