Portable stress change monitor

Abstract

The utility model discloses a portable stress change monitor, which relates to the technical field of stress change monitoring and comprises a mounting frame assembly, an upper strain gauge, a lower strain gauge and an auxiliary mounting assembly. An upper strain gauge and a lower strain gauge are installed on the inner sides of the upper steel arch frame plate and the lower steel arch frame plate correspondingly, auxiliary installation assemblies are installed on the two sides of the upper side and the lower side of the front portion of the installation frame assembly correspondingly, and each auxiliary installation assembly comprises a connecting frame, an inner groove, a damping rotating shaft and an anti-disengaging baffle. According to the portable stress change monitor, the clamping plates on the two sides of the upper protection box and the lower protection box can be inserted into the inner grooves of the connecting frame and are connected with the inner grooves in a clamped mode, the positions of the anti-disengaging baffles can be conveniently rotated and adjusted through the damping rotating shafts, and the anti-disengaging baffles can limit the clamping plates in the inner grooves so that the clamping plates cannot be disengaged; therefore, anti-falling installation of the upper protection box and the lower protection box is achieved, and bolts are not needed for installation and connection.

Description

Technical Field

[0001] The utility model relates to the technical field of stress change monitoring, in particular to a portable stress change monitor. Background Art

[0002] In tunnel construction, the steel arch, anchor bolts, steel bar grids, connecting steel bars, concrete, etc. form a rigid body to carry out the initial support of the tunnel and prevent it from collapsing. During the construction process, it is necessary to monitor the deformation of the load-bearing structure in the tunnel support to optimize the support parameters. When an object deforms due to external factors (such as force, humidity, temperature field change, etc.), internal forces that interact with each other are generated among the various parts of the object to resist the action of such external factors and attempt to restore the object from the deformed position to the position before deformation; the internal force per unit area at a certain point on the cross-section under investigation is called stress, and a stress change monitor is required during the stress detection process.

[0003] Although some existing portable stress change monitors can protect the strain gauge, the installation process of the protection structure requires the use of bolts for connection, and the disassembly and assembly are relatively troublesome.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a portable stress change monitor is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a portable stress change monitor to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A portable stress change monitor, including an installation frame assembly, an upper strain gauge, a lower strain gauge and an auxiliary installation assembly. Steel arch plates are respectively arranged on the upper and lower sides of the installation frame assembly. The upper strain gauge and the lower strain gauge are respectively installed on the inner sides of the upper and lower steel arch plates. Auxiliary installation assemblies are installed on both sides of the upper and lower sides in front of the installation frame assembly, and the auxiliary installation assembly includes a connection frame, an inner groove, a damping rotating shaft and an anti-detachment baffle. An inner groove is arranged inside the connection frame, and an anti-detachment baffle is rotatably installed on one side of the connection frame through a damping rotating shaft, and the anti-detachment baffle is located in front of the inner groove. Upper protection boxes and lower protection boxes are respectively installed outside the upper strain gauge and the lower strain gauge, and clamping plates are fixed on the left and right sides of the upper protection box and the lower protection box.

[0007] Further, the installation frame assembly includes a lower plate, an upper plate and a connection slider. The upper plate is installed on the upper side of the lower plate, and a connection slider is fixed in the middle of the upper plate.

[0008] Further, the mounting frame assembly further includes a connecting chute, a connecting bolt, and a handle. A connecting chute is provided in the middle of the lower plate corresponding to the connecting slider, and the connecting slider is slidably connected to the connecting chute. Connecting bolts penetrate through both sides at the rear of the lower plate, and a handle is fixed in the middle at the rear of the lower plate.

[0009] Further, the lower plate is attached to the lower steel arch frame plate, and at the same time, the upper plate is attached to the upper steel arch frame plate. The upper strain gauge and the lower strain gauge are respectively bolted to the corresponding steel arch frame plates.

[0010] Further, the upper protection box and the lower protection box are respectively slidably connected to the upper and lower steel arch frame plates, and wire grooves are provided on one side of each of the upper protection box and the lower protection box.

[0011] Further, the clamping plate matches the size of the inner groove, and the clamping plate is snap-fitted with the inner groove.

[0012] The present utility model provides a portable stress change monitor, which has the following beneficial effects:

[0013] The present utility model is provided with an auxiliary installation component. The clamping plates on both sides of the upper protection box and the lower protection box can be inserted into the inner groove of the connecting frame and snap-fitted with the inner groove. The anti-detachment baffle can be conveniently rotated and adjusted in position through the damping rotating shaft, so that the anti-detachment baffle can limit the clamping plate in the inner groove and prevent it from detaching, so as to realize the anti-detachment installation of the upper protection box and the lower protection box. There is no need to use bolts for installation connection, so that the upper protection box and the lower protection box can form an enclosure space to protect the upper strain gauge and the lower strain gauge from being disturbed and damaged by concrete.

