Novel shield measuring instrument fixing device

Abstract

The utility model provides a novel shield measuring instrument fixing device which is integrally mounted at a measuring position of a measuring instrument, and a plurality of upper expansion screw holes and a plurality of lower expansion screw holes are formed in a shield segment according to the measuring position of the measuring instrument. The upper adjusting plate and the lower adjusting plate are respectively fastened on the shield segment through expansion bolts at the upper expansion screw holes and the lower expansion screw holes; the forced centering tray is fastened on the upper adjusting plate and horizontally overhangs, a preformed hole is formed in the end of the side, facing the upper adjusting plate, of the forced centering tray, a centering bolt is arranged at the upper end of the free end and supported by a pair of folding hinges connected between the free end and the lower adjusting plate, and the included angle between the forced centering tray and the horizontal plane can be adjusted through the folding hinges. And a measuring instrument with a central screw hole at the bottom is placed at the upper end of the forced centering tray and is sleeved on the centering bolt through the central screw hole in a matched and threaded manner. The device is convenient and fast to disassemble and assemble, flexible and convenient to operate, and capable of effectively improving the measurement efficiency and providing guarantee for the measurement precision.

Description

Technical Field

[0001] The utility model relates to a fixing device for a new shield measuring instrument. Background Art

[0002] Due to the requirements of the tunnel alignment, elevation and track-laying accuracy, the shield tunnel measurement work in subway construction is particularly important. To ensure accurate measurement, it is necessary to keep the measuring instrument stable. The traditional method is to equip a triangular bracket for stably mounting the measuring instrument. However, due to the complex construction area environment and many external factors, and due to the limitations of its own structure, the triangular bracket is inconvenient to disassemble, assemble and adjust during the auxiliary measurement work, making it difficult to improve the measurement speed, and thus making the continuous construction difficult. In addition, since the three legs of the triangular bracket are difficult to open to the specified angle in the shield tunnel, there are also problems such as limited setting positions or difficult height adjustment, resulting in limited use. Summary of the Utility Model

[0003] To solve the above technical problems, the utility model proposes a fixing device for a new shield measuring instrument, which is used for stably supporting the measuring instrument during continuous measurement operations in the construction area of the subway shield tunnel, is simple and fast to disassemble and assemble, flexible and convenient to operate, can effectively improve the measurement efficiency, and provides guarantee for the measurement accuracy.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A fixing device for a new shield measuring instrument, its structural features are:

[0006] The whole device is installed at the measuring position of the measuring instrument. According to the measuring position of the measuring instrument, multiple upper expansion screw holes and multiple lower expansion screw holes are opened on the shield segment at the place. The upper adjusting plate is fastened to the shield segment by expansion bolts at each upper expansion screw hole, and the lower adjusting plate is fastened to the shield segment by expansion bolts at each lower expansion screw hole, with an upper and lower spaced distribution. Expansion bolt holes are respectively reserved on the plate body corresponding to each expansion bolt;

[0007] A pair of connecting plates are arranged at the bottom of the forced centering tray, and are respectively fastened to a pair of upper ear plates carried by the upper adjusting plate through connecting bolts. The tray body horizontally overhangs, the upper end of the plate surface is flat, the side facing the upper adjusting plate is the rear side, a vertically penetrating reserved hole is opened at the rear end of the rear side, the front side is the free end, and a centering bolt is arranged at the upper end of the free end, and is supported by a pair of folding hinges connected between the lower end of the free end and the lower adjusting plate, and the included angle with the horizontal plane is adjustable through the folding hinges;

[0008] The measuring instrument with a central screw hole at the bottom is placed on the upper end of the forced centering tray, and is thread sleeved on the centering bolt in a matching manner through the central screw hole, so as to realize the positioning of the measuring instrument on the forced centering tray.

[0009] The structural features of this application also lie in that:

[0010] A pair of folding hinges are symmetrically arranged on the left and right and connected between the forced centering tray and the lower adjusting plate; the folding hinge successively includes a first connecting rod, a second connecting rod and a third connecting rod from top to bottom. The upper end of the first connecting rod is fastened to the forced centering tray through an upper connecting bolt, the lower end is hinged to the upper end of the second connecting rod, the lower end of the second connecting rod is hinged to the upper end of the third connecting rod, and the lower end of the third connecting rod is fastened to the lower ear plate carried by the lower adjusting plate through a lower connecting bolt. Each hinge axis is parallel and horizontally arranged along the left-right direction.

