Steel pipe transportation lane changing track device

Abstract

The utility model discloses a steel pipe transportation lane changing track device which comprises a variable track and a transportation plate trailer, track wheels are arranged at the bottom of the transportation plate trailer, the transportation plate trailer is arranged on the variable track through the track wheels, a rotary table is rotationally installed on the upper surface of the transportation plate trailer, and a locking component is arranged on the side wall between the transportation plate trailer and the rotary table. A pipeline fixing device is arranged on the upper surface of the turntable. According to the utility model, the variable track is provided with the two transportation plate trailers for long pipeline transportation, so that the problem of difficulty in steering during long pipeline transportation is solved, steel pipe track turning transportation in the tunnel is realized on the premise of reducing technical expanding excavation of the tunnel as much as possible, the pipeline is fixed more stably, and the transportation is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steel pipe transportation lane changing track device belongs to cavern construction equipment technical field. BACKGROUND

[0002] In the water conservancy project construction process, often need to install the connection large diameter steel pipe in water conservancy tunnel, its steel pipe has long length, pipe diameter thick, heavy characteristics. The prior art often adopts the flat car to carry out track transportation, in the transportation, steel pipe transportation generally first lays the track, then arranges the steel pipe transport car on the track, steel pipe transportation to the hole and fixes the steel pipe on the transport car, slowly transports the steel pipe to the designated position and then carries out the pipe installation. However, the prior art has the problem that the diversion is difficult when transporting in the diversion tunnel and the connecting hole, and the circular pipe is not easy to fix, and is easy to fall off during transportation, causing pipe loss and personnel injury, therefore, we propose a steel pipe transportation lane changing track device. SUMMARY

[0003] The utility model discloses a steel pipe transportation lane changing track device adopts the variable track to equip the flat car transportation mode, and the steering is convenient, can transport the long pipe through the cooperation of two flat cars, solves the problem of difficult steering, and the pipe is fixed stably, and the operation is convenient.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme: a steel pipe transportation lane changing track device, including variable track and transport flat car, the bottom of transport flat car is provided with track wheel, the transport flat car is placed on the variable track through track wheel, the upper surface of transport flat car is rotatably installed with rotary table, the side wall between transport flat car and rotary table is provided with locking part, the upper surface of rotary table is provided with pipe fixing device, and a plurality of fixing devices can be arranged on the transport flat car, and the pipe to be transported is loaded and fixed through the pipe fixing device and transported, when transporting the long pipe, can equip two transport flat cars, fix the long pipe both ends on the two transport flat cars through the pipe fixing device, open the locking part and make the rotary table rotatable, solve the difficult problem of difficult steering when transporting the long pipe.

[0005] The variable track of the aforementioned steel pipe transportation variable track device comprises straight basic tracks and curved basic tracks, the inner sides of the straight basic tracks and the curved basic tracks are respectively provided with first points and second points, the other end of the first point is connected with a guide curve track, the guide curve track is connected with a fork center, one end of the second point is connected with a straight track, the straight track is connected with the fork center, the inner sides of the straight basic tracks and the curved basic tracks are provided with guard rails, and the guard rails are located at positions parallel to the fork center, the tail ends of the guide curve track and the straight track are provided with wing tracks parallel to the fork center, the first point and the second point are connected with a switch machine, and the switch machine is controlled to realize variable track turning of the transportation plate car on the variable track and realize in-hole steel pipe track turning transportation.

[0006] The aforementioned steel pipe transportation variable track device is provided with a concrete pavement and / or a cushion layer at the bottom of the variable track, so as to improve the stability of the variable track.

[0007] The aforementioned steel pipe transportation variable track device is provided with two vertical columns arranged in parallel to each other, a bottom fixing member and a top fixing member which can slide in the vertical direction are arranged between the two vertical columns, the bottom fixing member is arranged below the top fixing member, the upper surface of the bottom fixing member and the lower surface of the top fixing member are both provided with semicircular grooves, the semicircular grooves of the bottom fixing member and the top fixing member are in one-to-one correspondence and are connected to form a circle, and the pipeline is arranged in the circular fixing groove formed between the bottom fixing member and the top fixing member during transportation.

