Modularized urban rail car, urban rail car set and rail collecting and unloading method

Abstract

The invention belongs to the technical field of steel rail collecting and unloading, and discloses a modularized urban rail car which comprises a bottom frame, a steel rail lifting device, a raceway beam, a steel rail guiding anti-overturning device, a safety door and a rail pulling winding device, and a notch is reserved in the middle of the bottom frame so that a steel rail can be put down or taken back in the middle of the bottom frame. Comprising a plurality of modularized urban rail steel rail vehicles, and the invention further discloses a rail collecting and unloading method which comprises the following steps that S1, the urban rail steel rail vehicle set is adopted; s2, when the middle old steel rail is recycled, a rail pulling winding device is started, and a steel rail lifting device is started to synchronously lift the steel rail to a raceway beam; s3, when a new steel rail in the middle is unloaded, the end of the steel rail is dragged to be in complete contact with the ground, the vehicle set moves forwards, and the remaining part of the steel rail is unloaded; and S4, when the steel rails are recovered or unloaded, the steel rails are lifted to the raceway beam or lifted to the ground. The method has the advantages that long and short steel rails are recovered and unloaded at the same time, and the requirement for centrally and laterally recovering and unloading the rails is met.

Description

Technical Field

[0001] The invention belongs to the technical field of collecting and unloading rails, and in particular relates to a modular urban rail vehicle, an urban rail vehicle set and a rail collecting and unloading method. Background Art

[0002] The number and length of China's urban rail lines continue to grow, and more and more rails need to be replaced. The main reasons for rail replacement include fatigue cracks, severe wear, unevenness and severe rust. The steps for rail replacement generally include dismantling and recycling old rails, and unloading and installing new rails.

[0003] When collecting and unloading 100m long rails, rail retracting and releasing trains are generally used, but there are the following defects: 1) Each car of the rail retracting and releasing train is connected by a bridge track, and the rail lifting vehicle moves forward and backward on the rail transport vehicle. Because the bridge track is difficult to disassemble and assemble, the rail retracting and releasing train adopts a fixed formation, and the operation efficiency is low; 2) There are many curves on the urban rail line, and the wear of the rails in the curved section is more serious than that in the straight section. Therefore, the rails in the curved section are replaced more frequently. Since the length of the rails in the curved section is generally shorter, it is not suitable to use rail retracting and releasing trains; 3) During operation, the rail lifting vehicle runs on the rail transport vehicle, and the locomotive driver and the rail lifting vehicle driver have high requirements for cooperation. If the operation is improper, the rail lifting vehicle has the risk of overturning. The rail lifting vehicle is heavy, and emergency handling is difficult, which can easily affect the operation of the subway.

[0004] When unloading 25m long rails, a flatbed crane is generally used. A flatbed crane is a crane installed on a railway flat car. The crane is generally set at the end of the flat car. A group of two flatbed cranes can lift the old rails on the ground onto the car from the side of the car body, and lift the new rails on the car to the ground. There are the following defects: 1) Flatbed cranes are only suitable for unloading and transporting rails of 25m or less. When recycling longer old rails, they need to be manually cut into short rails of 25m in length before they can be hoisted onto the car for transportation. When changing rails, the 25m long new rails need to be welded into seamless rails. This operation method is time-consuming and labor-intensive, causes air pollution, affects the occupational health of operators, and the quality of rail welding is difficult to guarantee; 2) Flatbed cranes can only unload rails from the side of the car body, and the rails must be placed on the shoulder of the line. Some subway lines have contact rails for subway vehicle power supply on one side and evacuation platforms on the other side. Rails cannot be placed on the shoulder, and flatbed cranes cannot unload rails.

[0005] Therefore, there is currently a lack of rail cars and train sets that can centrally and laterally collect and unload long and short rails, resulting in an inability to meet China's urban rail collection and unloading needs. Summary of the invention

[0006] The present invention aims to provide a modular urban rail car, an urban rail car set and a rail collecting and unloading method, which can collect and unload rails in the center and laterally and is applicable to both long and short rails, so as to solve the problem that there is currently a lack of rail cars and car sets that can collect and unload long and short rails in the center and laterally, resulting in the inability to meet the demand for collecting and unloading urban rails in China.

