CN219383688U - Large-caliber pipe die storage device - Google Patents

Abstract

The utility model discloses a large-caliber pipe die storage device. The device comprises a fixed bracket, a movable bracket and a transport vehicle. The auxiliary car lifting mechanism for the main car of the transport car is used for suspending the auxiliary car, and the auxiliary car lifting mechanism can realize the lifting of the auxiliary car and the main car. The main car walks on the longitudinal track, the auxiliary car walks on the transverse track, and the transport car can realize the direction conversion of the vertical track. The movable support can be a rotary support or a trolley support, and can move into space for the movement of the transport vehicle. According to the utility model, the large-caliber pipe die can be stored outside a sub-span or a workshop or in a workshop in a layered manner by matching the transport vehicle with the movable support, so that the problems of occupation and storage of the large-caliber pipe die are solved.

Description

Large-caliber pipe die storage device

Technical Field

The utility model is applied to the field of centrifugal ductile iron pipe manufacturing, relates to pipe die storage, and particularly relates to a storage device for a large-caliber pipe die.

Background

The spheroidal iron pipes are produced by adopting a centrifugal casting process, and because of more product specifications, the spheroidal iron pipes are limited by production rhythm and centrifugal equipment, and generally, more pipe dies need to be stored. In order to ensure production, besides storing qualified pipe dies, part of the pipe dies need to be maintained. The pipe die is replaced to be necessary for production preparation, and for small-caliber pipe dies, such as DN600 or below, the pipe dies are stored on a pipe die rack in a concentrated manner, and for large-caliber pipe dies, particularly for large-caliber cast pipes with DN800 or above, the pipe dies are large in size and heavy in weight, and overhead cranes are needed to lift, so that the pipe dies can be placed in workshops only, and the occupied workshop area is large. In order to save the workshop area, the arrangement of production equipment is used, the placement and the taking of the large-caliber pipe die are necessarily required, the crown block cannot be used, a special storage device is required to be designed, the large-caliber pipe die is transported to a span or outside a workshop, or the workshop space is divided into an upper layer storage pipe die and a lower layer storage pipe die, so that the occupied area for storing the pipe die is reduced.

Patent CN112389978A discloses a pipe die storing and taking device, and the pipe die is transversely deposited on the storage rack, is equipped with the multilayer in the storage rack and deposits the district, is equipped with a plurality of supporting mechanisms that are used for adjusting the pipe die height in depositing the district, and supporting mechanism is scalable. The carrier roller is arranged on the taking and placing vehicle, and the pipe die is inclined and slides into the carrier roller on the taking and placing vehicle by utilizing the extension and contraction of the supporting mechanism. The device does not use a crane mechanism and can only be used for storing small-caliber pipe dies. Patent CN216686149U discloses a pipe die storing and taking device, which comprises a pipe die placing rack and a taking and placing vehicle. The driving vehicle can move on the ground, the tractor for storing and taking the pipe die is arranged on the lifting frame and can move up and down, and the pipe drawing pliers on the tractor can realize the forward and backward movement of the pipe die and the tractor. Thus, the space three-dimensional movement is realized through the driving vehicle, the tractor and the lifting frame, and the storage and the taking of the pipe die are realized. The storage device is similar to CN112389978A, does not use a crown block or a lifting appliance, but is only suitable for storing small-caliber pipe dies. Patent CN211003397U discloses a vertical pipe die strorage device, and the pipe die is vertical to be inserted in holding the pipe, and hoisting mechanism hangs it out, and rotation supporting mechanism turns into transversely with the pipe die from vertical, has both practiced thrift the area that the pipe die was deposited, also can not influence the ovality of pipe die. The device is suitable for storing large-caliber pipe dies, and has the defects that besides a lifting mechanism is adopted, the civil engineering workload is large, and a pit with the length not less than that of the pipe die is required to be dug under the ground. Patent CN207710764U gives a pipe die storage rack, and the pipe die transversely prevents on the support frame, and the support frame is fixed and is crisscross distribution from top to bottom on the stand, and the up end is equipped with the arc recess that prevents pipe die rolling, and the support frame includes the bracing piece and sets up the pin at the bracing piece outer end. The structure is simple, but the pipe die is stored and taken not only by a lifting mechanism, but also by close matching of ground personnel, and the impact on the supporting frame is large when the pipe die is placed, so that the stability of the supporting frame is poor.

