CN204881446U - Subway condact rail dipperstick - Google Patents

Abstract

The utility model provides a subway condact rail dipperstick, include the blade and install on the blade and can follow the gliding slide bar of blade, be provided with the benchmark scale on the slide bar, be provided with deviation scale on the blade, still be provided with on the slide bar and be used for measuring the lead high measuring mechanism of condact rail bottom surface apart from rail rail surface height. The utility model provides a subway condact rail dipperstick, the work height and the deviant of its ability direct measurement condact rail to not fragile, measurement accuracy is high.

Description

A metro contact rail measuring ruler

technical field

The utility model relates to a subway contact rail measuring ruler, which is used for measuring the guide height, pull-out value and rail spacing of a subway, and belongs to the technical field of metro power supply contact rail inspection and measuring tools.

Background technique

At present, the subway uses the contact rail (also known as the third rail) for power supply. During maintenance, it is necessary to measure the working height (also known as the guide height) and offset value (also known as the pull-out value) of the contact rail. Currently, the measurement generally uses the construction unit A self-made measuring ruler is welded on the end of the ruler in the horizontal and vertical directions. The horizontal direction is used to measure the offset value of the contact rail (also known as the pull-out value), and the vertical direction is used to measure the working height of the contact rail (also known as the guide rail). High), long-term wear and tear will cause the gap between the measuring scale to increase, which will affect the measurement accuracy, and because the length of the measuring scale is too large, it cannot be carried around, and it needs to be transported to the maintenance station by an engineering vehicle; the existing technology also has a foldable Although this kind of measuring ruler is convenient to carry, it still has the following disadvantages: First, due to the folding structure, it is necessary to loosen the bolts to adjust when measuring, the joint is easy to be damaged, and the rigidity of the ruler body is poor. , which affects the measurement accuracy; second, the gap between the moving positions of the measuring head is large, resulting in large measurement errors; third, it is impossible to measure the rail gauge, and it is necessary to use a tape measure or a gauge ruler to cooperate with the measurement to calculate the contact rail offset value (also known as Pull out value), time-consuming and inefficient.

Utility model content

Based on the above deficiencies, the technical problem to be solved by the utility model is to provide a metro contact rail measuring ruler, which can directly measure the working height and offset value of the contact rail, is not easily damaged, and has high measurement accuracy.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A metro contact rail measuring ruler, comprising a ruler body and a slide bar mounted on the ruler body and sliding along the ruler body, the slide bar is provided with a reference scale, the ruler body is provided with an offset scale, the slide bar There is also a height guide measuring mechanism for measuring the height of the bottom surface of the contact rail from the rail surface of the rail.

The ruler is provided with a guide groove, and the slide bar is provided with a protrusion that can slide along the guide groove, or the ruler is provided with a protrusion, and the slide bar is provided with a protrusion that can slide along the guide groove. Sliding guides.

One end of the ruler body is fixed on the first insulating base, and the other end is fixed on the second insulating base.

A first positioning bearing is arranged on the first insulating base.

The height guide measuring mechanism includes a height measuring rod and a height scale that can slide along the height measuring rod, the height measuring rod is fixedly arranged on the slide rod, and a reference scale is arranged along the height direction on the height scale, An offset scale is arranged on the height measuring rod along the height direction.

The height scale is fixed on the height measuring head, and the height measuring head is fixed on the height measuring slider which can slide along the height measuring rod.

The height measuring rod is provided with a guide groove, and the height measuring slider is provided with a protrusion that can slide along the guide groove, or the height measuring rod is provided with a protrusion, and the height measuring slider is provided with a protrusion that can slide along the guide groove. A guide groove that can slide along the protrusion is provided.

A buffer spring is also included, and the two ends of the buffer spring are respectively connected with the height measuring head and the slide bar.

It also includes a gauge measuring mechanism, which includes a gauge measuring slider that can slide along the ruler body, and a gauge scale installed on the ruler body, and the gauge measuring slider is provided with The reference scale is provided with an offset scale on the gauge scale.