[0007] To this end, the technical solution adopted by the present invention is: a modular urban rail car, including a chassis and a rail lifting device, a roller beam, a rail guide anti-turning device, a safety door, and a rail pulling winch device, which are all detachably mounted on the chassis. A gap is left in the middle of the chassis for the rail to be lowered or retracted in the center. The rail lifting device includes an installation chassis that moves longitudinally along the chassis, a rail hanging column that moves laterally along the installation chassis, a rail hanging beam that can be rotatably mounted on the top of the rail hanging column, a retractable clamp assembly that moves left and right along the rail hanging beam, and a driving mechanism assembly that provides driving force for movement and telescoping. The retractable clamp assembly includes a telescopic arm that can be retracted downward and a clamp that can be rotatably installed at the bottom end of the telescopic arm. The central longitudinal rail or the lateral rail is clamped by the clamp to achieve collection and unloading. The upper layer of the roller beam can be rotated open to make room for the lower rail. The rail guide anti-rollover device is used to guide the path of the central lowering or retraction of the rail. The rail pulling and hoisting device is installed sideways at the end of the chassis to provide a dragging force for lowering or retracting the central longitudinally placed rail. The safety door is located on the inner side of the rail pulling and hoisting device to prevent the rail from moving longitudinally along the vehicle body and rushing out of the vehicle body.

[0008] As a preferred embodiment of the above scheme, coupler buffer devices are installed at the front and rear ends of the chassis, bogies are installed at intervals at the front and rear ends of the bottom of the chassis, and a braking device and an electrical hydraulic system are installed in the middle. The chassis includes end beams at the front and rear ends, side beams at the left and right sides, bolsters arranged at intervals at the front and rear and with the left and right ends transversely overlapped on the side beams, a middle beam arranged at intervals at the left and right, and short cross beams arranged at intervals at the front and rear. A spacing is left between the two middle beams and the front and rear end ends are correspondingly overlapped on the bolster beams to form a gap. The side beams are installed with longitudinally extending tracks, and the end beams are equipped with ferry boards facing outwards to facilitate the passage between the two vehicles, and the short cross beams are located between the middle beam and the side beams on the corresponding side.

[0009] Compared with the conventional underframe that has a central beam that runs longitudinally as an important supporting component of the underframe, this solution designs a pillow beam that runs horizontally, and then the front and rear ends of the central beam are overlapped on the pillow beam, ensuring the structural support strength while leaving a gap. The structure is interlocking and the design is ingenious.

[0010] Further preferably, the mounting base has a square structure as a whole, and four corners are provided with hanger moving rollers that can move longitudinally along the track. The bottom end of the hanging rail column is installed on the mounting base through a guide light bar. The hanging rail column and the mounting base, and the hanging rail beam and the retractable clamp assembly are all laterally translated through the meshing transmission of gears and racks. The telescopic arm adopts a multi-stage telescopic sleeve structure to ensure that the clamp can be moved to the left and right sides of the vehicle body and can adjust the angle to facilitate clamping the rails. The structural design is linked together.

[0011] Further preferably, the raceway beam comprises a beam frame which can be translated longitudinally along the base frame, and a lower rail placing beam, an upper rail placing beam, a closed supporting frame, and an open supporting frame which are all installed on the beam frame, the lower rail placing beam is fixedly installed on the beam frame, the upper rail placing beam is arranged in left-right mirror symmetry and is rotatably installed on the beam frame through a rotating drum, the closed supporting frame is located between the upper rail placing beams and is used to support and lock the end of the upper rail placing beam when closed, the open supporting frame is located on the side and is used to correspondingly support and lock the end of the upper rail placing beam when rotated 90° to open, when the rail needs to be placed on the lower rail placing beam, the upper rail placing beam needs to be rotated 90° to open it first, thereby making room for placement, and the structural design is reasonable.

[0012] Further preferably, the rail guiding and anti-rollover device includes an upper rail guide seat installed above the front and rear ends of the notch, a lower rail guide seat installed below the front and rear ends of the frame, and a middle rail guide assembly installed in the notch and arranged along the inclined direction of the rail, thereby jointly forming an anti-rollover path for the rails to be collected and unloaded. Since the rails are pulled from the ground to above the frame and need to pass through the notch of the frame obliquely, it is necessary to set guide rail directions above, below and at the notch of the frame to effectively prevent the rails from rolling over.