Disclosure of Invention

The utility model solves the technical problems that: the large-caliber pipe die storage device is used for storing or taking pipe dies without crown blocks, and the floor area of a workshop is saved.

The technical scheme adopted by the utility model is as follows: the large-caliber pipe die storage device comprises a fixed bracket, a movable bracket, a transport vehicle, a transverse rail and a longitudinal rail. The transport vehicle comprises a main vehicle, an auxiliary vehicle lifting mechanism and an auxiliary vehicle; the auxiliary car lifting mechanism is arranged on the bottom surface of a main roof plate of the main car and comprises a double-output-shaft motor I, a two-way speed reducer I and a worm wheel lifter I which are connected through a rotating shaft and a coupling, and the lifting shaft of the worm wheel lifter I is connected with the auxiliary car. When the double-output shaft motor I works, the lifting of the auxiliary vehicle can be realized. The main vehicle power pair of the main vehicle drives the transport vehicle to walk on the longitudinal rail, and the auxiliary vehicle power pair of the auxiliary vehicle drives the transport vehicle to walk on the transverse rail; the movable support can move to a position for transverse movement of the transport vehicle.

Further, the transport vehicle further comprises a pipe die platform and a platform lifting mechanism; a platform lifting mechanism is arranged on the main roof board and supports the pipe die platform. The platform lifting mechanism is basically consistent with the auxiliary vehicle lifting mechanism and comprises a double-output-shaft motor II, a bidirectional speed reducer II and a worm wheel lifter II which are connected through a rotating shaft and a coupling. And the lifting shaft of the worm gear lifter II is connected with the pipe die platform. The double-output-shaft motor II rotates and can drive the lifting shaft of the worm wheel lifter II to do lifting movement, so that the lifting of the pipe die platform is realized.

Further, a pipe die support is mounted on the main roof or the pipe die platform. The pipe die support comprises a support cushion block, a small shaft and a baffle; the two ends of the strip-shaped supporting cushion block are provided with grooves, the upper ends of the grooves are provided with small shafts, the small shafts are movably connected with the baffle plates, the baffle plates correspond to the grooves, the bottoms of the baffle plates are provided with oblong holes, the oblong holes are matched with the small shafts, and the baffle plates are horizontally or vertically inserted into the grooves in a rotating mode around the small shafts.

Further, the distribution box of the transport vehicle is externally connected with a three-phase plug, three-phase sockets are arranged on each longitudinal rail and each transverse rail, and each three-phase plug cable connected with the three-phase sockets can be unfolded or folded along with the movement of the transport vehicle.

Further, the main car power pair or the auxiliary car power pair is a variable frequency motor or a combination of a motor, a speed reducer, a chain wheel and a chain.

Further, the movable support comprises a rotary support and a hydraulic cylinder, or comprises a rotary support, a supporting rod and a fixing frame; when the rotary support rotates, the upper end of the rotary support is provided with a pipe die, and the rotary support is flush with the transverse rail when rotating. The hydraulic cylinder, or the supporting rod and the fixing frame are used for fixing the rotary support.

Further, the movable support is a trolley support, and the fixed support can be replaced by the trolley support.

The beneficial effects of the utility model are as follows: according to the utility model, the transportation vehicle is matched with the movable support, so that the storage and taking of the pipe die are realized without using an overhead crane. The large-caliber pipe die can be placed outside or on a workshop span without an overhead crane, or a pipe die storage area is arranged in the workshop in a layering manner, so that the problems of occupation and storage of the large-caliber pipe die are solved, and a device foundation is laid for automatic pipe die storage and management in the future.

