JPH0717625Y2 - Train passage detector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a train passage detection device of a train approach alarm that is used in a work along a railroad track and detects and approaches a train approaching.

"Prior art" When conducting work along railway lines, various inspections and maintenance work are performed between the passage of one train and the passage of the next train. In this case, a train approach warning device is used as a measure for preventing an accident when the train passes.

Here, as a conventional example of a train approach warning device, a train passage detection device is installed at a position distant from the work site, and when a train is detected, a train detection signal is installed on the work site by wire or wirelessly. There is known a train approach warning device that transmits to the body of the approach warning device to warn that a train is approaching.

A train passage detection device used in this type of train approach warning device will be described below with reference to FIGS. 7 and 8. This train passage detection device has a base 10 having a U-shaped notch 11, two hook bolts 12 and a lock nut for fixing the base 10 to the rail 20, and a mounting position of the base 10. A set screw 13 to be fixed, three screw shafts 14 planted on the upper surface of the base 10, a support plate 16 fixed to the screw shaft 14 with nuts 15, and a sensor 17 supported by the support plate 16. Composed of and.

The sensor 17 includes a sensor main body 17A and a sensor support 17B that elastically protrudes and supports the sensor main body 17A.
Composed of and. That is, the sensor main body 17A is elastically projected upward and supported by a spring mounted on the sensor support 17B, and can be sunk into the sensor support 17B when an external force is applied from above. .

The sensor body 17A houses, for example, a proximity switch that detects the approach of a magnetic material, and has a structure that magnetically detects a wheel passing through the rail 20.

Reference numeral 18 denotes a dropout detection sensor that detects that the base 10 has fallen off the rail 20.

[Problems to be solved by the invention] In the conventional train passage detection device, the base 10 is fixed to the rail 20 by the hook bolts 12, and the height position of the support plate 16 supported by the screw shaft 14 and the long hole 16A are fixed. Support plates along 1
The front and rear positions of 6 are adjusted so that the side surface of the sensor body 17A is in a position close to the side surface of the rail head. At this time, the upper surface (sensing surface) of the sensor body 17A is set at a position slightly lower than the tread surface of the rail 20.

When the base 10 is fixed to the bottom 20 'of the rail 20 by tightening, the lock nut is rotated and fixed by a spanner or other tightening tool. When positioning and adjusting the support plate 16 supporting the sensor 17 with respect to the rail 20, the three sets of screw shafts 14 and lock nuts 15 are rotated by a wrench or other tightening tool as in the case of fixing. Move and fix. In any case, a lot of labor and time are required. It is also necessary to prepare the tightening tool beforehand.

Furthermore, since the dropout detection sensor 18 is directly connected to the base 10,
Even with this, it is difficult to tighten and fix the base 20 to the bottom portion 20 'of the rail 20. On top of that, a dropout detection sensor
Since 18 and the sensor body 17A are installed in different places, even if the sensor body 17A itself fails due to a dropout, if the dropout detection sensor 18 is normal, this dropout failure cannot be detected and a failure occurs. You will not meet the safety principles.

Further, this train passage detecting device has a structure in which the sensor body 17A can sink into the sensor support 17B against an external force from above.

The reason for adopting this structure is as follows.

In other words, the wheels of a normal train have a flange only on the gauge side. Therefore, the train passage detection device is used by being installed outside the gauge.

On the other hand, construction pushcarts have both flanged wheels. This is because both flange wheels may sometimes pass over the train passage detection device, but in this case, the sensor body 17A is pushed by the flange of the wheel and sinks downward so as not to escape and be damaged.

By the way, there are many sands, iron powders, etc. in the track, and these often enter the gap between the sensor body 17A and the sensor support 17B, which makes it difficult for the sensor body 17A to move.

When the above-mentioned both flange wheels pass and external force is applied to the sensor body 17A from above in a state where the sensor body 17A is hard to move, an unreasonable force is applied to the sensor body 17A or the sensor support body 18B or the support plate 16 There is a drawback that accidents such as damage will occur.

This invention can fix and position the train passage detection device on the rail very easily and easily without using a tool device for special fixing and positioning adjustment.
Less mechanical damage due to passage of both flange wheels,
The present invention provides a train passage detection device that satisfies the failure safety principle.