[0014] The present utility model is provided with a mounting frame assembly. The handle is provided to facilitate the portability of the mounting frame assembly. The upper strain gauge and the lower strain gauge corresponding to the upper and lower steel arch frame plates are respectively used to monitor the stress changes above and below the support structure. The wire grooves are provided for passing the connecting wires of the upper strain gauge and the lower strain gauge. The height of the upper plate can be adjusted conveniently through the sliding fit between the connecting slider and the connecting chute, so as to adjust the total length between the upper plate and the lower plate, and thus adjust the distance between the upper protection box and the lower protection box, which is applicable to support structures of different thicknesses. And the adjusted mounting frame assembly can be locked conveniently through the connecting bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded structural schematic diagram of a portable stress change monitor of the present utility model;

[0016] Figure 2 is an overall structural schematic diagram of a portable stress change monitor of the present utility model;

[0017] Figure 3 Front view structural schematic diagram of the mounting frame assembly of a portable stress change monitor of the present utility model;

[0018] Figure 4 Rear view structural schematic diagram of the mounting frame assembly of a portable stress change monitor of the present utility model.

[0019] In the figure: 1. Mounting frame assembly; 101. Lower plate; 102. Upper plate; 103. Connecting slider; 104. Connecting chute; 105. Connecting bolt; 106. Handle; 2. Steel arch frame plate; 3. Upper strain gauge; 4. Lower strain gauge; 5. Auxiliary mounting assembly; 501. Connecting frame; 502. Inner groove; 503. Damping rotating shaft; 504. Anti - detachment baffle; 6. Upper protection box; 7. Lower protection box; 8. Clamping plate; 9. Wire groove. Specific embodiments

[0020] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] As Figures 3 - 4 shown, a portable stress change monitor includes a mounting frame assembly 1, an upper strain gauge 3, a lower strain gauge 4 and an auxiliary mounting assembly 5. Steel arch frame plates 2 are respectively arranged on the upper and lower sides of the mounting frame assembly 1. The mounting frame assembly 1 includes a lower plate 101, an upper plate 102 and a connecting slider 103. The upper plate 102 is installed on the upper side of the lower plate 101, and a connecting slider 103 is fixed in the middle of the upper plate 102. The mounting frame assembly 1 further includes a connecting chute 104, a connecting bolt 105 and a handle 106. A connecting chute 104 is provided in the middle of the lower plate 101 corresponding to the connecting slider 103, and the connecting slider 103 is slidably connected with the connecting chute 104. Connecting bolts 105 penetrate through both sides at the rear of the lower plate 101, and a handle 106 is fixed in the middle at the rear of the lower plate 101. The lower plate 101 is in contact with the lower steel arch frame plate 2, and at the same time, the upper plate 102 is in contact with the upper steel arch frame plate 2. The upper strain gauge 3 and the lower strain gauge 4 are respectively bolt - connected to the corresponding steel arch frame plates 2; the setting of the handle 106 facilitates the portability of the mounting frame assembly 1. The upper strain gauge 3 and the lower strain gauge 4 corresponding to the upper and lower two steel arch frame plates 2 are respectively used to monitor the stress changes in the upper and lower sides of the support structure. The setting of the wire groove 9 is used to pass through the connecting wires of the upper strain gauge 3 and the lower strain gauge 4. Through the sliding fit between the connecting slider 103 and the connecting chute 104, it is convenient to adjust the height of the upper plate 102, so as to adjust the total length between the upper plate 102 and the lower plate 101, thereby adjusting the distance between the upper protection box 6 and the lower protection box 7, which is applicable to support structures of different thicknesses, and the adjusted mounting frame assembly 1 can be locked by the connecting bolt 105.

[0022] As Figures 1 - 3 shown, upper strain gauges 3 and lower strain gauges 4 are respectively installed on the inner sides of the upper and lower steel arch frame plates 2. Auxiliary installation components 5 are installed on both sides of the upper and lower sides in front of the installation frame assembly 1. The auxiliary installation component 5 includes a connection frame 501, an inner groove 502, a damping rotating shaft 503 and an anti-disengagement baffle 504. An inner groove 502 is provided inside the connection frame 501, and an anti-disengagement baffle 504 is rotatably installed on one side of the connection frame 501 through a damping rotating shaft 503, and the anti-disengagement baffle 504 is located in front of the inner groove 502. Upper protection boxes 6 and lower protection boxes 7 are respectively installed outside the upper strain gauges 3 and the lower strain gauges 4. The upper protection boxes 6 and the lower protection boxes 7 are respectively in sliding connection with the upper and lower steel arch frame plates 2. A wire groove 9 is provided on one side of each of the upper protection boxes 6 and the lower protection boxes 7. Clamping plates 8 are fixed on the left and right sides of the upper protection boxes 6 and the lower protection boxes 7. The clamping plates 8 are in conformity with the size of the inner groove 502, and the clamping plates 8 are in snap connection with the inner groove 502; the clamping plates 8 on both sides of the upper protection boxes 6 and the lower protection boxes 7 can be inserted into the inner groove 502 of the connection frame 501 and be in snap connection with the inner groove 502. The damping rotating shaft 503 facilitates rotating and adjusting the position of the anti-disengagement baffle 504, so that the anti-disengagement baffle 504 can limit the clamping plates 8 in the inner groove 502 to prevent them from disengaging, so as to realize the anti-disengagement installation of the upper protection boxes 6 and the lower protection boxes 7. There is no need to use bolts for installation and connection, so that the upper protection boxes 6 and the lower protection boxes 7 can form an enclosed space to protect the upper strain gauges 3 and the lower strain gauges 4 and prevent them from being disturbed and damaged by concrete.