[0011] The bottom end of the forced centering tray in the horizontal posture is supported on the top end of the upper ear plate.

[0012] The measuring instrument is a total station or a prism.

[0013] Compared with the prior art, the beneficial effects of the present utility model are embodied in:

[0014] 1. It is convenient and fast to disassemble and assemble and can be reused;

[0015] The whole device is fastened to the shield segment through the upper adjusting plate and the lower adjusting plate by expansion bolts. Only by reserving expansion screw holes on the shield segment can the device be temporarily fixed with the help of the shield segment. The disassembly and assembly are less difficult, faster, the measuring efficiency is high, and it can better match the construction rhythm;

[0016] 2. It is easy to adjust, has good adjustability and is less restricted by the construction environment;

[0017] Since the whole device is suspended on the shield segment, compared with the traditional method of erecting a measuring instrument in the shield tunnel using a triangular bracket, the complex environment in the shield tunnel construction area is eliminated from interfering with the adjustment operation. This device is less limited by space within its own adjustable range, making the adjustment of the height and tilt angle of the measuring instrument not only simpler but also easier to perform. Description of the Drawings

[0018] Figure 1 is the schematic side view structure of the present utility model;

[0019] Figure 2 is the schematic top view structure of the present utility model;

[0020] Figure 3 is the schematic front view structure of the present utility model.

[0021] In the figure, 1 is the upper adjusting plate; 2 is the upper ear plate; 3 is the connecting bolt; 4 is the lower adjusting plate; 5 is the lower ear plate; 6 is the expansion bolt hole; 7 is the forced centering tray; 8 is the reserved hole; 9 is the centering bolt; 10 is the first connecting rod; 11 is the second connecting rod; 12 is the third connecting rod; 13 is the upper connecting bolt; 14 is the lower connecting bolt; 15 is the connecting plate. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 3 , the overall installation of the fixing device for the new shield measuring instrument in this embodiment is at the measuring position of the measuring instrument. According to the measuring position of the measuring instrument, multiple upper expansion screw holes and multiple lower expansion screw holes are opened on the shield segment at the location. The upper adjusting plate 1 and the lower adjusting plate 4 are respectively fastened to the shield segment through expansion bolts at each upper expansion screw hole and each lower expansion screw hole, with an upper and lower spaced distribution. Expansion bolt holes 6 are respectively reserved on the plate body corresponding to each expansion bolt;

[0024] A pair of connecting plates 15 are provided at the bottom of the forced centering tray 7, and are respectively fastened to a pair of upper ear plates 2 carried by the upper adjusting plate 1 through connecting bolts 3. The tray body horizontally overhangs, the upper end of the plate surface is flat, the side facing the upper adjusting plate 1 is the rear side, and a vertically penetrating reserved hole 8 is opened at the rear end for the routing of the matching lines of the measuring instrument. The front side is the free end, and a centering bolt 9 is provided at the upper end of the free end, and is supported by a pair of folding hinges connected between the lower end of the free end and the lower adjusting plate 4, and the included angle with the horizontal plane is adjustable through the folding hinges;

[0025] The measuring instrument with a central screw hole at the bottom is placed on the upper end of the forced centering tray 7 and is threadedly sleeved on the centering bolt 9 in a matching manner through the central screw hole, so as to realize the positioning of the measuring instrument on the forced centering tray 7.

[0026] The corresponding structural settings of this device also include:

[0027] A pair of folding hinges are symmetrically arranged on the left and right and connected between the forced centering tray 7 and the lower adjustment plate 4; the folding hinges include a first connecting rod 10, a second connecting rod 12 and a third connecting rod 12 from top to bottom, the upper end of the first connecting rod 10 is fastened to the connecting plate 15 at the bottom of the forced centering tray 7 by an upper connecting bolt 13, the lower end is hinged to the upper end of the second connecting rod 12, the lower end of the second connecting rod 12 is hinged to the upper end of the third connecting rod 12, the lower end of the third connecting rod 12 is fastened to the lower ear plate 5 brought by the lower adjustment plate 4 by a lower connecting bolt 14, and the hinge axes are parallel and horizontally arranged along the left and right directions.

