CN103429513B - Be connected to underwork and the running type handler of the trailer of stocker - Google Patents

Abstract

To reduce the weight of the counterweight beam, traveling stocker and trailer. The supporting structure of the tail car connected to the stacker of the present invention is a support structure that connects the tail car (19) to the driving type stocker (16), and the driving type stocker (16) has a track (18) ) on the stocker main body (26), the arm frame (17) that can be pitched and rotatably arranged on the stocker main body (26), and the arm conveyor ( 21), and a counterweight beam (25) arranged at the base end of the boom (17). The tail car (19) has a tail car foot (29), and moves freely on the track (18) together with the traveling stacker (16), and lifts the conveyor belt of the ground conveyor (20) upwards, The counterweight beam (25) is arranged so as to pass under the tail truck (19) due to the rotation of the boom (17), and the stacker main body (26) is connected to and supports the tail truck (19) through the connection support part (28). tip (19b).

Description

Support structure and traveling loading and unloading device of tail car connected to stocker

technical field

The present invention relates to connection with a stacker used when a large amount of bulk cargo such as coal and iron ore (hereinafter referred to as bulk cargo) transported by a ground conveyor is piled up in a stockyard The supporting structure of the tail car (tripper) and the driving loading and unloading device.

Background technique

In the past, for example, in loading and unloading facilities at wharfs and ironworks, a large amount of bulk materials such as coal and iron ore were accumulated and stored on the stockyard 3, and a traveling type loading and unloading device was used for the accumulation. is well known. The stacker 2 included in the traveling loading and unloading device 1 includes, as shown in FIG. A boom 7 supported on the rotating body 6 is undulatingly supported.

In addition, a ground conveyor 8 for loading or unloading is laid between the rails 4, and the conveyor belt of the ground conveyor 8 is lifted obliquely upward, and the tail car is set in such a way that the bulk conveyance is dropped from its upper end. 9. The trailer 9 is connected to the traveling body 5 and is used to transfer the bulk material to a boom conveyor (boom conveyor) 10 provided on the boom 7 . In this way, the bulk material transferred to the boom conveyor 10 is conveyed to the tip end side of the boom 7 and then thrown into the stockyard 3, thereby being piled up in a large amount in the shape of a truncated cone or a cone.

Moreover, the stocker 2 and the trailer 9 shown in this FIG. 7 are each independent structure bodies, and form the structure which each independently stands upright by itself. That is, the stocker 2 is provided with the traveling body 5, the revolving body 6 provided thereon, and the boom 7 supported by this revolving body 6 so that pitching is possible. Furthermore, a weight beam 11 extending to the opposite side of the boom 7 is provided at the base end portion of the boom 7 .

Also, the trailer 9 includes a trailer running chassis (bogie) 12 disposed so as to be movable on the rail 4 , a trailer support frame 13 provided thereon, and a trailer main body 9 a provided thereon.

A stacker-reclaimer is disclosed in Patent Document 1 as another example of such a travel-type loading and unloading device in which such a stocker and a tail car are independently erected.

Prior art literature:

Patent documents:

Patent Document 1: Japanese Patent Laid-Open No. 2001-58725.

Contents of the invention

Problems to be solved by the invention:

However, as shown in FIG. 7, a counterweight beam 11 is provided on the boom 7 of the stocker 2. When the counterweight beam 11 passes under the trailer 9 by the rotation of the boom 7, it is necessary to It is prevented from contacting the tail car support frame 13 and the tail car running chassis 12 and the like. Therefore, it is necessary to shorten the length L1 of the weight beam 11 . The weight beam 11 includes a weight body 11 a for maintaining the weight balance of the boom 7 .

In this way, when the length L1 of the weight beam 11 is formed to be short, the weight of the weight body 11a needs to be increased in order to make the moment the same, and thus the strength of the weight beam 11 and other structures supporting it need to be increased. Consequently, the cost increases, and the period required to manufacture the stocker 2 becomes longer.

Here, it is also conceivable to arrange these tail car support frames 13 etc. at positions away from the stocker 2 so as to prevent the counterweight beam 11 from contacting the tail car support frames 13 etc. when the boom 7 rotates. The tail car support frame 13 etc. is arranged on the position away from the stocker 2, then the part of the left end of the tail car support frame 13 etc. shown in Fig. The overhang of 13 is increased to reduce stability.

