CN211040393U - Hanger device for measuring instrument for underground excavation tunnel - Google Patents

Abstract

This utility model relates to a support device for surveying instruments used in tunnel excavation, comprising a rectangular load-bearing platform for supporting the surveying instrument. A leg is positioned diagonally on each side of the load-bearing platform, with one end of each leg fixed to the tunnel ceiling and the other end ball-jointed to the upper surface of the load-bearing platform. An adjustment component for adjusting the flatness of the load-bearing platform is located at each of the other opposite corners. The advantages of this utility model are that it reduces the possibility of damage to the surveying station during construction, thereby reducing the workload of workers requiring re-measurement and improving the efficiency of the construction process.

Description

A hanger device for measuring instruments in underground excavation tunnels

technical field

The utility model relates to the technical field of construction measurement of undercut tunnels, in particular to a hanger device for measuring instruments for undercut tunnels.

Background technique

With the vigorous promotion of infrastructure construction in my country, power pipelines, municipal pipelines and other projects are gradually transferred from the ground to the underground, and the underground excavation construction operation is gradually popularized and adopted because of its small interference to ground traffic and relatively mature technology.

In the process of tunnel excavation, the staff often sets up a bottom plate at the bottom of the tunnel. The staff needs to set up a measuring station at the corresponding position of the bottom plate. The staff first erects a tripod on the bottom plate, and then sets up a measuring instrument on the tripod.

Due to the relatively limited space of the measurement point in the underground tunnel, the measurement operation is greatly affected by other types of work, and it is easy to cause damage to the measurement site. greatly reduces the accuracy of the measurement.

Utility model content

Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide a hanger device for measuring instruments in a tunnel excavation, which has the advantage of reducing the possibility of damage to the measuring site during construction, thereby reducing work The labor burden of personnel retesting is improved, and the work efficiency of the construction process is improved.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

The utility model relates to a hanger device for measuring instruments in underground tunnels; it comprises a rectangular load-bearing platform used for supporting the measuring instruments, a leg is arranged on each diagonal corner of the load-bearing platform, one end of the leg is fixedly connected with the top of the tunnel, and the other end is It is spherically articulated with the upper surface of the load-bearing platform, and an adjustment component for adjusting the flatness of the load-bearing platform is arranged at the other opposite corner of the load-bearing platform.

By adopting the above technical solution, the measuring instrument is arranged on the top of the tunnel, so as to reduce the possibility of damage to the measuring site during the construction process, thereby reducing the labor burden of the staff for re-measurement and improving the work efficiency of the construction process.

In a preferred example of the present invention, it can be further configured as follows: the adjustment component includes a jack screw nut arranged on another diagonal line of the load-bearing platform and a jack screw threadedly connected with the jack screw nut, and a jack screw is provided on the load-bearing platform Through hole, the jack screw nut is fixed in the through hole.

By adopting the above technical solution, when a pair of outriggers are fixed on the top of the tunnel with the busbar of the tunnel as the symmetrical axis, there is a slight gap between the two sides of the tunnel separated by the busbar due to the construction process. , drive the top screw nut matched with the top screw to move slightly along the length direction of the top screw, so as to adjust the flatness of the load-bearing platform, thereby improving the measurement accuracy.

In a preferred example of the present invention, it can be further configured as follows: the top wire is fixedly connected with a handle which is convenient for driving the top wire to rotate.

By adopting the above technical solution, the arrangement of the handle is convenient for the staff to drive the rotation of the top wire, so as to adjust the flatness of the load-bearing platform.

In a preferred example of the present invention, the load-bearing platform can be further configured as follows: the load-bearing platform includes a rectangular frame body and a base arranged in the rectangular frame body for supporting the measuring instrument, and several connecting rods are connected between the base and the frame body. For connection, through holes are opened on the frame.

By adopting the above technical solution, the weight of the load-bearing platform is reduced, thereby facilitating the transport of the load-bearing platform by the staff.

In a preferred example of the present invention, it can be further configured that: the connecting rod is set as an angle steel.

By adopting the above technical solution, the connection of the angle steel is strong, and the connection between the frame body and the base can be strengthened.

