JPH0885695A - Rail connection structure and rail connection pin - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a rail connecting structure in which rails can be easily connected in a state of being aligned and a pin for the alignment can be easily attached to the rail. [Structure] The assembly rail 21 and the retracting rail 6 are formed by extrusion molding, and at the time of the extrusion molding, both rails 21, 6 are formed.
First and second through holes 29, 6a are formed in each of these. A pin 31 is fitted into the opening of the first through hole 29 on the side of the retracting rail 6 so as to project from the assembly rail 21. Then, the pin 31 protruding from the assembly rail 21
The assembly rail 2 by inserting the
1 and the evacuation rail 6 are connected in the aligned state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail connecting structure and a rail connecting pin.

[0002]

2. Description of the Related Art Generally, in a factory or the like where a space for installing a transfer device is limited, a traveling rail is hung and supported on a ceiling.
The work is carried by running the ceiling guided vehicle along the running rail.

As shown in FIG. 4, an overhead carriage 2 is suspended from a traveling rail 1 suspended and supported on the ceiling of a factory or the like. The traveling rail 1 is curved so that its one end and the other end face each other and has a substantially elliptical shape, and is movable between one end and the other end of the traveling rail 1 in a direction orthogonal to the traveling rail 1. The slide device 3 is provided. On the lower surface of the slide device 3, a branch rail 4 is provided that extends so as to connect one end and the other end of the traveling rail 1. The traveling rail 1 is looped by the branch rail 4, and the ceiling guided vehicle 2 travels on the traveling rail 1 and the branch rail 4. Further, when the slide device 3 is moved, one end of the branch rail 4 is connected to one end of the evacuation rail 6 suspended and supported on the ceiling separately from the traveling rail 1. The other end of the evacuation rail 6 serves as an entrance for the ceiling guided vehicle 2 to enter the traveling rail 1.

By the way, the assembly and repair of the ceiling guided vehicle 2 are carried out by using the assembly frame 15 shown in FIG.
The assembly frame 15 is composed of a pair of upper and lower frames 16 and 17, and a connecting frame 18 connecting the two frames 16 and 17. Lower frame 18
A caster 19 is provided on the lower surface of the, and an assembly rail 21 is suspended and supported by the upper frame 16 via a suspending tool 20. Then, the ceiling guided vehicle 2 is assembled and repaired while the ceiling guided vehicle 2 is suspended on the assembly rail 21.

The ceiling guided vehicle 2 which has been assembled and repaired is mounted on the evacuation rail 6 by using the lift device 7 shown in FIG. The lift device 7 is provided on the floor surface of the factory corresponding to the other end of the evacuation rail 6.
The lift device 7 includes a base 7a, a vertically expandable pantograph lifter 8 provided on the base 7a, and a lift 9 provided at the tip of the lifter 8. The ceiling guided vehicle 2 which has been assembled and repaired is placed on the elevating table 9 together with the assembly frame 15, and is lifted to the evacuation rail 6 by extending the lifter 8. Then, the extension of the lifter 8 is stopped so that the assembly rail 21 on which the ceiling guided vehicle 2 is suspended is located at the same height position as the retracting rail 6. In this state, the assembling frame 15 is moved to align one end of the assembling rail 21 with the other end of the retreat rail 6, and then the ceiling-type guided vehicle 2 of the assembling rail 21.
Is moved to the evacuation rail 6.

At this time, the slide device 3 is moved so that the branch rail 4 is located on the side of the evacuation rail 6, and the ceiling carrier 2 of the evacuation rail 6 is moved to the branch rail 4. After that, by moving the slide device 3 so that the branch rail 4 is located on the traveling rail 1 side, the ceiling guided vehicle 2
Are moved to the traveling rail 1.

However, since the heavy ceiling carrier 2 is suspended on the assembly rail 21, the assembly rail 2
A large load from the ceiling carrier 2 is applied to 1. Therefore, unless the positions of the assembly rail 21 and the evacuation rail 6 are surely aligned, the transportation vehicle 2 may be derailed when the ceiling transportation vehicle 2 is moved from the assembly rail 21 to the evacuation rail 6.

