JP2001106462A - Screw rod for variable pallet speed in accelerating/ decelerating moving walk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the fabrication costs of a screw rod. SOLUTION: A moving walk 1 of accelerating and decelerating type comprises a get-on and a get-off part moving at a low speed, an intermediate part moving at a high speed, and an accelerating and a decelerating part which are located between them and each equipped with a screw rod 16 for changing the speed of pallets, and a plurality of shafts 16A, 16B, 16C are coupled together by joints, wherein the joint 14 used to the part with shorter screw pitch comprises a coupling pin 10 fitted in round holes 16b and 16c formed at the axes of the shafts 16A and 16B at their ends and a stationary pin 11 inserted into the pin 10 from the shaft peripheries, while the joint 14a used to the part with longer screw pitch is composed of a coupling pin 10A fitted in round holes 16d and 16e formed at the axes of the shafts 16B and 16C at their ends and a stationary plate 12a inserted fast in grooves 16h and 16i provided at the peripheries of the shafts 16B and 16C extending in their axial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet-variable speed screw rod for a pallet of an accelerating / decelerating type moving sidewalk, which is provided in a public facility such as an airport or a station yard, and moves by carrying personnel. The present invention relates to a pallet variable-speed screw rod for an accelerating / decelerating moving sidewalk provided in parallel.

[0002]

2. Description of the Related Art In a boarding / alighting section, a vehicle travels at a speed approximately equal to that of a conventional moving sidewalk, and in a middle region, it travels at a speed about 3 to 4 times that of a conventional moving sidewalk. Speedy moving walkways are attracting attention.

FIG. 7 shows a prior application filed by the present applicant (Japanese Unexamined Patent Application Publication No.
FIG. 1A is an overall schematic view of a horizontal circulation type moving sidewalk, in which FIG. 1A is a plan view and FIG. 1B is a side view. 8 is a partially enlarged plan view of (A), FIG. 9 is a side view of the pallet, FIG. 10 is a view taken along the line AA in FIG. 8, and FIG.
FIG. 4 is an explanatory view of a pallet variable speed device.

As shown in FIGS. 7 to 11, a horizontally circulating moving sidewalk described in Japanese Patent Application Laid-Open No. 11-180664 has two straight portions 1a and 1b and two semicircular arc-shaped portions 1 as shown in FIGS.
c, 1d and a plurality of pallets 3 are connected to each other so as to partially overlap each other on a rail 7 formed in an annular shape by combining them endlessly. It is a sidewalk 1 that moves. The linear portion 1a,
1b is a moving sidewalk of the outward route and the return route. The linear portions 1a and 1b near the semicircular arc portions 1c and 1d have a short pitch on the entrance side or the exit side and a long pitch on the middle side. A total of four sets of screw rods 16 having a spiral screw groove 16a provided along are provided. A roller 18 projecting from a projection 17 on the lower surface of the pallet 3 is engaged with the screw groove 16a of the screw rod 16, and the pallet 3 is moved by rotating the screw rod 16. In the semicircular arc-shaped portions 1c and 1d, the rear pallet 3
The concave portion 3a on the front surface and the protrusion 3c on the lower surface of the front pallet 3 are brought into contact with each other and pressed against each other to move.
In the middle between a and 1b (that is, the portion where the screw rod 16 is not provided), the pallets 3 are moved by pulling each other by the string-like members 8 connected to each other. Reference numeral 2 denotes a boarding / alighting section provided on the semicircular arc-shaped sections 1c and 1d, 2a denotes a boarding section, and 2b denotes a boarding section. Reference numeral 4 denotes a base frame on which the sidewalk 1 that moves horizontally is mounted. Reference numeral 5 denotes a beam provided on the lower surface of the pallet 3 in the width direction. Reference numeral 6 denotes a traveling roller rotatably provided on the lower surface of the beam 5, and rolls on the upper surface of the rail 7. Reference numeral 9 denotes a support for supporting the rail 7 and the screw rod 16. Reference numeral 15 denotes a pallet variable speed device. 19 is a screw rod driving device (motor).