The gauge measuring slider is provided with a second positioning bearing.

Adopt above technical scheme, the beneficial effect that the utility model obtains is:

The utility model provides a metro contact rail measuring ruler, which can directly measure the working height and offset value of the contact rail, adopts a sliding rail structure, is not easy to be damaged, and has high measurement accuracy.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the technology of the present utility model is described in further detail:

Fig. 1 is the structural diagram of the utility model subway contact rail measuring ruler;

Fig. 2 is the use status diagram of the utility model subway contact rail measuring ruler;

Fig. 3 is a structural diagram of the utility model subway contact rail measuring ruler in a measuring state.

Detailed ways

As shown in Figures 1-3, the subway contact rail measuring ruler provided by the utility model includes an offset value measuring mechanism, and the offset value measuring mechanism includes a ruler body 1 and is installed on the ruler body 1 and can slide along the ruler body 1 The slide bar 2 is provided with a reference scale, the ruler body 1 is provided with an offset scale, and the slide bar 2 is also provided with a guide height measuring mechanism for measuring the height of the bottom surface of the contact rail from the rail surface.

Among them, one end of the ruler body 1 is fixed on the first insulating base 3, and the other end is fixed on the second insulating base 4. Both the first insulating base 3 and the second insulating base 4 are made of insulating rubber sheets. The purpose is to prevent the contact rail measuring ruler from short-circuiting the track circuit when placed on the rail surface. The first insulating base 3 is provided with a first positioning bearing 31, and the first positioning bearing 31 is a bolt bearing, which can change sliding friction into rolling friction, reduce the friction force of the measuring ruler, and prevent the measuring ruler from wearing and tearing. The ruler body 1 is provided with a guide groove, and the slide bar 2 is provided with a protrusion that cooperates with the guide groove and can slide along the guide groove, or the ruler body 1 is provided with a protrusion, and the slide bar 2 is provided with a protrusion that is compatible with the guide groove. A guide slot that fits and slides along the protrusion. The slide bar 2 is provided with a reference scale, the reference scale is the 0 scale, the scale body 1 is provided with an offset scale 11, and the offset scale 11 is engraved with an offset scale, and the offset scale includes the standard value engraved on the scale body 1 Scale M, and positive offset scales to the left of the M scale and negative offset scales to the right, respectively.

Wherein, the height guide measuring mechanism includes a height measuring rod 5 and a height scale 6 that can slide along the height measuring rod 5, the height measuring rod 5 is fixedly arranged on the slide bar 2, and the height measuring rod 6 is provided with a reference mark along the height direction, The reference scale of this embodiment is 200mm, which means that the base height of the contact rail bottom surface from the rail surface is 200mm, and the height measuring rod 5 is provided with an offset scale along the height direction, and the offset scale includes 0 scale and a positive position above the 0 scale. The offset scale and the negative offset scale below the 0 scale, when reading, add the reference scale and the offset scale corresponding to the reference scale to get the guide height. Further, the height scale 6 is fixed on the height measuring head 7, and the height measuring head 7 is fixed on the height measuring slider 8 that can slide along the height measuring rod 5, and the height measuring head 7 is provided with a positioning post 71. The height measuring rod 5 is provided with a guide groove, and the height measuring slider 8 is provided with a protrusion that can slide along the guide groove, or the height measuring rod 5 is provided with a protrusion, and the height measuring slider 8 is provided with a protrusion that can slide along the guide groove. Sliding guides. The height guide measuring mechanism also includes a buffer spring, and the two ends of the buffer spring are respectively connected with the height measuring head 7 and the slide bar 2 to reset the height measuring head 7 .