[0013] Further preferably, the rail upper guide seat comprises an upper guide mounting frame detachably mounted on the base frame, upper guide flat rollers mounted on the upper guide mounting frame, upper guide vertical rollers symmetrically mounted on the left and right sides, and upper guide plates symmetrically connected to the front and rear sides of the upper guide flat rollers, so as to limit and guide the rail portion located above the base frame, and the rail lower guide seat comprises a "V"-shaped mounting frame mounted below the base frame, a guide ring plate mounted at the bottom end of the "V"-shaped mounting frame and having a trumpet-shaped structure facing outward at the front and rear ends, lower guide flat rollers located on the upper and lower sides of the guide ring plate, and upper guide rollers located on the left and right sides of the guide ring plate The lower guide vertical roller on the side can limit and guide the rail part located below the chassis. The lower guide vertical roller is of a coarse upper structure and a thin lower structure, so as to prevent the rail from turning over. The rail middle guide assembly is of a front-to-back mirror-symmetrical structure as a whole. The rail middle guide assembly includes a middle guide side plate welded to the corresponding side middle beam and a plurality of middle guide flat rollers and middle guide plates all mounted on the middle guide side plates. The middle guide flat rollers and middle guide plates are matched with the rail entering from either end before and after the notch to guide up and down. The middle guide plate is correspondingly connected with the front and / or rear sides of the middle guide flat rollers.

[0014] The guide components in the rails adopt a front-to-back mirror-symmetrical structure, so that the rails entering from either end of the gap can be diagonally prevented from overturning. The car body can be flexibly turned front and back without affecting the collection and unloading of the rails.

[0015] It is further preferred that the rail pulling winch device includes a winch mounting seat detachably mounted on the base frame, a winch mounted on the winch mounting seat and a rail clamp mounted on the end of the winch wire rope, the rail clamp being used to clamp the dragging end of the rail; the safety door includes a door frame symmetrically and detachably mounted on the base frame and two left and right door bodies rotatably mounted on corresponding side door frames, a stopper is provided at the bottom of the door body, and the two door bodies are correspondingly provided with door locks fixed by inserting locking pins, and an anti-wear roller is provided at the upper inner end of the door body for the wire rope of the rail pulling winch device to pass through. The safety door is installed in a reasonable position, and the safety door effectively prevents the rail from rushing out of the vehicle body along the longitudinal direction of the vehicle body and resists the impact force of the rail through the stopper.

[0016] Further preferably, the lower rail placing beam and the upper rail placing beam are both provided with roller assemblies for placing the rails and rail locking assemblies for locking the rails at intervals on the left and right, the top of the rotating drum is connected to the beam frame through a connecting plate, the beam frame is provided with rollers for moving the track beam that can translate longitudinally along the track on the left and right, the beam frame is connected to the mounting base frame, so that the rail lifting device drives the track beam to translate longitudinally synchronously along the base frame, the structural design is reasonable, kills two birds with one stone, and reduces the cost of the driving parts.

[0017] The present invention also provides an urban rail car set, comprising a plurality of modular urban rail cars as described above connected end to end.

[0018] The present invention also provides a rail collecting and unloading method, comprising the following steps:

[0019] Step S1, using the above-mentioned urban rail car set, and loading and unloading the rail lifting device, the rolling beam, the rail guide anti-turning device, the safety door and the rail pulling winch device according to the needs;

[0020] Step S2, when recovering the old rails placed longitudinally in the center, first use the rail lifting equipment to lift the end of the rail, then connect the wire rope of the rail pulling hoisting device to the front end of the rail, start the rail pulling hoisting device, move the rail along the anti-turnover path formed by the rail guide anti-turnover device until the rear end of the rail is located on the bottom frame, start the rail lifting device of the corresponding adjacent modular urban rail car to synchronously lift the rail to the raceway beam;

[0021] Step S3, when unloading the new rail placed longitudinally in the center, the wire rope of the rail pulling winch is connected to the rear end of the rail, and the end of the rail is dragged to completely contact the ground under the action of the deadweight of the rail, and the train group moves forward to unload the remaining part of the rail;

[0022] Step S4: When recovering the old rails longitudinally placed on the side or unloading the new rails to the side, the rail lifting device corresponding to the adjacent modular urban rail car is used to synchronously lift the rails from the ground to the roller beam or lift the rails from the roller beam to the ground.