[0008] The aforementioned steel pipe transportation variable track device is provided with at least one middle fixing member which can slide in the vertical direction and is arranged between the bottom fixing member and the top fixing member, and the upper and lower surfaces of the middle fixing member are both provided with semicircular grooves corresponding to the bottom fixing member and the top fixing member, so that the number of pipelines transported at one time can be increased by adding multiple middle fixing members when the number of pipelines to be transported is large.

[0009] The aforementioned steel pipe transportation variable track device is provided with a sliding groove in the vertical direction at the inner side of each of the two vertical columns, and T-shaped sliding blocks are arranged on both sides of the bottom fixing member, the top fixing member and the middle fixing member, the T-shaped sliding blocks are slidingly arranged in the sliding groove, so that the bottom fixing member, the top fixing member and the middle fixing member can slide up and down and can be disassembled by sliding upward.

[0010] The aforementioned steel pipe transportation variable track device is provided with hydraulic telescopic devices arranged on both sides of the upper surface of the rotary table, one end of a connecting rod arranged at the top end of the hydraulic telescopic devices, and the other end of the connecting rod is detachably connected with the top fixing member, the top fixing member is connected with the connecting rod after the pipeline is fully loaded during transportation, the hydraulic telescopic devices are contracted downward, the top fixing member is pressed downward, and the pipeline is fixed and stabilized.

[0011] The steel pipe transportation lane-changing track device has the anti-skid pads arranged in the semicircular grooves of the bottom fixing member, the top fixing member and the middle fixing member, and the stability of pipe fixing is further increased.

[0012] The steel pipe transportation lane-changing track device has the locking member comprising the upper ear plate and the lower ear plate, the lower ear plate is arranged on the side wall of the transportation plate car, the upper ear plate is arranged on the side wall of the rotating table, the upper ear plate and the lower ear plate are overlapped and fixed through the bolts, the opening and locking of the locking member are realized by disassembling and assembling the bolts between the upper ear plate and the lower ear plate, when the rotating table is opened, the rotating table can be rotated, and when the rotating table is locked, the rotating table is fixed.

[0013] The steel pipe transportation lane-changing track device has the convex platform arranged in the middle of the upper surface of the transportation plate car, the center groove arranged in the center of the bottom surface of the rotating table, the convex platform inserted into the center groove, and the plane ring bearing arranged between the top surface of the center groove and the upper surface of the convex platform, so that the rotating table can be horizontally rotated along the convex platform through the plane ring bearing.

[0014] Compared with the prior art, the steel pipe transportation lane-changing track device has at least the following beneficial effects:

[0015] (1) The steel pipe transportation lane-changing track device uses the variable track to realize the turning transportation of the steel pipe track in the hole under the premise of reducing the technical excavation of the hole as much as possible.

[0016] (2) The steel pipe transportation lane-changing track device loads and fixes the pipeline to be transported through the pipeline fixing device, so that the pipeline is fixed more stably, and the transportation is safer.

[0017] (3) The steel pipe transportation lane-changing track device solves the problem of difficult turning of long pipeline transportation by equipping two transportation plate cars for long pipeline transportation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a plane schematic view of the steel pipe transportation lane-changing track device;

[0019] Figure 2 is an elevation structural schematic view of the transportation plate car of the steel pipe transportation lane-changing track device;

[0020] Figure 3 is an elevation structural schematic view of the pipeline fixing device of the steel pipe transportation lane-changing track device;

[0021] Figure 4 is a structural top view of the fixing device of the steel pipe transportation lane-changing track device;

[0022] Figure 5 is a schematic view of the rotating table installation structure of the steel pipe transportation lane-changing track device.

[0023] Fig. 1: variable track, 2: transport plate car, 21: boss, 22: flat ring bearing, 3: track wheel, 4: rotary table, 41: center groove, 5: locking component, 51: upper ear plate, 52: lower ear plate, 6: fixing device, 61: stand, 62: bottom fixing part, 63: top fixing part, 64: middle fixing part, 65: sliding groove, 66: T-shaped sliding block, 67: hydraulic telescopic device, 68: connecting rod, 7: straight basic track, 8: curved basic track, 9: second point rail, 10: fork center, 11: straight rail, 12: guard rail, 13: wing rail, 14: switch machine, 15: first point rail.