In addition, as shown in Figure 7, in order to make the tail car 9 stand upright independently, it is necessary to have a tail car support frame 13 and a tail car running chassis 12 etc. having the strength to support the tail car 9 independently, so the tail car 9 The cost increases, and the period required for manufacturing the tail car 9 becomes longer.

The present invention was made to solve the above-mentioned problems, and its object is to provide a connection that can make the counterweight beam longer, thereby reducing the weight of the counterweight beam, the traveling stocker, and the trailer. The support structure and driving loading and unloading device of the tail car of the stacker.

Means to solve the problem:

According to the present invention, the supporting structure of the tail car connected to the stocker is composed of a stocker main body that can travel on the track, and a stocker main body that is connected to the stocker main body and can travel on the track together with the stocker main body. The support structure of the trailer connected to the stocker formed by the trailer, wherein the tip end of the trailer is supported by the main body of the stocker.

According to the supporting structure of the tail car connected to the stocker of the present invention, the main body of the stocker is formed to connect and support the tip end of the tail car through the connection support part, so it can be used to support the tail car and make it on the track. The upper-moving trailer foot is arranged at a position away from the traveling stocker, and at the same time it can be downsized. Therefore, when the counterweight beam passes under the trailer by the rotation of the boom, it can be prevented from coming into contact with the foot of the trailer, and as a result, the counterweight beam can be formed to be long. The weight beam includes a weight body as an auxiliary member for maintaining the balance of the boom.

In the supporting structure of the tail car connected to the stocker according to the present invention, the main body of the stocker may have a rotating frame rotatably provided by the lower side rotating support part, and an arm frame is provided on the rotating frame ; The tip end of the trailer is provided on the upper part of the rotating frame through the upper rotating support part.

In this way, the weight on the stocker main body side of the trailing vehicle can be supported by the upper swivel support portion, the swivel frame, and the lower swivel support portion. Moreover, the rotating frame is rotatably supported by the lower rotating support part, and the tip end of the trailer is provided on the upper part of the rotating frame through the upper rotating supporting part, so it will not be piled up by the lower rotating supporting part. The restraint of the lower side of the main body and the trailer can make the jib mounted on the rotating frame freely rotate together with the rotating frame.

In the supporting structure of the trailer connected to the stocker according to the present invention, the connection supporting part that supports the tip end of the trailer through the main body of the stocker may be formed by a horizontally arranged trailer support pin. The center is a pin structure that supports the tip end of the trailer freely.

In this way, for example, when the trailer bends due to the weight of the trailer and the bulk cargo on the trailer, the relative displacement of the trailer produced between the trailer and the stocker main body can be allowed by the pin structure. With this, in the device provided with the tail car, the stocker main body, the upper side rotation support part and the lower side rotation support part, it is possible to reduce or release the force based on the relative displacement acting on these respective rotation support parts, For example torque.

In the supporting structure of the trailer connected to the stocker according to the present invention, the arm frame may be rotatably arranged on the main body of the stocker; the upper part of the arm frame is swingably suspended by the arm frame support pin on the main body of the stacker.

In this way, when the boom is swung in the pitch direction around the boom support pin, the center of the swing can be located at the upper part of the boom. With this, when the center of gravity (the center of gravity of the boom, etc.) of the total weight of the boom, the boom conveyor, and the bulk material conveyed by the boom conveyor is located at the upper part of the boom, the swing of the boom can be made The center position is close to the center of gravity position of the jib etc. As a result, when the boom is shaken, the horizontal movement distance of the center of gravity position of the boom etc. can be reduced, and the weight of the boom etc. can be reduced by the movement of the center of gravity position of the boom etc. A force, such as a moment, on the machine body. With this, for example, it does not matter that the force generated by the swing drive device for swinging the boom in the pitch direction is small, and the cost of the swing drive device can be reduced.

In the supporting structure of the trailer connected to the stacker according to the present invention, the boom can be inserted through and arranged inside the rotating frame, and the upper part of the boom can be freely swingably suspended by the boom support pin. It is hung on the rotating frame, and in addition, an inspection passage is set on the side of the boom.

In this way, if the boom support pin for swingably supporting the boom is provided on the top of the boom, it is possible to prevent the boom support pin from becoming an obstacle when an inspector passes through the inspection path provided on the side of the boom. With this, it is possible to reduce labor required for inspection work of boom conveyors and the like.