Drawings

FIG. 1 is a schematic front view of the structure of embodiment 1;

FIG. 2 is a schematic top view of FIG. 1;

FIG. 3 is a schematic view of the A-direction of FIG. 1;

FIG. 4 is a schematic front view of the structure of the transporting vehicle of embodiment 1;

FIG. 5 is a schematic top view of section A-A of FIG. 4;

FIG. 6 is a right side view of FIG. 4;

FIG. 7 is a schematic view of the pipe die support of example 2, and a schematic view of the E-E cross section of FIG. 8;

FIG. 8 is a schematic view of section D-D of FIG. 10;

FIG. 9 is a schematic front view of the structure of a transporting vehicle according to embodiment 2;

FIG. 10 is a schematic view in section B-B of FIG. 9;

FIG. 11 is a right side view of FIG. 9;

fig. 12 is a front view of the structure of embodiment 3;

FIG. 13 is a view in the B direction of FIG. 12;

fig. 14 is a front view of the structure of embodiment 4;

FIG. 15 is a left side view of FIG. 14;

fig. 16 is a front view of the structure of embodiment 5;

wherein: 1-fixed support, 2-transport vehicle, 3-movable support, 4-pipe die, 5-transverse track and 6-longitudinal track;

the device comprises a lifting mechanism of a 21-auxiliary vehicle, a lifting mechanism of a 22-auxiliary vehicle, a 23-main vehicle, a lifting mechanism of a 24-platform, a 25-pipe die platform and a 26-pipe die support;

211-auxiliary vehicle power pair;

221-double-output-shaft motor I, 222-two-way speed reducer I, 223-worm wheel lifter I;

231-main car power pair, 232-main roof panel;

241-double-output shaft motor II, 242-two-way speed reducer II, 243-worm gear lifter II;

261-supporting cushion block, 262-small shaft, 263-baffle plate and 264-groove;

31-rotating support, 32-hydraulic cylinder, 33-supporting rod, 34-fixing frame, 35-trolley support and 36-wood wedge.

Description of the embodiments

For convenience of description, the upper, lower, top and bottom refer to the relative positions of the installation and use states, the transverse direction and the longitudinal direction are the left, right, upper and lower directions of fig. 2, and the I and the II are just distinguishing parts and are not limiting.

Example 1

The structure of the large-caliber pipe die storage device in the embodiment is shown in figures 1-3, and the large-caliber pipe die storage device comprises a fixed bracket 1, a movable bracket 3 and a transport vehicle 2. Fig. 2 does not show the frame structure, but only the relative positions of the wheels, the worm wheel lifter, the double-output shaft motor and the bidirectional speed reducer.

The transport vehicle 2 can move in a direction-changing manner on a transverse rail 5 and a longitudinal rail 6 which are perpendicular to each other, and the structure is shown in fig. 4-6, and comprises a main vehicle 23, an auxiliary vehicle 21, an auxiliary vehicle lifting mechanism 22, a platform lifting mechanism 24 and a pipe die platform 25. The main vehicle power pair 231 of the main vehicle 23 drives the transport vehicle to travel on the longitudinal rail 6 in the longitudinal direction, and the auxiliary vehicle power pair 211 of the auxiliary vehicle 21 drives the transport vehicle to travel on the transverse rail 5 in the transverse direction. The power pair adopts a variable frequency motor and is directly connected with the wheel axle of each wheel. The auxiliary vehicle 21 is suspended below the main vehicle through an auxiliary vehicle lifting mechanism 22, and the auxiliary vehicle lifting mechanism 22 is arranged on the bottom surface of a main roof 232 of the main vehicle 23 and comprises a double-output-shaft motor I221, a bidirectional speed reducer I222 and a worm wheel lifter I223 which are connected through a rotating shaft and a coupling. The double-output-shaft motor I221 rotates and drives the lifting shaft of the worm wheel lifter I223 to do lifting movement through the rotating shaft and the coupler, so that the lifting of the auxiliary vehicle 21 is realized. The lifting shaft of the worm wheel lifter I223 is fixedly connected with the auxiliary vehicle, and the lifting shaft only moves in a lifting way and does not rotate. The double-output-shaft motor I221, the two-way speed reducer I222 and the worm gear lifter I223 are purchased externally, the worm gear lifter I223 is SWL, the lifting force is 25 tons, and the transmission ratio is 1:32.