[0024] The utility model will be further explained in connection with the drawings and specific embodiments. Specific embodiments

[0025] The utility model discloses an embodiment 1: a steel pipe transport variable track device, including variable track 1 and transport plate car 2, transport plate car 2 bottom is provided with track wheel 3, and transport plate car 2 is placed on variable track 1 through track wheel 3, and the upper surface of transport plate car 2 is rotatably installed with rotary table 4, and locking component 5 is arranged on the lateral wall between transport plate car 2 and rotary table 4, and pipe fixing device 6 is arranged on the upper surface of rotary table 4, and multiple fixing devices 6 can be arranged on transport plate car 2, and the pipe to be transported is loaded and fixed through pipe fixing device 6, and transport is carried out, when long pipe transport is carried out, can equip two transport plate cars 2, and the two ends of long pipe are fixed on the two transport plate cars 2 through pipe fixing device 6, and locking component 5 is opened to make rotary table 4 rotatable, and the difficult problem of steering when long pipe transport is solved.

[0026] The utility model discloses an embodiment 2: a steel pipe transport variable track device, including variable track 1 and transport plate car 2, variable track 1 bottom is provided with concrete pavement and / or cushion layer, improves the stability of variable track 1, and transport plate car 2 bottom is provided with track wheel 3, and transport plate car 2 is placed on variable track 1 through track wheel 3, and the upper surface of transport plate car 2 is rotatably installed with rotary table 4, and locking component 5 is arranged on the lateral wall between transport plate car 2 and rotary table 4, and pipe fixing device 6 is arranged on the upper surface of rotary table 4, and multiple fixing devices 6 can be arranged on transport plate car 2, and the pipe to be transported is loaded and fixed through pipe fixing device 6, and transport is carried out, when long pipe transport is carried out, can equip two transport plate cars 2, and the two ends of long pipe are fixed on the two transport plate cars 2 through pipe fixing device 6, and locking component 5 is opened to make rotary table 4 rotatable, and the difficult problem of steering when long pipe transport is solved.

[0027] Wherein, the variable track 1 includes straight basic track 7 and curved basic track 8, and the inner side of straight basic track 7 and curved basic track 8 is respectively provided with first point rail 15 and second point rail 9, the other end of first point rail 15 is connected with guide curve track, the guide curve track is connected with fork center 10, one end of second point rail 9 is connected with straight track 11, and straight track 11 is connected with fork center 10, the inner side of straight basic track 7 and curved basic track 8 is provided with guard rail 12, and the guard rail 12 is located at the parallel position of fork center 10, the tail end of guide curve track and straight track 11 is provided with wing rail 13 which is parallel with fork center 10, first point rail 15 and second point rail 9 are connected with switch machine 14, and the switch machine 14 is controlled to realize the variable track turning of transport platform car 2 on variable track 1 and realize the turning transportation of steel pipe track in hole.

[0028] The utility model discloses an embodiment 3: a steel pipe transportation lane changing track device, including variable track 1 and transport platform car 2, the bottom of variable track 1 is provided with concrete pavement and / or cushion, improves variable track 1 stability, and the bottom of transport platform car 2 is provided with track wheel 3, and transport platform car 2 is placed on variable track 1 through track wheel 3, and the upper surface of transport platform car 2 is rotatably installed with rotary table 4, and the side wall between transport platform car 2 and rotary table 4 is provided with locking part 5, and the upper surface of rotary table 4 is provided with pipeline fixing device 6, and a plurality of fixing devices 6 can be arranged on transport platform car 2, and the pipeline to be transported is loaded and fixed through pipeline fixing device 6, and is transported, when long pipeline transportation is carried out, can equip two transport platform cars 2, and the two ends of long pipeline are fixed on the two transport platform cars 2 through pipeline fixing device 6, and locking part 5 is opened to make rotary table 4 rotatable, and the difficult problem of turning difficulty when long pipeline transportation is solved.

