JP2001048005A - Conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and lightweight conveyer which can easily mount a conveying carriage on and demount it from a rail and can safely convey a load. SOLUTION: This conveyer 10 is constituted by a cylindrical rail 12 and a conveying carriage 14. The conveying carriage 14 has a pair of clamp members 20, 20 clamping the rail 12 and eyebolts 18, 18 for suspending a load and has a link mechanism converting weight of the load suspended by the eyebolt 18 into force clamping the rail 12 by a pair of the clamp members 20, 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transporting device, and more particularly to a transporting device for transporting materials and the like to and from a site in construction work.

[0002]

2. Description of the Related Art Conventionally, a rail-type transport device is known as a device for transporting materials and the like at a construction site. In this transport device, a rail is laid on a load transport track, a load is suspended on the rail via a transport truck, and then the transport truck is moved along the rail to transport the load.
In the transport device disclosed in Japanese Patent Application Laid-Open No. 11-115575, a transport rail is run by laying a pipe-shaped rail and supplying compressed air to the inside of the rail.

[0003]

However, the transportation device disclosed in Japanese Patent Application Laid-Open No. H11-115753 has a disadvantage that the transportation trolley cannot be easily removed from the rail. For this reason, when transporting loads to one rail simultaneously from both directions, it is necessary to install a plurality of transport vehicles on the rail in advance and replace the loads of the transport vehicles traveling from both directions in the middle. there were. However, when a plurality of transport vehicles are installed on the rail, unnecessary transport vehicles exist when transporting the load only in one direction, which hinders the transport operation. In addition, the conventional transport device has a drawback that the transport vehicle cannot be removed from the rails and cannot be carried, so that if there is no transport vehicle near the load to be transported, the transport vehicle must travel to the position of the load. there were.

[0004] Therefore, there is a demand for a transport device that can easily attach and detach the transport cart from the rail. But,
If the transport trolley can be easily attached and detached, there is a risk that the transport trolley may fall off the rails when the load is heavy, resulting in an increase in the size of the transport trolley.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a small and light-weight transport device capable of easily attaching and detaching a transport truck to and from a rail and capable of transporting a load safely. And

[0006]

According to the present invention, in order to achieve the above-mentioned object, a rail is provided above a load carrying track, a load is suspended on the rail via a carrier, and the carrier is attached to the rail. A transport device that transports a load by moving along a rail, wherein the transport trolley suspends the load by a pair of holding members that hold the rail via a rotatably supported roller. And a link between the pair of holding members and the hanging portion so that the pair of holding members can be freely opened and closed, and the load of the load suspended on the hanging portion is A link mechanism configured to convert a pair of holding members into a force for holding the rail,
It is characterized by having.

According to the present invention, when a load is hung on the suspension portion, the load of the load is converted into a force for holding the rail by the link mechanism by the link mechanism. A pair of holding members firmly hold the rail. Therefore, it is possible to prevent the carriage from falling off the rails without increasing the size of the carriage.

Further, according to the present invention, the carrier can be easily attached to and detached from the rail because of the simple structure using the link mechanism.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a transportation device according to the present invention.

FIG. 1 is a perspective view showing a transport device according to the present embodiment.

As shown in FIG. 1, the transport device 10 includes a rail 12 and a transport vehicle 14.

The rail 12 is formed in a cylindrical shape by a resin or the like, and is suspended above a transportation path of a load by suspension bolts 16.

As shown in FIGS. 2 and 3, the transport vehicle 14 has eyebolts (suspension portions) 18, 1 for suspending a load.
8 and a pair of holding members 20, 20 for holding the rail 12.
And a link mechanism for connecting the eyebolt 18 and the pair of holding members 20, 20.

The link mechanism comprises links 22A, 24A, 26A, 28A arranged to form a parallelogram;
Link 2 arranged in parallelogram so as to face this
2B, 24B, 26B, 28B and axes 30, 32, 3
It is constituted by connecting each rotatably at 4, 36. That is, link 22A and link 24A,
And the link 22B and the link 24B are each a shaft 3 at the end.
0 so that they are rotatably connected. And link 24
A and the link 26A, and the link 24B and the link 26B are rotatably connected at their ends by a shaft 32. Similarly, the link 22A and the link 28A and the link 2
2B and the link 28B are rotatably connected at their ends by a shaft 34. Also, link 26A and link 28
A, the link 26B and the link 28B are rotatably connected by a shaft 36 at the intersection position.

