Forced centering measurement control point device for tunnel side wall

Abstract

The utility model discloses a tunnel side wall forced centering measurement control point device which comprises an installation bottom plate vertically fixed to a tunnel wall body, a storage plate vertically and fixedly connected to the bottom of the installation bottom plate, a centering supporting plate with the end hinged to the installation bottom plate and a supporting rod with the end hinged to the bottom end of the storage plate. The cross section of the centering supporting plate is in a U shape, the end of the supporting rod is located on the inner side of the centering supporting plate, a fixing hole matched with the movable end of the supporting rod is formed in the middle of the centering supporting plate, and an installation structure is arranged at the movable end of the centering supporting plate. The accuracy of measured data is improved, and the scratch of the instrument by vehicles, equipment and the like is reduced due to the folding design; and in addition, the structure is simple, the size is small, follow-up overall disassembly, storage and carrying of the device are facilitated, and the working efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of surveying engineering, in particular to a tunnel side wall forced centering measurement control point device. Background Art

[0002] During the construction process, surveying is a vital task that helps ensure construction quality and accuracy and provides reference data for project control and management. Survey control points refer to a series of points that are set up within the area to be measured before surveying to complete the surveying of the entire area.

[0003] When measuring the control wire network in a traditional tunnel, the traditional method is to use a total station and a prism to set up stations and transfer points on the rivets installed on the bottom plate or side wall. This method requires setting up stations every time and the measurement control points are easily damaged. In addition, the accuracy of coordinate transfer during the wire network measurement cannot be guaranteed. The accuracy of station setting and coordinate transfer will directly affect the error size of the measurement results. Summary of the invention

[0004] The purpose of the utility model is to provide a tunnel side wall forced centering measurement control point device in view of the above-mentioned problem. By placing a forced centering support plate on the tunnel side wall, the problem of total station installation and coordinate transfer error is well solved, the installation process is simplified, the accuracy of measurement data is improved, and work efficiency is improved. Moreover, its structure is simple and easy to install, and the protection of the control device is also enhanced through the design of foldable and reflective sheets.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a tunnel side wall forced centering measurement control point device, including a mounting base plate vertically fixed on the tunnel wall, a storage plate vertically fixedly connected to the bottom of the mounting base plate, a centering support plate with its end hinged to the mounting base plate and a support rod with its end hinged to the bottom of the storage plate, the cross-section of the centering support plate is U-shaped, the end of the support rod is located on the inner side of the centering support plate, a fixing hole adapted to the movable end of the support rod is provided in the middle of the centering support plate, and a mounting structure is provided at the movable end of the centering support plate.

[0006] Preferably, a pair of fixing nails are provided at both ends of the installation base plate, and the tunnel wall is connected through the fixing nails. The bottom end of the storage plate is provided with a fixing plate and the fixing nails are installed through the fixing plate.

[0007] Preferably, the cross-section of the storage plate is U-shaped, the bottom end of the support rod is located inside the storage plate, and the support rod is connected to the storage plate via a rotating shaft.

[0008] Preferably, a slot is axially provided at the connecting end of the centering support plate and the mounting base plate, a protrusion is obliquely fixedly provided at the top end of the support rod, the protrusion is adapted to the slot, and the fixing hole is connected to the tail end of the slot.

[0009] Preferably, a bubble level is fixedly provided parallel to the side wall of the centering support plate, and a reflective sheet is attached to the outer side wall of the centering support plate.

[0010] Preferably, a magnetic adsorption strip is provided on the top of the mounting base plate.

[0011] 1. The utility model provides a tunnel side wall forced centering measurement control point device. By placing a forced centering support plate on the tunnel side wall, the problem of total station setting error and coordinate transfer error can be well solved, the setting process is simplified, the accuracy of measurement data is improved, and work efficiency is improved; and its simple structure and small size also facilitate subsequent overall disassembly, storage and transportation, further improving work efficiency.

[0012] 2. By setting the bubble level, the level of the centering plate can be further ensured, ensuring the accuracy of the total station installation.

[0013] 3. By setting up foldable and reflective sheets, the occupation of tunnel space can be reduced, and possible collisions between instruments and equipment in the tunnel environment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall development of the utility model.

[0016] Figure 2 It is an overall schematic diagram of the retraction and extension of the utility model.

[0017] Figure 3 It is a schematic side view of the utility model when it is unfolded.

[0018] Figure 4 It is a front view schematic diagram of the expansion of the utility model.

[0019] Figure 5 It is a schematic cross-sectional view of the utility model.

[0020] In the figure: 1. Install the base plate; 2. Support rod; 3. Centering plate; 4. Fixing nail; 5. Rotating rod; 101. Storage plate; 102. Fixing plate; 103. Adsorption strip; 201. Rotating axis; 202. Boss; 301. Mounting screw; 302. Bubble level; 303. Reflective sheet; 304. Slot; 305. Fixing hole. DETAILED DESCRIPTION

[0021] like Figure 1-5 The utility model provides a tunnel side wall forced centering measurement control point device, comprising a mounting base plate 1 vertically fixed on the tunnel wall, a receiving plate 101 vertically fixedly connected to the bottom of the mounting base plate 1, a centering support plate 3 with an end hinged on the mounting base plate 1, and a support rod 2 with an end hinged on the bottom of the receiving plate 101, the cross-section of the centering support plate 3 is U-shaped, the end of the support rod 2 is located on the inner side of the centering support plate 3, the middle of the centering support plate 3 is provided with a fixing hole 305 adapted to the movable end of the support rod 2, and the movable end of the centering support plate 3 is provided with a mounting structure.