[0029] Wherein, the variable track 1 includes straight basic track 7 and curved basic track 8, and the inner side of straight basic track 7 and curved basic track 8 is respectively provided with first point rail 15 and second point rail 9, the other end of first point rail 15 is connected with guide curve track, the guide curve track is connected with fork center 10, one end of second point rail 9 is connected with straight track 11, and straight track 11 is connected with fork center 10, the inner side of straight basic track 7 and curved basic track 8 is provided with guard rail 12, and the guard rail 12 is located at the parallel position of fork center 10, the tail end of guide curve track and straight track 11 is provided with wing rail 13 which is parallel with fork center 10, first point rail 15 and second point rail 9 are connected with switch machine 14, and the switch machine 14 is controlled to realize the variable track turning of transport platform car 2 on variable track 1 and realize the turning transportation of steel pipe track in hole.

[0030] The pipeline fixing device 6 comprises two vertical columns 61 arranged in parallel with each other, a bottom fixing part 62 and a top fixing part 63 which are vertically slidable and are arranged between the two vertical columns 61, and the bottom fixing part 62 is arranged below the top fixing part 63, the upper surface of the bottom fixing part 62 and the lower surface of the top fixing part 63 are both provided with semicircular grooves, the semicircular grooves of the bottom fixing part 62 and the top fixing part 63 are in one-to-one correspondence and are connected to form a circle; the inner sides of the two vertical columns 61 are both provided with a sliding groove 65 in the vertical direction, and the two sides of the bottom fixing part 62 and the top fixing part 63 are both provided with a T-shaped sliding block 66 which is slidingly arranged in the sliding groove 65, so that the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64 can all slide up and down and can be disassembled by sliding upwards; the upper surface of the turntable 4 is provided with a hydraulic telescopic device 67 on both sides, one end of the hydraulic telescopic device 67 is provided with a connecting rod 68, the other end of the connecting rod 68 is detachably connected with the top fixing part 63, during transportation, the pipeline is arranged in the circular fixing groove formed between the bottom fixing part 62 and the top fixing part 63, after the pipeline is loaded, the top fixing part 63 is connected with the connecting rod 68, the hydraulic telescopic device 67 is contracted downwards, the top fixing part 63 is pressed downwards, and the pipeline is fixed stably.

[0031] The utility model discloses an embodiment 4: a kind of steel pipe transportation lane-changing track device, variable track 1 is set with concrete pavement and / or cushion in the bottom, improve the stability of variable track 1, track wheel 3 is arranged in the bottom of transport plate car 2, transport plate car 2 is placed on variable track 1 by track wheel 3, rotatingly installed with turntable 4 on the upper surface of transport plate car 2, locking component 5 is arranged on the lateral wall between transport plate car 2 and turntable 4, pipeline fixing device 6 is arranged on the upper surface of turntable 4, and multiple fixing devices 6 can be arranged on transport plate car 2, and the pipeline to be transported is loaded and fixed by pipeline fixing device 6, for transportation, when long pipeline transportation is carried out, two transport plate cars 2 can be equipped, and the two ends of long pipeline are fixed on the two transport plate cars 2 by pipeline fixing device 6, locking component 5 is opened to make turntable 4 rotatable, and the difficulty problem of steering when long pipeline is transported is solved.

[0032] Wherein, the variable track 1 includes straight basic track 7 and curved basic track 8, the inner side of the straight basic track 7 and the curved basic track 8 is respectively provided with the first point rail 15 and the second point rail 9, the other end of the first point rail 15 is connected with the guide curve track, the guide curve track is connected with the fork center 10, the second point rail 9 is connected with one end of the straight track 11, the straight track 11 is connected with the fork center 10, the inner side of the straight basic track 7 and the curved basic track 8 is provided with the guard rail 12, and the guard rail 12 is at the parallel position with the fork center 10, the tail end of the guide curve track and the straight track 11 is provided with the wing rail 13 which is parallel with the fork center 10, the first point rail 15 and the second point rail 9 are connected with the switch machine 14, the switch machine 14 is controlled to realize the variable track turning of the transport plate car 2 on the variable track 1, and realizes the turning transportation of the steel pipe track in the hole.

