JPH01186461A - Rail joint structure for moving body - Google Patents

Abstract

PURPOSE:To facilitate stepless joint of rails by employing rails having rectangular cross-section for supporting and guiding a self-travel truck and forming plural through paths therein, then inserting guide members into the through paths across the facing ends thereof, when rails are jointed, and securing the guide members to the rails. CONSTITUTION:Rails 1 for supporting and guiding a self-travel truck is formed to have rectangular cross-section and flat upper face for receiving a bearing 2, and a dovetail groove 3 having open lower end is formed at the lower section thereof. Upper and lower through paths 4, 5 having rectangular cross-sections are formed in the rail 1 while a plurality of side dovetail grooves 6A-9A, 6B-9B and flat guide faces 10A, 10B for guide rollers are formed at the opposite side sections of the rail 1. When rails 1, 1 are jointed, facing end sections of the rail 1 are cut obliquely, then guide members 18, 20 are inserted across facing through paths 4, 4 and 5, 5 at the joint and portions of the guide members 18, 20 are secured through securing metals 19, 21 to the rail 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rail joint structure for a moving body used for supporting and guiding a self-propelled trolley that can freely travel on a fixed route in a factory, for example. .

BACKGROUND OF THE INVENTION Conventionally, this type of rail has been developed, for example, by
As seen in Publication No. 172451, a type is provided in which a pair of left and right rails for supporting and guiding the wheels of a self-propelled truck are arranged on a machine frame, and guide rollers and a traveling drive device are made to correspond to the rails and the machine frame. has been done.

Here, since the rail is required to be long, the end faces perpendicular to the length direction are opposed to each other, and a joint plate is applied between both sides of the end. A connecting rail was created by fixing the plate and both ends with bolts and nuts.

Problems to be Solved by the Invention According to the above-mentioned conventional type, the connecting plates and bolts/nuts protrude from the outer surface, which adversely affects the running of the self-propelled cart on a fixed route, and the appearance is poor. It becomes bad. Furthermore, when connected, lateral deviations tend to occur between the end portions, and since the connections are made in one piece, expansion and contraction due to temperature differences cannot be absorbed. Moreover, the wheels fall into the gap created between the ends, causing vibrations and noise of the self-propelled cart.

The object of the present invention is to be able to connect the rails without any other objects protruding from the outer surface of the rail, to be able to connect the rails in a state that can absorb expansion and contraction without causing sideways displacement, and to be able to connect the rails in a manner that allows for the connection to be made without any sideways slipping and to absorb expansion and contraction. The object of the present invention is to provide a rail joint structure for a moving body in which the wheels do not become depressed.

Means for Solving the Problems In order to achieve the above object, the rail joint structure for a moving body according to the present invention has a rail that supports and guides the moving body, and has a rectangular cross section, and has a rail joining structure for a moving body that has a rectangular cross section. , a through path is formed around the entire length of each rail, and dovetail grooves that are open to the sides are formed on both sides, and a joint part between the ends of the rail is formed in an inclined cut shape in plan view, and this joint part In this method, a guide material is inserted between opposing through passages, and a part of the guide material is positioned in the dovetail groove on one side. The guide material is placed in the dovetail groove on the other side and is fixed to the other rail using a fastener.

According to the configuration of the present invention, the guide material and the fastening fixture do not protrude from the outer surface of the rail at the joint portion. Also, when the rails expand or contract in the spliced state, one rail will be guided by the guide material fixed to the other rail, and the other rail will be guided by the guide material fixed to one rail. Become.

At this time, the guide surfaces of each guide member are vertically opposite side surfaces. In a plan view, the gap between the end faces of the joint portion is formed to be inclined.

Example An embodiment of the present invention will be described below based on the drawings.

As shown in Fig. 1, the rail 1 has a rectangular cross section, with a flat wheel holder formed on the entire upper surface 2, and a downwardly open lower dovetail groove 3 formed over the entire length at the lower part. are doing. Inside the rail 1, an upper through passage 4 and a lower through passage 5 are formed with a rectangular cross section. Furthermore, at multiple locations (four locations) in the vertical direction on both sides of the rail 1, there are side dovetail grooves 6A, ea, 7A, 7B, 8A, 88 that are open to the sides.
9A and 9B are formed over the entire length, and the uppermost side dovetail grooves 6A and 6B and the second side dovetail groove 7A.

A flat guide roller guide surface 10A is provided between the guide roller 7B and the guide roller 7B.

