JPH0672539A - Cargo transport device - Google Patents

Abstract

PURPOSE:To prevent generation of frictional sound at a vertical route part and others and to realize travelling with less sound by making a side run-out preventive roller of resin without rubber elasticity. CONSTITUTION:A travel carriage 1 consists of a main body 40 guided by a travel rail and a conveyor 60 for classification provided on its upper part, and it travels on a specific route at specified speed by using attraction force and resiliency of a magnet by a linear motor 30 and a secondary conductor 42. This travel carriage has a roller for travelling placed on the upper surface of the travel rail, left and right upper part side run-out preventive rollers 47 facing the upper part both side surfaces of the rail for travelling and left and right lower part side run-out preventive rollers 51 facing the lower part both side surfaces of the travel rail. By making the lower part side run-out preventive rollers 51 with large vertical motion against the travel rail of resin without rubber elasticity like nylon, frictional sound is scarcely generated even when the travel carriage 1 slides in the vertical direction against the both side surfaces of the travel rail.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, sorts an object to be transported, which is carried by a trolley that can travel on a fixed route, out of a plurality of sorting positions preset in the route. The present invention relates to a load carrying device which is used to pay out laterally at a position.

[0002]

2. Description of the Related Art Conventionally, as a load carrying device of this type, a structure disclosed in Japanese Patent Laid-Open No. 2-182611 has been provided. As shown in FIG. 8, this conventional structure is provided with a traveling rail 80 having a C-shaped cross section, and a traveling carriage 81 which is supported and guided by the traveling rail 80 and can travel freely on a certain traveling route.

This traveling carriage 81 has a movable body 82 having a shape straddling the traveling rail 80 as a main body, and the traveling body 82 is provided with a traveling rail.
Traveling roller 83 supported on the upper surface of 80 and traveling rail
An upper side roller 84 opposed to both upper side surfaces of 80 and a lower side roller 85 opposed to both lower side surfaces of the traveling rail 80 are provided, and the movable body 82 is conveyed laterally in the left-right and lateral directions with respect to the traveling direction. A sorting conveyor 86 is provided. Further, a roller is provided on the outer side surface of the movable body, and a traveling force is applied to the traveling carriage 81 by fitting this roller with a screw.

The front and rear of the traveling carriage 81 are connected by a connecting mechanism 87 to form a group by grouping a plurality of vehicles. One of the traveling carriages 81 of this group is provided on the inner surface of the traveling rail 80. A current collector is provided that receives power from the power supply rail installed along the line. Further, the other traveling vehicles 81 in the group are supplied with electric power from the traveling vehicles 81 provided with current collectors via a wiring line.

With the above-described load carrying device, the traveling carriage 81 is supported and guided by the traveling rollers 83 with respect to the traveling rail 80, and is traversed by the upper and lower guide rollers 84 and 85 while preventing lateral shake. Here all rollers 83, 84, 85
Is made of urethane in consideration of wear resistance.

[0006]

In the above-described load carrying device, since all the rollers are made of urethane, a frictional noise is generated especially in the up and down vertical path portions. That is, the traveling carriage 81 is designed so that a small gap h is formed between the lower surface of the traveling rail 80 and the lower guide roller 85 in the horizontal path portion 88. Then, in the up (down) vertical path portion 89, the movable body 82 inclines so as to form an angle Θ with respect to the vertical line 90 from the traveling roller 83, and thus the lower guide is provided so that a large distance H is obtained. The roller 85 is displaced relatively upward with respect to the traveling rail 80.

At this time, the displacement amount of the upper guide roller 83 is small because the distance is short, but the displacement amount (H-h) of the lower guide roller 85 is large, and thus the lower guide roller 83 in the vertical path portion 89. The roller 85 moves upward at high speed and comes into sliding contact with the side surface of the traveling rail 80. Here, since the lower guide roller 85 is made of urethane, a frictional noise is generated by this sliding contact operation.

Further, since a roller provided on the outer side surface of the movable body 82 is fitted to the screw to give a traveling force to the traveling carriage 81, the traveling drive unit and the traveling rail 81 by this fitting are provided.
A large amount of noise is generated in the traveling support part due to the above, and further damage and wear are caused by the fitting, and maintenance management must be frequently performed. Since the traveling drive unit is provided in one place, concentration is applied to the place where the traveling drive unit is arranged, and the whole traveling cannot be performed smoothly. Furthermore, the arrangement of the traveling drive unit is restricted, and the position is changed. Is not easy.

The object of the present invention is to prevent frictional noise in the vertical path portion and the like, and to make the drive sources low in noise and easy to maintain and maintain, and the drive sources can be arranged in a dispersed manner. At the same time, it is another object of the present invention to provide a load carrying device whose arrangement position can be arbitrarily and easily set and changed.

