Track-laying equipment with single-double line change

Abstract

The present application relates to the technical field of track construction equipment, and discloses a track laying equipment capable of changing between single-line and double-line, which comprises a track laying vehicle, a towing vehicle and a flatbed vehicle, wherein the towing vehicle pulls a plurality of flatbed vehicles to cross the main line concrete sleeper and runs in front of the track transport vehicle, and the track laying vehicle runs above the towing vehicle and the flatbed vehicle. Compared with the prior art, the present application has the following advantages: when double-line track laying is performed, the rail shifting cantilever is rotated and the steel rail is transferred to the electric telescopic arm, so that the same set of equipment can be switched between main line laying and temporary line laying, and the vehicle group does not need to be adjusted away from the main line or back to the station to switch lines. In the process of transferring the steel rail, the steel rail does not bend greatly, the reaction force exerted on the device structure by the bending of the steel rail is reduced, the device is more solid, the structural life is increased, the rail shifting cantilever, the electric telescopic arm and the towing vehicle are respectively powered by the batteries carried by the vehicle bodies, and the above-mentioned batteries simultaneously serve as the vehicle body counterweight, thereby reducing the risk of vehicle body rollover.

Description

Technical Field

[0001] This invention relates to the field of track construction equipment technology, specifically to a track laying equipment capable of single or double track configuration. Background Technology

[0002] Railway mainlines are mostly parallel double tracks. Conventional track laying operations first complete the rail laying on the main line, and then the track laying train is moved away from the main line or returned to the station to switch tracks before laying the adjacent track. Shunting and switching tracks occupy the construction window and affect the laying efficiency.

[0003] To reduce track switching, equipment capable of laying rails from one track to an adjacent track has emerged. Patent application CN115559163A discloses a multi-track track-laying integrated machine, whose second carriage is equipped with a horizontally rotatable rail-shifting device. An extension mechanism drives the rail-shifting mechanism to shift the rails to the adjacent track. Patent authorization announcement CN109930440B discloses a track-laying device for both the current track and adjacent tracks, where a slope-following rail shifter is installed on the flatbed car, and the rails are guided into the adjacent track's rail-bearing groove via the slope-following rail shifter. While these devices can reduce track switching back to the station, they still have shortcomings.

[0004] During the process of guiding the rail to the adjacent track, the rail needs to bend and deform along the rail-guiding path. The reaction force generated by the bending acts on the rail-guiding mechanism and the car body, which can easily cause structural damage and shorten the service life.

[0005] When the rails are laid on the outer side of the car body, the car body bears an off-center load, posing a risk of rollover. Existing technologies typically use separate counterweights or counterweight units to balance the off-center load. However, the counterweights are independent of the onboard power source, increasing the weight of the equipment and the complexity of the structure. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the existing double-track track laying operation has low shunting and track switching efficiency, the bending reaction force of the rail is large when the rail is guided to the adjacent track, which easily damages the device, and an additional counterweight is required when the adjacent track is eccentrically loaded. The present invention provides a track laying equipment that can change between single and double tracks.

[0007] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a track-laying equipment capable of single- or double-track switching, comprising a track-laying vehicle, a traction vehicle, and flatbed vehicles, wherein the traction vehicle pulls multiple flatbed vehicles that straddle the main line concrete sleepers and travels in front of the track transport vehicle, and the track-laying vehicle travels across the traction vehicle and flatbed vehicles. The rail paving vehicle is provided with an electrically rotating rail shifting cantilever, the end of the rail shifting cantilever is provided with a supporting crossbeam, the supporting crossbeam is connected to the end of the rail in a traction manner, the flatbed vehicle is provided with an electric telescopic arm, and the electric telescopic arm supports the bottom of the steel rail. During single-track paving, the rail shifting cantilever is parallel to the paving direction, the tractor and the flatbed vehicle do not participate in rail paving, and the rail paving vehicle pulls the rail from the rail transport vehicle and lays it on the main line. During double-track paving, the rail paving vehicle pulls the rail from the rail transport vehicle and places it on the electric telescopic arm, the rail shifting cantilever rotates and the electric telescopic arm extends, so as to transfer the steel rail to the sleepers of the adjacent line for paving.