Therefore, it can be considered to apply the rail connecting device shown in Japanese Utility Model Laid-Open No. 63-154590 to the assembly rail 21 and the retracting rail 6. That is, the assembly rail 2
A concave groove portion extending in the same direction as the rails 21 and 6 is formed on both upper and lower surfaces of the rail 1 and the escape rail 6, respectively. Furthermore,
A plate-like connecting member is inserted into each of the pair of upper and lower concave groove portions of the assembly rail 21, and both connecting members are assembled.
It is attached and fixed to the assembly rail 21 with a bolt or the like in a state of being projected from one end of the. Then, by fitting the pair of connecting members into the recessed groove portions of the evacuation rail 6, respectively, the assembly rail 21 and the evacuation rail 6 are connected to each other in a surely aligned state, and the ceiling guided vehicle 2 is prevented from derailing. can do.

[0009]

However, in the rail connecting structure, the connecting member has to be attached and fixed to the assembly rail 21 with bolts or the like, so that the attaching operation of the connecting member is troublesome.

Further, when the connecting member is fitted into the concave groove portion, a large load is applied to the assembly rail 21 by the ceiling carrier 2, so that it is difficult to move the assembly frame 15 delicately. Therefore, there is a problem that it takes time to align the rails 21 and 6 for fitting the connecting member and the recessed groove portion.

Further, since a pair of connecting members must be inserted into the concave groove portions, respectively, there is a problem that it takes time and effort to connect both rails 21 and 6. The present invention has been made to solve the above problems, and an object thereof is to easily connect rails in a state of being aligned and to easily attach a pin for the alignment to the rails. (EN) Provided is a rail connecting structure and a rail connecting pin.

[0012]

In order to solve the above problems, in the invention according to claim 1, a carrier vehicle supported by either one of the first rail and the second rail is mounted on the other rail. In order to get in the second end of the first rail,
In a rail connecting structure for connecting both rails in accordance with the position of the end surface of the rail, a first round hole is formed in the end surface of the first rail, and a pin is provided in the first round hole for the first rail. A second round hole for inserting the pin was formed in the second rail so as to be fitted so as to project from the end face.

According to a second aspect of the present invention, in the rail connecting structure according to the first aspect, a tapered portion is formed at a tip end portion of the pin, the diameter of which decreases toward the tip end of the pin. According to a third aspect of the invention, in the rail connecting structure according to the first or second aspect, the first and second round holes are respectively formed into the first and second round holes.
And only one was formed on the second rail.

According to a fourth aspect of the present invention, for connecting rails for connecting both rails when a carrier vehicle supported by one of the first rail and the second rail is loaded on the other rail. In the pin, a tapered portion is formed at the tip of the columnar pin body so as to decrease in diameter toward the tip, and a flange portion is provided at the center of the pin body in the longitudinal direction so as to project from the outer peripheral surface of the pin body.

[0015]

Therefore, according to the first aspect of the invention, the first round hole is formed in the end surface of the first rail, and the pin projects from the end surface of the first rail in the first round hole. Be fitted. Then, by fitting the pin into the second round hole formed in the second rail, the first rail and the second rail are connected in a aligned state. Also, the pin is the first
Since it is attached to the first rail simply by fitting it into the round hole, the pin can be attached to the first rail without performing a laborious attachment work unlike the conventional case.

According to the second aspect of the invention, in addition to the action of the first aspect of the invention, the tip of the pin fitted in the first round hole of the first rail is compressed toward the tip of the pin. A tapered portion is formed that has a diameter. Then, with the first rail and the second rail displaced from the proper positions,
When it is inserted into the second round hole of the rail, the inner peripheral surface of the opening of the second round hole comes into contact with the tapered portion. Further, as the pin is further inserted into the second round hole, the tapered portion is pushed by the inner peripheral surface of the opening of the second round hole in the direction to move the first rail toward the proper position. As a result, the displacement of the pin with respect to the second round hole is absorbed while the pin is fitted into the second round hole, and when the pin is completely fitted into the second round hole, the first rail and the second The rail and the rail are connected in the aligned state. Therefore, it is possible to easily align the first rail and the second rail.