[0023] Beneficial effects of the present invention:

[0024] (1) Compared with the current method of collecting and unloading 100-meter-long rails, which uses a rail collection and unloading train, and a flatbed crane is required for collecting and unloading 25-meter-long rails, which is troublesome to replace. This solution uses a modular urban rail car that can be flexibly installed with a rail lifting device, a roller beam, a rail guide anti-rollover device, a safety door, and a rail pulling winch. The modular urban rail cars are connected in groups according to the length of the rails, so that long and short rails can be collected and unloaded at the same time, meeting the needs of replacing rails in curved sections and straight sections of the subway line at the same time. The concept is novel and the design is ingenious.

[0025] (2) A notch is left in the middle of the frame for the rail to be lowered or retracted in the center, and the upper layer of the roller beam can be rotated to open to make room for the lower rail. The rail guide anti-turnover device guides the path for the rail to be lowered or retracted in the center. The rail pulling winch device is installed on the side of the end of the frame to provide a dragging force for lowering or retracting the centrally placed longitudinal rail. The devices cooperate with each other to achieve the longitudinal retraction and unloading of the rail in the center, effectively avoiding the situation where the rail cannot be placed on the shoulder and cannot be unloaded. The frame is installed to move longitudinally along the frame, and the rail column moves laterally along the installation frame. The rail beam can be rotatably installed on the top of the rail column. The retractable clamp assembly moves left and right along the rail beam. The drive mechanism assembly provides moving and retracting driving force. The clamp of the retractable clamp assembly can be rotatably installed at the bottom of the telescopic arm, thereby realizing the flexible adjustment of the clamp's horizontal and vertical positions and the clamping angle position to meet the needs of lateral retraction and unloading of rails. The automation efficiency of retracting and unloading rails is high, the operation is convenient and fast, and manpower and material resources are effectively saved.

[0026] In summary, the present invention has the advantages of realizing the collection and unloading of long and short rails at the same time, meeting the requirements of central and lateral collection and unloading of rails, high automation efficiency, convenient and fast operation, and effective saving of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is the front view of the modular urban rail vehicle.

[0028] Figure 2 for Figure 1 Top view of the .

[0029] Figure 3 A cross-sectional view of a modular urban rail vehicle.

[0030] Figure 4 A top view of the chassis.

[0031] Figure 5 This is the left view of the rail lifting device.

[0032] Figure 6 This is the front view of the rail lifting device.

[0033] Figure 7 This is the left view of the raceway beam.

[0034] Figure 8 This is the front view of the raceway beam.

[0035] Fig. 9 The top view of the raceway beam.

[0036] Fig.10 It is the front view of the rail guide anti-rollover device.

[0037] Fig.11 It is a top view of the guide seat on the rail;

[0038] Fig.12 It is the left view of the guide seat under the rail;

[0039] Fig.13 It is a top view of the guide assembly in the rail;

[0040] Fig.14 It is the left side view of the safety door.

[0041] Fig.15 This is the main view of the safety door.

[0042] Fig.16 It is the front view of the rail pulling winch device.

[0043] Fig.17 It is a schematic diagram of the lateral collection and unloading of rails by urban rail train sets.

[0044] Fig.18 This is a schematic diagram when the rails are not dragged.

[0045] Fig.19 Schematic diagram of the steps for dragging the front end of the rail through the third modular urban rail car.

[0046] Fig. 20 Schematic diagram of the steps for dragging the front end of the rail past the second modular urban rail car.

[0047] Fig.21 Schematic diagram of the steps for dragging the rails onto the roller beams of the first two modular urban rail cars. DETAILED DESCRIPTION

[0048] The present invention will be further described below by way of embodiments and in conjunction with the accompanying drawings:

[0049] Combination Figure 1 — Fig.21 As shown, a modular urban rail vehicle is composed of a base frame 1 and a rail lifting device 2, a rolling beam 3, a rail guiding anti-turnover device 4, a safety door 5, and a rail pulling winch device 6, which are all detachably mounted on the base frame 1.

[0050] A notch 1a is left in the middle of the base frame 1 for the rail 9 to be lowered or retracted in the middle.

[0051] Coupler buffer devices 7 are installed at the front and rear ends of the chassis 1, bogies 8 are installed at intervals at the front and rear ends of the bottom of the chassis 1, and a braking device and an electrical hydraulic system are installed in the middle.

[0052] The chassis 1 is composed of end beams 11 at the front and rear ends, side beams 12 at the left and right sides, bolster beams 13 arranged at intervals in front and back and with the left and right ends transversely overlapped on the side beams 12, a middle beam 14 arranged at intervals in the left and right sides, and short cross beams 15 arranged at intervals in the front and back.