[0008] Further, the rail paving vehicle is provided with a bearing platform, the root of the rail shifting cantilever is rotatably connected to the top of the bearing platform, and a motor for driving the rail shifting cantilever to rotate is arranged inside the bearing platform.

[0009] Further, parallel pull rods are arranged on both sides of the rail shifting cantilever, one end of each parallel pull rod is rotatably connected to the bearing platform, and the other end is rotatably connected to the supporting crossbeam.

[0010] Further, traction buckles matching with the steel rail limit wedges are arranged on both sides of the bottom of the supporting crossbeam, and a detachable shaft pin is rotatably arranged at the bottom of each traction buckle.

[0011] Further, the vehicle body of the rail paving vehicle is in a Π shape, and limit rail grooves are provided on both inner sides of the vehicle body of the rail paving vehicle.

[0012] Further, a limit beam is arranged in the middle of the flatbed vehicle, first limit rollers are arranged above both ends of the limit beam to fit with the limit rail grooves, and second limit rollers are arranged below both ends of the limit beam to fit with the side surfaces on both sides of the concrete sleeper.

[0013] Further, two pairs of turnover brackets are arranged on the top of the electric telescopic arm, each pair of turnover brackets is arranged on both sides of the steel rail, a spindle-shaped second carrier roller is arranged at the top of the electric telescopic arm between each pair of turnover brackets to support the bottom of the steel rail, positioning rollers are arranged on the turnover brackets to fit with the side surfaces of the steel rail, and the rotation axes of the positioning rollers and the second carrier roller are perpendicular to the traction moving direction of the steel rail.

[0014] Further, a plurality of first carrier rollers are arranged on the top surface of the electric telescopic arm, the rotation axis of each first carrier roller is parallel to the traction moving direction of the steel rail, and the top surface of the first carrier roller is lower than the top surface of the second carrier roller.

[0015] Further, the turnover brackets can be turned over to both sides of the electric telescopic arm, and limit brackets matching the turnover brackets are arranged on both sides of the electric telescopic arm.

[0016] Compared with the prior art, the present invention has the following advantages: 1. When laying double-track rails, the rail cantilever rotates and transfers the rail to the electric telescopic boom. After the electric telescopic boom extends, it moves the rail to the adjacent track for laying. This allows the same set of equipment to switch between laying on the main track and laying on the adjacent track without having to move the train set away from the main track or return to the station to change tracks.

[0017] 2. The rails do not bend significantly during the transfer process, reducing the reaction force exerted on the device structure by the bending of the rails, making the device more robust and increasing the structural lifespan.

[0018] 3. The rail cantilever, electric telescopic boom, and tractor are each powered by batteries carried on their respective vehicle bodies. These batteries also serve as counterweights for the vehicle body, reducing the risk of rollover. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the track-laying vehicle of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the crossbeam supported by the present invention.

[0022] Figure 4 This is a structural schematic diagram of the flatbed vehicle of the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of the electric telescopic arm of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the flip-up bracket of the present invention.

[0025] Figure 7 This is a schematic diagram of the present invention, showing the transfer track to the adjacent line.

[0026] Figure 8 This is a schematic diagram of the track end insertion operation of the present invention.

[0027] Figure 9 It is attached Figure 8 A schematic diagram at point a.

[0028] Figure 10 This is a schematic diagram of the track end of the present invention after it enters the groove.

[0029] Figure 11 It is attached Figure 10 A schematic diagram at point b in the middle.

[0030] Figure 12 This is a schematic diagram of the track-laying operation of the present invention.

[0031] As shown in the figure: 1. Track laying vehicle, 2. Traction vehicle, 3. Flatbed vehicle, 4. Support platform, 5. Rail cantilever, 6. Support beam, 7. Parallel tie rod, 8. Traction buckle, 9. Axle pin, 10. Limiting track groove, 11. Limiting beam, 12. Limiting roller one, 13. Limiting roller two, 14. Electric telescopic arm, 15. Idler roller one, 16. Tilting bracket, 17. Positioning roller, 18. Idler roller two, 19. Limiting bracket, 20. Motor. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Combined with appendix Figure 1 A track-laying equipment capable of single or double track switching includes a track-laying vehicle 1, a tractor 2, and a flatbed vehicle 3. The tractor 2 pulls multiple flatbed vehicles 3 across the main line concrete sleepers and travels in front of the track transport vehicle. The track-laying vehicle 1 travels across the tractor 2 and the flatbed vehicles 3.