According to the invention of claim 3, claim 1 or 2
In addition to the operation of the invention described above, the pin is fitted into the first round hole formed only in the first rail so as to project from the end surface of the first rail. Then, only one pin protruding from the first rail is formed on the second rail and the second pin is formed on the second rail.
Both rails can be easily connected by inserting it into the round hole. Further, since the carrier vehicle only gets on the other rail from the supported rail, both rails can be connected with sufficient accuracy with only one pin.

According to the fourth aspect of the present invention, the pin is attached to the rail by inserting the side opposite to the tapered portion of the pin into the flange of the pin body into the round hole formed in the rail. And the taper side of the pin into the round hole of another rail,
If both rails are inserted in a state of being displaced from each other, the inner peripheral surface of the opening of the round hole comes into contact with the tapered portion. Further, as the pin is inserted further into the round hole, the tapered portion is pushed by the inner peripheral surface of the opening of the second round hole. As a result, when the pin is completely fitted in the round hole, both rails are connected in a state of being aligned with each other, and it is possible to easily align the both rails.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in an assembly rail and a retracting rail of a ceiling type transportation system will be described with reference to FIGS.
Follow the instructions below. In this embodiment, only the connecting structure of the assembly rail and the retracting rail and the rail connecting pin are different from the conventional ones, and the same parts as the conventional ones are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in FIG. 1, in the present embodiment, an assembling rail 21 as a first rail is suspended from an upper frame 16 of the assembling frame 15 by a suspending tool 20. Then, the ceiling transport vehicle 2 as a transport vehicle is suspended by the assembly rail 21, and the ceiling transport vehicle 2 is assembled and repaired.

The ceiling guided vehicle 2 which has been assembled and repaired is placed on the workbench 9 of the lift device 7 together with the assembly frame 15. Then, by extending the lifter 8 of the lift device 7, the assembly rail 21 is lifted to the same height position as the retractable rail 6 as the second rail suspended and supported on the ceiling as shown by the chain double-dashed line. You can do it.

As shown in FIG. 2, the assembly rail 21 is formed by extrusion molding so as to have a substantially U-shaped cross section, and connects a pair of upper and lower plates 25 and 26 to each other. It is composed of a connecting plate 27. One end of the upper plate 25 projects downward toward the lower plate 26 and the upper plate 25
An upper flange 28 extending along the upper flange 28 is formed, and a first through hole 29 as a first round hole extending in the same direction as the flange 28 is formed in the upper flange 28. This first
The through hole 29 is formed at the same time when the assembly rail 21 is formed by extrusion molding. Further, on the upper surface of the lower plate 26, a lower flange 30 is formed at a position corresponding to the upper flange 28 so as to project toward the upper plate 25 and extend along the lower plate 26.

The retracting rail 6 is constructed similarly to the assembly rail 21, and the portion of the assembly rail 21 corresponding to the first through hole 29 has the first through hole 2 as shown by the broken line in FIG.
A second through hole 6a as a second round hole similar to that of 9 is formed. Then, in the escape rail 6, as for the same parts as the other assembly rails 21,
The same reference numerals are given to omit detailed description.

As shown in FIG. 3, a pin 31 is fitted in the opening of the first through hole 29 on the retracting rail 6 side. The pin body 31a that constitutes the pin 31 is formed in a cylindrical shape. A flange portion 32 protruding along the outer periphery is formed at the center of the pin body 31a in the longitudinal direction, and a taper portion 33 is formed at the tip of the pin body 31a, the diameter of which decreases toward the tip thereof.
Are formed. The proximal end side of the flange portion 32 of the pin 31 is fitted in the first through hole 29, and the distal end side of the pin 31 of the pin 31 projects from the first through hole 29.