10B is formed. Here, side dovetail grooves 6A and 6B.

7A, 78.8A, 88.9A, 9B and the guide roller guide surfaces 10A, 10B are formed symmetrically with respect to the center line 11. The rail 1 is a pultruded aluminum product, with dovetail grooves 6A, 68.7A,
7B, 8A, 88.9A.

In case 9B, the upper part is formed vertically asymmetrically so that the recess is large.

As shown in FIGS. 1 to 5, the rails 1 are mounted as a pair of left and right rails on a machine frame 15 at predetermined intervals. That is, a tab plate 16 is inserted into the lower dovetail groove 3, and a tab plate 17 is inserted into the machine frame 15 from below.
rail 1 by aligning it with the tap plate 16 and tightening it.
Fix. Normally, the rail 1 is attached to the machine frame 15 at a joint in the length direction of the rail 1. That is, the end surface 1a of the rail 1 has an inclined cut shape in plan view, and this creates an inclined gap 1 at the joint part.
2, and the tap plate 16 is disposed between both ends. Then, the rectangular bar-shaped upper guide material 18 inserted between the upper through-paths 4 is fixed to one rail end in the length direction with a bolt fixing device (a fixing device for tightening) 19, and the other rail is fixed to the end of the other rail. A lower guide member 20 in the shape of a rectangular rod, which is free at the end and inserted between the lower through passages 5, is fixed to a bolt fixture (a fixture for tightening) 21 at the end of the other rail. The ends are free. At this time, the bolt fixture 19 is located in the side dovetail groove 6A on one side, and the bolt fixture 21 is located in the side dovetail groove 7B on the other side.

A connecting member 25 is attached between opposing sides of both rails 1. This connecting member 25 includes an outer plate 26 that can be freely applied to the inner side of the rail 1, a bottom plate 27 that connects the lower ends of these outer plates 26, and a plurality of (two ) is integrally formed with the inner plate 28 of
These inner plates 28 are positioned higher than the outer plates 26, and a plate portion 29 is integrally connected inward from the upper end. A cover plate 30 is placed between the plate portions 29 of these receivers, and both are integrated with a fixture or the like. Here cover plate 3
The upper surface of 0 has the wheel holder of rail 1 almost the same as surface 2, and both side edges are sufficiently close to rail 1 so as not to hinder the running of a self-propelled trolley (which is an example of a moving object and will be described later). is approaching. As a result, a duct space 31 is formed by the bottom plate 27, both inner side plates 28, and the cover plate 30, and a duct case 32 is disposed within this duct space 31.

33 is a signal line, and 34 is a power line. The outer plate 26 is fixed to the rail 1, for example, on the inner side and on the guide roller guide surface 10A, as shown in FIG.

Lateral dovetails 8A and 88.9A below 1oB.

This can be done by inserting the plate nut 35 into the plate nut 9B, and then tightening the bolt 36 passed through the outer plate 26 from the inside by engaging the plate nut 35. Note that although the fixation is shown in two stages in the vertical direction, this may be in negative stages. As shown in FIG. 1, the outer side 9 of the lowermost side dovetail grooves 9A and 9B
For example, a feeder 1137 or the like can be placed inside the item A, and a detection object 39 is provided inside the item 9B via a fixing member 38 such as a bolt or nut. A power supply device 40 is disposed on the inner surface of the outer plate 26 on one side of the connecting member 25 .

Reference numeral 41 denotes a self-propelled trolley, which has a pair of front and rear driving wheels 43 arranged on one side of the lower surface of its main body 42, and a pair of front and rear idle wheels 44 arranged on the other side. By placing the wheel supports of the rail 1 on the surface 2, the rail 1 can run freely on a fixed path 45.