[0034] Combined with appendix Figure 1 and 7 The track-laying vehicle 1 is equipped with an electrically rotating rail-shifting cantilever 5. The end of the rail-shifting cantilever 5 is equipped with a supporting beam 6, which is connected to the end of the traction rail. The flatbed vehicle 3 is equipped with an electrically telescopic arm 14, which supports the bottom of the rail. When laying single-track rails, the rail-shifting cantilever 5 is parallel to the laying direction. The traction vehicle 2 and the flatbed vehicle 3 do not participate in the track laying. The track-laying vehicle 1 pulls the rail from the rail transport vehicle and lays it on the main line. When laying double-track rails, the track-laying vehicle 1 pulls the rail from the rail transport vehicle and places it on the electrically telescopic arm 14. The rail-shifting cantilever 5 rotates and extends the electrically telescopic arm 14 to move the rail to the adjacent sleeper for laying.

[0035] The battery required for the operation of the rail cantilever 5 is carried by the rail laying vehicle 1, the battery for the operation of the electric telescopic boom 14 is carried by the flatbed vehicle 3, and the tractor 2 has its own power battery and is remotely driven by on-site personnel. Since the rails will be moved to the outside of the rail laying vehicle 1 and the flatbed vehicle 3 when laying temporary tracks, the above-mentioned battery structure can be used as an auxiliary counterweight for the vehicle body. Combined with other common matching methods, it can prevent the vehicle body from overturning when laying temporary tracks.

[0036] Combined with appendix Figure 2 and attached Figure 3 The track-laying vehicle 1 is equipped with a support platform 4. The root of the rail-shifting cantilever 5 is rotatably connected to the top of the support platform 4. The support platform 4 is equipped with a motor 20 that drives the rail-shifting cantilever 5 to rotate. Parallel tie rods 7 are provided on both sides of the rail-shifting cantilever 5. One end of the parallel tie rod 7 is rotatably connected to the support platform 4, and the other end is rotatably connected to the supporting beam 6. The hinge point of the rail-shifting cantilever 5 and the parallel tie rod 7 forms a parallelogram structure to ensure that the supporting beam 6 is always perpendicular to the rail direction when the rail-shifting cantilever 5 is rotated to any angle.

[0037] Combined with appendix Figure 3 The bottom sides of the supporting beam 6 are provided with traction buckles 8 that cooperate with the rail limiting wedges. The bottom of the traction buckle 8 is provided with a detachable axle pin 9. The rail limiting wedges are common components in track laying and will not be described in detail in this application.

[0038] Combined with appendix Figure 3 and attached Figure 4 The track laying vehicle 1 has a U-shaped body. Both sides of the inside of the track laying vehicle 1 are provided with limiting track grooves 10. The flatbed vehicle 3 has a limiting beam 11 in the middle. The upper ends of the limiting beam 11 are provided with limiting rollers 12 that fit with the limiting track grooves 10. The lower ends of the limiting beam 11 are provided with limiting rollers 13 that fit with the sides of the concrete sleepers.

[0039] In the above structure, the second limiting roller 13 restricts the position of the flatbed car 3, ensuring that the flatbed car 3 is always on top of the concrete sleeper and roughly aligned with the concrete sleeper. The first limiting roller 12, together with the limiting track groove 10, restricts the position of the track laying car 1, ensuring that the track laying car 1 and the flatbed car 3 are roughly aligned.

[0040] Combined with appendix Figure 5 The electric telescopic arm 14 is provided with two pairs of flipping brackets 16 at the top. Each pair of flipping brackets 16 is set on both sides of the rail. The top of the electric telescopic arm 14 is provided with a spindle-shaped roller 18 at the middle of each pair of flipping brackets 16 to support the bottom of the rail. The flipping bracket 16 is provided with a positioning roller 17 that fits against the side of the rail.