Next, the above ceiling carrier 2 is moved to the traveling rail 1.
The operation of connecting the assembly rail 21 and the escape rail 6 to get on the vehicle will be described. By extending the lifter 8 of the lift device 7, the workbench 9 is raised to bring the height position of the assembly rail 21 to the same height position as the retracting rail 6. Then, the assembly frame 15 is moved so that the pin 31 of the assembly rail 21 is located on the same axis line of the second through hole 6 a of the escape rail 6.

At this time, the ceiling rail vehicle 2 is mounted on the assembly rail 21.
Due to the large load caused by
There is a case where the movement of 5 cannot be finely adjusted and the pin 31 is slightly deviated from the axis of the second through hole 6a. Then, with the pin 31 displaced from the axis of the second through hole 6a, the assembly frame 15 is moved toward the retracting rail 6 to insert the pin 31 into the second through hole 6a. Then, the second through hole 6 is formed in the tapered portion 33 of the pin 31.
The inner peripheral surface of the opening of a contacts. Furthermore, as the pin 31 is inserted into the inner side of the second through hole 6a, the tapered portion 33 is moved by the inner peripheral surface of the opening of the second through hole 6a so that the pin 31 moves to the second side.
Is pressed toward the axis of the through hole 6a. As a result, the deviation of the pin 31 from the axis of the second through hole 6a is absorbed while the pin 31 is being fitted into the second through hole 6a. Then, when the pin 31 is completely fitted into the second through hole 6a, the assembly rail 21 and the retracting rail 6 are connected in a properly aligned state.

Further, since the rails 21 and 6 are connected only by inserting one pin 31 into the second through hole, it is easier than inserting a plurality of pins 31 into the plurality of through holes. Both rails 21 and 6 are connected to. Further, since the ceiling guided vehicle 2 only gets into the escape rail 6 from the assembly rail 21, when both rails 21 and 6 are connected with one pin, even if the assembly rail 21 and the escape rail 6 are slightly twisted. Sufficient connection accuracy can be obtained so that the ceiling guided vehicle 2 can be installed.

As described above in detail, according to this embodiment, the first and second through holes 29, 6a are formed at the same time when the assembly rail 21 and the retracting rail 6 are formed by extrusion molding. Therefore, unlike the prior art, it is not necessary to newly form the first and second through holes 29, 6a necessary for connecting both rails 21, 6. Therefore, both rails 21 and 6 can be connected in a aligned state without performing a troublesome process on both rails 21 and 6.

Since the pin 31 is attached to the assembly rail 21 by being fitted in the first through hole 29, the pin 31 can be easily attached to the first assembly rail 21.

Further, in this embodiment, the tapered portion 33 is formed at the tip of the pin 31. Therefore, even if the assembly rail 21 and the escape rail 6 are deviated from proper positions, the pin 3
Both rails 2 by fitting 1 into the second through hole 6a
1, 6 can be easily aligned.

Further, in this embodiment, one rail 31 protruding from the first rail 21 is inserted into the second through hole 6a of the second rail to connect the rails 21 and 6 together. . Therefore, unlike the prior art, both rails 29 and 6 can be easily connected with sufficient connection accuracy.

The present invention is not limited to the above embodiment, but may be embodied by being modified as follows. (1) In this embodiment, the assembly rail 21 and the escape rail 6
Although the first and second through holes 29 and 6a as the first and second round holes are formed in the above, respectively, the first and second holes that do not penetrate the both rails 21 and 6 are formed as recesses instead. You may.

(2) In this embodiment, the first rail of the assembly rail 21 is used.
Although the pin 31 is attached to the through hole 29 of the above, the pin 31 may be attached to the second through hole 6 a of the retracting rail 6. (3) In this embodiment, the pin 31 may not be provided with the tapered portion 33. In this case, the pin 31 can be easily formed.