Eye bolts 18, 18 are attached to the shaft 30, so that a load can be suspended via a wire, a chain, or the like. On the side of the shaft 36 facing the shaft 30, the holding members 20, 20 are provided with the link 2.
6A and 26B and bridges 28A and 28B. The holding member 20 has two orthogonal planes on the inner side (on the side to be held), and two rollers 38 are rotatably mounted on each of the two planes. Thus, when a load is hung on the eyebolt 18, a pair of holding members 20, 2
Are narrowed, and the outer peripheral surface of the rail 12 can be sandwiched by the rollers 38.

The holding member 20 is attached to each link 26A, 26B, 28A, 28B by screws 40,40. A plurality of screw holes (not shown) are formed at different positions in the holding member 20, and the installation angle of the holding member 20 is adjusted by selecting the screw holes and screwing the screws 40. can do. Thus, the angle of the rotation axis of the roller 38 can be adjusted. The angle of the roller 38 is set so that the angle θ between the rotation axis of the roller 38 and the horizontal plane is as small as possible within a range in which the upper roller 38 does not contact the suspension bolt 16 (see FIG. 1).

Springs 42, 42 are mounted between the shafts 32, 34 shown in FIG.
2, the shafts 32 and 34 are urged in a direction in which the distance therebetween is reduced. Therefore, the holding members 20, 20 connected to the shafts 32, 34 via the link mechanism are urged by the springs 42, 42 in a direction in which the distance therebetween is reduced.

At both ends of the shaft 34, lock plates 44 are rotatably mounted. The distal end of the lock plate 44 is configured to engage with the end of the shaft 32.

FIGS. 4 and 5 are a perspective view and an assembled view of the distal end of the lock plate 44. FIG.

As shown in these figures, a lock-hole 44 is formed at the tip of the lock plate 44 with a keyhole-shaped groove 46 with which the end of the shaft 32 is engaged, and a stopper plate 45 having an opening 45A. It is attached by a pin 49. A spring 47 is provided between the pin 49 and the stop plate 45, and the stop plate 45 is urged toward the lock plate 44. Thereby, the lock plate 44 is rotated to engage the shaft 32 with the groove 46, and when the end of the shaft 32 is inserted into the opening 45 </ b> A of the stop plate 45, the stop plate 45 is
Therefore, the stopper plate 45 and the shaft 32 are engaged. As a result, the shaft 32 is
6 is prevented, and the shaft 32 and the shaft 34 are prevented from spreading beyond a predetermined distance. Here, the predetermined interval is an interval such that the rail 12 having a predetermined diameter does not fall off the pair of holding members 20.

Next, the operation of the transport device 10 configured as described above will be described with reference to FIG.

First, as shown in FIG. 6 (a), the distance between the holding members 20,
(See FIG. 1). Then, in this state, the rail 12 is arranged between the pair of sandwiching members 20, 20, and as shown in FIG.
The rail 12 is held between the four rollers 38. At this time, the pair of holding members 20, 20 are urged in the direction of holding the rail 12 by the spring 42, so that the transport vehicle 14 does not fall from the rail 12.

Next, as shown in FIG. 6C, the lock plate 44 is rotated, and the shaft 32 is engaged with the groove 46. As a result, the shaft 32 and the shaft 34 do not spread more than the predetermined interval, so that the pair of holding members 20, 20 also does not spread, and the carrier 14 is prevented from falling off the rail 12.

Next, the eye bolt 18 of the carriage 14 is
Suspend loads via wires, chains, etc. At this time, the load of the load is reduced by the action of the link mechanism.
Is converted into a force for pinching. Therefore, as the load becomes heavier, the force holding the rail 12 becomes stronger, and the carrier 14 is prevented from falling off the rail 12.

Next, the carriage 14 is moved along the rails 12 to convey the load to a predetermined position. At this time, as shown in FIG.
Can travel without contacting the suspension bolts 16 to safely carry the load.

