JPH08253148A - Connecting rod of maintenance work vehicle for railroad maintenance - Google Patents

Abstract

PURPOSE: To provide a connecting rod which can prevent a noise emitted from the connecting rod at departing-stopping time of its work locomotive and can absorb impact between both and can prevent fatigue of a connecting part in the connecting rod to connect its driving side work locomotive and a second work vehicle having no braking device to each other. CONSTITUTION: In a connecting rod main body 3, a long and narrow first member 1 is fitted to and installed on a second member 2 so as to be freely slidable in its shaft direction, and a pair of universal joints 4 are arranged in both end parts of its main body 3. A pair of brackets 5 are arranged on both ends of the main body 3, and these are respectively installed on a rolling stock so as to be freely mountable and demountable. Since an impact absorbing elastic body 6 is interposed between the first member 1 and the second member 2, both members become elastic and repulsive in both directions of the axis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting rod for connecting a maintenance work locomotive for track maintenance driven by electricity or an engine and a second work vehicle such as a ballast sweeper connected thereto.

[0002]

2. Description of the Related Art Maintenance work locomotives for track maintenance, which are driven by electricity, etc., have multiple tie tampers for crushing gravel and a computer for recording maintenance points of track maintenance and various sensors. . The ballast sweeper connected to the work locomotive is a second work vehicle that smooths the gravel around the rail. No brake is attached to the second work vehicle. for that reason,
Every time the work locomotive started and stopped, an unpleasant metallic noise was emitted between the work locomotive and the second work vehicle. Therefore, when performing track maintenance with the work vehicle at night, residents along the railway line may be disturbed. Moreover, every time the vehicle is stopped, the impact force from the second work vehicle adversely affects the computer and sensors of the work locomotive. Therefore, as a result of various experimental studies, the inventors of the present invention have devised a connecting rod which has a simple structure and solves the above problems, and its constitution is as follows.

[0003]

The connecting rod of a maintenance work vehicle for track maintenance according to the present invention is a connection rod in which an elongated first member 1 is fitted in a second member 2 so as to be slidable in the axial direction. The rod main body 3, a pair of universal joints 4 provided at both ends of the main body 3 and pivotably attached around two axes orthogonal to the axis of the main body 3, and the main body 3 A shock absorption that is interposed between the pair of brackets 5 provided at both ends and detachably attached to the vehicle, respectively, and the first member 1 and the second member 2 and elastically repels in both directions of their axes. Elastic body 6 for use.

In a preferred embodiment of the present invention, the intermediate portion 7 and the outer periphery of the tip end portion of the first member 1 are inserted into the tubular portion 8 of the second member 2, and the intermediate portion of the first member 1 is A small diameter portion 10 having a small outer diameter is provided at the tip portion or the intermediate portion of the first member 1 which comes into contact with the inner surface of the tubular portion 8 of the second member 2 directly or through a sliding bush 9. And the elastic body 6 elastically repelled in the small diameter portion 10 in the axial direction.
Is fitted and the elastic body 6 is connected to the inner surface of the second member 2. Further, the elastic members 6 made up of a large number of annular disc springs are attached to the small-diameter portion 10 of the first member 1 in mutually opposite directions, and the inner flange portion 12 is formed on the inner surface of the second member 2 at the intermediate portion in the stacking direction. It is projectingly fixed, and spring seats of the elastic body 6 formed of the annular disc spring are formed on both axial side surfaces of the inner flange portion 12.

[0005]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view of a connecting rod of a maintenance work vehicle for track maintenance according to the present invention. Further, FIG. 2 is a cutaway front view of the relevant part. In this embodiment, the main body 3 is formed in a rod shape, and a pair of universal joints 4 and a bracket 5 are arranged at both ends thereof. One bracket 5 is detachably attached to the rear end of the work locomotive on the drive side,
The other bracket 5 is detachably attached to the front end of the second work vehicle having no driving force. for that reason,
Each bracket 5 has a bolt hole 11
Each vehicle and the main connecting rod are connected by a bolt (not shown) inserted in 11. A first link 16 having a U-shaped cross section is protrudingly fixed to the bracket 5, and pin holes are formed on both sides thereof. Then, a pin hole (not shown) formed in the side surface of the convex portion at one end of the second link 17 is aligned with a pin hole of the first link 16, and the pin 15 is inserted therethrough, so that the second link 17 is attached to the bracket 5. On the other hand, it is held rotatably in the vertical direction.