In the supporting structure of the tail car connected to the stacker according to the present invention, a tail car chute may be provided on the tip of the tail car, and the tail car chute is formed to be arranged in an annular The inner side of the upper rotation support part is formed, and the lower opening of the tail car chute faces the structure of the boom conveyor.

In this way, when the tail car chute is arranged on the inner side of the upper side swivel support part formed in a ring shape, the upper side swivel support part can support the tip of the tail car, and in addition, it is possible to prevent the tail car chute from interfering. The rotating boom allows the boom to rotate freely. Moreover, the bulk material conveyed by the ground conveyor through the tail car can be sent to the boom conveyor through the tail car chute.

The traveling loading and unloading device according to the present invention includes a traveling stocker to which the support structure of the trailer connected to the stocker according to the present invention is applied, and the trailer.

The traveling loading and unloading device according to the present invention is provided with the support structure of the tail car connected to the stocker according to the present invention, and the support structure of the tail car connected to the stocker has the same function as above. Moreover, according to the traveling type loading and unloading device, the traveling type stocker and the tail car connected and supported thereon can travel on the rails and move to a desired traveling position. Moreover, at its moving position, the bulk material transported by the ground conveyor can be transported obliquely upward by the tail truck, and then sent out to the boom conveyor. Then, the bulk material conveyed to the boom conveyor can be conveyed by the boom conveyor and discharged from the tip end thereof. The discharged bulk cargoes accumulate, for example, in large quantities on a stockyard.

Invention effect:

According to the supporting structure of the tail car connected to the stocker and the traveling loading and unloading device of the present invention, the main body of the stocker is formed to connect and support the tip end of the tail car through the connection support portion, so that the counterweight beam can be formed more compactly. Therefore, the weight of the weight beam including the weight body for generating the required predetermined moment can be reduced. Moreover, since the foot portion of the trailer can be miniaturized, it is possible to reduce the cost of these traveling stockers and the trailer and to shorten the period required for their manufacture.

Description of drawings

Fig. 1 is a diagram showing a traveling loading and unloading device according to an embodiment of the present invention, wherein (a) is a front view, and (b) is a top view;

Fig. 2 is a side view of the traveling loading and unloading device shown in Fig. 1(a);

Fig. 3 is a schematic side view showing the traveling loading and unloading device according to the above embodiment;

Fig. 4 is a partial enlarged side view of the tail car support structure of the traveling stocker suitable for the traveling loading and unloading device shown in Fig. 3 observed from the side direction;

Fig. 5 is a partially enlarged front view of the tail car support structure of the traveling stocker suitable for the traveling loading and unloading device shown in Fig. 3 observed from the front direction;

Fig. 6 is a diagram showing the relationship between the boom support pin and the center of gravity positions of the boom and the like in the tail car support structure of the traveling stocker shown in Fig. 4;

Fig. 7 is a side view showing a conventional traveling loading and unloading device.

detailed description

Hereinafter, an embodiment of a supporting structure of a trailer connected to a stocker and a traveling loading and unloading device provided with the supporting structure according to the present invention will be described with reference to FIGS. 1 to 6 . The traveling loading and unloading device 15 shown in (a) and (b) of Fig. 1 shows that the boom 17 arranged on the traveling stocker 16 as shown in the top view of Fig. 1 (b) rotates to relative to the track The direction of 18 is in a state where the position is substantially at right angles. FIG. 2 shows the trailer 19 connected and supported on the traveling stocker 16 . The schematic side view of the mobile loading and unloading device 15 in FIG. 3 shows a state in which the boom 17 of the traveling loading and unloading device 15 shown in FIG. 1 is located at a position parallel to the direction of the rail 18 .

According to the traveling loading and unloading device 15 shown in FIGS. 1 to 3 , the traveling stocker 16 and the trailer 19 connected thereto can travel on the rail 18 to move to a desired traveling position and stop. Then, at the moved position, the bulk material transported by the ground conveyor 20 can be transported obliquely upward by the trailer 19 , and sent out to the boom conveyor 21 . Then, the bulk material conveyed to the boom conveyor 21 can be conveyed by the boom conveyor 21 and discharged from the tip end thereof, that is, the tip end of the boom 17 . The discharged bulk cargoes accumulate, for example, in large quantities on the stockyard 22 .

The traveling type stocker 16 that the traveling type loading and unloading device 15 shown in FIG. A rotating frame 24 rotatably provided on the top, and an arm frame 17 supported on the rotating frame 24 so as to be heavable.