"Means for Solving the Problem" The rail bottom 20 'tightening device according to the present invention includes a base 10 having a through hole formed therein, an engaging member 31 having a through hole formed therein, and one end portion of which is threaded. It is composed of a base tightening shaft 30 inserted into the through hole, an adjusting nut 32 screwed to the base tightening shaft 30, and an operation lever 40 link-connected to the other end of the base tightening shaft 30.

And, it is provided with a pillar 50 which is planted on the base 10. A vertical rotation arm 51 pivotally supports one end of the column 50. A first shaft 54 is attached to the other end of the vertical rotation arm 51, and the vertical shaft is biased upward by a spring 52 so as to be held in a horizontal state, and extends in the length direction of the rail 20. ing.

Further, the train passage detection device of the present invention is a wheel detection sensor.
A sensor support body 60 is provided which accommodates the drop detection sensor 62 and the drop detection sensor 62 and is supported by a second shaft 58 which is fastened and attached to a second fastening fitting 57.

Further, a first fastening fitting for fastening the first shaft 54 in which a fitting hole 55A that is released to the outside via a slot 55B and a threaded hole 55C that is bored in a direction intersecting with the slot 55 are formed. 55, a second fastening fitting 57 in which a fitting hole 57A that is released to the outside through a slit 57B and a through hole 57C that is formed in a direction intersecting with the slit 57C, and a through hole 56 'are formed. Installed 1st tightening bracket 55
Member 56 interposed between the second fastening member 57 and the second fastening member 57, and the through hole 57C of the second fastening member 57 and the through hole 56 'of the spacing member 56.
There is provided a sensor support body positioning adjustment device including a tightening bolt 59 having a manipulator 59A which is screwed into the threaded hole 55C of the first tightening metal fitting 55 by being inserted into.

"Embodiment" FIGS. 1 to 6 show an embodiment of the present invention. 10 in the figure
Is a base, and 20 is a rail, which is the same as the description of the prior art.

The base 10 has a U-shaped notch 11 in which the rail 20
Bottoms 20 'are arranged to engage.

One hole is formed in the base 10 in a direction orthogonal to the U-shaped cut 11, and one base tightening shaft 30 is formed in this one hole.
(Fig. 3) is penetrated. Shaft 30 is the bottom of rail 20
Projected to the opposite side across 20 '
31 is provided.

A screw is cut on the tip side of the shaft 30, and a nut 32 is hooked on this screw. By manually adjusting the position of the adjusting nut 32, the position of the engaging element 31 can be arbitrarily set, and the structure can cope with the difference in the width of the rail bottom portion depending on the type of rail.

The rear end side of the shaft 30 is projected rearward of the base 10, and the lever 40 is attached to the protruding end by a shaft 41 so as to be rotatable in the bending direction with respect to the shaft 30.

A link lever 42 is linked between the lever 40 and the base 10. When the lever 40 is rotated by the link connection of the link lever 42, the shaft 30 is thrust with respect to the base 10.

That is, when the lever 40 is rotated in the clockwise direction from the state shown in FIG. 1, the shaft 30 is pulled out in the left direction in the figure, and the engaging element 31 is pulled toward the base 10.

By setting the position of the nut 32 to an appropriate position, the bottom of the rail 20 is pinched between the base 10 and the engaging member 31 when the lever 40 is in a vertical position as shown in FIG. The base 10 can be fixed to the rail 20.

A lock metal fitting 43 is attached to the free end of the rotation of the lever 40, and the lock metal fitting 43 is a strut projecting upward from the base 10.
By hooking on the claw 50A provided on the side of 50, the lever 4
Zero movement is locked.

As shown in FIG. 4, a pivot arm 51 is pivotally supported on the column 50 by a horizontal axis. The rotating arm 51 is supported in parallel with the longitudinal direction of the lever 20, receives an upward biasing force by a spring 52, and is pressed against a ceiling plate 53 provided at the upper end of the column 50 to maintain a substantially horizontal posture. It Therefore, in the following, the ceiling plate 53
Will be referred to as a stopper.

A first shaft 54 is attached to the free end of the rotating arm 51 in a vertically downward posture, and a first tightening fitting is attached to the first shaft 54.
55 is tightened and fixed.