In a preferred example of the present invention, it can be further configured as follows: one end of the two outriggers facing away from the frame body is fixedly connected with a backing plate whose end surface area is larger than that of the outrigger leg, and a plurality of expansion bolts are provided on the backing plate through the connecting hole.

By adopting the above technical solution, the staff can pass the expansion bolt through the connection hole and fixedly connect it with the top of the tunnel, which has a simple structure and is convenient for the staff to disassemble the installation foot.

In a preferred example of the present invention, it can be further configured that: the top ball of the jacking wire is hinged with a force-bearing sheet whose end surface area is larger than that of the jacking wire end face.

By adopting the above technical solution, the setting of the force-bearing sheet increases the force-bearing area between the top wire and the top of the tunnel.

In a preferred example of the present invention, it can be further configured that the measuring instrument is fixedly connected to the base through bolts.

By adopting the above technical solution, it is convenient for the staff to install and disassemble the measuring instrument.

To sum up, the present utility model at least includes the following beneficial technical effects:

1. By setting the measurement site at the top of the tunnel, the possibility of damage to the measurement site due to construction at the bottom of the tunnel is reduced, thereby reducing the labor burden of the staff for re-measurement and improving the work efficiency of the construction process;

2. By setting the adjustment components, it is convenient for the staff to adjust the flatness of the load-bearing platform according to the actual situation, thereby improving the measurement accuracy.

Description of drawings

Fig. 1 is the structural representation that the utility model is installed on the top of the tunnel;

Fig. 2 is the structural representation of the present utility model;

FIG. 3 is an enlarged schematic view of part A in FIG. 2 .

In the figure, 1, load-bearing platform; 11, frame body; 111, through hole; 12, base; 121, reserved threaded hole; 122, bolt; 13, connecting rod; 2, measuring instrument; 3, outrigger; 31, Backing plate; 32, connecting hole; 33, expansion bolt; 4, adjustment component; 41, jack screw nut; 42, jack screw; 43, handle; 44, stress piece.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the utility model discloses a hanger device for a tunnel excavation measuring instrument, comprising a rectangular load-bearing platform 1 for supporting the measuring instrument 2. Each is provided with a leg 3 , one end of the leg 3 is fixedly connected with the top of the tunnel, and the other end is spherically hinged with the upper surface of the load-bearing platform 1 . An adjustment component 4 for adjusting the flatness of the load-bearing platform 1 is disposed at the other diagonal corner of the load-bearing platform 1 . The load-bearing platform 1 includes a frame body 11 and a base 12 disposed in the frame body 11 for supporting the measuring instrument 2 . The base 12 and the frame body 11 are connected by a plurality of connecting rods 13 . Among them, the frame body 11 is made of four angle steels welded to each other and is rectangular, the base 12 is in the shape of a disc, the connecting rod 13 is set as an angle steel, the outer circumference of the base 12 is provided with six angle steels, one end of the six angle steels is welded with the base 12 and the other end is connected with the frame The body 11 is welded so that the base 12 and the frame body 11 are firmly connected. The load-bearing platform 1 is arranged into a frame body 11 and a base 12 , thereby reducing the weight of the load-bearing platform 1 and facilitating the handling of the load-bearing platform 1 by the staff.

As shown in FIG. 2 and FIG. 3 , a backing plate 31 is fixedly connected to one end of the pair of legs 3 away from the frame body 11 , and the end surface area of the backing plate 31 is larger than that of the supporting legs 3 , and the four corners of the end surface of the backing plate 3 are provided with There is a connecting hole 32, the connecting hole 32 penetrates the backing plate 31, and the backing plate 31 is provided with an expansion bolt 33 which is connected to the top of the tunnel through the connecting hole 32, and the leg 3 is fixed on the top of the tunnel by the expansion bolt 33, and the operation Simple and convenient for the staff to install and remove the hanger device, the setting of the backing plate 31 increases the contact area with the top of the tunnel, and the setting of the four expansion bolts 33 strengthens the connection between the hanger device and the top of the tunnel.