Then, on this boom 17, a boom conveyor 21 is arranged at its upper position. Also, a weight beam 25 extending to the opposite side of the boom 17 is provided at the base end portion of the boom 17, and the weight beam 25 includes a weight body 25a. The traveling body 23 and the revolving frame 24 are included in the stocker main body 26 .

Also, on this travel type stocker 16, be provided with the traveling driving part that is used for traveling, the rotation driving part that is used to rotationally drive the arm frame 17, the rocking drive device 27 (such as Hydraulic cylinder device), and the conveyor driving part for driving the boom conveyor 21.

The trailer 19 included in the travel-type loading and unloading device 15 shown in FIG. on the upper end of the rotating frame 24. Moreover, the tail truck 19 has the tail truck foot part 29 which supports the tail truck main body 19a, and the tail truck foot part 29 is equipped with the wheel at the lower end. The trailer 19 is pulled by the traveling stocker 16 and can move on the rail 18 . Furthermore, the ground conveyor 20 is erected on the tail truck 19, and the tail truck 19 is formed in the structure which lifts up this belt diagonally upward.

And, as shown in FIG. 3 , the counterweight beam 25 is arranged so as to pass under the tail truck body 19 a by the rotation of the boom 17 .

Moreover, as shown in FIG. 3 , the traveling body 23 and the trailer foot part 29 are connected by a connecting member 41 . However, as shown in FIG. 2, the connection member 41 may be omitted.

According to the supporting structure 30 of the tail car that is connected to the stocker shown in this Fig. 3, because the stocker main body 26 connects and supports the tip end 19b of the tail car 19 through the connection support portion 28, it can be used to support the tail car 19 and the trailer foot 29 that moves on the rail 18 is arranged at a position away from the main body 26 of the stocker, and at the same time it can be miniaturized. Therefore, when the counterweight beam 25 passes under the tail car main body 19a due to the rotation of the boom 17, it can prevent contact with the tail car foot portion 29, and as a result, the length L2 of the counterweight beam 25 (>L1 ) are formed longer. The weight beam 25 includes a weight body 25 a as an auxiliary member for maintaining the balance of the boom 17 .

In this way, the weight beam 25 can be formed long, and thus the weight of the weight beam 25 including the weight body 25 a for generating a required predetermined moment can be reduced. Moreover, since the trailer foot part 29 can be miniaturized, it is possible to reduce the cost of these traveling stockers 16 and the trailer 19 and to shorten the period required for their manufacture.

However, as shown in FIG. 3, although the tail car foot portion 29 supporting the tail car body 19a is arranged at a position away from the tail car body 26, since the tip end portion 19b, which is the tip end portion of the tail car body 19a, is connected Since the support part 28 is connected and supported by the upper end part of the stocker main body 26, the stability of the trailer 19 is excellent.

Moreover, the rotation frame 24 shown in FIG. 3 is formed in the shape of a rectangular frame, for example, and is rotatably installed on the traveling body 23 via the lower side rotation support part 31. As shown in FIG. Further, the tip end portion 19b of the trailer 19 is provided on the upper portion of the rotating frame 24 via the upper rotating support portion 32 . The lower rotation support portion 31 and the upper rotation support portion 32 are constituted by, for example, ring-shaped turntable bearings. Of course, other rotation support structures are also possible.

With this structure, the weight of the stocker main body 26 side of the trailer 19 shown in FIG. Moreover, the rotating frame 24 is rotatably supported by the lower rotating support part 31, and the tip part 19b of the trailer 19 is provided on the upper part of the rotating frame 24 through the upper rotating supporting part 32, so that it is not affected by the lower side. The boom 17 provided on the swivel frame 24 can be freely rotated together with the swivel frame 24 by restraining the traveling body 23 and the trailer 19 of the swivel support portion 31 .

Furthermore, as shown in FIGS. 4 and 5 , a connection support portion 28 is provided on the upper portion of the rotating frame 24 , and the connection support portion 28 is formed as a pin structure. The connection support portion 28 supports the tip end portion 19b of the trailer 19 swingably around the trailer support pin 33 arranged horizontally.

That is, in the upper rotation support portion 32 shown in FIGS. 4 and 5 , two lower pin support portions 34 that support the rear vehicle support pin 33 through recesses formed on the upper surface thereof are provided at intervals from each other. Further, on the lower surface of the tip end portion 19b of the trailer 19, two upper side pin support portions 35, which are formed in the lower surface and engage with the trailer support pin 33, are provided at intervals from each other. The tail car support pin 33 is mounted in a recess formed in each pair of the lower side pin support portion 34 and the upper side pin support portion 35 .