[0028] The bottom end of the forced centering tray 7 in a horizontal posture is supported on the top end of the upper ear plate 2.

[0029] The measuring instrument is a total station or a prism.

[0030] In the specific implementation, the following methods can be used:

[0031] Step 1: After determining the measurement position, multiple upper expansion screw holes and multiple lower expansion screw holes are correspondingly opened on the shield segment at the location;

[0032] Step 2: Use expansion bolts to install the upper adjustment plate and the lower adjustment plate on the shield segment respectively;

[0033] Step 3: Connect the forced centering tray to the upper adjustment plate through connecting bolts. The connecting bolts are connected between the connecting plate and the upper ear plate on each side, and are not fully tightened yet;

[0034] Step 4, assemble a pair of folding hinges: in the folding hinges on each side, the first connecting rod and the second connecting rod, and the second connecting rod and the third connecting rod are respectively hinged in advance, and then the first connecting rod is connected to the forced centering tray through the upper connecting bolt, and the third connecting rod is connected to the lower adjustment plate through the lower connecting bolt. The lower connecting bolt is fully tightened first, and the upper connecting bolt is not fully tightened for the time being;

[0035] Step 5. According to the measurement requirements, turn the forced centering tray upward or downward around the central axis of the connecting bolt in step 3, adjust its tilt angle, and fully tighten the connecting bolt and the upper connecting bolt after adjustment, so that the device is completely fixed;

[0036] Step 6: Place the measuring instrument with the center screw hole at the bottom on the upper end of the forced centering tray, and fit the center screw hole to the centering bolt to achieve the positioning of the measuring instrument on the forced centering tray, and then officially start the measurement operation;

[0037] Step 7: After the measurement is completed, remove the device and store it.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fixing device for a new shield measuring instrument, characterized in that: The whole device is installed at the measuring position of the measuring instrument. According to the measuring position of the measuring instrument, multiple upper expansion screw holes and multiple lower expansion screw holes are opened on the shield segment at the location. The upper adjusting plate is fastened to the shield segment by expansion bolts at each upper expansion screw hole, and the lower adjusting plate is fastened to the shield segment by expansion bolts at each lower expansion screw hole. They are distributed at intervals, one above the other, and expansion bolt holes are respectively reserved on the plate body corresponding to each expansion bolt; A pair of connecting plates are provided at the bottom of the forced centering tray. The pair of connecting plates are respectively fastened to a pair of upper ear plates carried by the upper adjusting plate through connecting bolts. The tray body extends horizontally, the upper end of the plate surface is flat, the side facing the upper adjusting plate is the rear side, and a vertically penetrating reserved hole is opened at the end of the rear side. The front side is the free end, and a centering bolt is provided at the upper end of the free end and is supported by a pair of folding hinges connected between the lower end of the free end and the lower adjusting plate. The angle with the horizontal plane is adjustable through the folding hinges; The measuring instrument with a central screw hole at the bottom is placed on the upper end of the forced centering tray and is threadedly sleeved on the centering bolt in a matching manner through the central screw hole to realize the positioning of the measuring instrument on the forced centering tray.

2. The fixing device for the new shield measuring instrument according to claim 1, characterized in that: A pair of folding hinges are symmetrically arranged on the left and right and are connected between the forced centering tray and the lower adjusting plate; the folding hinge sequentially includes a first connecting rod, a second connecting rod and a third connecting rod from top to bottom. The upper end of the first connecting rod is fastened to the forced centering tray through an upper connecting bolt, the lower end is hinged to the upper end of the second connecting rod, the lower end of the second connecting rod is hinged to the upper end of the third connecting rod, and the lower end of the third connecting rod is fastened to the lower ear plate carried by the lower adjusting plate through a lower connecting bolt. Each hinge shaft is parallel and is horizontally arranged along the left-right direction.

3. The fixing device for the new shield measuring instrument according to claim 1, characterized in that: The bottom end of the forced centering tray in the horizontal posture is supported on the top end of the upper ear plate.

4. The fixing device for the new shield measuring instrument according to claim 1, characterized in that: The measuring instrument is a total station or a prism.

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