As shown in FIG. 6, a second fastening member 57 is supported by the first fastening member 55 via a spacing member 56 so as to be freely fastened by a fastening bolt 59. The second shaft 58 is passed through the second tightening fitting 57 and tightened by the tightening operation of the tightening bolt 59.

That is, the first tightening metal fitting 55 and the second tightening metal fitting 57 have holes 55, respectively.
A, 57A and the slot 55B that is cut out from these holes 55A, 57A to the outside.
57B and tightening bolts 59 that tighten these slot 55B and 57B,
It is composed of an operator 59A for rotating the tightening bolt 59.

The tightening bolt 59 is threaded only at the tip, and this screw is screwed into one of the blocks divided by the slit of the first tightening metal fitting 55, and the tightening bolt 59 is tightened to the first position. The tightening metal fitting 55 and the second tightening metal fitting 57 have a structure capable of simultaneously tightening and relaxing.

The sensor support 60 is attached to the upper end of the second shaft 58 held by the second tightening member 57. A wheel detection sensor 61 that detects the passage of wheels is provided on the upper surface of the support body 60, and a dropout detection sensor that detects that it is in contact with the rail 20 on the side surface.
62 is provided.

As the wheel detection sensor 61 and the falling detection sensor 62, a proximity switch that detects the approach of a magnetic material without contact can be used.

According to the above configuration, when the base 10 is mounted on the bottom 20 'of the rail 20, the bottom 20' of the rail 20 and the base 10 of the rail bottom tightening device are adjusted by manually adjusting the position of the adjusting nut 32. 1 and the engaging member 31, the lever 40 is pivotally operated in a state where the mutual positional relationship is set as shown in FIG. The joint 31 engages with the bottom side of the rail 20 on the opposite side, and the lever 40 is raised from the state shown in FIG. 1 to the state shown in FIG.
The rail 20 is sandwiched between and the base 10 is fixed.
As described above, the positioning adjusting device including the first tightening fitting 55, the second tightening fitting 57, the spacing member 56, and the tightening bolt 59 is configured.

Along with this, the tightening bolt 59 is rotated by the operator 59A, and the first tightening fitting 55 and the second tightening fitting 57 are slightly loosened by operating the operator 59A. It is possible to position and adjust the whole body in the vertical direction, and also to position and adjust the second shaft 58 in the vertical direction with respect to the second fastening member 57, and thus to position the sensor support body 60 supported thereby in the vertical direction. Can be adjusted. Further, the second tightening metal fitting 57 uses the tightening bolt 59 as a rotating shaft, and the first tightening metal fitting 55.
Since it can rotate with respect to the second shaft 58, the second shaft 58 tightened by the second tightening member 57 and the sensor support 60 supported thereby can be rotationally adjusted with respect to the rail 20. By this adjustment, the wheel detection sensor 61
The wheel detection surface of can be set to be in a posture parallel to the tread surface of the rail 20.

Therefore, the support 60 is supported by hand, aligned with a desired position with respect to the rail 20, and in this state, the operating element 59A is operated to tighten the first tightening metal fitting 55 and the second tightening metal fitting 57 for support. The body 60 can be immediately fixed in its desired position.

[Advantage of the Invention] As described above, in the case where the train passage detecting device is mounted on the bottom portion 20 ′ of the rail 20, the adjustment nut is first
By manually adjusting the position of 32, the bottom 20 'of the rail 20 and the base 10 of the rail bottom tightening device and the engaging element 31 are set to have a mutual positional relationship as shown in FIG. Then, the operation lever 40 is rotated. The installation of the train passage detection device on the rail 20 is completed by this extremely simple and easy two-stroke process. Then, the mounting position of the sensor support 60 on the rail 20 is adjusted by the operator 59.
When A is operated and the tightening metal is loosened a little,
The positioning adjustment of the entire positioning adjustment device with respect to the shaft 54 is performed in the vertical direction, and the positioning of the second shaft 58 is adjusted in the vertical direction with respect to the second fastening member 57 to adjust the sensor support 60 in the vertical direction. Then, the second shaft 58 clamped to the second clamp 57 and the sensor support 60 supported thereby are rotated about the clamp bolt 59 to adjust the positional relationship with respect to the rail 20. Here, operate the operator 59A to operate the first tightening bracket 5
Rail 2 by tightening 5 and the 2nd clamp 57
The mounting positioning adjustment of the sensor support 60 with respect to 0 is completed.