However, although it is not shown in figure, instead of this, the tail-car support pin 33 may be inserted in the through-hole formed in these each pair of lower side protrusion and upper side protrusion.

Owing to be constituted like this, so as shown in double-dashed line in Fig. 4, when, for example, when the tail car main body 19a bends due to the weight of the bulk material conveyance on the tail car main body 19a and the tail car 19, the support portion 28 can be connected. (Pin structure) Relative displacement in the bending direction of the trailer main body 19 a generated between the trailer 19 and the stocker main body 26 is allowed. With this, the force based on the relative displacement acting on the trailer main body 19 a and the stocker main body 26 , for example, the moment acting on the stocker main body 26 can be reduced or released.

In addition, by virtue of this, the bias load acting on the upper rotation support part 32 (turntable bearing) and the lower rotation support part 31 (turntable bearing) shown in FIG. The miniaturization of the support parts 31 and 32 can increase the lifespan at the same time.

Also, as shown in FIGS. 4 and 5 , the boom 17 is inserted and arranged inside the rotating frame 24 , and the upper part of the boom 17 is swingably suspended from the upper frame of the rotating frame 24 by the boom support pin 36 . The boom 17 can swing in the pitch direction around the boom support pin 36 .

That is, two lower pin support portions 37 protrude upward from the left and right side surfaces of the boom 17 shown in FIG. Furthermore, two upper side pin support parts 38 protruding downward from the lower surface of the upper frame of the rotating frame 24 are provided at intervals from each other. The arm support pin 36 is inserted through a through-hole formed in each pair of the lower protrusion 37 and the upper protrusion 38 .

With this configuration, when the boom 17 shown in FIG. 4 is swung in the pitch direction around the boom support pin 36 , the swing center can be located at the upper portion of the boom 17 .

With this, when the center of gravity (the center of gravity of the boom 17, etc.) G1 of the sum of the weights of the boom 17, the boom conveyor 21, and the bulk materials conveyed by them is located at the upper part of the boom 17, the boom can be The center position of the swing of 17 is close to the center of gravity position of the boom 17 and the like.

As a result, as shown in the left diagram of FIG. 6 , when the jib 17 is swung, the moving distances S1 and S2 in the horizontal direction of the position of the center of gravity G1 of the jib 17 etc. can be reduced, and the The movement of the center of gravity position of the frame 17 and the like in the horizontal direction causes a force, such as a moment, to act on the stocker main body 26 by the weight of the boom 17 and the like.

With this, even if the force generated by the swing drive device 27 (refer to FIG. 1(a)) for swinging and driving the boom 17 in the pitch direction, such as a hydraulic cylinder device, is small, the hydraulic pressure can be improved. Cost reduction is achieved by downsizing the cylinder device and the like.

In this embodiment, as shown in the left diagram of FIG. 6 , the center of gravity G1 is located above the boom 17 . In this way, the center of gravity G1 is located above the arm frame 17 because of the weight of the counterweight body 25a.

This FIG. 6 shows the relationship between the positions of the boom support pin 36 and the center of gravity G1 of the boom 17 and the like. The left side figure of FIG. 6 shows an example of this embodiment, and the boom support pin 36 is provided at the upper position of the boom 17 . The diagram on the right side of FIG. 6 shows an example in which the boom support pin 36 is provided at approximately the center of the boom 17 . It can be seen from FIG. 6 that when the distance between the boom support pin 36 and the center of gravity G1 is shortened from K2 to K1 (K2-K1=K3), the movement of the center of gravity G1 in the horizontal direction when the boom 17 is shaken can be reduced. The distance is shortened from S3 and S4 to S1 and S2.

Again, as shown in FIG. 5 , the boom 17 is inserted and arranged inside the rotating frame 24 , and the upper part of the boom 17 is swingably suspended on the rotating frame 24 through the boom support pin 36 . Spot check passage 39 is set on each side of left and right sides.

Like this, if the boom supporting pin 36 that swingably supports the boom 17 is arranged on the top of the boom 17, it is possible to prevent the boom when the inspector passes through the inspection passage 39 provided on the left and right sides of the boom 17. Support pin 36 becomes an obstacle. Thereby, the labor force of the inspection work of the boom conveyor 21 etc. can be reduced.