[0010]

In order to achieve the above object, a load carrying device according to the first aspect of the present invention comprises a traveling rail and a traveling carriage guided by the traveling rail and provided with a sorting conveyor at an upper portion thereof. , This traveling carriage includes traveling rollers mounted on the upper surface of the traveling rail, left and right upper shake-out preventing rollers facing the upper side surfaces of the traveling rail, and lower left and right sides opposing the lower side surfaces of the traveling rail. A lateral shake prevention roller is provided, and at least the lower lateral shake prevention roller is made of resin having no rubber elasticity.

In the load carrying device according to the second aspect of the present invention, linear motors are attached to a plurality of points on one side of the traveling rail, and power feeding rails are provided on the other side of the traveling rail. A conductor and a current collector that receives power from the power supply rail are provided.

[0012]

According to the structure of the first aspect of the present invention described above, the traveling carriage travels on the traveling rail in a state where it is supported and guided by the traveling rollers and the lateral shake is prevented by the upper and lower lateral shake preventing rollers. . And since the lower lateral shake prevention roller, which has a large vertical movement with respect to the traveling rail, is made of resin that does not have rubber elasticity, friction noise is not generated even when sliding vertically on both sides of the traveling rail. Become.

Further, according to the structure of the second aspect of the present invention, the traveling carriage travels at a predetermined speed by utilizing the attractive force and repulsive force of the magnet by the linear motor and the secondary conductor. At that time, power is supplied from the power supply rail via the current collector, and the sorting conveyor is rotated in the normal or reverse direction, whereby the load on the sorting conveyor can be discharged.

Since the above-described traveling is a non-contact linear motor system having no rotating portion, it can be performed with almost no noise, vibration, failure, etc., and maintenance management can be easily performed. Further, the linear motor and the power feeding rail can be easily connected to the traveling rail, the linear motors can be arranged in a distributed manner, and the arrangement can be easily set and changed to an arbitrary position.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In FIG. 7, reference numeral 1 denotes a traveling carriage that can travel on a fixed route while being connected to each other.
There is provided a sorting conveyor 60 for transporting the articles, and by driving the sorting conveyor 60, the load 2 is discharged to a plurality of sorting chutes 3 provided along a fixed route.

As shown in FIGS. 1 to 5, the traveling carriage 1 is
The traveling rail 10 that guides is made of an extruded material of aluminum, and has first dovetail groove portions 11A, 11B, second dovetail groove portions 12A, 12B, and third
The dovetail grooves 13A and 13B and the fourth dovetail grooves 14A and 14B are symmetrically formed over the entire length, and the third dovetail grooves 13A and 13B are further formed.
Recessed grooves 15A and 15B are formed between and the fourth dovetail groove portions 14A and 14B.

The traveling rail 10 is arranged in a monorail type above a pair of base frames 4, and a plurality of positions in the length direction are supported by the base frame 4 side via rail supports 20. Base frame 4
Are installed on the floor via legs 5 provided at predetermined intervals.

The rail support 20 is made of casting,
An upside-down connecting portion and a left-right direction base portion are formed in an inverted J shape. Then, the upper part of the connecting portion is formed on the flat plate portion 21 in the vertical direction, and the groove 15A,
A convex portion that can be fitted into 15B is formed, and bolt holes 22 are formed at a plurality of locations around the convex portion. The traveling rail 10 can be fixed to the rail support 20 by screwing a bolt 23, which is passed through the bolt hole 22 from the lateral outside, into a plate nut 24.

The traveling rail 10 is arranged in an oval shape, and thus the fixed route is a pair of parallel straight line route portions 25 and a semicircular curved route connecting the start and end ends of these straight line route portions 25. Formed from section 26. A vertical path portion 27 for down and up is formed at a predetermined position of the linear path portion 25.

A linear motor 30 is formed by using the first dovetail groove portion 11A and the fourth dovetail groove portion 14A on one side surface of the traveling rail 10, that is, on a side surface opposite to the connecting surface of the rail support 20 at a plurality of locations. Is mounted so that its position can be changed in the rail length direction. That is, a mounting bracket 31 is provided on the back side of the linear motor 30, and a bolt hole 32 is formed in this mounting bracket 31. And the first dovetail groove 11A
After the plate nut 33 is slidably positioned between the plate nut 33 and the fourth dovetail groove portion 14A, the mounting bracket 31 is brought into contact with one side surface, and then the bolt 34 passed from the outside into the bolt hole 32 is attached to the plate nut 33.
The linear motor 30 can be attached to one side surface of the traveling rail 10 by screwing the linear motor 30 on the side surface of the traveling rail 10.