As shown in FIG. 2 and FIG. 3 , a through hole 111 is provided at each diagonal corner of the frame body 11 , and the adjustment assembly 4 includes a jack screw nut 41 arranged on the other diagonal line of the frame body 11 and is threadedly matched with the jack screw nut 41 The connected jack screw 42, the jack screw nut 41 is welded in the through hole 111, and the staff drives the jack screw 42 threadedly matched with the jack screw 42 to move along the length direction of the jack screw 42 by driving the rotation of the jack screw 42, thereby driving the jack screw 42. The frame body 11 fixed with the jack screw nut 41 moves up and down, and by adjusting the height of the jack screw 42, the flatness of the frame body 11 is adjusted, and the flatness of the measuring instrument 2 placed on the frame body 11 is improved, which is convenient to improve the accuracy of measurement Spend. The top of the top wire 42 is provided with a force-bearing sheet 44, the end face area of the force-bearing sheet 44 is larger than the end face area of the top wire 42, and the force-bearing sheet 44 is spherically hinged with the top wire 42. When the force-bearing sheet is in close contact with the top of the tunnel, the The setting of the force piece 44 increases the contact area with the top of the tunnel.

As shown in FIG. 2 and FIG. 3 , the measuring instrument 2 and the base 12 are connected by bolts 122 , and the center of the base 12 is provided with a reserved threaded hole 121 matched with the measuring instrument 2 . 2 is placed at the corresponding position on the upper surface of the base 12, by passing the bolt 122 from the lower surface of the base 12 through the reserved threaded hole 121 and threadedly connected with the measuring instrument 2, the structure is simple, and it is convenient for the staff to disassemble and install the measuring instrument 2.

The implementation principle of this embodiment is as follows: the worker fixes a pair of legs 3 on the top of the tunnel by passing the expansion bolts 33 through the connecting holes 32 on the backing plate 31, and then rotates the handle 43 to drive the rotation of the top wire, so that the The top screw nut 41 matched with the top screw moves along the length direction of the top screw 42, thereby adjusting the flatness of the frame body 11, thereby improving the flatness of the measuring instrument 2 placed on the base 12, and improving the accuracy of the measurement. The top of the tunnel reduces the possibility of damage to the measurement site caused by the construction at the bottom of the tunnel, thereby reducing the labor burden of the staff for re-measurement and improving the work efficiency of the construction process.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a gallows device for undercut tunnel measuring instrument which characterized in that: the device comprises a rectangular bearing platform (1) for bearing a measuring instrument (2), wherein a supporting leg (3) is arranged on each diagonal of the bearing platform (1), one end of each supporting leg (3) is fixedly connected with the top of a tunnel, the other end of each supporting leg is hinged with the upper surface of the bearing platform (1) in a spherical mode, and an adjusting component (4) for adjusting the flatness of the bearing platform (1) is arranged on each other diagonal of the bearing platform (1).

2. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 1, wherein: adjusting part (4) including set up jackscrew nut (41) on another diagonal of bearing platform (1) and jackscrew (42) of being connected with jackscrew nut (41) screw-thread fit, seted up a through-hole (111) on bearing platform (1), jackscrew nut (41) are fixed in through-hole (111).

3. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 2, wherein: and a handle (43) which is convenient for driving the jackscrew (42) to rotate is fixedly connected to the jackscrew (42).

4. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 3, wherein: the bearing platform (1) comprises a rectangular frame body (11) and a base (12) arranged in the frame body (11) and used for bearing the measuring instrument (2), the base (12) is connected with the frame body (11) through a plurality of connecting rods (13), and a through hole (111) is formed in the frame body (11).

5. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 4, wherein: the connecting rod (13) is set to be angle steel.

6. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 4, wherein: two one end rigid coupling that landing leg (3) deviate from framework (11) has terminal surface area to be greater than backing plate (31) of landing leg (3) terminal surface area, has seted up connecting hole (32) that a plurality of confession expansion bolts (33) passed on backing plate (31).

7. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 2, wherein: the top end of the jackscrew (42) is in spherical hinge joint with a stress sheet (44) with the end surface area larger than that of the jackscrew (42).

8. A hanger apparatus for an underground excavated tunnel surveying instrument according to claim 4, wherein: the measuring instrument (2) is fixedly connected with the base (12) through a bolt (122).

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