the platform lifting mechanism 24 is arranged on a main roof 232 of the main car 23, supports the pipe die platform 25, and places a pipe die support 26 on the pipe die platform 25 for stably supporting the large-caliber pipe die. The platform lifting mechanism 24 is basically identical to the auxiliary vehicle lifting mechanism 22 in structure and comprises a double-output-shaft motor II 241, a bidirectional speed reducer II 242 and a worm gear lifting device II 243 which are connected through a rotating shaft and a coupling. These components are identical to the component model of the sub-vehicle lifting mechanism 22. The double-output-shaft motor II 241 rotates and drives the lifting shaft of the worm wheel lifter II 243 to do lifting movement through the rotating shaft and the coupler, so that the lifting of the pipe die platform 25 is realized.

The movable support 3 comprises a rotary support 31 and a hydraulic cylinder 32, and the rotary support 31 can be rotated by the telescopic action of the lever of the hydraulic cylinder 32. When the lever stretches out, the rotary support 31 stands upright, can support and place the pipe die, and when the lever retracts, the rotary support 31 is horizontally placed and basically leveled with the ground, and the transport vehicle can walk transversely.

When the embodiment is used, the transport vehicle 2 is positioned on the longitudinal rail 6 in the middle of fig. 2, the large-caliber pipe die is placed on the pipe die support 26 by using the crane, the main vehicle power pair 231 acts to drive the transport vehicle to move on the longitudinal rail 6, and the main vehicle 23 stops when the transport vehicle reaches the crossing of the longitudinal rail and the transverse rail. The auxiliary vehicle lifting mechanism 22 is started, the auxiliary vehicle 21 descends, and when the auxiliary vehicle wheels contact the transverse rail 5, the lifting shaft of the worm wheel lifter I223 descends continuously, so that the main vehicle wheels are lifted and separated from the longitudinal rail 6. The platform lifting mechanism 24 is started, and the lifting shaft of the worm gear lifter II 243 is lifted to lift the pipe die. The auxiliary vehicle power pair 211 is started, and the transport vehicle transversely runs. At this time, the rotary support 31 of the pipe die placement position is turned flat, ready for the movement of the carriage. When the transport vehicle reaches the storage position of the large-caliber pipe die, the transport vehicle is positioned at the crossing of the longitudinal and transverse tracks, and the hydraulic cylinder 32 rotates the rotary support 31, as shown in the right side view of fig. 3. The auxiliary car lifting mechanism 22 lifts the auxiliary car 21, wheels of the main car 23 fall into the longitudinal rail, and the platform lifting mechanism 24 descends the pipe die platform 25, and the pipe die 4 falls on the fixed support 1 and the movable support 3, as shown in the left side view of fig. 3. When the pipe die support 26 is lowered below the lowest point of the pipe die 4, the transport vehicle 2 longitudinally opens from the longitudinal rail in the middle of the bracket, and the storage process of the pipe die is completed.

When the pipe die is used, the pipe die is required to be taken out from the storage rack, and the operation is reversed according to the operation.

In the embodiment, the distribution box is not shown in the attached drawing of the transport vehicle, the distribution box is externally connected with a three-phase plug to supply power to the distribution box, three-phase sockets are arranged on each longitudinal rail and each transverse rail, and cables connected with the three-phase sockets can be unfolded or folded along with the movement of the transport vehicle. When the transport vehicle turns, the three-phase plug is pulled out and plugged into the three-phase socket of the corresponding track to supply power for the distribution box.