The surface drive wheels 43 are each attached to a case 46 with an open bottom surface via an axle 47, and the case 46 is connected to the main body 4.
The lower end of a vertical rotation shaft 48 supported on two sides is interposed therebetween. Therefore, the drive wheels 43 can freely pivot around the vertical axis 49. A driving device (such as a motor) 50 is attached to each of the cases 46, and these driving devices 50 are interlocked with the corresponding axle 47. Further, the bracket 51 from the case 46 has a plurality of guide rollers 52 facing the guide roller guide surfaces 10A and 10B of the rail 1.
A, 52B is installed. Both idle wheels 44 are attached to a bracket 53 via an axle 54, and the bracket 53 is attached to a slide plate 5 supported on the main body 42 side.
5 via a vertical shaft 56. That is, the main body 42
A base plate 57 is fixed to the base plate 57, and an oval through hole 58 that is elongated in the width direction of the truck is formed in the base plate 57. A guide rail 59 that is long in the width direction of the bogie is attached to the front and rear of the through hole 58 on the lower surface of the base plate 57, and the slide plate 55 is attached to the guide rail 59.
9 through a sliding body 60, and is slidable in the width direction of the truck. The guide rail 59 and the sliding body 60
This constitutes a wide LM guide. Note that a plurality of load balls are arranged between the guide rail 59 and the sliding body 60 as necessary. A vertical shaft 56 erected from the center of the upper surface of the bracket 53 passes through a bearing 61 disposed on the slide plate 55, and holds the bearing 61 between it and a retaining washer 62 attached to the upper end. Note that the bearing 61 is fixed to the slide plate 55 side by a bearing presser 63.

As a result, the idle wheels 44 can freely rotate around the vertical axis 64 with respect to the slide plate 55. At the lower end of the bracket 53, there are a plurality of idle rollers 65 facing the guide roller guide surfaces 10A and 10B of the rail 1.
A, 65[3 is installed. A current collector corresponding to the power supply device 40 is provided on the main body 42 side.

In the above embodiment, in the joint part of the rail 1, the guide member 18.20 is located in the through passage 4.5, and the bolt fixing device 19.21 is located in the side part 11, 6A, 7B. , guide roller guide surface 10A.

It does not protrude from the outer surface of the rail 1 with reference plane 108 or the like. Also, when the rail 1 expands or contracts in the spliced state, one rail 1 is guided by the lower guide member 20 fixed to the other rail 1, and the other rail 1 is guided by the upper part fixed to one rail 1. Guide material 1
8, and therefore expansion and contraction can be easily absorbed. In this J: Una guide,
Since the upper guide member 18 is fixed to one side and uses one side as a guide surface, and the lower guide member 20 is fixed to the other side and uses the other side as a guide surface, that is, the guide surfaces of both guide members 18 and 20 are Since the upper and lower sides face in opposite directions, connection can be performed accurately without causing lateral displacement or twisting. Also, for twisting, tap plate 16
They will also be working together. In a plan view, the gap 22 between the end faces 1a of the joint portion is formed to be inclined, so that the wheels 43 and 44 can smoothly transfer between the rails without falling into the gap 22. Guide rollers 52A, 52B, 65A, 65B are gap 2
There is no need to face 2 at the same time.

Next, the traveling work in the above embodiment will be explained.

The self-propelled trolley 41, which is placed on the surface 2 of the wheel holder of the rail 1 via each wheel 43, 44, rotates the drive wheel 43 forcibly by the operation of the drive device 50, so that the wheel receiver of the rail 1 is placed on the guide roller guide surfaces 10A, 10B. Opposed guide rollers 52A,
523. Travels on the fixed route 45 while being guided by 65A and 65B. At that time, since the two driving wheels 43 are in contact with the wheel holder surface 2, the wheel pressure of the two wheels acts,
By utilizing this high wheel pressure, acceleration and deceleration can be easily and stably performed by shortening the acceleration distance and deceleration distance. When the self-propelled truck 41 enters the curved path section 70 as shown in FIG. The rolling wheels 44 rotate individually around the vertical axis 64 via the bracket 53 and the vertical shaft 56. That is, all the wheels 43, 44 turn independently to follow the curve of the rail 1. Furthermore, in the curve route section 70, the rail 1
By applying an outward lateral pushing force to the bracket 51 through the guide rollers 65A and 653 guided by the guide rails 59 and by supporting and guiding the sliding body 60 by the guide rails 59, the units of the free-wheeling wheels 44 are moved outward. will be automatically moved to. As a result, the distance between the left and right wheels in the straight path section 71 is longer than the distance between the left and right wheels in the curved path section 70, that is, ρ decreases to L, and the rail width of the curved path section 70 is changed to the rail width of the straight path section 71. Even though it is the same, it is possible to drive smoothly and without strain. In addition, the curve route section 7
When traveling at 0, both drive wheels 43 as shown by H in FIG.
When both are within the curved route section 70, these driving wheels 43 are on the same inner rail 1 (on the same route)
, there is no speed difference between the open drive wheels 43. Furthermore, as shown by ■ in FIG.
Although there is a speed difference of only 3% or less between the two, there is no need to increase the speed 11jlJ IIJ to this extent.