[0005]

In such a moving sidewalk, the length of the screw rod needs to be 10 meters or more in order to suppress acceleration / deceleration within a safe range. If the length of the screw rod is too long, existing machine tools cannot cope with it, and it is difficult to form a thread groove on the outer peripheral surface of the screw rod. Making a special machine tool for long screw rod processing costs a lot of money.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and the manufacturing cost is increased by dividing a screw rod into a thread groove and connecting the screw rods via a joint. It is an object of the present invention to provide a pallet variable speed screw rod for an accelerating / decelerating moving sidewalk, which can reduce the load.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided an acceleration / deceleration section of a moving sidewalk having an acceleration / deceleration type having a low-speed entry / exit section, an intermediate high-speed section, and an acceleration / deceleration section between the entry / exit section and the high-speed section. A pallet variable speed screw rod for an accelerating / decelerating moving sidewalk to be provided, which is formed by connecting a plurality of shafts via a joint,
The joint used for the portion with a short screw pitch consists of a connecting pin fitted into a round hole provided on the shaft core at the end of each shaft, and a fixing pin inserted into the connecting pin from the outer periphery of the shaft, and used for a portion with a long screw pitch. The joint is an accelerating / decelerating moving sidewalk composed of a connecting pin fitted in a round hole provided in the shaft core at the end of each shaft, and a fixed plate inserted and fixed in a groove provided in the axial direction on the outer periphery of each shaft. Pallet variable speed screw rod is provided.

Next, the operation of the present invention will be described. The pallet variable speed screw rod is divided into a plurality of dimensions that can be manufactured with existing machine tools. A thread groove having a continuously changing pitch is machined on the outer peripheral surface of the divided screw rod, and a round hole is provided in a shaft core at a joint end of the screw rod. After machining the screw groove and the round hole, a connecting pin is fitted into the round hole provided in the shaft core and connected to form a series of screw rods. After forming a series of screw rods, the joint on the thread groove side with a short thread pitch,
In the vicinity of the end of the joint, fix it with a fixed pin inserted into the connecting pin from the outer periphery of the shaft at a position off the thread groove, and the joint on the thread groove side with a long thread pitch is attached to the outer periphery of each shaft at the end of the joint. Then, it is fixed with a fixing plate inserted into a groove provided in the axial direction at a position where the screw groove is removed. In this way, the screw rod is divided into dimensions within the range that can be manufactured with existing machine tools and thread grooves are machined, and then each screw rod is connected. Can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a pallet variable speed screw rod of an accelerating / decelerating moving sidewalk. FIG. 2 is a view in which the pallet variable speed screw rod of the moving sidewalk of the acceleration / deceleration type shown in FIG. 1 is divided into three parts, (A) is an enlarged view of a low-speed axis, (B) is an enlarged view of a medium-speed axis,
(C) is an enlarged view of the high-speed axis. FIG. 3 is an enlarged plan view of a joint between a low-speed shaft and a medium-speed shaft having a short screw pitch. FIG.
FIG. 4 is a view on arrow AA in FIG. 3. 5A and 5B are views of a joint between a medium speed shaft and a high speed shaft having a long screw pitch, FIG. 5A is an enlarged side sectional view of the joint, and FIG. 5B is a view taken along the line AA of FIG. FIG. 6 is a plan view of the connecting pin. In these drawings, members common to those described in FIGS. 7 to 11 are denoted by the same reference numerals, and redundant description will be omitted.

A moving sidewalk 1 has a large number of pallets 3 partially connected to each other on an annular rail 7 formed by combining two straight portions 1a and 1b and two semicircular arc portions in an endless manner. The pallet 3 is placed on the pallet 3 while being connected so as to overlap with each other. Reference numeral 15 denotes a pallet variable speed device. Reference numeral 16 denotes a pallet variable speed screw rod.