As described above, the transport device 10 of the present embodiment
Since the link mechanism changes the load of the load to the force by which the holding members 20 and 20 hold the rail 12, the load can be transferred without increasing the size and weight of the transport vehicle 14. That is, the size and weight of the transport vehicle 14 can be reduced. Furthermore, the transport vehicle 14 can easily move the rail 12 by simply increasing the distance between the pair of holding members 20, 20.
Can be attached and detached. Therefore, the transport vehicle 14 can be carried, and workability at the site is improved.

The pair of holding members 2 of the transport vehicle 14
Since the rails 0 and 20 are urged by the springs 42 in a direction to clamp the rail 12, even when the load is not hung or the load is light, the transport vehicle 14 can move the rail 1
2 can be prevented from falling off.

In this embodiment, a pair of holding members 2 are provided by a lock plate 44 attached to a link mechanism.
Since the 0 and 20 are prevented from spreading beyond a predetermined interval, the carrier 14 is reliably prevented from dropping off the rail 12. When the rail 12 is larger than the predetermined diameter, the groove 46 of the lock plate 44
Therefore, the transport vehicle 14 cannot be attached to the rail 12. This is because, if the lock plate 44 is not provided, if the diameter of the rail 12 is large, the force by which the pair of holding members 20 and 20 hold the rail 12 is weakened.
This is to prevent the risk that the transport vehicle 14 falls from the rail 12. Conversely, when the diameter of the rail 12 is small, the contact portion between the roller 38 and the rail 12 moves upward, so that the vertical component of the force that the rail 12 receives from the roller 38 increases, and the carriage 14 falls off the rail 12. The danger of doing is reduced. However, even in this case, a groove similar to the groove 46 of the lock plate 44 is provided inside the groove 46 (the shaft 3).
4), the groove is selected and the shaft 32 is engaged with the carrier, so that the carriage 14 is
2 can be reliably prevented from falling off.

Further, since the rail 12 of the transport device 10 is formed in a cylindrical shape, the rail 12 can be made light and strong. Therefore, the rail 12 can be installed easily and at low cost. Further, since the rail 12 is suspended, the rail 12 can be installed even when there is a step on the floor at the site or when materials are placed on the floor.

Further, the transport device 10 according to the present embodiment
The angle of the rotation axis of the roller 38 of the carriage 14 can be adjusted,
The angle θ between the rotation axis and the horizontal plane can be made as small as possible. As a result, the transport vehicle 14 travels stably, so that the load can be transported safely without swinging.

The number and arrangement of the rollers 38 are not limited to those in the above-described embodiment.
It is only required that 2 can be securely clamped. For example, as shown in FIG. 7, when a rail 48 made of I-beam is used,
Roller 5 abutting on the upper surface of flange portion 48A of rail 12
When the roller 52 and the roller 52 abutting on the side surface of the brim portion 48A are arranged, the transport vehicle 14 runs stably on the rail 48. As shown in FIG. 8, when the rail 54 made of Y-type steel is used, the roller 38 is arranged in the same manner as in the above-described embodiment, and the lower roller 38 is attached to the tip end surface of the Y-type steel rail 54. The upper roller 38 is brought into contact with the rail 5
4 is brought into contact with the side surface of the tip. Thus, roller 3
By changing the arrangement of 8, various shapes of rails can be used.

Further, in the above-described embodiment, two rollers 38 are provided on each of the upper and lower sides of the pair of holding members 20, 20. However, as shown in FIG. Is also good. In this case, even if the rail 12 is curved and a corner is formed, the transport vehicle 14 can run smoothly.

Further, as shown in FIG.
Is formed as a flat plate, and the supporting members 9
4 and 94 may be rotatably mounted via pins 96, and the support members 94 may be provided with rollers 38 and 38. In this case, even if the rail 12 has a corner portion, the support member 9
Since the carriers 4 and 94 rotate and follow the rails 12, the transport vehicle 14 can run smoothly.

Further, as shown in FIG.
An articulation portion may be provided at the center position between the pair of holding members 4 and 36 and the pair of holding members 20 and 20, and the right and left sides may rotate about the pin 55. Even if there is a corner on the rail 12, the joints are bent around the pin 55 and follow the shape of the rail 12.
Can be dealt with even when is bent at a steep angle. In addition, the transport cart 14 is vertically attached to the holding member 20.
Even in the case where a set or more rollers 38 are provided, the corners of the rail 12 can be run stably by increasing the number of joints.