At this time, by loosely tightening the bolts 34, the linear nut 30 is slid inside the first dovetail groove portion 11A and the fourth dovetail groove portion 14A, and the linear motor 30 is moved to the rail length. It can be repositioned in the direction, and after reaching the desired position, the bolt 34 can be tightened to achieve the desired installation.

On the other side of the traveling rail 10, the second
The power feeding rail 35 is provided by using the dovetail groove portion 12B. That is, a protective rail 36 is provided on the other side surface of the traveling rail 10, and the protective rail 36 is fixed to the other side surface of the traveling rail 10 via a nut 37 and a bolt 38 provided in the second dovetail groove portion 12B. It On the outer side surface of the protective rail 36, four power supply rails 35 including a three-phase AC power supply line and a ground line are arranged.

As shown in FIGS. 1 to 3, the traveling carriage 1 includes a main body 40 guided by the traveling rail 10 and a main body 40.
It consists of a sorting conveyor 60 provided on top of 40. The main body 40 has a pair (a plurality) of C-shaped frames 41 in the traveling direction when viewed from the traveling direction. Here, both frames 41 are manufactured in the same shape by casting, and the inverted L-shaped member 41a
And a horizontal member 41b that is integrated with the lower end of the inverted L-shaped member 41a via a fixing tool to form a C-shape.

Then, the front and rear edges of the square plate-shaped secondary conductor 42 are fixed to the inner surface of the vertical rod portion of the inverted L-shaped member 41a by a fixing tool, and the front and rear edges of the plate 43 are fixed to the inverted L-shaped member 41.
By fixing it to the upper surface of the horizontal rod of a with a fixing tool, both frames 41 are separated from each other in the running direction by a secondary conductor 42.
And the plate 43 are integrated.

An upper bracket 46 is rotatably provided at the end of the horizontal rod portion of each inverted L-shaped member 41a via a vertical pin 45, and these upper brackets 46 are provided above the traveling rail 10. A pair of left and right upper lateral shake preventing rollers 47, which are opposed to each other on both sides, and a traveling roller 48 mounted on the upper surface of the traveling rail 10 are provided. Here, the upper runout prevention roller
47 is made of urethane, which is an example of a resin having rubber elasticity, and the running roller 48 is also made of urethane.

A lower bracket 50 is rotatably provided at an end of the horizontal member 41b via a vertical pin 49. The lower bracket 50 is opposed to both side surfaces of the lower portion of the traveling rail 10. A pair of left and right lower lateral shake prevention rollers 51,
An uplifting prevention roller 52 is provided on the lower surface of the traveling rail 10 so as to be opposed thereto. Here, the lower lateral shake prevention roller 51
Is made of nylon, which is an example of a resin having no rubber elasticity, and the floating prevention roller 52 is made of urethane.

The sorting conveyor 60 provided on the upper portion of the main body 40 thus constructed is composed of a pair of front and rear frames 61 and a conveyor device 62 arranged between the frames 61, and the frame 61 is the main body. It is connected to 40. The conveyor device 62 includes a drive pulley 63, a driven pulley 64, an endless belt 65 stretched between the pulleys 63, 64, a servo motor 66, and the rotation of the servo motor 66.
It consists of a transmission device 67 etc.

The traveling vehicles 1 configured as described above are connected to each other by the connecting device 70 and travel on a fixed route in the form of an endless train. That is, the coupling device 70 includes the vertical pin 45 at the rear end of the preceding traveling vehicle 1 and the vertical pin 45 at the front end of the following traveling vehicle 1.
It is provided between 45 and the connecting rod 71 with adjustable length
By connecting both ends of the to the vertical pin 45 through the spherical bearing 72, the desired connection is achieved.

As shown in the circuit configuration of FIG. 6, the traveling vehicles 1 form a group of every five vehicles, and only the leading traveling vehicle (hereinafter referred to as a parent vehicle) 1A in the traveling direction A has its group. Servo motor 66 from the power supply rail 35 to the upper bracket 46.
A current collector 68 is provided to receive power (eg, FIG. 2).
reference). Then, power is supplied from the parent trolley 1A to another traveling trolley (hereinafter referred to as a child trolley) 1B of the group via a wiring line 73. 75 is a carry-in conveyor, and the load 2 is carried in with the carry-in conveyor 75 connected to the sorting conveyor 60.