A pallet variable speed screw rod (hereinafter referred to as "screw rod") 16 is provided on the straight portions 1a and 1b near the two semicircular arc-shaped portions 1c and 1d, respectively. Has a spiral thread groove 16a with a short thread pitch and a long thread pitch on the middle side. A roller 18 protruding from a projection 17 on the lower surface of the pallet 3 is engaged with a screw groove 16 a of the screw rod 16, and the pallet 3 is moved by rotating the screw rod 16.

The screw rod 16 has a thread groove 16a whose pitch changes continuously, but has a low-speed shaft 16A having a thread groove 16a having a short thread pitch and a thread groove 16a having a relatively long thread pitch. High-speed shaft 16C, medium-speed shaft 1 connected between low-speed shaft 16A and high-speed shaft 16C
6B. Reference numeral 14 denotes a joint connecting the short pitch thread groove 16a, that is, the low speed shaft 16A and the medium speed shaft 16B.
6a, that is, a joint for connecting the medium speed shaft 16B and the high speed shaft 16C.

Reference numerals 16b and 16c denote round holes provided concentrically on the end surfaces of the low-speed shaft 16A and the medium-speed shaft 16B on both sides of the joint 14 (FIGS. 2, 3 and 4). 16d and 16e are joints 14
A round hole is provided concentrically on the end faces of the medium speed shaft 16B and the high speed shaft 16C on both sides of FIG. 16f is fitting 14
16g is a groove provided on the shaft periphery near the end of the low-speed shaft 16A on the left side, and 16g is a groove provided on the shaft periphery near the end of the middle speed shaft 16B on the right side of the joint 14. The grooves 16f and 16g are 180 °
It is shifted and provided at a position outside the screw groove 16a (FIGS. 2, 3, and 4). 16h and 16i are joints 14a
The groove is provided in the axial direction at the end of the medium speed shaft 16B and the high speed shaft 16C (FIGS. 2 and 5).

As shown in FIGS. 3 and 4, reference numeral 10 denotes a joint 1
4 are connection pins fitted into the round holes 16b and 16c. 1
Reference numeral 0a denotes a fixing pin hole provided in the connecting pin 10, which is provided so as to be orthogonal to the axis of the low-speed shaft 16A and the medium-speed shaft 16B. 10A is a round hole 16d, 16e of the joint 14a.
It is a connecting pin fitted in. The outer diameter of the intermediate portion and both ends of the connecting pins 10, 10A is formed slightly larger than the outer diameter of the main body, and this portion is fitted with the round holes 16b, 16c.

Numeral 11 denotes a groove 16 provided around the shaft of the joint 14.
f and 16g are fixing pins inserted into fixing pin holes 16j provided in the low-speed shaft 16A and the medium-speed shaft 16B and fixed pin holes 10a provided in the connecting pin 10.

Reference numeral 12 denotes a holding plate for the fixing pin 11 inserted into the grooves 16f and 16g of the joint 14, and both ends are fixed by bolts 13.

As shown in FIG. 5, 12a is a joint 14a.
The fixed plate inserted in the grooves 16h and 16i of the medium speed shaft 16
B and the high-speed shaft 16C are prevented from relatively rotating, and are not separated from each other in the axial direction.
It is fixed by 3a.

Next, the operation of the present embodiment will be described.
The pallet variable speed screw rod 16 is divided into a plurality of dimensions in a range that can be manufactured by an existing machine tool. A thread groove 16a having a continuously changing pitch is machined on the outer peripheral surface of the divided screw rod 16, and a round hole 16b is formed in the axis of the end face of the joint 14, 14a of the screw rod 16.
16c, 16h and 16i are provided. After machining the screw groove 16a and the round holes 16b, 16c, 16h, 16i, the connecting pins 10, 10A are fitted into the round holes 16b, 16c, 16h, 16i provided in the shaft core, and connected to form a series of screws. The rod 16 is formed. A series of screw rods 16
Is formed, the joint 14 on the thread groove side having a short thread pitch is formed.
Is fixed by a fixing pin 11 inserted into the connecting pin 10 from the outer periphery of the shaft at a position near the end of the joint 14 and outside the thread groove 16a, and the joint 14 on the thread groove side having a long thread pitch is provided.
a is a groove 16 provided on the outer periphery of each of the shafts 16B and 16C at the end of the joint 14a at a position off the screw groove 16a in the axial direction.
h, fixed by the fixing plate 12a inserted in 16i. As described above, after the screw rod 16 is divided into dimensions within a range that can be manufactured by an existing machine tool and the screw groove 16a is machined, the screw rods 16A, 16B, and 16C are connected to each other. No machine is required, and production costs can be reduced.