FIG. 12 shows an example in which covers 56, 56 are provided on the front side in the traveling direction of the transport vehicle 14, and the suspension bolts 16 are guided by the covers 56, 56. In this case, when the traveling carriage 14 swings about the axis of the rail 12, the cover 56 is attached to the suspension bolt 16,
56 comes into contact, and the carriage 14 automatically returns to the original position. Therefore, since the rollers 38 do not contact the suspension bolts 16, the transport vehicle 14 runs stably.

Further, in the above-described embodiment, the carriage 14 may be automatically driven by attaching an actuator to the carriage 14.
For example, the motor for rotating the roller 38 is
When attached to the, it can automatically carry the load.

In the above-described embodiment, an example has been described in which a load is hung by a single transport trolley 14. However, the present invention is not limited to this.
4, 14, ... may be conveyed.

Further, the structure of the link mechanism is not limited to the above-described embodiment, and the load of the load suspended on the eyebolt 18 is reduced to the force by which the pair of holding members 20, 20 hold the rail 12. What is necessary is just to convert.

FIG. 13 is a perspective view showing the transport device 60 when the rail 62 is installed using L-shaped steel.

As shown in the figure, the rail 62 is constructed by hanging an L-shaped steel upside down.

The carrier 64 is mainly composed of a base plate 66 and a back plate 68. At both edges of the back plate 68, fixed plates 69 are erected, and a shaft 70 is provided between the fixed plates 69. A rotating plate 67 having a circular hole (not shown) is provided upright at both edges of the base plate 66, and the shaft 70 is inserted through the circular hole of the rotating plate 67. Thus, the base plate 66 and the back plate 68 are rotatably connected about the shaft 70.

An arm 72 is rotatably attached to the back plate 68 via a shaft 86, and a thumbscrew 74 is screwed to the tip of the arm 72. A stop plate 88 is erected on the base plate 66.
Screw hole 76 into which the thumb screw 74 is screwed (see FIG. 14)
Are formed. Therefore, when the arm 72 is turned and the thumb screw 74 at the tip is screwed into the screw hole 76, the back plate 68 and the base plate 66 can be fixed. The back plate 68 and the base plate 66 are fixed at orthogonal positions.

At the end of the base plate 66, a pair of roller sets 78, 78 are provided. The pair of roller sets 78, 78 are arranged at intervals so that the vertical portion of the rail 62 can be inserted. Further, two rollers 80 are rotatably attached to the roller sets 78, respectively. When the rails 62 are inserted between the pair of roller sets 78, 78, the rollers 80 come into contact with the rails 62. Further, a roller set 82 in which a roller 84 is rotatably provided is attached to the back plate 68.

Next, the operation of the transport device 60 configured as described above will be described.

As shown in FIG. 14 (a), the transport device 60 first removes the thumbscrew 74 at the tip of the arm 72, opens the base plate 66 and the back plate 68, and sets a pair of roller sets 78. , 78 between the vertical portions of the rails 62.

Next, as shown in FIG.
After the back plate 68 is rotated until the base plate 8 and the base plate 66 are orthogonal to each other, the thumb screw 74 at the tip of the arm 72 is screwed into the screw hole 7.
6, and the back plate 68 and the base plate 66 are fixed.
As a result, the carriage 64 is attached to the rail 62, the rollers 80 of the pair of roller sets 78, 78 abut against the vertical portion of the rail 62, and the roller set 7
Eight rollers 80 contact the upper surface of the horizontal portion of the rail 62. Then, the load is suspended on the shaft 70 via a wire or the like, and the transport cart 64 is moved along the rail 62 to transport the load.

After the transport of the load is completed, the transport truck 64 can be easily removed from the rail 62 by loosening the thumb screw 74 to release the fixing between the back plate 68 and the base plate 66.

As described above, the transport device 60 is provided with the transport vehicle 6
4 can be easily attached to and detached from the rail 62. Also,
Since the base plate 66 and the back plate 68 are securely fixed by the thumb screws 74, the transport vehicle 64 can hang heavy loads without falling off the rails 62.