The above-mentioned mounting and positioning adjustment of the train passage detection device on the rail 20 does not require any special mounting and positioning adjustment tool, and can be carried out only by extremely simple manual operation.

Further, since the support body 60 is rotatably supported in the vertical direction by the rotating arm 51, when an external force is applied to the support body 60 from above, the support body 60 can sink downward in response to the external force.

Since the support 60 is sunk by the rotating arm 51, the structure is simple, and even if some sand, iron powder, or the like adheres to it, an accident that would hinder the movement does not occur. Therefore, a highly reliable train approach warning device can be configured.

Further, in the present invention, since the dropout detection sensor 62 is provided integrally with the wheel detection sensor 61, if the support body 60 is dropped off from the upper end of the second shaft 58, for example, or after the both flanged wheels have passed, the rotating arm 51. Even if a situation occurs in which the robot does not return to its original posture, that situation can be detected and the principle of failure safety is satisfied. Then, mount the dropout detection sensor 62 on the base.
Since it is separated from 10 and integrated with the wheel detection sensor 62, the fixing work can be made extremely easy and easy without fixing the train passage detection device to the rail.

As described above, the train passage detection device of the present invention can be fixed and positioned on the rail very easily and easily without using a tool device for special fixing and positioning adjustment, and the two flange wheel It can be said that the train passage detection device has less mechanical damage due to passage and satisfies the principle of failure safety.

[Brief description of drawings]

1 and 2 are sectional views showing an embodiment of the present invention,
FIG. 3 is a plan view of the device according to the present invention, FIG. 4 is a side view for explaining a support structure of a support of the device according to the present invention, FIG. 5 is a sectional view seen from the side, and FIG. The top view for demonstrating the structure of the clamp used in the Example of this invention,
FIG. 7 is a side view for explaining the conventional technique, and FIG. 8 is a plan view thereof. 10: Base, 20: Rail, 30: Shaft, 31: Engagement, 40: Lever, 50: Support, 51: Rotating arm, 53: Stopper, 55: First
Tightening metal fittings, 57: Second tightening metal fittings, 58: Tightening bolts, 59: Operator, 60: Support body, 61: Wheel detection sensor, 62: Fallout detection sensor.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Showa 55-46060 (JP, U) Showa 58-12061 (JP, U) Japanese Patent Showa 32-209 (JP, B1) Show 11- 3041 (JP, Y1)

Claims (1)

[Scope of utility model registration request] 1. A train passage detection device comprising a wheel detection sensor and a dropout detection sensor, a sensor support positioning adjustment device, and a rail bottom fastening device, wherein a base (10) having a through hole and a through hole are provided. An engaging element (31) to be bored, a base tightening shaft (30) whose one end is threaded and inserted into both through holes, and an adjusting nut (32) screwed to this.
And a pillar (50) which is equipped with a rail bottom (20 ') tightening device including an operation lever (40) link-connected to the other end of the base tightening shaft (30), and which is planted on the base (10). ), One end of which is pivotally supported by the column (50) and the other end of which is first
The shaft (54) is attached, and the spring (52) biases the column (50) upwards and keeps it horizontal.
A vertical rotation arm (51) extending in the length direction of the rail (20) is provided, and the wheel detection sensor (61) and the dropout detection sensor (62) are housed and fastened to the second fastening metal fitting (57). The sensor support body (60) supported by the attached second shaft (58) is provided, and the fitting hole (55A) which is released to the outside through the slit (55B) and the hole formed in a direction intersecting with the slit. 1st where the threaded hole (55C) to be installed is formed
Shaft (54) first tightening fitting (55), slot (57)
A second fastening member (57) having a fitting hole (57A) released to the outside via B) and a through hole (57C) formed in a direction intersecting with the slot, and a through hole ( 56 ') is bored and is interposed between the first tightening fitting (55) and the second tightening fitting (57), and the through hole (57C) of the second tightening fitting (57). ) And the through hole (56 ') of the spacing member (56), and is screwed into the threaded hole (55C) of the first tightening fitting (55) and has an operator (59A). A train passage detection device comprising a sensor support positioning adjustment device comprising the following.