The present invention is not limited to the above embodiment, and various changes can be made without departing from the gist of the present invention. For example, a square hole may be used instead of the round hole provided in the shaft core, and the connection pin may be square.

[0020]

As described above, according to the present invention, the screw rod is divided and thread grooves are machined, and then each screw rod is connected, so that the manufacturing cost of the screw rod can be reduced. It has excellent effects such as being able to.

[Brief description of the drawings]

FIG. 1 is a side view of a pallet variable speed screw rod of an accelerating / decelerating moving sidewalk according to the present invention.

FIGS. 2A and 2B are views in which the pallet variable speed screw rod of the moving sidewalk of FIG. 1 is divided into three parts, wherein FIG. 2A is an enlarged view of a low-speed shaft, and FIG. (C) is an enlarged view of the high-speed axis.

FIG. 3 is an enlarged plan view of a joint between a low-speed shaft and a medium-speed shaft having a short screw pitch.

FIG. 4 is a view taken in the direction of arrows AA in FIG. 3;

FIG. 5 is a diagram of a joint between a medium speed shaft and a high speed shaft having a long screw pitch, (A) is an enlarged side sectional view of the joint, and (B)
FIG. 4 is a view taken along the line AA in FIG.

FIG. 6 is a plan view of a connecting pin.

FIGS. 7A and 7B are general schematic views of a horizontal circulation type moving sidewalk described in Japanese Patent Application Laid-Open No. 11-180664, wherein FIG. 7A is a plan view and FIG.

FIG. 8 is a partial plan view of FIG. 7;

FIG. 9 is a side view of the pallet.

FIG. 10 is a view taken in the direction of arrows AA in FIG. 8;

11 (A) is a plan view, FIG. 11 (B) is a side view of FIG. 11 (A), FIG. 11 (C) shows a high speed section, and FIG. 11 (D) shows a speed reduction section. (E) is a diagram showing the getting on / off section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal circulation type moving sidewalk 1a, 1b Linear part 1c, 1d Semi-circular arc-shaped part 2 Elevating part 2a Entrance part 2b Exit part 3 Pallet 3a Concave part 3c Projection 6 Running roller 8 String member 10 Connecting pin 11 Fixing pin 12 Holding plate 12a Fixing plate 13 Bolt 14, 14a Joint 15 Pallet variable speed device 16 Screw rod 16A Low speed shaft 16B Medium speed shaft 16C High speed part 16a Screw groove 16b, 16c, 16d, 16e Round hole 16f, 16g, 16h, 16i groove 16j Pin hole 18 Roller 19 Screw rod drive (motor)

Claims (1)

[Claims] 1. A pallet of an accelerating / decelerating moving sidewalk provided in an accelerating / decelerating section of an accelerating / decelerating moving sidewalk having a low speed getting on / off section, an intermediate high speed section, and an accelerating / decelerating section between the getting on / off section and the high speed section. A speed change screw rod, formed by connecting a plurality of shafts via a joint, and a joint used for a portion having a short screw pitch is provided with a connecting pin fitted to a round hole provided in a shaft core at an end of each shaft. The joint used for the portion with a long screw pitch is a connecting pin fitted into a round hole provided in the shaft core at the end of each shaft, and a shaft attached to the outer periphery of each shaft. A screw rod for a variable speed pallet of a moving sidewalk, which comprises an acceleration / deceleration-type moving sidewalk, comprising a fixed plate inserted and fixed in a groove provided in the direction.