[0053] There is a gap between the two middle beams 14 and the front and rear end heads are correspondingly overlapped on the bolster beam 13, thereby forming a gap 1a.

[0054] The side beam 12 is mounted with a rail 121 extending longitudinally.

[0055] The track 121 is of channel steel structure, and a rack is provided inwardly on the upper edge thereof, and is meshed with the drive mechanism assembly through a gear rack for transmission.

[0056] The end beam 11 is provided with a ferry 111 through fasteners facing outwards to facilitate passage between two vehicles.

[0057] A steel grating is installed on the upper surface of the base frame 1 through a hinge to prevent water and snow accumulation and increase the anti-skid effect. The folding installation can be flipped open to facilitate personnel to enter the base frame 1 for maintenance and repair.

[0058] The short cross beam 15 is located between the center beam 14 and the side beam 12 on the corresponding side.

[0059] The rail lifting device 2 consists of an installation base frame 21 that moves longitudinally along the base frame 1, a rail column 22 that moves laterally along the installation base frame 21, a rail beam 23 rotatably installed on the top of the rail column 22, a retractable clamp assembly 24 that moves left and right along the rail beam 23, and a driving mechanism assembly that provides driving force for movement and extension.

[0060] The retractable clamp assembly 24 consists of a telescopic arm that can be retracted downward and a clamp 242 rotatably mounted at the bottom end of the telescopic arm. The clamp 242 clamps the central longitudinal rail 9 or the lateral rail 9 to achieve collection and unloading.

[0061] The mounting frame 21 is in a square frame structure as a whole, and the four corners are provided with hanging device moving rollers that can move longitudinally along the track 121.

[0062] The bottom end of the hanging rail column 22 is mounted on the mounting base 21 through a light guide bar.

[0063] The hanging rail column 22 and the mounting base 21, and the hanging rail crossbeam 23 and the retractable clamp assembly 24 are all laterally translated through the meshing transmission of gears and racks.

[0064] The telescopic arm adopts a multi-stage telescopic sleeve structure.

[0065] The upper layer of the raceway beam 3 can be rotated open to make room for the lower layer rails.

[0066] The raceway beam 3 is composed of a beam frame 31 which can translate longitudinally along the base frame 1 , and a lower rail placement beam 32 , an upper rail placement beam 33 , a closed support frame 34 , and an open support frame 35 which are all installed on the beam frame 31 .

[0067] The lower rail placement beam 32 is fixedly installed on the beam frame 31.

[0068] The upper rail placement beam 33 is arranged in mirror symmetry on the left and right sides and is rotatably mounted on the beam frame 31 through a rotating drum 331.

[0069] The lower rail placement beam 32 and the upper rail placement beam 33 are both provided with roller assemblies 36 for placing the rails 9 and rail locking assemblies 37 for locking the rails 9 at intervals on the left and right.

[0070] The top of the drum 331 is connected to the beam frame 31 via a connecting plate 331a.

[0071] The beam frame 31 is provided with rollers on the left and right sides of the raceway beam that can move longitudinally along the track 121 .

[0072] The beam frame 31 is connected to the mounting base frame 21 , so that the rail lifting device 2 drives the raceway beam 3 to move longitudinally synchronously along the base frame 1 .

[0073] The closing support bracket 34 is located between the upper rail placement beams 33 and is used to support and lock the ends of the upper rail placement beams 33 when closed.

[0074] The opening support bracket 35 is located at the side and is used to correspondingly support and lock the end of the upper rail placement beam 33 when it is rotated 90 degrees to open.

[0075] The rail guiding anti-turnover device 4 is used to guide the rail 9 to be lowered or retracted in the center.

[0076] The rail guide anti-rollover device 4 is composed of a rail upper guide seat 41 installed above the front and rear ends of the gap 1a, a rail lower guide seat 42 installed below the front and rear ends of the base frame 1, and a rail middle guide component 43 installed in the gap 1a and arranged along the inclined direction of the rail 9, thereby jointly forming an anti-rollover path for the rail 9 to pass through when it is collected and unloaded.

[0077] The rail upper guide seat 41 is composed of an upper guide mounting frame 411 detachably mounted on the base frame 1, upper guide flat rollers 412 mounted on the upper guide mounting frame 411, upper guide vertical rollers 413 symmetrically disposed on both sides, and upper guide plates 414 symmetrically connected to the front and rear sides of the upper guide flat rollers 412 in a front-to-rear mirror-symmetrical manner, thereby limiting and guiding the portion of the rail 9 located above the base frame 1.