In order to form the curved path portion 70 as described above, the rail 1 itself must be bent and formed, but since the rail 1 has a symmetrical shape and is easy to bend, it can be easily and accurately bent with a bender. Can be done.

When disposing the rail 1 on the machine frame 15, since it is symmetrical as described above, there is no need to select whether it is for the left side or the right side.

Side parts formed on both sides of rail 1! i! Groove 6A.

Various parts can be attached and arranged using 6B, 7A, 7B, 8A, 88.9A, and 9B. At this time, since each dovetail groove is formed so that the upper part has a large recess, a plate nut or the like can be inserted from anywhere, for example, as shown by the imaginary line in FIG.

The connecting member 25 can be easily arranged between the rails 1 by using side dovetail grooves, and the signal line 33 and the power line 34 are provided in the space formed by the connecting member 25 and the cover plate 30. It is possible to perform wiring such as, as well as the installation of various types of trolleys. The wiring and arrangement may be performed using the duct case 32, and in this case, the lid of the duct case 32 is attached to the cover plate 30.
will also serve as

Furthermore, by disposing the power supply device 40 within the connecting member 25,
This power supply device 40 is safe because it cannot be easily touched from the outside, and the current collector 66 is connected to the power supply device 4o.
By acting from the lateral direction, the self-propelled cart 41 can be easily taken out from the fixed path 45 by simply lifting it upward.

In the above embodiment, the group of idle wheels 44 is movable in the left-right direction, but this may be of a fixed type, that is, a type in which the vertical shaft 56 is attached to the main body 42 side.

Furthermore, in the above embodiment, the through passages 4 and 5 are shown in two stages, upper and lower, but they may be three or more stages, and the number of guide materials etc. is increased accordingly. Furthermore, a self-propelled trolley 41 as a moving object
is shown, but this may also be a trolley-type carrier or the like.

Effects of the Invention According to the present invention having the above configuration, in the joint portion, the guide material and the fastening device can be prevented from protruding from the outer surface of the rail, thereby preventing the moving object from traveling on a fixed path. It can be carried out without any problems and is aesthetically pleasing.

Also, when the rails expand or contract due to temperature differences during jointing, one rail will be guided by the guide material fixed to the other rail, and the other rail will be guided by the guide material fixed to one rail. The expansion and contraction can be easily absorbed. During such guiding, since the guide surfaces of each guide material are vertically opposite side surfaces, connection can be performed accurately without causing lateral displacement or twisting. In plan view, the gap between the end faces of the joint part can be formed at an angle, so the wheel can smoothly transfer between the rails without falling into the gap, and the guide roller can move into the gap. They do not face each other at the same time, and therefore the moving body can run smoothly without generating vibration or noise.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional front view;
Figure 2 is a front view when in use, Figure 3 is a plan view of the same, Figure 4 is a partially cutaway front view of the driven wheel section, Figure 5 is a side view of the same, and Figure 6 is a schematic diagram showing the running state. FIG. DESCRIPTION OF SYMBOLS 1...Rail, 1a...End surface, 2...Wheel holder is a surface, 3...Lower dovetail groove, 4...Upper through passage, 5...Lower through passage, 6A, 6B, 7A , 78.8A, 88.9A
. 9B... Side dovetail groove, 10A, 103... Guide roller guide surface, 11... Center line, 15... Machine frame, 18
... Upper guide material, 19.21 ... Bolt fixing tool (
Tighten with a fixture), 20...lower guide material, 22...
Gap, 25... Connection member, 37... Feeder line, 3
9... Detected object, 40... Power supply device, 41... Self-propelled trolley (mobile object), 43... Drive wheel, 44... Idle wheel, 50... Drive device, 52A , 52B...
Guide roller, 65A. 65B... Guide roller, 66... Current collector. Agent Yoshihiro Morimoto

Claims (1)

[Claims] 1. The rail that supports and guides the moving body is formed into a rectangular cross-section, and through-paths are formed at multiple locations in the vertical direction within the rail, each extending over the entire length, and dovetail grooves that are open to the sides are formed on both sides. A joint portion is formed between the ends of the rail in an inclined cut shape in plan view, and a guide material is inserted between the opposing through passages in this joint portion, and a part of these guide materials is , the guide material was fixed to one rail by a tightening fixture located in the dovetail groove on one side, and the remaining guide material was fixed to the other rail by a tightening fixture located in the dovetail groove on the other side. A rail joint structure for moving objects featuring: