CN204461395U - A kind of overhead contact built-in conduit gap measuring device - Google Patents

Abstract

The utility model discloses a measuring device for the distance between pre-buried channels of catenary, which is used for accurately measuring the distance of pre-buried channels in the process of civil construction of tunnel subway engineering. It mainly consists of a measuring scale (1), two Composed of crosshair lasers (2 and 3), two laser fixing frames with scaled verniers (4 and 5), horizontal leveling balls (6), vertical leveling balls (7), trays (8), and tripod brackets (9); Among them, the measuring scale (1) is connected to the tripod bracket (9) through the tray (8), and the two crosshair lasers (2 and 3) vertically align the crosshair lasers through the laser fixing brackets (4 and 5) with scale verniers. Fixed on the measurement scale (1) and can slide longitudinally along the measurement scale; the front of the measurement scale (1) is provided with a horizontal level ball (6), and its side is provided with a longitudinal level ball (7). The utility model does not need to build a ladder frame The personnel can accurately complete the measurement when they go to the top, the manufacturing cost is low, the safety is good, and the work efficiency is high. It is especially suitable for use on the construction site of tunnel subway projects.

Description

A Measuring Device for Pre-embedded Groove Spacing in Catenary

technical field

The utility model relates to building construction measuring equipment, in particular to a measuring device for the distance between pre-buried channels of contact nets.

Background technique

At present, in the civil construction process of electrified railway tunnels and subway projects, the channels are pre-buried in advance, and then the catenary suspension columns are installed on the two channels, and then the catenary laying construction is carried out. The width of the catenary suspension column chassis and the position of the connection point with the channel are fixed, so the distance between the two pre-buried channels must meet the standard. It is necessary to measure the distance between the two channels before installing the catenary suspension column. The height of the pre-buried channel is nearly 10 meters from the ground. At present, the method of setting up the ladder frame to the top with a ruler is used on site, which is not safe and efficient. At present, there are few instruments that can achieve similar measurement purposes, the price is expensive, the structure is complex, the environmental requirements are high, and it is not required on site.

Utility model content

The purpose of this utility model is to provide a catenary pre-buried channel spacing measuring device, which has the advantages of non-contact measurement, simple structure and convenient use.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows:

A catenary pre-buried channel spacing measuring device is used to accurately measure the spacing of the pre-embedded channels in the civil construction process of tunnel subway engineering. It is mainly composed of measuring scale 1, two crosshair lasers (2 and 3), two laser fixing frames with scale vernier (4 and 5), horizontal level ball 6, vertical level ball 7, tray 8, and tripod bracket 9 Wherein, measuring scale 1 is connected on the tripod support 9 by tray 8, and two crosshair lasers (2 and 3) vertically fix the crosshair laser on the measuring scale by laser fixtures (4 and 5) with scale vernier 1 and can slide longitudinally along the measuring scale; the front of the measuring scale is provided with a horizontal level ball 6, and its side is provided with a longitudinal level ball 7.

In this way, the laser fixing frame 4 with scale vernier vertically fixes the crosshair laser 2 on the measuring scale and can slide left and right along the measuring scale; the laser fixing bracket 5 with scale vernier vertically fixes the crosshair laser 3 on the measuring scale Up and can slide left and right along the measuring scale; after fixing, one cross laser line emitted by cross laser 2 is parallel to the measuring scale, and the other cross laser line is perpendicular to the measuring scale; after fixing, the cross laser line emitted by cross laser 3 One is parallel to the measuring scale, and the other cross laser line is perpendicular to the measuring scale; the cross laser line emitted by the cross laser 2 and the cross laser 3 to the top of the tunnel coincides with the two laser lines parallel to the measuring scale 1, and the other The two laser lines are parallel, the overlapping laser line is perpendicular to the two parallel laser lines, and the vertical laser line distance between the two parallel laser lines is determined by the measuring scale to realize the measurement of the distance between the two pre-embedded channels.

Compared with the prior art, the utility model can accurately complete the measurement without the need for the personnel who build the ladder frame to go to the top, and has low manufacturing cost, good safety and high work efficiency. It is especially suitable for use on the construction site of tunnel subway projects.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model catenary pre-buried channel spacing measuring device.

FIG. 2 is a cross-sectional view along line A-A of FIG. 1 .

Detailed ways

As shown in Figures 1 and 2, the utility model catenary pre-buried channel spacing measuring device is mainly composed of a measuring scale 1, a crosshair laser 2, a crosshair laser 3, a laser fixture (4 and 5) with a scale vernier, Horizontal horizontal ball 6, vertical horizontal ball 7, pallet 8, tripod support 9 are formed. The laser fixing frame 4 with scale vernier vertically fixes the crosshair laser 2 on the measuring scale 1 and can slide left and right along the measuring scale 1; the laser fixing frame 5 with scale vernier vertically fixes the crosshair laser 3 on the measuring scale Ruler 1 and can slide left and right along the measuring scale; after fixing, one cross laser line emitted by cross laser 2 is parallel to the measuring scale, and the other cross laser line is perpendicular to the measuring scale; after fixing, the cross laser line emitted by cross laser 3 One laser line is parallel to the measuring scale, and the other cross laser line is perpendicular to the measuring scale; the cross laser line 2 and the cross line laser 3 emit to the cross laser line on the top of the tunnel, and the two laser lines parallel to the measuring scale coincide, The other two laser lines are parallel, the overlapping laser lines are perpendicular to the two parallel laser lines, and the vertical laser line distance between the two parallel laser lines is determined by the scale bar 102 of the measuring scale, so as to realize the measurement of two pre-embedded grooves (201 and 201 ). 202) Spacing.

The measuring scale 1 is made of aluminum alloy, marked with a scale of 1000mm. The inlaid nut at the bottom middle position is connected with the bolt on the pallet 8 . The crosshair laser is a stereotyped product of the laser manufacturer, with a low price and meets the needs of the site. The laser fixing frame (4 and 5) with the scale vernier is a metal product, which is processed and produced according to the specifications of the reticle laser and the measuring scale to ensure the stable fixation of the reticle laser. It can be seen from FIG. 2 that the measuring scale 1 has a groove 101 that facilitates the longitudinal sliding of the laser fixing frame with the scale vernier. The center of the pallet 8 is connected with the nut on the measuring scale 1 by conventional bolts. The tripod support 9 is an aluminum alloy product, which plays a role in supporting and adjusting the measuring scale 1. Horizontal level ball 6, vertical level ball 7 select suitable cylindrical level ball according to measurement scale specification and be fixed on the measurement scale, horizontally, vertically respectively install one.

When in use, first place the tripod support 9 on the ground directly below the two pre-buried channels in the tunnel where the spacing needs to be measured, install the measuring scale on the tray 8, adjust the tripod support 9 to determine the level of the measuring scale through the horizontal level ball position, turn on the switches of crosshair laser 2 and crosshair laser 3, rotate horizontally to adjust measuring scale 1, and adjust the positions of crosshair laser 2 and crosshair laser 3 vertically along the measuring scale to make the crosshair lasers (2 and 3) The two parallel laser lines projected onto the pre-buried channel at the top of the tunnel coincide with the measured channel (201 and 202), according to the data on the measurement scale bar 102 of the vernier pointer (401 and 501) of the laser fixture with a scale vernier , to calculate the distance between the two pointers, that is, to measure the distance between the two pre-buried channels at the top of the tunnel, and to determine whether the two pre-buried channels at the top of the tunnel are parallel.

Claims (2)

1. A catenary pre-buried channel spacing measuring device is used to accurately measure the spacing of the pre-embedded channels in the civil construction process of the tunnel subway project. It is characterized in that it is mainly composed of a measuring scale (1), two Composed of a crosshair laser (2 and 3), two laser fixing frames with scale vernier (4 and 5), a horizontal level ball (6), a vertical level ball (7), a tray (8), and a tripod stand (9) Wherein, the measuring scale (1) is connected on the tripod support (9) through the tray (8), and the two crosshair lasers (2 and 3) are connected to the crosshair laser by the laser fixture (4 and 5) with scale vernier. It is vertically fixed on the measuring scale (1) and can slide longitudinally along the measuring scale; the front of the measuring scale (1) is provided with a horizontal horizontal ball (6), and its side is provided with a longitudinal horizontal ball (7). 2. a kind of catenary pre-buried channel spacing measuring device as claimed in claim 1, is characterized in that, described measuring scale (1) has the groove that is convenient to the laser device holder with scale vernier to slide along its longitudinal direction (101).