JPH0723628U - Tension balancer abnormality detection device - Google Patents

Abstract

(57) [Summary] [Purpose] When an abnormal situation occurs and a train line flows largely in one direction, and the tension balancer loses or may lose its function, this abnormality can be immediately notified by an electric signal. Install the detector so that it can comply with the tension balancer type and usage conditions. [Structure] The detection rod 8 is laterally projected at the upper end or the lower end of the weight W, and limit switches 10 and 16 are provided above and below the pole P so as to be in contact with the detection rod 8. When the detection rod 8 contacts the upper switch 10, the upper surface of the weight W and the upper bracket 4
The height positions of both limit switches are set so that there is an appropriate gap between the lower switch 5 and the lower switch 5 and between the lower surface of the weight W and the lower bracket 5. The height position is set by moving both limit switches in the vertical direction and the weight direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tension balancer abnormality detection device for use in a train line, and is capable of detecting an abnormal displacement of the train line in one direction when it is held.

[0002]

[Prior art]

 Train lines expand and contract due to temperature changes. The tension balancer absorbs the change in tension at that time and maintains a constant tension, but due to factors such as strong wind or wire breakage, the entire tension balancer may lose its flow adjustment function in one direction. As for the pulley type tension balancer, the weight suspended from the large pulley performs the adjusting action by going up and down between the upper and lower brackets that support the weight anti-vibration device, but due to an abnormal change, this moves to the upper or lower bracket. Upon contact, the adjustment function is lost. Conventionally, the height of the weight was visually inspected on a regular basis, but this is not enough. Even if an abnormality occurs immediately after the inspection, it will be known only after the influence has spread and a secondary accident has occurred. There has been a demand for a detection device that can be installed easily and that can detect an abnormality at the same time as or before it occurs.

[0003]

[Means for solving problems]

 The detection rod 8 is projected laterally from a part of the weight, and a pair of upper and lower limit switches 10 and 16 are provided on the pole P so as to be able to contact with the detection rod 8. The upper and lower limit switches determine the height position so that the weight comes into contact with the detection rod 8 when the weight contacts the upper and lower brackets 4 and 5, or before that. At this height position, the amount of vertical movement of the weight differs depending on the length of one diameter of the train line, temperature, wind, etc., so the limit switch can be moved vertically so that the position can be set freely. Provide possible mounting hardware. Also, in the mounting bracket, the distance between the weight W and the pole P differs depending on the type of tension balancer or if the pole P is a tapered column, and the limit switch is connected to the pole P to accommodate this. The position of the weight W can be adjusted.

[0004]

【Example】

 In FIG. 1, a large pulley 1a and a small pulley 1b are integrally formed and are supported by a pole P via a arm member 2. The suspension wire 3 of the weight W is retained on the large pulley 1a, and the trolley line T is retained on the small pulley 1b, respectively, to balance them. The upper and lower brackets 4 and 5 are fixed to the pole P at one end, and both ends thereof are joined by a vibration isolation rod 6. The weight W is formed by stacking a plurality of weight units, and the uppermost unit and the lowermost unit each have a pair of left and right ears 7, which are vertically inserted into the vibration isolation rod 6 and are incorporated in the vibration isolation device. To form. A detection rod 8 is projected from the ear 7 of the uppermost weight, and correspondingly, upper and lower limit switches 10 and 16 are provided to the pole P via a mounting member so as to be able to contact with the detection rod 8.

As shown in FIGS. 2 and 3, the mounting bracket comprises a guide base 9, an L-shaped adjusting bracket 11 and a limit switch mounting base 17, and is attached to the pole P by a band 15. The guide base 9 has both open end portions having a U-shaped cross section bent inward at right angles to form vertical guide grooves. Locking pieces 9a that come into contact with the poles P are fixed to both sides of the upper and lower ends. Further, adjacent to this, a through hole 9b for a band is formed.

In the adjustment fitting 11, one side of the L-shaped fitting 12 whose central portion is bent at a right angle abuts on the outer surface of the guide groove of the guide base 9, and its end is a right angle along the corner of the guide base 9. Bend to and attach. The clamp 13 is brought into contact with the inner side surface of the guide groove, and the nut 13a is welded to the outer surface of the hole formed at the end thereof. The butterfly bolt 14 is screwed into the nut 13a of the holding metal fitting 13 through a through hole formed in the end portion of the L-shaped metal fitting 12, and the adjusting metal fitting can be locked to the guide base by tightening. On the other side of the L-shaped metal fitting, two bolt slots 12a are formed at the base and the end respectively.