[0041] The rotation axes of the positioning roller 17 and the second idler roller 18 are perpendicular to the traction movement direction of the rail. Multiple first idlers 15 are arranged on the top surface of the electric telescopic arm 14. The rotation axis of the first idler roller 15 is parallel to the traction movement direction of the rail. The top surface of the first idler roller 15 is lower than the top surface of the second idler roller 18.

[0042] Combined with appendix Figure 6 The flipping bracket 16 can be flipped to both sides of the electric telescopic arm 14, and both sides of the electric telescopic arm 14 are provided with limiting brackets 19 that cooperate with the flipping bracket 16.

[0043] When laying the main track, the device of this application uses a traction buckle 8 to pull the steel rail into the groove, which is similar to the prior art, so it will not be described further.

[0044] In double-track laying operations, when laying temporary tracks, first control the tractor 2 to move so that the last flatbed car in the convoy 3 is roughly close to the front of the rail transport car. Then drive the track laying car 1 to the point where the supporting beam 6 is close to the front of the rail transport car. At the same time, operate the rail conveying device on the front of the rail transport car to send the end of the rail to be laid forward and into the traction buckle 8. Then install the axle pin 9 at the bottom of the traction buckle 8 and install the limiting wedge at the position where the end of the rail extends out of the traction buckle 8 to form a traction connection.

[0045] Combined with appendix Figure 1 Keeping the positions of the tractor 2 and the flatbed 3 unchanged, drive the track laying vehicle 1 forward to pull the rail to be laid out from the rail transport vehicle. After the track laying vehicle 1 has traveled a certain distance, the rail bends downward due to its own weight and finally falls on the electric telescopic boom 14. As the track laying vehicle 1 continues to move, the rail is completely pulled out from the rail transport vehicle. Its end is pulled by the track laying vehicle 1, and the rest is stuck between the positioning rollers 17 on the electric telescopic boom 14 and supported by the idler roller 18.

[0046] Combined with appendix Figure 7 Simultaneously, the motor 20 and the electric telescopic arm 14 are controlled so that the rail cantilever 5 swings above the adjacent line while the electric telescopic arm 14 extends above the adjacent line at approximately the same speed, moving the rail to be laid above the adjacent line in a manner that does not cause significant bending.

[0047] Combined with appendix Figure 8 Appendix Figure 9 Appendix Figure 10 and attached Figure 11 On-site staff flipped the tilting bracket 16 on the last electric telescopic boom 14 in the flatbed 3 queue to both sides, so that the positioning roller 17 could not contact the rail. Then, they controlled the electric telescopic boom 14 on the last flatbed 3 to slowly retract. After the end of the rail lost the support of the electric telescopic boom 14, it fell into the track groove of the concrete sleeper, thus realizing the end of the rail entering the groove.

[0048] In the above steps, since the top surface of idler roller 15 is lower than the top surface of idler roller 2 18, after the electric telescopic arm 14 retracts, the rail near the outer side leaves idler roller 2 18 and is supported by idler roller 15. The rotation of idler roller 15 reduces the resistance between the electric telescopic arm 14 and the rail. As the electric telescopic arm 14 continues to retract, the rail near the inner side will contact the outer idler roller 2 18. Since idler roller 2 18 has a spindle-shaped profile, there will be no jamming between idler roller 2 18 and the rail, only a brief increase in resistance. In order to reduce the impact when the rail enters the groove, temporary pads can be placed in the concrete sleeper groove before the electric telescopic arm 14 retracts.

[0049] Combined with appendix Figure 12After the electric telescopic boom 14 on the last flatbed trolley 3 is fully retracted and the end of the rail is inserted into the groove, the on-site staff removes the limiting wedge block installed at the front end of the rail. Then, the track laying vehicle 1 and the traction vehicle 2 are simultaneously controlled to move forward. Since the sliding friction between the concrete sleeper groove and the rail is much greater than the rolling friction between the rail and the idler roller 18, the rail remains in the concrete sleeper groove while the track laying vehicle 1 and the traction vehicle 2 move forward, achieving complete insertion of the rail into the groove. After insertion, the on-site staff perform preliminary installation of fasteners and stress dissipation operations.