Next, a slit is formed in the other end of the second link 17 in the horizontal direction, and a third link 18 is fitted therein and is axially supported via a pin 14, and the third link 18 is horizontally supported. It is held rotatably in the direction, which is integral with the body 3. An oiles bearing 13 is interposed between the second link 17 and the third link 18 via a pin 14, as shown in FIG.
The gap with 14 is extremely small. In addition, pin 14
A split pin 20 for retaining is inserted at the lower end of the. Moreover, the same thing as the oiles bearing 13 interposed between the third link 18 and the pin 14 is similar to the pin 15 and the first link.
It is also installed between 16. The third links 18 are fixed to the both ends of the main body 3 so as to project therefrom.

The main body 3 is composed of a combined body of the first member 1 and the second member 2. As shown in FIG. 1, the outer diameter of the first member 1 is reduced in three steps from one end to the other end, and the intermediate portion 7 and the small diameter portion 10 at the tip end are fitted into the tubular portion 8 of the second member 2. The second member 2 has a first tubular portion 8a, a second tubular portion 8b, and a third tubular portion 8c from the tip thereof, which are connected in series in the axial direction via a flange 22. The outer peripheral surface of the intermediate portion 7 of the first member 1 comes into contact with the inner surfaces of both ends of the first tubular portion 8a via the bushes 9, and the first member 1 is slidable in the axial direction and rotated around the axis. It is held movably.

Next, a male screw is formed at the tip of the small diameter portion 10 of the first member 1. Collars 19 are inserted into both ends of the small diameter portion 10, and a plurality of elastic bodies 6 made of annular disc springs are laminated and inserted in opposite directions between the pair of collars 19 and 19. Then, the nut 21 is double screwed and fastened to the tip of the small diameter portion 10 to form a loosening prevention structure for the small diameter portion 10. An inner flange portion 12 is projectingly provided on the inner surface of the second tubular portion 8b at the middle portion of the multiple elastic bodies 6 in the stacking direction. In addition, in order to form the inner flange portion 12 on the second tubular portion 8b, the outer circumference matches the outer circumference of the second tubular portion 8b, and
A ring material having an inner circumference larger than the outer circumference of the small diameter portion 10 may be welded and fixed to the edges of the second tubular portion 8b formed of a pair of tubular bodies. Both axial end surfaces of the inner flange portion 12 serve as spring seats for the elastic body 6. A pair of collars 19 are inserted through the small diameter portion 10 through which the elastic body 6 is inserted.
Each end surface of the elastic body 6 forms a spring seat of the elastic body 6.

Thus, the inner surface of the second tubular portion 8b has a first spring chamber 23 and a second spring chamber 24 on both sides of the inner flange portion 12 at the axial center thereof. As a result, the inner flange portion 12
The elastic body 6 composed of the disc springs on both sides is space-saving and can cope with both the tensile force and the compressive force (impact force) applied between the first member 1 and the second member 2. Further, various loads can be coped with by changing the number of annular disc springs forming the elastic body 6. By connecting the connecting rod thus formed between the drive side working locomotive for track maintenance and the second working vehicle and comparing it with the conventional connecting rod, the following experimental data were obtained. The total weight of the second work vehicle was 2 tons, and the second work vehicle without a brake was used. And in the conventional connecting rod,
When starting and stopping the work locomotive, an excessive load is applied between the second work vehicle with a pulling weight of 2 tons and the work locomotive, and the connecting rods, connecting part attachments, and connecting pins are heavily fatigued and frequently replaced. There was a need.

