JPS6095002A - Vibration and shock insulating clamp apparatus for railroad - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates in particular to an improved clamping device for attaching such devices to the rails of a track.

US Pat. No. 3,545.005 discloses a thermal axle box detector designed to be mounted on a rail separate from the ballast mounted detector. A rail-mounted detector scanner eliminates the need for foundations and maintenance, as well as the ongoing maintenance associated with monthly alignment of ballast-mounted scanners. The periodic alignment of the scanners attached to the ballast prevents "rail creep" caused by trains passing near the scanners and "rail run raids".
l run)” alone is necessary to pinpoint scanner light spot positions that tend to move as a result of movement of the foundation to which the scanner is mounted. In addition, rail-mounted scanners According to the authors, all bearings within a given bearing type can be scanned identically by maintaining a fixed relationship between the scanner, the wheel detection transducer, and the bearing housing. , the scanner can be mounted on a rail and moved along with the rail.

Thus, while rail mounting of thermal axle box detectors certainly has significant benefits compared to ballast mounting, there are two negative factors.

(1) Sensitive electrical components of the scanner must be effectively isolated from the rails to protect them, and (2) mechanical components of the scanner move with the rails. The result is that they are exposed to even more fatigue.

In view of the above, it is a principal object of the present invention to provide an improved clamping device for mounting thermal box detection scanners and the like to rails.

Another object is to provide a fixture with relatively simple means of adjustment and alignment.

Yet another object is to provide a handle having improved electrical insulation and mechanical shock and vibration isolation means.

Yet another object is to provide a fixture that can be easily reattached to existing systems.

Yet another object is to provide a fixture that is adjustable to various rail sizes and rail cants.

Still other objects and advantages will become apparent from the following description of the invention.

The above and other beneficial objects and advantages are achieved by the present invention.
This is achieved by providing an improved clamping device for attaching the instrument to the track rail. The clamping device has an elongated housing having a platform at one end and a threaded rod at the opposite end. Shock and vibration isolation means are mounted on a platform electrically isolated from the plant platform.

The first rail pawl is fixed to the plant platform facing towards the threaded rod. A second rail pawl floats on the threaded rod and is directed toward the plant platform. A nand screwed into the threaded rod forces the second rail pawl toward the platform. Cant adjustment Nando is
It is located between the rail pawls adjacent to the second rail pawls. Cant Adjustment The faces of the nand are at unequal distances from the nand axis to allow for cant adjustment of the clamping device relative to the rail when the clamping device is mounted on the rail.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

Referring to the drawings, and in particular to FIG. 1, a clamping device 10 according to the present invention is shown as comprising an elongated housing having a platform 14 at one end thereof. A pair of shock and vibration isolators 16, 18 are attached to plant home 14 by a series of bolts 20. Isolators 16,18 are commercially available shock mounts such as Barry isolators.

As shown in FIG. 4, each insulator has a cylinder 22 to which is mounted a cup-shaped washer 23 and an inverted cup 28. As shown in FIG. The cups are held together by the rounded edges of the hollow cylinder 22. A flanged cup 38 is located between the cup-shaped washer 23 and the cup 28 without touching the cylinder 22. These cups are separated from each other by a silicone elastomer backing 30, 32 as shown. It is also an excellent electrical insulator. Upper cup 28 is electrically isolated from the bottom of the scanner by an insulating plate 34 formed of a suitable electrically insulating material such as G-10 fiberglass. Similarly, the screws 24 securing the scanner 40 of the insulator are secured to the scanner 40 by means of punching 36 made of G-10 fiberglass.
insulated from An insulator is attached to platform 14 at flange 38. Scanner 40 is attached to the insulator by screw 24, which is accessible by the opening in clamp 10 as shown.

As a result, the scanner is electrically isolated from the rail.

Inwardly directed rail pawls 42 are integrally formed with the platform 14 and attached to the housing 12. Claw 4
4.46 is hooped to receive the outwardly facing flange 48 of the rail 50.

A threaded rod 52 extends from the housing and an outward rail pawl 54 swings over the rod. The pawl 54 consists of a shaped finger 58 that is looped to receive an inwardly directed flange 60 of the rail 50. nut 62
and conical washer 64 cooperate in urging rail pawl 54 toward pawl 42 and locking the rail pawl in place around the bottom flange of rail 50 as shown in FIG. do.

Adjustment nut 66 is used to correct the cant of rail 50.
The claw is provided adjacent to the outer surface 68 of the pawl 54. A nut 66 is threaded into engagement with rod 52 so that nut 66 can be moved along the rod with adjustment of the position of pawl 54.

As shown in FIG.
4 and 76 are unequally spaced from axis 78 of nut 66. As a result, surfaces 70, 7
By bringing various external surfaces of 2.74.76 into contact with the rail flange, the clamping device 10 can be rotated about the rail flange. The degree of rotation is determined by the special surface 70 of the cantonand 66 that contacts the bottom surface of the rail.
72, 74 or 76, and these planes are then determined by the extent of the cut to be corrected.

In particular, the two clamping devices disclosed herein typically -
Used to secure pieces of equipment to rails. A device is bolted to each of the four insulators thus provided.

In this way, the foregoing objectives are largely achieved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a rail clamping device according to the present invention, FIG. 2 is an enlarged side view of the cant adjusting means of the rail clamping device, and FIG.
FIG. 4 is an enlarged cross-sectional view of the shock isolator. 12...Housing 14.Skewer/Plant home 16
, 18... electrical insulation and vibration isolation means 44, 46
．． ...First rule pawl 48...Rail flange 5
20. Threaded rod 54... Second rail pawl 62...
Nut 64...Conical washer 66...Rail cant adjustment means - Agent Hikaru Esaki Good agent Hikaru Esaki

Claims (6)

[Claims] (1) an elongated housing, a brathome at one end of the housing, electrical and vibrational isolation means attached to the bratbohm, and a means attached to the housing and facing in an opposite direction from the brathome; a first rail pawl spaced apart from said first rail pawl and facing toward said platform; and said first and second rail pawls. A number of railway implement rails are provided, comprising means for biasing the pawls toward each other and around the rail flanges sandwiched therebetween, and rail cant adjustment means adjacent to the two of said rail pawls. clamping device. (2) the housing has a threaded rod extending longitudinally from the Blattbohm and is attached to the housing, and a foreload biasing means is attached to the threaded rod externally to the second body; A clamping device according to claim 1, comprising a nut. (3) The clamping device according to claim 1, wherein the cant adjustment means includes a nand attached to the screw rod inside a second portion. (4) The clamp device according to claim 3, wherein the cant adjustment nand has surfaces arranged at unequal distances from the axis of the nut. (5) The insulating means includes a hollow cylinder, an outer inverted cup fixed to one end of this cylinder, and an inner inverted cup located outside this (Ulj cup and fixed to the other end of the cylinder). an inverted cup, said cup being filled with a cushioning material, and said insulating means passing through an opening in said cylinder for securing said railway implement to a clamping device;
2. A clamping device as claimed in claim 1, further comprising reservoir means for insulating said railway implement from said outer cup and said clamping means. (6) The insulating means comprises a sheet of insulating material sandwiched between the device and the outer cup and a bushing of insulating material disposed around the fastening means. Clamp device according to clause 5.