Example 2

In the embodiment 1, after the pipe die is placed on the bracket, the pipe die platform is lowered at least by the height H shown in fig. 6, and the pipe die support 26 can fall below the lowest point of the pipe die. The higher the H is, the more stable the large-caliber pipe die is placed on the transport vehicle, but the lifting height of the pipe die platform is increased, and the lifting speed of the worm wheel lifter is slower due to the adoption of a threaded screw structure, so that the lifting and placing operation time of the pipe die is increased, the placing time of the pipe die is prolonged, and the efficiency is low. The smaller the H is, the smaller the lifting height of the pipe die is, the shorter the access time of the pipe die is, the placing efficiency of the pipe die is improved, but in the transportation process, the instability of the large-caliber pipe die is increased, the transport vehicle is limited to be incapable of stopping suddenly or starting rapidly, and the higher performance requirement is provided for the driving device. For this purpose, the pipe die support 26 is modified as per fig. 7 and 8. The pipe die support 26 comprises a support cushion 261, a small shaft 262, a baffle 263 and a groove 264. The long-strip-shaped supporting cushion block 261 is fixed on the main roof plate 232 and used for supporting a large-caliber pipe die, grooves 264 are formed in two ends of the long-strip-shaped supporting cushion block 261, small shafts 262 are mounted at the upper ends of the grooves 264, the small shafts 262 are rotatably connected with the baffles 263, and the baffles 263 correspond to the grooves 264. The bottom of the baffle 263 is designed with an oblong hole that mates with the small shaft 262. When the supporting pad 261 supports the large-caliber pipe die, the baffle 263 is inserted into the groove 264, and the groove 264 fixes the baffle 263 as shown in fig. 8 and 7, and at this time, the baffle 263 can limit the large-caliber pipe die to prevent the movement or rotation of the pipe die. When the large-caliber pipe die is placed on the pipe die storage rack, the baffle 263 is lifted out of the groove 264 and then rotated and flattened. This configuration minimizes H as shown in fig. 6, even without H height. The embodiment reduces H to zero basically, greatly reduces the lifting and placing time of the pipe die and improves the efficiency.

The structure of the transport vehicle 2 according to this embodiment is shown in fig. 9-11, since H is reduced to zero, the platform lifting mechanism 24 and the pipe die platform 25 are omitted, the pipe die support 26 is directly mounted on the main roof 232, and the auxiliary car lifting mechanism 22 is used to lift the main roof 232, so as to lift the pipe die. At the crossing of the longitudinal and transverse tracks, the main vehicle 23 is stopped, the auxiliary vehicle lifting mechanism 22 is started, the auxiliary vehicle 21 descends, and when the auxiliary vehicle wheels contact the transverse tracks 5, the lifting shaft of the worm wheel lifter I223 descends continuously, so that the main vehicle wheels are lifted and separated from the longitudinal tracks 6, and the main vehicle is lifted and the pipe die is lifted. At the crossing of the longitudinal and transverse tracks of the pipe die storage position, the auxiliary car lifting mechanism 22 returns, the main car 23 descends, the pipe die descends on the support, then the wheels of the main car fall on the longitudinal tracks, the auxiliary car lifting mechanism 22 returns continuously, the auxiliary car 21 is lifted, the wheels of the auxiliary car are separated from the transverse tracks, and the transport car 2 longitudinally opens from the longitudinal tracks in the middle of the support.

In this embodiment, the variable frequency motor power pair in embodiment 1 is modified to be a combination of a motor, a speed reducer, a sprocket and a chain, and in embodiment 1. The variable frequency motor is directly connected with the wheels, four main vehicles and four auxiliary vehicles are needed, the number of the variable frequency motors is large, and when faults occur, the rotation speeds of the wheels are not matched, so that each power pair of the embodiment only adopts one motor, and the motion consistency of the wheels is ensured. The wheel spacing of the main vehicle and the auxiliary vehicle is also adjusted in the embodiment, and the wheel spacing of the two vehicles is consistent, as shown by L in fig. 10. Therefore, the main and auxiliary vehicles of the transport vehicle can be interchanged on the longitudinal and transverse rails, and the direction of the pipe die faucet is convenient to adjust.

Compared with the embodiment 1, the embodiment omits a set of platform lifting mechanism 24 and a pipe die platform 25, and a set of motor, a speed reducer, a chain wheel and a chain are combined to replace four variable frequency motors, so that the manufacturing cost of the transport vehicle is greatly reduced, the fault maintenance rate is reduced, the wheel spacing is the same, and the design of the direction of the pipe die placement frame is facilitated.