Further, although there were many complaints about noise from residents living along the track during night maintenance work, the connecting rod of the present invention does not generate any metallic noise from the connecting rod pointed out by the residents living along the track. It was This is because the universal joints 4 are provided at both ends of the main body 3 of the main connecting rod, and the gaps between the pivotal joints of the universal joint 4 are made extremely small, so that the metallic noise generated therefrom can be prevented. At the same time, the impact load generated when the vehicle stops moving is absorbed by the elastic body 6. Then, the elastic body 6 absorbs the metal fatigue of the load and the towed object, and the replacement of the connecting rod and the connecting pin becomes unnecessary for a long period of time. Further, it was confirmed that it can be used for maintenance vehicles having different towing weights by adjusting the length of the connecting rod and the absorbing force of the elastic body 6 made of a disc spring according to the weight of the towing load.

[0011]

The connecting rod of the maintenance work vehicle for track maintenance according to the present invention has a pair of universal joints, both ends of which are detachably attached to the vehicle through the brackets 5 and are provided at both ends of the main body 3. The displacement between the two vehicles can be smoothly accommodated by the vertical movement and the lateral movement of the connecting rod due to 4. Therefore, no noise is generated from the connecting rod. Also, the main body 3
Since the elastic body 6 is interposed between the first member 1 and the second member 2 so as to elastically repel in both directions of the axis,
Even if the connected vehicle has no brake, its elastic body 6
Thus, the shock from the connected vehicle can be absorbed, and various devices of the connected vehicle can be protected.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of a connecting rod of a maintenance work vehicle for track maintenance according to the present invention.

FIG. 2 is a cutaway front view of the same main part.

[Explanation of symbols]

 1 1st member 2 2nd member 3 Main body 4 Universal joint 5 Bracket 6 Elastic body 7 Intermediate part 8 Cylindrical part 8a 1st cylindrical part 8b 2nd cylindrical part 8c 3rd cylindrical part 9 Bushing 10 Small diameter part 11 Bolt hole 12 Inner flange Part 13 Oiles bearing 14, 15 Pin 16 First link 17 Second link 18 Third link 19 Collar 20 Split pin 21 Nut 22 Flange 23 First spring chamber 24 Second spring chamber

Front page continued (72) Inventor Tetsuhiro Saito 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Hiroshi Kobayashi 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Railway Co., Ltd. (72) Inventor Hideaki Nakajima 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Railway Co., Ltd. (72) Inventor Masao Saito 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Railway Co., Ltd.

Claims (3)

[Claims] 1. A connecting rod main body 3 in which elongated first members 1 are fitted to a second member 2 so as to be slidable in an axial direction, and a main body provided at both ends of the main body 3. A pair of universal joints 4 that are pivotally mounted about two axes that are orthogonal to each other with respect to the axis of 3, and a pair of brackets 5 that are provided at both ends of the main body 3 and are detachably attached to the vehicle. And an impact absorbing elastic body 6 which is interposed between the first member 1 and the second member 2 and elastically repels in both directions of their axes.
And a connecting rod for maintenance work vehicles for track maintenance. 2. The intermediate portion 7 and the outer periphery of the tip end portion of the first member 1 are inserted into the tubular portion 8 of the second member 2 according to claim 1, and the intermediate portion of the first member 1 is for sliding. A small diameter portion 10 having a small outer diameter is provided at the tip end portion or the intermediate portion of the first member 1 which comes into contact with the inner surface of the tubular portion 8 of the second member 2 via the bush 9 or directly. A connecting rod for a maintenance work vehicle for track maintenance, in which the elastic body 6 elastically elastically fitted in the small-diameter portion 10 is fitted, and the elastic body 6 is connected to the inner surface of the second member 2. 3. The elastic member 6 made up of a large number of annular disc springs is attached to the small diameter portion 10 of the first member 1 in directions opposite to each other, and the second member 2 is provided at an intermediate portion in the stacking direction. A connecting rod for a maintenance work vehicle for track maintenance, in which an inner flange portion (12) is projectingly fixed to the inner surface, and spring seats of the elastic body (6) made of the annular disc spring are formed on both axial side surfaces of the inner flange portion (12).