Among them, a gauge measuring mechanism is also included, and the gauge measuring mechanism includes a gauge measuring slider 9 that can slide along the ruler body 1, a limit block 12 arranged on the ruler body 1, and a rail mounted on the ruler body 1. The distance scale 10 is provided with a reference scale on the gauge measuring slider 9, and the gauge scale 10 is provided with an offset scale. The gauge measuring slider 9 is provided with a second positioning bearing 91, and the second positioning bearing 91 is a bolt bearing. The reference scale is the 0 scale, the gauge body 1 is equipped with a gauge scale 10, and there are two rows of scales engraved on the gauge scale 10, one row is engraved with the standard scale N of the gauge and the positive and negative deviations on both sides of the standard scale N. Move the scale, the other row of scale value is center distance scale value, its value is 1/2 of the track gauge scale value. When measuring the gauge, the first locating bearing 31 is leaned against the inner side of one of the rails, and the gauge measuring slider 9 is slid until the second locating bearing is in contact with the inner side of the other rail, and then the reading on the gauge scale is read. Equal to the standard scale N plus the positive or negative offset scale, which is the scale aligned with the 0 scale.

As shown in Figure 3, when measuring the offset value, the positioning column 71 of the height measuring head is close to the side of the contact rail near the rail, and the first positioning bearing 31 is connected to the outer side of the rail near the contact rail (far away from the side of the contact rail) side) and offset the reading on scale 11.

Finally, it should be noted that the above are only preferred embodiments of the utility model, and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, for those skilled in the art, it is still It is possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features, but within the spirit and principles of the present utility model, any modifications, equivalent replacements, improvements, etc. Included within the protection scope of the present utility model.

Claims (10)

1. a subway contact rail measuring ruler is characterized in that: comprise a ruler body and be installed on the ruler body and the slide bar that can slide along the ruler body, described slide bar is provided with reference scale, and described ruler body is provided with offset Scale, the slide bar is also provided with a guide height measuring mechanism for measuring the height of the bottom surface of the contact rail from the rail surface of the rail. 2. The metro contact rail measuring ruler according to claim 1, characterized in that: said ruler is provided with a guide groove, said slide bar is provided with a protrusion that can slide along said guide groove, or said ruler The body is provided with a protrusion, and the slide bar is provided with a guide groove that can slide along the protrusion. 3. The metro contact rail measuring ruler according to claim 1, characterized in that: one end of the ruler body is fixed on the first insulating base, and the other end is fixed on the second insulating base. 4. The metro contact rail measuring ruler according to claim 3, characterized in that: a first positioning bearing is arranged on the first insulating base. 5. The subway contact rail measuring ruler according to claim 1, characterized in that: the height-guiding measuring mechanism comprises a height measuring rod and a height scale that can slide along the height measuring rod, and the height measuring rod is fixedly arranged on On the slide bar, a reference scale is set along the height direction on the height scale, and an offset scale is set on the height measuring rod along the height direction. 6. The subway contact rail measuring ruler according to claim 5, characterized in that: said height scale is fixed on a height measuring head, and said height measuring head is fixed on a height measuring slide block that can slide along said height measuring rod superior. 7. The subway contact rail measuring ruler according to claim 6, characterized in that: said height measuring rod is provided with a guide groove, said height measuring slider is provided with a protrusion that can slide along said guide groove, Or the height measuring rod is provided with a protrusion, and the height measuring slider is provided with a guide groove that can slide along the protrusion. 8 . The metro contact rail measuring ruler according to claim 6 , further comprising a buffer spring, and two ends of the buffer spring are respectively connected with the height measuring head and the slide bar. 9. subway contact rail measuring ruler according to claim 1, is characterized in that: also comprise gauge measuring mechanism, described gauge measuring mechanism comprises the gauge measuring slide block that can slide along described ruler body, and is installed on The gauge scale on the ruler body is provided with a reference scale on the gauge measuring slider, and an offset scale is provided on the gauge scale. 10. The metro contact rail measuring ruler according to claim 9, characterized in that a second positioning bearing is arranged on the gauge measuring slider.