And, as shown in FIG. 5, the boom support pin 36 and the boom conveyor 21 are arranged on the upper part of the boom 17 at positions close to each other, so the inspector can easily check these booms from the inspection path 39. Both the pin 36 and the boom conveyor 21 are supported.

In addition, as shown in FIGS. 4 and 5 , a tail car chute 40 is provided at the tip end portion 19 b of the tail car 19 . The tail car chute 40 is disposed inside the annular upper rotation support portion 32 , and the lower opening of the tail car chute 40 is formed to face the upper surface of the boom conveyor 21 .

Like this, when the tail car chute 40 is arranged on the inner side of the upper side rotation support part 32 formed in an annular shape, the upper side rotation support part 32 can be made to support the tip end part 19b of the tail car 19. The cart chute 40 interferes with the rotating boom 17 so that the boom 17 can rotate freely. Moreover, the bulk material conveyed by the ground conveyor 20 through the tail car 19 can be sent out to the boom conveyor 21 through the tail car chute 40 .

However, in the above-mentioned embodiment, as shown in FIG. 3 , although the example in which the self-propelled traveling body 23 is set on the traveling stocker 16 and not on the trailer 19 is shown, instead of these, it may be The self-propelled traveling body is arranged on both of the traveling stocker 16 and the trailer 19 .

In addition, in the above-described embodiment, although the boom 17 is configured to be pitchable, it may be configured to be non-pitchable instead.

Industrial applicability:

As mentioned above, according to the supporting structure and the traveling loading and unloading device of the trailer connected to the stacker of the present invention, the counterweight beam can be formed longer, thereby having the advantages of achieving the optimal balance of the counterweight beam and even the traveling stocker and the trailer. The excellent effect of reducing the weight of the vehicle is suitable for application to a tail vehicle support structure and a traveling loading and unloading device connected to such a stocker.

Symbol Description:

15 traveling loading and unloading device;

16 traveling stacker;

17 jib;

18 tracks;

19 tail cars;

19a tail car main body;

19b tip;

20 ground conveyors;

21 boom conveyor;

22 stock yard;

23 traveling body;

24 rotating frames;

25 counterweight beams;

25a weight body;

26 stacker main body;

27 Shake driving device;

28 connection support department;

29 tail car foot;

30 a support structure connected to the tail car of the stocker;

31 lower side rotation support part;

32 upper side rotation support part;

33 tail car support pin;

34, 37 lower side pin support part;

35, 38 upper side pin support part;

36 inspection channels;

40 tail car chute;

41 connection members.

Claims (5)

1. a support structure connected to a tail car of a stocker, characterized in that, it is composed of a stocker main body that can travel on the track, and is connected to the stocker main body and together with the stocker main body The support structure of the tail car connected to the stacker composed of the tail car that can travel on the track; It has a rotating frame that is included in the main body of the stocker and supports the tip end of the trailer, and an arm that is inserted and arranged inside the rotating frame; The rotating frame is rotatably provided by the lower rotating support part; The tip end of the trailer is provided on the upper part of the rotating frame through the upper rotating support part; The upper part of the boom is freely swingably suspended on the rotating frame through the boom support pin; On the boom, there is provided a lower side pin supporting portion protruding upward and forming a pin hole through which the boom supporting pin is inserted; On the rotating frame, there is provided an upper side pin supporting portion protruding downward from an upper portion of the rotating frame and forming a pin hole through which the boom supporting pin is inserted; A counterweight beam is arranged on the base end of the boom; The counterweight beam is disposed so as to pass under the trailer when the boom is rotated. 2. The supporting structure of the tail car connected to the stocker according to claim 1, wherein the connection support portion supporting the tip of the tail car through the main body of the stocker is horizontally arranged The trailer support pin is a pin structure that pivotably supports the tip of the trailer. 3. The supporting structure of the tail car connected to the stocker according to claim 1, characterized in that, an inspection passage is provided on the side of the boom. 4. The support structure connected to the trailer of the stacker according to claim 1, characterized in that, A tail car chute is arranged on the tip end of the tail car; The tail car chute is arranged inside the ring-shaped upper rotation support portion, and the lower opening of the tail car chute faces the boom conveyor. 5. A traveling stocker equipped with the supporting structure of the tail car connected to the stocker according to claim 1, and a traveling loading and unloading device for the tail car.