(4) In the present embodiment, the present invention is embodied in the assembly rail 21 and the evacuation rail 6 of the ceiling type conveyance system, but the present invention may be embodied in a rail laid on the ground, for example.

(5) Although only one pin 31 is provided in this embodiment, a plurality of pins 31 may be provided. In this case, the assembly rail 21 is provided with a plurality of first through holes 29, and the pins 31 are fitted into the through holes 29, respectively. Then, the second through holes 6a may be provided at positions corresponding to the respective first through holes 29 of the escape rail 6. According to this structure, the assembly rail 21 and the retracting rail 6 can be reliably connected.

(6) In this embodiment, the ceiling guided vehicle 2 is loaded onto the retractable rail 6 from the assembly rail 21, but the present invention is not limited to this. That is, a second through hole is provided at one end of the traveling rail 1 or the branch rail 4, the assembly rail 21 is connected to the traveling rail 1 or the branch rail 4, and the ceiling transport vehicle 2
You may let in.

(7) In the present embodiment, the present invention is embodied in a loop type ceiling conveying system in which the traveling rail 1 and the branch rail 4 are loops. Instead, the traveling rail 1 and the branch rail 4 are loops. The invention may be embodied in a reciprocating ceiling transfer system that does not.

Next, other technical ideas which can be understood from the above-mentioned embodiments will be described below together with their effects. The rail connection structure according to claim 1 or 2, wherein the first and second rails are rails in which the first and second round holes are preformed by extrusion molding during rail manufacturing. According to this structure, it is possible to connect the rails in a state in which the rails are aligned with each other without newly performing a complicated process on the rails.

In the present specification, rails are defined to include not only the rails of the ceiling type transportation system but also other rails such as rails laid on the ground.

[0040]

As described above in detail, according to the first aspect of the present invention, the rails can be easily connected in the aligned state, and the pin for the alignment can be easily attached to the rail. You can

According to the invention described in claims 2 to 4, the rails can be easily aligned.

[Brief description of drawings]

FIG. 1 is a side view showing an assembly frame and an assembly rail of this embodiment.

FIG. 2 is a cross-sectional view showing an assembly rail of this embodiment.

FIG. 3 is a perspective view showing a first through hole and a pin of this embodiment.

FIG. 4 is a plan view showing a conventional ceiling type transfer system.

FIG. 5 is a front view showing a conventional assembly frame and lift device.

[Explanation of symbols]

2 ... Ceiling carrier as a carrier, 6 ... Retreat rail as a second rail, 6a ... Second through hole as a second round hole, 21 ... Assembly rail as a first rail, 29 ... 1st through-hole as one round hole, 31 ... Pin, 31a ...
Pin body, 32 ... collar part, 33 ... taper part.

Claims (4)

[Claims] 1. An end surface of the first rail is located at a position of an end surface of the second rail so that a carrier vehicle supported by one of the first rail and the second rail can be loaded on the other rail. In a rail connecting structure for connecting both rails according to the above, a first round hole is formed in the end surface of the first rail, and a pin is projected in the first round hole from the end surface of the first rail. Second for fitting and inserting said pin in the second rail
Rail connection structure with round holes. 2. The rail connecting structure according to claim 1, wherein a tapered portion is formed at a tip end portion of the pin, the taper portion having a diameter reduced toward the tip end of the pin. 3. The rail connecting structure according to claim 1 or 2, wherein only one first and second round hole is formed in each of the first and second rails. 4. A rail connecting pin for connecting both rails when a carrier vehicle supported by either one of the first rail and the second rail is loaded on the other rail, wherein the rail connecting pin has a cylindrical shape. A rail connecting pin, wherein a taper portion is formed at a tip end portion of the pin body, the diameter of which is reduced toward the tip end, and a flange portion projecting from an outer peripheral surface of the pin body is provided at a longitudinal center of the pin body.