[0078] The rail lower guide seat 42 is composed of a "V"-shaped mounting frame 421 installed below the base frame 1, a guide ring plate 422 installed at the bottom of the "V"-shaped mounting frame 421 and having a trumpet-shaped structure facing outward at the front and rear ends, lower guide flat rollers 423 located at the upper and lower sides of the guide ring plate 422, and lower guide vertical rollers 424 located at the left and right sides of the guide ring plate 422, thereby limiting and guiding the portion of the rail 9 located below the base frame 1. The lower guide vertical rollers 424 have a coarse upper and thin lower structure, thereby preventing the rail from flipping over.

[0079] The rail center guide assembly 43 is a mirror-symmetrical structure as a whole. The rail center guide assembly 43 is composed of a center guide side plate 433 welded to the corresponding side center beam 14 and a plurality of center guide flat rollers 431 and a center guide plate 432 which are all installed on the center guide side plate 433.

[0080] The middle guide flat roller 431 and the middle guide plate 432 are both matched with the rail 9 entering from either end of the notch 1a to guide the steel rail 9 upward and downward.

[0081] The middle guide plate 432 is correspondingly connected to the front side and / or the rear side of the middle guide flat roller 431 .

[0082] The rail pulling winch device 6 is installed sideways at the end of the base frame 1 to provide a pulling force for lowering or retracting the centrally arranged rail 9.

[0083] The rail pulling winch device 6 is composed of a winch mounting seat 61 detachably mounted on the base frame 1 , a winch 62 mounted on the winch mounting seat 61 , and a rail clamp 63 mounted on the end of the wire rope of the winch 62 .

[0084] The rail clamp 63 is used to clamp the trailing end of the rail 9 .

[0085] The safety door 5 is located inside the rail pulling and hoisting device 6 and is used to prevent the rail from moving longitudinally along the vehicle body and rushing out of the vehicle body.

[0086] The safety door 5 is composed of a door frame 51 which is symmetrically and detachably mounted on the base frame 1 , and two left and right door bodies 52 which are rotatably mounted on the corresponding side door frames 51 .

[0087] A stopper 53 is provided at the bottom of the door body 52, and door locks 54 fixed by locking pins are provided correspondingly on the two door bodies 52. An anti-wear roller 55 is provided at the upper inner end of the door body 52 for the steel wire rope of the rail hoisting device 6 to pass through.

[0088] A city rail steel rail vehicle set is composed of three modular city rail steel rail vehicles connected end to end.

[0089] A rail collecting and unloading method, the specific implementation steps are as follows:

[0090] Step S1, using an urban rail car set as described above, and loading and unloading a rail lifting device 2, a rolling beam 3, a rail guide anti-turnover device 4, a safety door 5 and a rail pulling winch device 6 according to demand.

[0091] Step S2, when recovering the old rail placed longitudinally in the center, first use the rail lifting equipment to lift the end of the rail 9, then connect the wire rope of the rail pulling hoisting device 6 to the front end of the rail 9, start the rail pulling hoisting device 6, so that the rail 9 moves along the anti-turnover path formed by the rail guide anti-turnover device 4 until the rear end of the rail 9 is located on the base frame 1, and start the rail lifting device 2 of the corresponding adjacent modular urban rail car to synchronously lift the rail 9 onto the raceway beam 3.

[0092] Step S3, when unloading the new rail placed longitudinally in the center, the wire rope of the rail pulling winch 6 is connected to the rear end of the rail 9, and the end of the rail 9 is dragged until it completely contacts the ground under the action of the deadweight of the rail 9, and the train group moves forward to unload the remaining part of the rail 9.

[0093] Step S4, when recovering the old rails longitudinally placed on the side or unloading the new rails to the side, the rail lifting device 2 corresponding to the adjacent modular urban rail car is used to synchronously lift the rails 9 from the ground to the roller beam 3 or lift the rails 9 from the roller beam 3 to the ground.

