JP2507919Y2 - Sleeper changer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sleeper changer used for sleeper replacement work in railway track maintenance work.

[Conventional technology]

Railway track maintenance work includes the work of exchanging crushed stones for the roadbed with new crushed stones, work of replacing rails, work of replacing sleepers that support the rails, and these track maintenance work was performed manually. In recent years, it has been attempted to mechanize track maintenance work with work machines of work vehicles running on rails.

[Problems to be solved by the device]

In the mechanization of such track maintenance work, in order to mechanize the sleeper exchange work, a device for grasping the sleepers is attached as a working machine of the work vehicle, the sleepers are grasped by the grasping device and lifted off the roadbed, and a new sleeper is grasped. It may be possible to install it on the roadbed, but since the sleepers are mostly buried in the crushed stones that make up the roadbed, the gripping device for the luggage clamp of the forklift truck cannot grip the sleepers, and the sleepers are securely scraped. Development of a sleeper changer that can be gripped is desired.

Therefore, an object of the present invention is to provide a sleeper exchanging machine capable of scraping out the sleepers almost buried in the trackbed and securely grasping them so that the sleepers can be taken out or put in by rotating between the rails.

[Means and Actions for Solving the Problems]

A fixed gripping piece 31 is provided on the tip of the main body 20 rotatably provided on the mounting base 12 to form a fixed arm 33, and
-The base ends of the second links 34 and 35 are slidably pivoted toward the fixed gripping piece 31, and the movable arm 43 is pivotally attached to the tip end of the fixed links to form a two-parallel four-bar linkage mechanism. 1 link 34
A sleeper changer in which a cylinder 44 is connected between the main body 20 and the main body 20.

As a result, the movable arm 43 is fixed to the fixed gripping piece of the fixed arm 33 by vertically swinging the first link 34 by the cylinder 44.
Since it moves parallel to 31, the sleeper can be grasped and released, and if the movable arm 43 is separated from the fixed gripping piece 31 of the fixed arm 43, the fixed gripping piece 31 scrapes off the crushed stone near the sleeper. Since the sleepers can be dug out, even sleepers almost buried in crushed stone can be reliably grasped, and since the movable arm 43 is swung with respect to the fixed arm 33, it is possible to reduce the weight and the mounting portion 12 On the other hand, since the main body 20 is rotatably attached, the sleepers can be attached and removed while being held between the rails, so that it can be attached to a small work vehicle and the sleepers can be exchanged even in a narrow place.

〔Example〕

As shown in FIG. 5, sleepers 3 are attached to a roadbed 2 made of crushed stone 1.
Are arranged at predetermined intervals, and the rails 4 are spread over the sleepers 3.
, A boom 6 and an arm 7 are sequentially provided on a work vehicle 5 traveling along the rail 4 so as to be vertically swingable, and a sleeper changer 8 according to the present invention is provided at a tip end of the arm 7.
Is mounted on the working machine cylinder 9 so as to be vertically swingable.

Next, details of the sleeper exchanger 8 will be described with reference to FIGS. 1 to 4.

A pair of vertical plate-shaped brackets 11, 11 are fixed to the upper surface of the board 10 to form a mounting base 12, and a disk 13 is fixedly mounted on the lower surface of the board 10 with bolts 14, and a bearing 15 is interposed on the disk 13. The ring gear 16 is rotatably fitted, and the pinion 17 meshed with the ring gear 16 is provided on the output shaft 18a of the motor 18 provided on the substrate 10 to form the turning mechanism 19. The body 20 is bolted to the.

The main body 20 includes one side plate 22 and another side plate fixed to the lower surface of the upper plate 21.
It has a hollow shape in which one end connecting plate 24 and the other end connecting plate 25 are fixed to each other over 23, and its upper plate 21 is fixed to the lower surface of the ring gear 16 with a bolt 26, and is provided on the upper plate 21 via a bracket 27. The swivel joint 28 is the center hole 13 of the disc 13.
The recess 29a of the support piece 29 provided on the bracket 11 so as to project upward from a is engaged with the pin 30 via the pin 30 so that the pressure oil can be supplied from the mounting base 12 side to the main body 20 side.

A fixed gripping piece 31 is integrally provided at the tip of the main body 20, and a pad 32 is provided on one side surface of the fixed gripping piece 31 to form a fixed arm 33 with the main body 20 and the fixed gripping piece 31. ing.

Between the one side plate 22 and the other side plate 23 of the main body 20, the base ends of the first link 34 and the second link 35 are supported by the first and second pins 36 and 37 so as to be vertically swingable, and 1st and 2nd links 34,35
A movable gripping piece 38 is pivotally attached to the distal end of each of the third and fourth pins 39 and 40 to form a parallel four-bar link mechanism 41.
A pad 42 is provided on the other side surface of 38 to form a movable arm 43, and a cylinder 44 is formed with pins 45 and 46 between the base end of the first link 34 and one side plate 22 of the main body 20 and the other side plate 23. It is connected.

The bracket 11 of the mounting base 12 is pivotally connected to the tip of the arm 7 and the work machine cylinder 9, and the sleeper exchanger 8 swings up and down by expanding and contracting the work machine cylinder 9.

Further, by driving the motor 18, the main body 20 turns and the fixed arm 33 and the movable arm 43 turn.

Further, by expanding and contracting the cylinder 44, the movable arm 43 moves in parallel as shown by the phantom line in FIG. 1 and holds the sleeper 3 with the fixed arm 33.

If the movable arm 43 is separated from the fixed arm 33, the crushed stone 2 near the sleeper 3 can be scraped out by the tip of the fixed gripping piece 31.

[Effect of device]

By vertically swinging the first link 34 with the cylinder 44, the movable arm 43 moves in parallel toward the fixed gripping piece 31 of the fixed arm 33, so that the sleeper can be gripped and released.
If the movable arm 43 is separated from the fixed gripping piece 31 of the fixed arm 43, the fixed gripping piece 31 can scrape off the crushed stones near the sleepers and dig out the sleepers, so that even the sleepers almost buried in the crushed stones can be reliably gripped. .

Further, since the movable arm 43 is rocked with respect to the fixed arm 33, the weight can be reduced, and since the main body 20 is rotatably attached to the mounting portion 12, the sleeper is held between the rails. It can be mounted and removed by rotating it as it is, so it can be mounted on a small work machine and the sleepers can be replaced even in a narrow space.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a longitudinal sectional view of a sleeper exchanger, Fig. 2 is a plan view, Fig. 3 and Fig. 4 are II of Fig. 1.
FIG. 5 is a schematic front view of the entire work vehicle, taken along the line I-III and the line IV-IV. 12 is a mounting base, 20 is a main body, 31 is a fixed gripping piece, 33 is a fixed arm, 34 and 35 are first and second links, 43 is a movable arm, 44
Is a cylinder.

Claims (1)

(57) [Scope of utility model registration request] 1. A main body 20 provided so as to be rotatable with respect to a mounting base 12.
A fixed gripping piece 31 is provided at the tip of the fixed arm 33, and the base ends of the first and second links 34, 35 are pivotally attached to the main body 20 so as to swing toward the fixed gripping piece 31. A sleeper exchanger in which a movable arm 43 is pivotally attached to a tip end portion thereof to form a parallel four-bar linkage mechanism, and a cylinder 44 is connected across the first link 34 and the main body 20.