Further, since the L-shaped steel is used for the rail 52 of the transport device 50, it is easy to add the rail 52 and to bend a corner or the like.

The method of fixing the back plate 68 and the base plate 66 is not limited to the above-described embodiment. For example, a hexagonal screw or the like may be used instead of the thumb screw 74 for fixing the arm 72. Is also good. As shown in FIG. 15, when a groove 88 is formed in the arm 72 and the thumb screw 74 is guided in the groove 88, the back plate 68 and the base plate 66 can be connected only by loosening the thumb screw 74 slightly. The fixation can be released. Further, as shown in FIG. 16, a groove 88 may be formed in the arm 72, and a fastener 90 may be used instead of the thumbscrew 74. In this case, a leaf spring 92 for preventing the stopper 90 from dropping out of the groove 88 may be provided.

[0051]

As described above, according to the transport device of the present invention, the link mechanism for converting the load of the load suspended on the suspension into a force for clamping the rail by the pair of clamping members is used. The carriage can be reduced in size and weight. Further, according to the present invention, since the structure is simple using the link mechanism, the carrier can be easily attached to and detached from the rail.

[Brief description of the drawings]

FIG. 1 is a perspective view of a transport device according to a first embodiment.

FIG. 2 is a side view of the carriage shown in FIG. 1;

FIG. 3 is a front view of the transport trolley shown in FIG. 1;

FIG. 4 is a perspective view showing a distal end portion of the arm shown in FIG. 1;

FIG. 5 is an assembly view showing the structure of the distal end of the arm shown in FIG. 1;

FIG. 6 is an explanatory diagram illustrating the operation of the transport trolley according to the first embodiment.

FIG. 7 is a side view showing a carriage having a different shape from that of FIG. 2;

FIG. 8 is a side view showing a carriage having a different shape from that of FIG. 2;

FIG. 9 is a perspective view showing a carriage having a different shape from that of FIG. 1;

FIG. 10 is a perspective view showing a carriage having a different shape from that of FIG. 1;

FIG. 11 is a perspective view showing a carriage having a different shape from that of FIG. 1;

FIG. 12 is a perspective view of a carrier with a cover attached.

FIG. 13 is a perspective view of a transport device using a rail having a shape different from that of FIG. 1;

FIG. 14 is an explanatory view illustrating the operation of the transport device shown in FIG.

FIG. 15 is a side view showing an arm having a shape different from that of FIG. 11;

FIG. 16 is a side view showing an arm having a shape different from that of FIG. 11;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Transportation device (of 1st Embodiment), 12 ... Rail, 14 ... Transportation trolley, 18 ... Eyebolt, 20 ... Nipping member, 22,24,26,28 ... Link, 30,32,3
4, 36 ... axis

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuaki Hata 1-13-4 Kita Otsuka, Toshima-ku, Tokyo Japan Seimei Otsuka Building Within Hitachi Plant Construction Software (72) Inventor Noriharu Yokoyama Chiyoda-ku, Tokyo 1-11-1 Uchikanda, Hitachi Plant Construction Co., Ltd. (72) Inventor Masaki Hayatsu 1-11-1 Uchikanda, Chiyoda-ku, Tokyo Inside Hitachi Plant Construction Co., Ltd.

Claims (4)

[Claims] 1. A transport device for installing a rail above a load transport track, suspending the load on the rail via a transport truck, and transporting the load by moving the transport truck along the rail. The carrier has a pair of holding members for holding the rail via a rotatably supported roller; a hanging portion for hanging the load; and a pair of holding members for opening and closing. The pair of holding members and the hanging portion are connected so as to be free, and the load of the load suspended on the hanging portion is converted into a force for holding the rail by the pair of holding members. A transport device comprising: a link mechanism configured to: 2. The transport device according to claim 1, further comprising an angle adjusting mechanism for adjusting an angle of a rotation shaft of the roller. 3. The transport device according to claim 1, wherein the link mechanism is provided with a lock mechanism for locking an opening and closing operation of the pair of holding members. 4. The link mechanism connects four links by four axes so as to form a parallelogram.
The suspension is provided on one of the shafts, and the end of the link is extended on the shaft side facing the shaft, and the holding member is disposed at the end. The transport device according to claim 1, 2 or 3, wherein