Claims

1. A modular urban rail car, characterized in that: The invention comprises a base frame (1) and a rail lifting device (2) which can be detachably mounted on the base frame (1), a roller beam (3), a rail guide anti-turnover device (4), a safety door (5), and a rail pulling winch device (6). A notch (1a) is left in the middle of the base frame (1) for the rail (9) to be lowered or retracted in the middle. The rail lifting device (2) comprises a mounting base frame (21) which moves longitudinally along the base frame (1), a rail hanging column (22) which moves laterally along the mounting base frame (21), a rail hanging crossbeam (23) which is rotatably mounted on the top of the rail hanging column (22), a retractable clamp assembly (24) which moves left and right along the rail hanging crossbeam (23), and a driving mechanism assembly which provides a driving force for movement and retraction. The telescopic clamp assembly (24) comprises a telescopic arm that can be telescoped downward and a clamp (242) rotatably mounted at the bottom end of the telescopic arm, wherein the central longitudinal rail (9) or the lateral rail (9) is clamped by the clamp (242) to realize the collection and unloading, the upper layer of the roller beam (3) can be rotated to open so as to make room for the lower rail, the rail guide anti-turn device (4) is used to guide the path of the central lowering or retraction of the rail (9), the rail pulling winch device (6) is installed at the side of the end of the base frame (1) to provide a dragging force for the central longitudinally arranged rail (9) to be lowered or retracted, and the safety door (5) is located on the inner side of the rail pulling winch device (6) to prevent the rail from moving longitudinally along the vehicle body and rushing out of the vehicle body.

2. A modular urban rail car according to claim 1, characterized in that: The front and rear ends of the chassis (1) are provided with a coupler buffer device (7), the bottom of the chassis (1) is provided with a bogie (8) at intervals at the front and rear ends, and a brake device and an electric hydraulic system are provided in the middle. The chassis (1) comprises end beams (11) at the front and rear ends, side beams (12) at the left and right sides, a bolster (13) arranged at intervals at the front and rear ends and transversely overlapped on the side beams (12), a middle beam (14) arranged at intervals at the left and right sides, and a short cross beam (15) arranged at intervals at the front and rear ends, a spacing is left between the two middle beams (14) and the front and rear ends are correspondingly overlapped on the bolster (13), thereby forming a gap (1a), the side beams (12) are provided with a longitudinally extending track (121), the end beams (11) are provided with a ferry (111) facing outwards for facilitating passage between two vehicles, and the short cross beam (15) is located between the middle beam (14) and the side beam (12) on the corresponding side.

3. A modular urban rail car according to claim 2, characterized in that: The mounting frame (21) is in the form of a square frame structure as a whole, and four corners are provided with hanging device moving rollers that can move longitudinally along the track (121). The bottom end of the hanging rail column (22) is mounted on the mounting frame (21) via a guide light bar. The hanging rail column (22) and the mounting frame (21), and the hanging rail crossbeam (23) and the telescopic clamp assembly (24) are all laterally translated via gear and rack meshing transmission. The telescopic arm adopts a multi-stage telescopic sleeve structure.

4. A modular urban rail car according to claim 2, characterized in that: The raceway beam (3) comprises a beam frame (31) capable of longitudinal translation along the base frame (1), and a lower rail placement beam (32), an upper rail placement beam (33), a closed support frame (34), and an open support frame (35) all mounted on the beam frame (31); the lower rail placement beam (32) is fixedly mounted on the beam frame (31); the upper rail placement beam (33) is arranged in a mirror-symmetrical manner on the left and right and is rotatably mounted on the beam frame (31) via a rotating drum (331); the closed support frame (34) is located between the upper rail placement beams (33) and is used to support and lock the end of the upper rail placement beam (33) when closed; and the open support frame (35) is located on the side and is used to correspondingly support and lock the end of the upper rail placement beam (33) when rotated 90 degrees to open.

5. The modular urban rail vehicle according to claim 1, characterized in that: The rail guide anti-turnover device (4) comprises an upper rail guide seat (41) mounted above the front and rear ends of the notch (1a), a lower rail guide seat (42) mounted below the front and rear ends of the chassis (1), and a middle rail guide assembly (43) mounted in the notch (1a) and arranged along the inclined direction of the rail (9), thereby jointly forming an anti-turnover path for the rail (9) to pass through when being collected and unloaded.