In the above embodiment, the traveling vehicle 1 travels at a predetermined speed on a certain route by utilizing the attractive force and repulsive force of the magnet by the linear motor 30 and the secondary conductor 42. This traveling is carried out with respect to the traveling rail 10 while being supported and guided by the traveling rollers 48, the lateral shake preventing rollers 47 and 51 prevent lateral shake, and the floating preventing rollers 52 prevent lifting. .

During traveling, the upper lateral shake preventing roller 47, the traveling roller 48, and the floating preventing roller 52, which are made of urethane, which is an example of a resin having rubber elasticity, quietly roll, so that no noise is generated. . Further, in the vertical path portion 27, the lower lateral shake preventing roller 51, which has a large vertical movement with respect to the traveling rail 10, is made of nylon, which is an example of a resin having no rubber elasticity.
Friction noise is not generated even if it slides vertically on both sides of 10.

Then, in the state where the servo motor 66 is supplied with power from the power supply rail 35 through the current collector 68 or the wiring line 73, according to the signal sent to the control device,
The servo motor 66 can be rotated normally or reversely through the control device, and the load 2 on the belt 65 can be discharged to the sorting chute 3. The load 2 is carried in from the carry-in conveyor 75 to the sorting conveyor 60. Such traveling can be performed with almost no noise, vibration, or failure due to the linear motor system having no rotating portion.

As described above, the cost can be reduced by not providing the collector 68 on the sub-carriage 1B, and the maintenance work due to the abrasion of the collector 68 can be reduced. Further, by providing and connecting the ground wire, it is possible to prevent electric shock to the human body due to static electricity generated when the traveling vehicle 1 travels, and to ensure safety.

In the above embodiment, only the lower lateral shake preventing roller 51 is made of nylon which is an example of a resin having no rubber elasticity.
Part or all of the running roller 48 and the floating prevention roller 52 may be made of nylon. In this case, in addition to preventing the above-mentioned frictional noise, it is advantageous in terms of cost.

[0035]

According to the first aspect of the present invention having the above-described structure, the traveling carriage can travel with respect to the traveling rail while being supported and guided by the traveling rollers, and in which lateral shake is prevented by the upper and lower lateral shake preventing rollers. . Even while the vehicle is traveling, especially in the up / down vertical path, even if the lower lateral shake prevention roller slides largely against the both sides of the traveling rail at high speed in the vertical direction, the lower lateral shake preventive roller does not move. Since it is made of resin that does not have elasticity, it does not generate friction noise,
It is possible to drive with less noise.

Further, according to the second aspect of the present invention having the above-mentioned structure, since the traveling carriage is driven by a non-contact linear motor system having no rotating portion, noise, vibration, failure and the like are hardly generated as a whole, and maintenance is performed. It can be easily managed. Further, the driving sources by the linear motors can be arranged in a distributed manner, the entire traveling can be smoothly performed, and the arrangement can be easily set and changed to an arbitrary position.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a load carrying device according to an embodiment of the present invention.

FIG. 2 is a front view of the traveling rail portion.

FIG. 3 is a side view of the cargo transport apparatus.

FIG. 4 is a schematic side view showing the entire route.

FIG. 5 is a schematic plan view showing the entire route.

FIG. 6 is a power supply circuit diagram of the same cargo carrier.

FIG. 7 is a partial perspective view of the cargo transport apparatus.

FIG. 8 is a schematic side view of a main part of a load carrying device showing a conventional example.

[Explanation of symbols]

 1 Traveling trolley 3 Sorting chute 10 Traveling rail 20 Rail support 25 Straight path 26 Curved path 27 Vertical path 30 Linear motor 35 Power supply rail 40 Main body 42 Secondary conductor 47 Upper lateral runout prevention roller 48 Running roller 51 Lower lateral runout Anti-roller 52 Lifting anti-roller 60 Sorting conveyor 62 Conveyor device 68 Collector 70 Coupling device 75 Carry-in conveyor

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B65G 54/02 9245-3F // B65G 47/52 101 Z 8010-3F

Claims (2)

[Claims] 1. A traveling rail, and a traveling carriage guided by the traveling rail and provided with a sorting conveyor at an upper portion thereof. The traveling carriage comprises traveling rollers mounted on an upper surface of the traveling rail, It has left and right upper lateral shake prevention rollers facing both upper side surfaces of the traveling rail, and left and right lower lateral shake preventing rollers facing both lower side surfaces of the traveling rail, and at least the lower lateral shake preventing rollers have rubber elasticity. A load carrying device characterized by being made of non-resin. 2. A linear motor is attached to a plurality of locations on one side of the traveling rail, and a power feeding rail is provided on the other side of the traveling rail. The traveling carriage receives power from a secondary conductor that can be opposed to the linear motor and the power feeding rail. The load carrying device according to claim 1, further comprising a current collector.