[0050] The present invention and its embodiments have been described above. This description is not restrictive, and the actual structure is not limited thereto. In conclusion, if those skilled in the art, inspired by this description, design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the scope of protection of this invention.

Claims

1. A track-laying equipment capable of single / double track switching, comprising a track-laying vehicle (1), a tractor (2), and flatbed vehicles (3), wherein the tractor (2) pulls multiple flatbed vehicles (3) across the main line concrete sleepers and travels in front of the track transport vehicle, and the track-laying vehicle (1) travels across the tractor (2) and the flatbed vehicles (3), characterized in that: The track-laying vehicle (1) is equipped with an electrically rotating rail-shifting cantilever (5), and a supporting beam (6) is provided at the end of the rail-shifting cantilever (5). The supporting beam (6) pulls the end of the track. The flatbed vehicle (3) is equipped with an electrically telescopic arm (14), which supports the bottom of the rail. When laying a single track, the rail-shifting cantilever (5) is parallel to the laying direction. The traction vehicle (2) and the flatbed vehicle (3) do not participate in the track laying. The track-laying vehicle (1) pulls the track from the track transport vehicle and lays it on the main line. When laying a double track, the track-laying vehicle (1) pulls the track from the track transport vehicle and places it on the electrically telescopic arm (14). The rail-shifting cantilever (5) rotates and extends the electrically telescopic arm (14) to transfer the rail to the adjacent sleeper for laying.

2. The track-laying equipment with single / double track switching capability according to claim 1, characterized in that: The track-laying vehicle (1) is equipped with a support platform (4), and the root of the rail cantilever (5) is rotatably connected to the top of the support platform (4). The support platform (4) is equipped with a motor (20) that drives the rail cantilever (5) to rotate.

3. The track-laying equipment with single / double track variation according to claim 2, characterized in that: The cantilever arm (5) of the directional rail is provided with parallel tie rods (7) on both sides. One end of the parallel tie rod (7) is rotatably connected to the bearing platform (4), and the other end is rotatably connected to the supporting beam (6).

4. The track-laying equipment with single / double track switching capability according to claim 1, characterized in that: The bottom sides of the supporting beam (6) are provided with traction buckles (8) that cooperate with the rail limiting wedges, and the bottom of the traction buckle (8) is provided with a detachable axle pin (9).

5. The track-laying equipment with single / double track switching capability according to claim 1, characterized in that: The track-laying vehicle (1) has a U-shaped body, and both sides of the inside of the track-laying vehicle (1) are provided with limiting track grooves (10).

6. A track-laying equipment with single / double track variation according to claim 5, characterized in that: The flatbed (3) is provided with a limiting beam (11) in the middle. The upper ends of the limiting beam (11) are provided with limiting rollers (12) that fit into the limiting track groove (10). The lower ends of the limiting beam (11) are provided with limiting rollers (13) that fit into the sides of the concrete sleepers.

7. The track-laying equipment with single / double track switching capability according to claim 1, characterized in that: The electric telescopic arm (14) is provided with two pairs of flipping brackets (16) at the top. Each pair of flipping brackets (16) is set on both sides of the rail. The top of the electric telescopic arm (14) is provided with a spindle-shaped idler roller (18) in the middle of each pair of flipping brackets (16) to support the bottom of the rail. The flipping bracket (16) is provided with a positioning roller (17) that fits against the side of the rail. The rotation axis of the positioning roller (17) and the idler roller (18) is perpendicular to the traction movement direction of the rail.

8. A track-laying equipment with single / double track variation according to claim 7, characterized in that: The top surface of the electric telescopic boom (14) is provided with multiple rollers (15), the rotation axis of rollers (15) is parallel to the traction movement direction of the rail, and the top surface of rollers (15) is lower than the top surface of rollers (18).

9. A track-laying equipment with single / double track switching capability according to claim 7, characterized in that: The flip bracket (16) can be flipped to both sides of the electric telescopic arm (14), and both sides of the electric telescopic arm (14) are provided with limiting brackets (19) that cooperate with the flip bracket (16).

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