Example 3

This embodiment is mainly a modification of the movable support 3, as shown in fig. 12-13. The movable bracket 3 includes a rotary bracket 31, a strut 33, a fixed bracket 34, and the like. The rotary support 31 rotates around the rotating shaft at the lower end of the rotary support, the pipe die is placed at the upper end when the rotary support rotates, and the rotary support is flush with the transverse rail 5 when the rotary support rotates. As shown in the drawing, the rotary bracket 31 is rotatably supported, both sides of the rotary bracket 31 are fixedly positioned by the supporting rods 33, and the supporting rods 33 are inserted into the fixing grooves of the fixing frame 34. When the transport vehicle reaches the crossing of the longitudinal and transverse tracks of the storage position of the large-caliber pipe die, the rotary support 31 is manually lifted, the supporting rods 33 are inserted into the fixing grooves of the fixing frames 34 to fix the rotary support 31, and then the pipe die descends and is placed on the support.

Compared with the embodiment, the hydraulic cylinder and the hydraulic system are omitted, the equipment cost and the maintenance cost are reduced, pit digging is not needed on the ground, the construction cost is reduced, and the potential safety hazard of pit falling is avoided. The embodiment is particularly suitable for multi-layer pipe die storage arrangement in workshops.

Example 4

In embodiment 3, since the fixing frame 34 is provided between the pipe die placement positions, it forms an obstacle for operation or cleaning, and at the same time, the distance between pipe die placement is increased, the number of stored pipe dies is reduced in the same area, and the site utilization is lowered.

In the embodiment, the movable support 3 is changed into a trolley support 35, and as shown in fig. 14 and 15, a wooden wedge 36 is adopted on the trolley support 35 to fix a pipe die. While on the ground there is provided a track for the trolley support 35 to travel longitudinally. In this way, when the carrier carriage 2 carries the pipe die on the transverse rail 5, the carriage support 35 is simply moved in advance. When the transport vehicle reaches the cross of the longitudinal and transverse tracks of the storage position of the large-caliber pipe die, the trolley support 35 is moved back to receive the pipe die.

Compared with the embodiment 3, the embodiment is also suitable for multi-layer pipe die storage arrangement in a workshop without a hydraulic system and manual operation of a movable bracket. The improvement is that the fixing frame 34 is not needed, the storage distance between the pipe dies is shortened, and the field utilization rate is improved.

Example 5

In this embodiment, the fixed bracket 1 is also changed to the carriage bracket 35 as shown in fig. 16. The advantage is that in the pipe die placing station, the trolley support 35 can move, so that the distance between pipe dies is reduced as much as possible, and the storage area of a workshop is fully utilized. This has the disadvantage that each time a tube mould is accessed, the trolley support 35 needs to be moved to the cross of the longitudinal and transverse tracks of the storage position.

The utility model can realize the longitudinal and transverse transportation of the large-caliber pipe die by utilizing the transport vehicle, and can realize the storage and the taking of the pipe die by matching with the movable bracket. The crane is not used for storing and taking the pipe die, so that the large-caliber pipe die can be placed outside a workshop without the crane or the pipe die storage area is arranged in the workshop in a layering manner, the problems of occupation and storage of the large-caliber pipe die are solved, and meanwhile, a device foundation is laid for automatic pipe die storage and management in the future.

The transport vehicle was manufactured according to example 1 in the early stage, constructed according to scheme 3, and put into use at present, since the production rhythm is not saturated. With the increase of the order of the ductile iron pipe or the improvement of the production rhythm, the following transport vehicle is modified according to the embodiment 2, the platform lifting mechanism on the following transport vehicle is taken down and changed into the auxiliary vehicle lifting mechanism of another transport vehicle, and the second large-caliber pipe die transport vehicle can be manufactured. The movable support is modified according to the embodiment 4, and the drawing of the trolley support 35 is designed at present.

