JPH0435296Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a guide rail with an I-shaped cross section (horizontal H-shape) for guiding the trolley of a trolley conveyor, and is used in the take-up device part of the trolley conveyor. This invention relates to an extendable guide rail.

(Prior Art) As this type of extendable guide rail, for example, the guide rail described in Japanese Utility Model Publication No. 58-20578 is known. This conventional extendable guide rail has two trolley guide rails that are telescopically connected to each other, and the left and right sides overlap each other so as to be able to slide in the longitudinal direction on the trolley wheel support parts that extend to the left and right of one of the guide rails. A pair of movable rail members are connected to the other guide rail.

In such a guide rail, a step is created between the surface of the movable rail material and the surface of the trolley wheel support portion of the guide rail at both ends of the movable rail material.

(Problem to be solved by the invention) Therefore, when the trolley moves from one of the two guide rails to the other, the trolley wheel must pass through the stepped portion, which results in vibration and noise. Not only can they not be used to transport special objects that are affected by such vibrations, but the noise also deteriorates the surrounding working environment.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the present invention has two trolley guide rails that are telescopically connected to each other, and one of the trolley guide rails is stretched on the left and right sides. The trolley wheel support part to be taken out is made narrow over the required length from the tip of the guide rail, and from the other guide rail, the trolley wheel support surfaces are long and flush with each other on the left and right sides of the narrow trolley wheel support part. A pair of left and right movable rail members adjacent to each other are arranged so as to be slidable in a horizontal direction, and further, between both guide rails, left and right trolley wheels are placed in a neutral position spanning the movable rail member and the narrow trolley wheel support portion. A telescopic guide rail for guiding a trolley is proposed, in which a pair of left and right trolley lateral movement regulating rail materials are arranged on both left and right sides of the central vertical wall of the guide rail in a state that allows both guide rails to expand and contract. It is.

(Operation of the invention) According to the above configuration, both guide rails can extend and contract in the length direction. At this time, the narrow trolley wheel support part of one guide rail and the pair of left and right movable rail members connected from the other guide rail slide relative to each other in the length direction, and the overlapping length in the left and right lateral directions between them is Change.

Therefore, the left and right trolley wheels of the trolley that transfers from one guide rail to the other guide rail are neutrally straddled between the movable rail material and the narrow trolley wheel support section by the pair of left and right trolley lateral movement regulating rail materials. The left and right trolley wheels are in a state in which only the inner half is supported by the trolley wheel support surface of the narrow trolley wheel support part, and by the movable rail material and the adjacent narrow trolley wheel support part. The movable rail material is transferred from one guide rail to the other through a state in which it is straddled and supported, and a state in which only approximately the outer half of the movable rail material is supported by the trolley wheel support surface.
When the transfer direction is reversed, the transit order is reversed. During this time, all the trolley wheel support surfaces are flush and continuous, so the trolley wheel does not go over the upper and lower steps.

(Effect of the invention) Therefore, according to the above-mentioned guide rail of the present invention, although it is a guide rail for guiding a trolley that can be expanded and contracted in the length direction, the trolley does not transfer from one guide rail to the other guide rail. There is no vibration or noise like in the conventional case. As a result, it can be used without any problem in a transport line for special objects to be transported, where even the slightest vibration must be avoided, and the surrounding working environment is also improved.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

Reference numerals 1 and 2 are guide rails for guiding trolleys with an I-shaped cross section (horizontal H-shape) that are connected to each other so as to be expandable and contractible in the length direction. The narrow trolley wheel support portion 3a is formed by cutting both sides over a required length into a downwardly tapered shape. Reference numeral 4 denotes a pair of left and right movable rail members connected from the other guide rail 2, which are integrated with each other by a bottom plate portion 5, and are movable only by sliding in the longitudinal direction on both left and right sides of the narrow trolley wheel support portion 3a. Fit externally. At this time, the trolley wheel support surface 4a of the movable rail material 4 and the trolley wheel support surface 3b of the narrow trolley wheel support portion 3a are flush and continuous.

Furthermore, a narrow width section 6a similar to the narrow width trolley wheel support section 3a is formed at the end of the trolley wheel support section 6 of the guide rail 2, and one end of the movable rail material 4 is formed on both left and right sides of this narrow width section 6a. Although it is fitted externally and fixed by welding or bolts/nuts, it is also possible to connect one end of the movable rail material 4 to the end face of the trolley wheel support part 6 by welding or the like. In any case, the trolley wheel support section 6 on the guide rail 2
The trolley wheel support surface 6b (including the narrow portion 6a) and the trolley wheel support surface 4a of the movable rail material 4 are flush and continuous.

Reference numerals 7 and 8 refer to a pair of left and right trolley lateral motion regulating rail members, which are provided on both the left and right sides of the central vertical wall portion 9 of one guide rail 1, with narrow trolley wheel support portions 3.
The first rail material 7 fixed over the entire length of a
a, 8a, and a second rail member whose one end is fixed to both left and right sides of the central vertical wall portion 10 of the other guide rail 2, and which is vertically adjacent to the first rail member 7a, 8a and can slide in the length direction. The upper and lower adjacent sides of the first and second rail materials 7a, 7b and 8a, 8b that are vertically adjacent to each other are:
The first rail material 7 is attached to the side of the second rail material 7b, 8b.
It is formed diagonally so that the sides of a and 8a overlap.