[0033] The pipeline fixing device 6 includes two vertical columns 61 which are parallel to each other, a bottom fixing part 62 and a top fixing part 63 which are vertically slidable and are installed between the two vertical columns 61, the bottom fixing part 62 is below the top fixing part 63, the upper surface of the bottom fixing part 62 and the lower surface of the top fixing part 63 are both provided with semicircular grooves, the semicircular grooves of the bottom fixing part 62 and the top fixing part 63 are corresponding and are connected to form a circle; at least one middle fixing part 64 which is vertically slidable is also installed between the two vertical columns 61, the middle fixing part 64 is between the bottom fixing part 62 and the top fixing part 63, and the upper and lower surfaces of the middle fixing part 64 are both provided with semicircular grooves corresponding to the bottom fixing part 62 and the top fixing part 63, when the number of pipelines to be transported is large, the number of pipelines to be transported at one time can be increased by adding multiple middle fixing parts 64; sliding grooves 65 are provided in the vertical direction on the inner sides of the two vertical columns 61, T-shaped sliding blocks 66 are provided on the two sides of the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64, the T-shaped sliding blocks 66 are slidingly installed in the sliding grooves 65, so that the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64 can all slide up and down and can be disassembled by sliding upwards; hydraulic telescopic devices 67 are provided on the two sides of the upper surface of the rotating platform 4, one end of a connecting rod 68 provided at the top end of the hydraulic telescopic device 67 is provided, the other end of the connecting rod 68 is detachably connected with the top fixing part 63, during transportation, the pipelines are installed in the circular fixing groove formed between the bottom fixing part 62, the middle fixing part 64 and the top fixing part 63, after the pipelines are loaded, the top fixing part 63 is connected with the connecting rod 68, the hydraulic telescopic device 67 is contracted downwards, the top fixing part 63 is pressed downwards, and the pipelines are fixed stably.

[0034] Specifically, antiskid pads are provided in the semicircular grooves of the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64, further increasing the stability of the pipeline fixation.

[0035] The utility model discloses an embodiment 5: a kind of steel pipe transportation lane changing track device, including variable track 1 and transport plate car 2, concrete pavement and / or cushion are set in the bottom of variable track 1, improve the stability of variable track 1, track wheel 3 is provided in the bottom of transport plate car 2, transport plate car 2 is placed on variable track 1 by track wheel 3, the upper surface of transport plate car 2 is rotatably installed with rotary table 4, locking component 5 is arranged on the side wall between transport plate car 2 and rotary table 4, pipeline fixing device 6 is provided on the upper surface of rotary table 4, multiple fixing devices 6 can be on transport plate car 2, load and fix the pipeline to be transported by pipeline fixing device 6, transport, when long pipeline transportation is carried out, can be equipped with two transport plate cars 2, long pipeline both ends are fixed on two transport plate cars 2 by pipeline fixing device 6, open locking component 5 to make rotary table 4 rotatable, the difficult problem of steering when long pipeline transportation is solved.

[0036] Among them, variable track 1 includes straight basic track 7 and curve basic track 8, and the inner side of straight basic track 7 and curve basic track 8 is respectively provided with first pointed rail 15 and second pointed rail 9, one end of first pointed rail 15 is connected with guide curve rail, guide curve rail is connected with fork center 10, and one end of second pointed rail 9 is connected with straight rail 11, and straight rail 11 is connected with fork center 10, the inner side of straight basic track 7 and curve basic track 8 is provided with guard rail 12, and the guard rail 12 is at parallel position with fork center 10, the tail end of guide curve rail and straight rail 11 is provided with wing rail 13 which is parallel with fork center 10, first pointed rail 15 and second pointed rail 9 are connected with switch machine 14, and the lane changing of transport plate car 2 on variable track 1 is realized by the control of switch machine 14, and the track turning of hole steel pipe is realized.

[0037] The pipeline fixing device 6 comprises two mutually parallel erected columns 61, a bottom fixing part 62 and a top fixing part 63 are installed between the two columns 61 and can slide in the vertical direction, the bottom fixing part 62 is arranged below the top fixing part 63, a semicircular groove is formed on the upper surface of the bottom fixing part 62 and the lower surface of the top fixing part 63, the semicircular grooves of the bottom fixing part 62 and the top fixing part 63 correspond to each other and are connected to form a circle; at least one middle fixing part 64 which can slide in the vertical direction is also installed between the two columns 61, the middle fixing part 64 is arranged between the bottom fixing part 62 and the top fixing part 63, and semicircular grooves corresponding to the bottom fixing part 62 and the top fixing part 63 are formed on the upper and lower surfaces of the middle fixing part 64, when the number of pipelines to be transported is large, the number of pipelines transported at one time can be increased by increasing the number of middle fixing parts 64; a sliding groove 65 is formed on the inner side of each of the two columns 61 in the vertical direction, T-shaped sliding blocks 66 are arranged on both sides of the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64, and the T-shaped sliding blocks 66 are slidingly installed in the sliding grooves 65, so that the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64 can slide up and down and can be disassembled by sliding upward; hydraulic telescopic devices 67 are arranged on both sides of the upper surface of the turntable 4, one end of a connecting rod 68 is arranged at the top end of each hydraulic telescopic device 67, and the other end of the connecting rod 68 is detachably connected with the top fixing part 63, during transportation, the pipelines are arranged in the circular fixing groove formed between the bottom fixing part 62, the middle fixing part 64 and the top fixing part 63, after the pipelines are loaded, the top fixing part 63 is connected with the connecting rod 68, the hydraulic telescopic devices 67 are retracted downward, the top fixing part 63 is pressed downward, and the pipelines are fixed stably.

[0038] The locking part 5 comprises an upper lug plate 51 and a lower lug plate 52, the lower lug plate 52 is arranged on the side wall of the transport plate vehicle 2, the upper lug plate 51 is arranged on the side wall of the turntable 4, the upper lug plate 51 and the lower lug plate 52 are arranged in the same position and are fixed by bolts, the bolts between the upper lug plate 51 and the lower lug plate 52 are disassembled or assembled to open or lock the locking part 5, a convex boss 21 is arranged in the middle of the upper surface of the transport plate vehicle 2, a central groove 41 is formed in the center of the bottom surface of the turntable 4, the convex boss 21 is inserted into the central groove 41, and a planar ring-shaped bearing 22 is arranged between the top surface of the central groove 41 and the upper surface of the convex boss 21, so that the turntable 4 can rotate horizontally along the convex boss 21 through the planar ring-shaped bearing 22; when the turntable 4 is opened, the turntable 4 can rotate horizontally along the convex boss 21 through the planar ring-shaped bearing 22, when the turntable 4 is locked, the position of the turntable 4 is fixed, and the turntable 4 is fixedly connected with the transport plate vehicle 2.

[0039] Specifically, anti-skid pads are arranged in the semicircular grooves of the bottom fixing part 62, the top fixing part 63 and the middle fixing part 64, which further increases the stability of the pipeline fixing.

[0040] The utility model discloses a kind of working principles of an embodiment of the utility model: the utility model is in the use process, when transporting short pipeline, multiple pipeline fixing devices 6 on transport plate car 2 fix pipeline, pipeline is clamped in the recess between bottom fixing part 62 and top fixing part 63, down shrink by hydraulic telescopic device 67, make top fixing part 63 press down tightly, make pipeline fixed stable, transport;When long pipeline is transported, long pipeline both ends are fixed on two transport plate cars 2 by pipeline fixing device 6, simultaneously open locking component 5 to make revolving stage 4 rotatable, transport, solve the difficult problem of steering difficulty when long pipeline is transported;When pipeline diameter is smaller quantity is more, the quantity of pipeline of once transportation can be improved by increasing multiple middle fixing part 64;When changing track turning, first switch rail 15 and second switch rail 9 are rotated by switch machine 14 control, realize that transport plate car 2 changes track steering on variable track 1, realize hole steel pipe track turning transport.

Claims

1. A steel pipe transport lane change track device, characterized in that: The invention comprises a variable track (1) and a transporting trolley (2), wherein the bottom of the transporting trolley (2) is provided with a track wheel (3), the transporting trolley (2) is placed on the variable track (1) via the track wheel (3), a turntable (4) is rotatably mounted on the upper surface of the transporting trolley (2), a locking component (5) is provided on the side wall between the transporting trolley (2) and the turntable (4), and a pipeline fixing device (6) is provided on the upper surface of the turntable (4).

2. A steel pipe transport lane changing track device according to claim 1, characterized in that: The variable track (1) comprises a straight basic track (7) and a curved basic track (8), wherein a first point rail (15) and a second point rail (9) are respectively provided on one inner side of the straight basic track (7) and the curved basic track (8), wherein the other end of the first point rail (15) is connected to a guide curve rail, wherein the guide curve rail is connected to a fork core (10), and the second point rail (9) is connected to one end of a straight rail (11), wherein the straight rail (11) is connected to the fork core (10), wherein guard rails (12) are provided on the inner sides of the straight basic track (7) and the curved basic track (8), and wherein the guard rails (12) are both located in a position parallel to the fork core (10), wherein the tail ends of the guide curve rail and the straight rail (11) are both provided with wing rails (13) on the side parallel to the fork core (10), and wherein the first point rail (15) and the second point rail (9) are connected to a switch machine (14).

3. A steel pipe transport lane changing track device according to claim 1 or 2, characterized in that: The bottom of the variable track (1) is provided with a concrete pavement and / or a cushion layer.

4. The steel pipe transport lane changing track device according to claim 1, characterized in that: The pipe fixing device (6) comprises two columns (61) arranged parallel to each other, a bottom fixing member (62) and a top fixing member (63) which can slide in the vertical direction are installed between the two columns (61), and the bottom fixing member (62) is placed below the top fixing member (63), and the upper surface of the bottom fixing member (62) and the lower surface of the top fixing member (63) are both provided with semicircular grooves, and the semicircular grooves of the bottom fixing member (62) and the top fixing member (63) correspond to each other and are connected to form a circle.

5. The steel pipe transportation lane changing track device according to claim 4, characterized in that: At least one middle fixing member (64) that can slide in the vertical direction is installed between the two upright posts (61). The middle fixing member (64) is placed between the bottom fixing member (62) and the top fixing member (63), and the upper and lower surfaces of the middle fixing member (64) are both provided with semicircular grooves corresponding to the bottom fixing member (62) and the top fixing member (63).

6. The steel pipe transport lane changing track device according to claim 5, characterized in that: A sliding groove (65) is provided on the inner side of the two uprights (61) in the vertical direction, and T-shaped sliders (66) are provided on both sides of the bottom fixing member (62), the top fixing member (63) and the middle fixing member (64), and the T-shaped sliders (66) are slidably installed in the sliding groove (65).

7. The steel pipe transport lane changing track device according to claim 6, characterized in that: Hydraulic telescopic devices (67) are provided on both sides of the upper surface of the turntable (4), one end of a connecting rod (68) is provided at the top of the hydraulic telescopic device (67), and the other end of the connecting rod (68) is detachably connected to the top fixing member (63).

8. The steel pipe transport lane changing track device according to claim 7, characterized in that: Anti-slip pads are provided in the semicircular grooves of the bottom fixing piece (62), the top fixing piece (63) and the middle fixing piece (64).

9. The steel pipe transportation lane changing track device according to claim 1, characterized in that: The locking component (5) comprises an upper ear plate (51) and a lower ear plate (52); the lower ear plate (52) is arranged on the side wall of the transport cart (2); the upper ear plate (51) is arranged on the side wall of the turntable (4); the upper ear plate (51) and the lower ear plate (52) are overlapped and fixed by bolt connection.

10. The steel pipe transportation lane changing track device according to claim 1, characterized in that: A boss (21) is provided in the middle of the upper surface of the transport cart (2), a center groove (41) is provided at the center of the bottom surface of the turntable (4), the boss (21) is inserted into the center groove (41), and a plane annular bearing (22) is provided between the top surface of the center groove (41) and the upper surface of the boss (21).

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