The limit switch mounting base 17 is made of a plate having a T-shaped cross section, the leg portion is joined to the other side of the L-shaped metal fitting 12, and the bolt hole of the leg portion is overlapped with the bolt long hole 12a. Tighten it. The limit switch 10 (16) is placed on the upper side of the mounting base 17 and attached so that the attached sensing rod 10a (16a) faces the above-mentioned inspection rod 8. Therefore, when the detection rod 8 contacts the upper limit switch 10, it is between the upper surface of the weight and the upper bracket 4, and when the detection rod 8 contacts the lower limit switch 16, the lower surface of the weight and the lower bracket. There is a slight gap between each of them.

These distances are different in the height position of the upper and lower limit switches at the height position of the detection rod 8 because the amount of movement of the weight varies depending on the span length of the train line, temperature, wind, and the like. Do by setting. First, the butterfly bolt 14 is loosened, and the adjustment fitting 11 is moved up and down along the guide groove. At the set position, the wing bolt 14 is tightened and fixed again. In the tension balancer, the distance between the weight W and the pole P differs depending on the type. Therefore, the switch mount 17 is attached to the base of the L-shaped bracket 12 or the bolt slot 12a at the tip end so that the sensing rod 10a (16a) of the upper and lower limit switch 10 (16) faces the sensing rod 8. Optional installation.

[0009] When the electric trolley wire is disconnected due to an unforeseen situation, or when the electric trolley wire abnormally moves in one direction to cause a flow phenomenon, the detection rod 8 of the weight moves greatly and the upper or lower limit rod is moved. At the observing position which is in contact with the sensing rod 10a (16a) of the switch 10 (16) and is distant from it, an abnormality is displayed by lighting a lamp or a buzzing sound. In a normal state, the movement of the detection rod 8 is kept within the interval between the upper and lower detection rods 10a (16a), and no abnormal signal is transmitted.

[0010]

【effect】

 Since the upper and lower limit switches for detecting an abnormality can be mounted so as to be movable in the vertical direction and between the pole P and the weight W, it is possible to correspond to the tension balancer type and usage conditions. Therefore, even an existing tension balancer can be easily attached, which eliminates the need for conventional periodic inspections by workers for the purpose of detecting abnormalities, and can prevent secondary accidents due to abnormalities.

[Brief description of drawings]

FIG. 1 is an explanatory view of use of the present invention.

FIG. 2 is an explanatory view of mounting of the present invention.

FIG. 3 is a plan view of the present invention.

FIG. 4 is an upper front view of the present invention.

[Explanation of symbols]

 1a, 1b Large and small pulleys 2 Brackets 3 Wires 4, 5 Vertical brackets 6 Shaking rods 7 Ears 8 Detecting rods 9 Guide bases 9a Locking pieces 9b Through holes 10 Upper limit switches 10a Sensing rods 11 Adjustment fittings 12 L-shaped fittings 12a Bolt slot 13 Clamping bracket 13a Nut 14 Butterfly bolt 15 Band 16 Lower limit switch 16a Sensing rod 17 Limit switch mount P Pole T Train line W Weight

Claims (1)

[Scope of utility model registration request] 1. A balancer device for supporting a pulley of large and small sizes to a pole via a armband, and holding a train line by the small pulley and a weight suspension wire by the large pulley, and an upper and lower bracket fixed to the pole at one end. A pair of ears are attached to the upper and lower ends of the weight by tying both ends of the same with a swing rod, and the pair of ears are engaged with the swing rod so that it can be moved up and down, and the weight is projected in the pole direction from the weight. Detecting rod and long guide base with both open ends of U-shaped cross section bent inward at right angles to form vertical guide grooves,
An adjustment metal fitting that bends the central portion at a right angle and one end of which abuts against the outer surface of the guide groove, and is clamped so as to be vertically movable with respect to the bent portion of the guide base by a sandwiching metal fitting that abuts against the inner surface of the guide groove. And a limit switch mounting base with a T-shaped cross section whose upper side is located on the adjusting bracket and the leg side is locked to the other end of the adjusting bracket, and the attached sensing rod mounted on the limit switch mounting base is detected. An abnormality detection device for a tension balancer, which is provided with a limit switch facing the rod.