Claims (8)

1. A large-caliber pipe die storage device is characterized in that: comprises a fixed bracket (1), a movable bracket (3), a transport vehicle (2), a transverse rail (5) and a longitudinal rail (6); the transport vehicle (2) comprises a main vehicle (23), a subsidiary vehicle lifting mechanism (22) and a subsidiary vehicle (21); the auxiliary vehicle lifting mechanism (22) is arranged on the bottom surface of a main roof plate (232) of the main vehicle (23) and comprises a double-output-shaft motor I (221), a bidirectional speed reducer I (222) and a worm wheel lifter I (223), wherein the double-output-shaft motor I (221), the bidirectional speed reducer I (222) and the worm wheel lifter I (223) are connected through a rotating shaft and a coupling, and the lifting shaft of the worm wheel lifter I (223) is connected with the auxiliary vehicle (21); a main vehicle power pair (231) of the main vehicle (23) drives the transport vehicle (2) to walk on the longitudinal rail (6), and an auxiliary vehicle power pair (211) of the auxiliary vehicle (21) drives the transport vehicle (2) to walk on the transverse rail (5); the movable support (3) can provide space for movement of the transport vehicle (2).

2. A large diameter pipe die storage device as defined in claim 1, wherein: a pipe die support (26) is arranged on the main roof panel (232); the pipe die support (26) comprises a support cushion block (261), a small shaft (262) and a baffle plate (263); the support cushion block (261) is of a strip shape, grooves (264) are formed in two ends of the support cushion block, a small shaft (262) is arranged at the upper end of the groove (264), and the small shaft (262) is movably connected with the baffle (263); the baffle (263) corresponds to the groove (264), and a long round hole is designed at the bottom of the baffle (263) and is matched with the small shaft (262); the shutter (263) can be inserted horizontally or vertically in the recess (264) in a rotary manner about the small axis (262).

3. A large diameter pipe die storage device as defined in claim 1, wherein: a platform lifting mechanism (24) and a pipe die platform (25) are arranged on the main roof (232); the platform lifting mechanism (24) supports the pipe die platform (25), and the platform lifting mechanism (24) comprises a double-output-shaft motor II (241), a bidirectional speed reducer II (242) and a worm gear lifter II (243) which are connected through a rotating shaft and a coupler; the lifting shaft of the worm gear lifter II (243) is connected with the pipe die platform (25).

4. A large diameter pipe die storage device as defined in claim 3, wherein: a pipe die support (26) is arranged on the pipe die platform (25); the pipe die support (26) comprises a support cushion block (261), a small shaft (262) and a baffle (263), wherein the support cushion block (261) is of a strip shape, grooves (264) are formed in two ends of the support cushion block, the small shaft (262) is installed at the upper end of each groove (264), the small shaft (262) is movably connected with the baffle (263), a slotted hole is formed in the bottom of the baffle (263), the slotted hole is matched with the small shaft (262), and the baffle (263) can be horizontally placed or vertically inserted into the grooves (264) in a rotating mode around the small shaft (262).

5. A large diameter pipe die storage device as defined in claim 1, wherein: the distribution box of the transport vehicle (2) is externally connected with a three-phase plug, each longitudinal rail (6) and each transverse rail (5) are respectively provided with a three-phase socket, and the three-phase plug cable connected with the three-phase sockets is unfolded or folded along with the movement of the transport vehicle.

6. A large diameter pipe die storage device as defined in claim 1, wherein: the main car power pair (231) or the auxiliary car power pair (211) is a variable frequency motor or a combination of a motor, a speed reducer, a chain wheel and a chain.

7. A large diameter pipe die storage device as defined in claim 1, wherein: the movable support (3) is a rotary support (31) and a hydraulic cylinder (32) or a component comprising the rotary support (31), a supporting rod (33) and a fixing frame (34); when the rotary support (31) rotates, a pipe die is placed at the upper end of the rotary support, and the rotary support is flush with the transverse track (5) when rotating; the hydraulic cylinder (32), or the supporting rod (33) and the fixing frame (34) are used for fixing the rotary support (31).

8. A large diameter pipe die storage device as defined in claim 1, wherein: the movable support (3) is a trolley support (35), and the fixed support (1) is replaced by the trolley support (35).