According to the above configuration, both guide rails 1 and 2
can extend and contract in the length direction as shown in FIG. 1 (extended state) and FIG. 3 (contracted state). At this time, the movable rail material 4 on the guide rail 2 side and the narrow trolley wheel support portion 3a on the guide rail 1 side are
b will slide in the length direction while remaining flush and continuous. In addition, in the pair of left and right trolley lateral motion regulating rail materials 7 and 8, the first rail material 7
a, 8a and the second rail members 7b, 8b will slide in the length direction.

When in use, the fixed guide rail is connected to one of the guide rails 1 and 2, and the movable guide rail of the take-up device is connected to the other guide rail, and both guide rails 1 and 2 are connected to each other.
The telescopic movement between the two allows movement of the movable guide rail of the take-up device. However, as shown in FIG. 9, the trolley 11 of the trolley conveyor is
A pair of left and right trolley wheels 13 are attached to the drive chain 12 at appropriate intervals and roll on the surfaces of the trolley wheel supports 3 and 6 of the guide rails 1 and 2.
When running between the inner end P1 of the narrow trolley wheel support portion 3a of the guide rail 1 and the tip P2 of the guide rail 2, the trolley lateral motion regulating rail members 7 and 8 are located inside both trolley wheels 13. , the trolley 11 is restricted from lateral movement so that the trolley wheel 13 rolls at a neutral position spanning the narrow trolley wheel support portion 3a and the movable rail material 4.

Therefore, the trolley 11 is, for example, the guide rail 1
When traveling from the inner end P1 of the narrow trolley wheel support part 3a to the tip P2 of the guide rail 2, the trolley wheel 13 is in a state where approximately the inner half is supported by the trolley wheel support surface 3b of the narrow trolley wheel support part 3a. , a state in which the narrow trolley wheel support portion 3a is supported across the trolley wheel support surface 3b and the trolley wheel support surface 4a of the movable rail material 4, and a substantially outer half of the movable rail material 4 is on the trolley wheel support surface 4a. The trolley wheel support section 3 of the guide rail 1 is transferred to the trolley wheel support section 6 of the guide rail 2 through the supported state in sequence.
During this time, there is no step that causes vertical vibration to the trolley wheel 13.

Note that the trolley lateral movement regulating rail members 7 and 8 are shown as those that come into direct contact with the end face of the trolley wheel 13 to regulate the lateral movement of the trolley 11; The lateral movement of the trolley may be restricted by coming into contact with a vertical shaft roller for steady rest that is pivotally supported by another trolley attached to the trolley. In addition, the trolley lateral motion regulating rail materials 7 and 8 are used for the guide rails 1,
Even if 2 contracts, the narrow trolley wheel support part 3a
The first rail materials 7b, 8a attached to the guide rail 1 and the second rail materials 7b, 8b attached to the guide rail 2 so as not to extend from the area between the inner end P1 and the tip P2 of the guide rail 2.
Although the structure is constructed so that the rail material is divided into two parts and can be contracted, if there is no such restriction, one end of each long rail material may be fixed to either one of the guide rails 1 and 2.

[Brief explanation of the drawing]

Figure 1 is a side view in an extended state, Figure 2 is a plan view of the same, Figure 3 is a side view in a contracted state, and Figure 4 is a side view of the
5 is a sectional view taken along line BB of FIG. 1, FIG. 6 is a sectional view taken along line C-C of FIG.
The drawings are a sectional view taken along the line D-D in FIG. 1, FIG. 8 is a sectional view taken along the line E-E in FIG. 1, and FIG. 9 is a longitudinal sectional front view showing the trolley and the guide rail. DESCRIPTION OF SYMBOLS 1, 2...Guide rail, 3, 6...Trolley wheel support part, 3a...Narrow width trolley wheel support part, 3b, 4a, 6b...Trolley wheel support surface, 4...Pair of left and right movable rail members, 5 ……
Bottom plate part, 6a... Narrow width part, 7, 8... Trolley lateral movement regulating rail material, 7a, 8a... First rail material,
7b, 8b...Second rail material, 9, 10...Central vertical wall portion, 11...Trolley, 12...Drive chain, 13...Trolley wheel.

Claims (1)

[Scope of utility model registration request] Of the two trolley guide rails that are telescopically connected to each other, the trolley wheel support parts that protrude from the left and right sides of one of the guide rails are made narrow over the required length from the tip of the guide rail, and from the other guide rail. is a pair of left and right movable rail members that are adjacent to each other so as to be slidable in the longitudinal direction with the trolley wheel support surfaces flush with each other on both the left and right sides of the narrow trolley wheel support part, and further, a is a pair of left and right trolley lateral motion regulating rail materials that regulate the left and right trolley wheels to a neutral position spanning the movable rail material and the narrow trolley wheel support portion, and the guide rails are arranged in a state that allows expansion and contraction movement of both guide rails. A telescopic guide rail for guiding a trolley, which is arranged on both the left and right sides of the central vertical wall.