[0023] In summary, as Figures 1 - 4As shown, when the portable stress change monitor is in use, first, it can be carried conveniently through the handle 106 for the mounting frame assembly 1. During use, the upper strain gauge 3 and the lower strain gauge 4 are respectively connected to the upper and lower steel arch frame plates 2. Then, the mounting frame assembly 1 is connected to the side position of the steel arch frame of the steel arch frame plate 2. At this time, the height of the upper plate 102 can be adjusted through the sliding fit between the connecting slider 103 and the connecting chute 104. Then, the adjusted mounting frame assembly 1 is locked through the connecting bolt 105, so as to adjust the distance between the upper protection box 6 and the lower protection box 7, which is suitable for support structures of different thicknesses. Then, the clamping plates 8 on both sides of the upper protection box 6 and the lower protection box 7 are inserted into the inner groove 502 of the connecting frame 501 and are snap-connected to the inner groove 502. Then, the position of the anti-disengagement baffle 504 is adjusted by rotating through the damping rotating shaft 503, so that the anti-disengagement baffle 504 can limit the clamping plate 8 in the inner groove 502 to prevent it from disengaging. Thus, the upper protection box 6 and the lower protection box 7 can form an enclosed space to protect the upper strain gauge 3 and the lower strain gauge 4 from being disturbed and damaged by concrete. Then, during use, the upper strain gauge 3 and the lower strain gauge 4 corresponding to the upper and lower steel arch frame plates 2 can respectively monitor the stress changes above and below the concrete. The wire groove 9 is provided for passing through the connecting wires of the upper strain gauge 3 and the lower strain gauge 4. In this way, the use process of the portable stress change monitor is completed.

[0024] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present invention and its practical applications, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A portable stress change monitor, comprising a mounting frame assembly (1), an upper strain gauge (3), a lower strain gauge (4) and an auxiliary mounting assembly (5), characterized in that: The upper and lower sides of the mounting frame assembly (1) are respectively provided with steel arch frame plates (2), and the inner sides of the upper and lower steel arch frame plates (2) are respectively installed with an upper strain gauge (3) and a lower strain gauge (4). The upper and lower sides of the front of the mounting frame assembly (1) are both installed with auxiliary mounting assemblies (5), and the auxiliary mounting assembly (5) includes a connecting frame (501), an inner groove (502), a damping shaft (503) and an anti-slip baffle (504). The connecting frame An inner groove (502) is arranged on the inner side of the connecting frame (501), and an anti-slip baffle (504) is rotatably installed on one side of the connecting frame (501) through a damping shaft (503), and the anti-slip baffle (504) is located in front of the inner groove (502), and an upper protection box (6) and a lower protection box (7) are respectively installed on the outside of the upper strain gauge (3) and the lower strain gauge (4), and a clamping plate (8) is fixed on the left and right sides of the upper protection box (6) and the lower protection box (7).

2. A portable stress change monitor according to claim 1, characterized in that: The mounting frame assembly (1) comprises a lower plate (101), an upper plate (102) and a connecting slider (103); the upper plate (102) is mounted on the upper side of the lower plate (101), and the connecting slider (103) is fixed in the middle of the upper plate (102).

3. A portable stress change monitor according to claim 2, characterized in that: The mounting frame assembly (1) further comprises a connecting groove (104), a connecting bolt (105) and a handle (106); a connecting groove (104) is provided in the middle of the lower plate (101) corresponding to the connecting slider (103); the connecting slider (103) and the connecting groove (104) are slidably connected; connecting bolts (105) penetrate both sides of the rear of the lower plate (101), and a handle (106) is fixed in the middle of the rear of the lower plate (101).

4. A portable stress change monitor according to claim 2, characterized in that: The lower plate (101) fits with the steel arch frame plate (2) below, and the upper plate (102) fits with the steel arch frame plate (2) above. The upper strain gauge (3) and the lower strain gauge (4) are respectively connected to the corresponding steel arch frame plate (2) by bolts.

5. A portable stress change monitor according to claim 1, characterized in that: The upper protection box (6) and the lower protection box (7) are respectively connected to the upper and lower steel arch frame plates (2) in a sliding manner, and a wire groove (9) is provided on one side of the upper protection box (6) and the lower protection box (7).

6. A portable stress change monitor according to claim 1, characterized in that: The sizes of the clamping plate (8) and the inner groove (502) match each other, and the clamping plate (8) and the inner groove (502) are clamped and connected.

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