[0022] By fixing the installation base plate 1 on the side wall of the tunnel, the receiving plate 101 is welded to the bottom of the installation base plate 1, and the bottom end of the support rod 2 is rotated and installed through the receiving plate 101, the centering support plate 3 is directly hinged on the installation base plate 1, and the movable end of the centering support plate 3 is supported by the support rod 2, and the movable end of the support rod 2 is squeezed by the screw passing through the fixing hole 305, and the support rod 2 is rotationally limited, so that the centering support plate 3 is in a horizontal state, and then the total station is installed through the installation structure. The installation structure is a mounting screw 301 threadedly connected to the movable end of the centering support plate 3. After the measurement construction is completed, the screw in the fixing hole 305 is taken out so that the rotation of the support rod 2 is not restricted, and then the support rod 2 is rotated to a vertically upward state, and the centering support plate 3 is rotated to a vertically downward state, so as to realize the storage of the forced centering measurement device and reduce the occupation of the tunnel space.

[0023] like Figure 1 As shown. A pair of fixing nails 4 are provided at both ends of the installation base plate 1, and the tunnel wall is connected through the fixing nails 4. A fixing plate 102 is provided at the bottom end of the storage plate 101, and the fixing nails 4 are installed through the fixing plate 102. The installation base plate 1 is fixed to the tunnel side wall through two pairs of fixing nails 4, and the fixing plate 102 is fixed to the tunnel side wall through another pair of fixing nails 4, so that the installation base plate 1 and the fixing plate 102 are fixed to the tunnel side wall.

[0024] like Figure 1-5 As shown. The cross section of the receiving plate 101 is U-shaped, the bottom end of the support rod 2 is located inside the receiving plate 101, and the support rod 2 is connected to the receiving plate 101 via a rotating shaft 201. The arrangement of the receiving plate 101 not only enables the support rod 2 to be stably rotated and installed via the rotating shaft 201, but also the support rod 2 is located inside the receiving plate 101, which can prevent the support rod 2 from axially moving along the rotating shaft 201, thereby ensuring that the support rod 2 stably supports the centering plate 3.

[0025] like Figure 1 and Figure 3As shown. A slot 304 is provided in the axial direction at the connection end between the centering support plate 3 and the mounting base plate 1. A protrusion 202 is provided at the top of the support rod 2 in an inclined manner. The protrusion 202 is adapted to the slot 304. The fixing hole 305 is connected to the tail end of the slot 304. The slot 304 is provided on the centering support plate 3. The width of the protrusion 202 is smaller than the width of the support rod 2. The protrusion 202 can be inserted into the slot 304 for adaptation, so that the support rod 2 can effectively support the centering support plate 3.

[0026] like Figure 1 As shown. A bubble level 302 is fixedly arranged parallel to the side wall of the centering plate 3, and a reflective sheet 303 is attached to the outer wall of the centering plate 3. The bubble level 302 is arranged to check whether the centering plate 3 is in a horizontal state when supported by the support rod 2. If it is tilted, the angle of the support rod 2 is adjusted accordingly to adjust the angle of the centering plate 3, so as to ensure that the centering plate 3 is in a horizontal state when supported. The reflective sheet 303 is used to display the position of the centering plate 3 in the tunnel to avoid collision.

[0027] like Figure 3 As shown. A magnetic adsorption strip 103 is provided on the top of the mounting base plate 1. When the forced centering device is stored, it is necessary to prevent the support rod 2 from rotating downward. The vertically downward centering support plate 3 can limit the rotation of the support rod 2 to a certain extent. Then, by adding the adsorption strip 103, the adsorption strip 103 provides an upward magnetic adsorption force to the top of the support rod 2, thereby ensuring the stability of the support rod 2 in the stored state.

Claims

1. A device for measuring control points of forced centering of tunnel side walls, characterized in that: The invention comprises a mounting base plate (1) vertically fixed on a tunnel wall, a receiving plate (101) vertically fixedly connected to the bottom of the mounting base plate (1), a centering support plate (3) whose end is hinged to the mounting base plate (1), and a support rod (2) whose end is hinged to the bottom of the receiving plate (101), wherein the cross-section of the centering support plate (3) is U-shaped, the end of the support rod (2) is located on the inner side of the centering support plate (3), a fixing hole (305) adapted to the movable end of the support rod (2) is provided in the middle of the centering support plate (3), and a mounting structure is provided at the movable end of the centering support plate (3).

2. A tunnel side wall forced centering measurement control point device as claimed in claim 1, characterized in that: A pair of fixing nails (4) are provided at both ends of the installation base plate (1), and the tunnel wall is connected via the fixing nails (4); a fixing plate (102) is provided at the bottom end of the storage plate (101), and the fixing nails (4) are installed via the fixing plate (102).

3. A tunnel side wall forced centering measurement control point device as claimed in claim 1, characterized in that: The cross-section of the storage plate (101) is U-shaped, the bottom end of the support rod (2) is located inside the storage plate (101), and the support rod (2) and the storage plate (101) are connected via a rotating shaft (201).

4. A tunnel side wall forced centering measurement control point device as claimed in claim 1, characterized in that: A slot (304) is provided axially at the connection end between the centering support plate (3) and the mounting base plate (1); a protrusion (202) is obliquely fixedly provided at the top end of the support rod (2); the protrusion (202) is adapted to fit the slot (304); and the fixing hole (305) is communicated with the rear end of the slot (304).

5. A tunnel side wall forced centering measurement control point device as claimed in claim 1, characterized in that: A bubble level (302) is fixedly arranged in parallel on the side wall of the centering support plate (3), and a reflective sheet (303) is attached to the outer side wall of the centering support plate (3).

6. A tunnel side wall forced centering measurement control point device as claimed in claim 1, characterized in that: A magnetic adsorption strip (103) is provided on the top of the installation base plate (1).

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