6. A modular urban rail car according to claim 5, characterized in that: The rail upper guide seat (41) comprises an upper guide mounting frame (411) detachably mounted on the base frame (1), upper guide flat rollers (412) mounted on the upper guide mounting frame (411), upper guide vertical rollers (413) symmetrically disposed on both sides, and upper guide plates (414) connected to the front and rear sides of the upper guide flat rollers (412) in a mirror-image manner, so as to limit and guide the portion of the rail (9) located above the base frame (1). The rail lower guide seat (42) comprises a "V"-shaped mounting frame (421) mounted below the base frame (1), a guide ring plate (422) mounted at the bottom end of the "V"-shaped mounting frame (421) and having a trumpet-shaped structure with its front and rear ends facing outward, a lower guide flat roller (423) located on the upper and lower sides of the guide ring plate (422), and a lower guide plate (424) located on the guide ring plate (424). The lower guide vertical rollers (424) on the left and right sides of the base frame (1) are used to limit and guide the portion of the steel rail (9) located below the base frame (1). The lower guide vertical rollers (424) are of a thick upper structure and a thin lower structure. The steel rail middle guide assembly (43) is of a front-to-back mirror-symmetrical structure as a whole. The steel rail middle guide assembly (43) includes a middle guide side plate (433) welded to the corresponding side middle beam (14) and a plurality of middle guide flat rollers (431) and middle guide plates (432) all mounted on the middle guide side plates (433). The middle guide flat rollers (431) and middle guide plates (432) are both used to guide the steel rail (9) entering from either the front or rear end of the notch (1a) in an upward and downward direction. The middle guide plates (432) are correspondingly connected to the front side and / or the rear side of the middle guide flat roller (431).

7. A modular urban rail car according to claim 1, characterized in that: The rail-pulling winch device (6) comprises a winch mounting seat (61) detachably mounted on a base frame (1), a winch (62) mounted on the winch mounting seat (61), and a rail clamp (63) mounted on the end of a steel wire rope of the winch (62), wherein the rail clamp (63) is used to clamp the dragging end of the rail (9); the safety door (5) comprises a door frame (51) symmetrically detachably mounted on the base frame (1) and two left and right door bodies (52) rotatably mounted on corresponding side door frames (51), a stopper (53) is provided at the bottom of the door body (52), and the two door bodies (52) are correspondingly provided with door locks (54) fixed by inserting a lock pin, and an anti-wear roller (55) is provided at the upper inner end of the door body (52) for the steel wire rope of the rail-pulling winch device (6) to pass through.

8. The modular urban rail vehicle according to claim 4, characterized in that: The lower rail placement beam (32) and the upper rail placement beam (33) are both provided with roller assemblies (36) for placing the rails (9) and rail locking assemblies (37) for locking the rails (9) at intervals on the left and right. The top of the rotating drum (331) is connected to the beam frame (31) via a connecting plate (331a). The beam frame (31) is provided with rollers for moving the track beams that can move longitudinally along the track (121) on the left and right. The beam frame (31) is connected to the mounting base frame (21), so that the rail lifting device (2) drives the track beam (3) to move longitudinally along the base frame (1) synchronously.

9. An urban rail train set, characterized in that: A modular urban rail car comprising a plurality of rail cars connected end to end as described in any one of claims 1 to 8.

10. A rail collecting and unloading method, characterized in that: The following steps are involved: Step S1, using an urban rail car set as claimed in claim 9, and loading and unloading a rail lifting device (2), a rolling beam (3), a rail guide anti-turnover device (4), a safety door (5) and a rail pulling winch device (6) according to demand; Step S2, when recovering the old rail placed longitudinally in the center, first use the rail lifting equipment to lift the end of the rail (9), then connect the wire rope of the rail pulling hoisting device (6) to the front end of the rail (9), start the rail pulling hoisting device (6), so that the rail (9) moves along the anti-turnover path formed by the rail guide anti-turnover device (4) until the rear end of the rail (9) is located on the base frame (1), and start the rail lifting device (2) of the corresponding adjacent modular urban rail car to synchronously lift the rail (9) onto the roller beam (3); Step S3, when unloading the new steel rail placed longitudinally in the center, the steel wire rope of the rail pulling winch (6) is connected to the rear end of the steel rail (9), and the end of the steel rail (9) is dragged to completely contact the ground under the action of the deadweight of the steel rail (9), and the train group moves forward to unload the remaining part of the steel rail (9); Step S4: when recovering the old rails longitudinally placed on the side or unloading the new rails to the side, the rail lifting device (2) corresponding to the adjacent modular urban rail rail car is used to synchronously lift the rails (9) from the ground to the roller beam (3) or to lift the rails (9) from the roller beam (3) to the ground.

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