Upper structure stress monitoring device for tunnel construction

Abstract

The invention belongs to the technical field of tunnel construction, and particularly provides an upper structure stress monitoring device for tunnel construction, which comprises a moving shell, a controller is embedded in the outer side, close to the bottom, of the moving shell, a servo motor, a screw rod, a movable plate and a vibration motor are arranged, the screw rod is driven by the servo motor to rotate, and the movable plate is driven by the vibration motor to rotate. The screw drives the movable plate to move upwards, the movable plate drives the multiple sliding blocks on the outer side to move upwards, the multiple sliding blocks jointly drive the movable sleeve to move upwards, the movable sleeve drives the internal main machine, the vibration motor, the transmission plate, the vibration plate and other components to move upwards, and after the vibration plate moves to be attached to the upper structure of the tunnel, the servo motor is closed; the screw rod is used for locking the vibration plate and other components, manual installation by workers is not needed, potential safety hazards are avoided, the vibration motor transmission plate, the vibration plate and other components are subsequently used for carrying out vibration tests on the upper structure of the tunnel, the frequency of the vibration motor is changed to obtain different data, and the strain conditions of the structure under different loads are calculated.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a superstructure stress monitoring device used in tunnel construction. Background Art

[0002] The main purpose of stress monitoring during tunnel construction is to ensure construction safety, verify preset parameters, and optimize design and construction methods. Stress monitoring during tunnel construction is an important technical means, which involves continuous monitoring of stress changes in the load-bearing structure. Through monitoring, problems can be discovered in a timely manner and corresponding measures can be taken to ensure the safety of the construction process.

[0003] Although there are many ways to excavate and support tunnels, the upper structures (lining, segments, etc.) are mostly arched after forming. The arch bears the upper load. With the increase of service life, the various mechanical properties of the upper structure (compression, bending, shear) are reduced, which is prone to safety accidents. Therefore, it is necessary to monitor the stress of the tunnel upper structure, that is, to monitor the arch structure at the top of the tunnel. The upper arch structure of the tunnel is usually called the "top arch", and some areas also call it the "cave top arch" or "upper arch".

[0004] The existing technology usually adopts the optical strain measurement method (a non-contact measurement technology that uses optical principles to measure the strain of an object without direct contact with the object being measured, thereby avoiding the additional pressure and damage that traditional contact measurement may bring to the object being measured.), but it requires the installation of corresponding equipment both inside the tunnel and on the top of the tunnel, and when installing the lens equipment on the top of the tunnel, the staff needs to climb up to a high place with the help of a ladder for installation, which is extremely difficult and prone to safety hazards, and cannot guarantee the safety performance of the staff.

[0005] To this end, the present application proposes a superstructure stress monitoring device for tunnel construction. Summary of the invention

[0006] The technical problem solved by the present invention is to overcome the defects of the prior art such as inconvenient installation and insufficient safety performance, and provide an upper structure stress monitoring device for tunnel construction.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a superstructure stress monitoring device for tunnel construction, comprising a movable shell, a controller is embedded and installed on the outer side of the movable shell near the bottom, and a movable sleeve is movably installed on the outer side of the movable shell near the top, a plurality of sliders are fixedly connected to the inner cavity of the movable sleeve, a plurality of slide grooves are opened on the outer wall of the movable shell, a plurality of the sliders all penetrate the corresponding slide grooves, and a movable plate is fixedly installed together, the movable plate is located in the inner cavity of the movable shell, and a protective component is arranged at the bottom of the movable plate, a servo motor is fixedly connected to the bottom of the inner wall of the movable shell, a screw is fixedly connected to the top of the servo motor, the top of the screw penetrates the movable plate and is threadedly connected to the movable plate, a vibration component is arranged on the top of the movable sleeve, a plurality of ventilation holes are opened on the four sides of the outer wall of the movable shell, and a support component is arranged on the outer side of the movable shell near the bottom.

[0008] Furthermore, the protective assembly includes several side blocks, several of the side blocks are fixedly connected to the bottom of the movable plate, and several of the side blocks are fixedly installed with connecting ropes on the outside, several of the slide grooves are installed with fixed pulleys in the inner cavity, the end of the connecting rope away from the side block passes through the slide groove and the corresponding fixed pulley, and is fixedly connected with a counterweight block, several of the counterweight blocks are fixedly connected with connecting strips at the bottom, and several of the connecting strips are commonly fixedly connected with a sheath at the bottom, and the sheath is arranged on the outside of the movable shell.

[0009] Furthermore, the vibration component includes a main unit, a plurality of fixing frames are fixedly connected to the bottom of the main unit, the plurality of fixing frames are fixed on the inner wall of the movable sleeve, a connecting plate is fixedly installed on the top of the main unit, a plurality of vibration motors are fixedly installed on the top of the connecting plate, a transmission plate is fixedly installed on the top of the plurality of vibration motors, and a vibration plate is fixedly installed on the top of the transmission plate.

[0010] Furthermore, the supporting assembly includes the two guard frames, both of which are clamped on the outside of the movable shell, and a circular plate is fixedly installed on the side away from each other of the two guard frames, and a screw rod is provided in the inner cavity of the two circular plates, and the ends of the two screw rods away from each other respectively penetrate the corresponding side walls of the circular plates and are threadedly connected to the side walls of the circular plates, and the ends of the two screw rods away from each other are rotatably connected to the mounting blocks, and fixed piles are installed on the two mounting blocks.

[0011] Furthermore, the host includes a PLC single chip computer module, an alarm module, a feedback module, a storage module, a power module, a signal transmission module and a network module.

[0012] Furthermore, two rectangular frames are movably installed on four sides of the outer wall of the movable shell, and dustproof nets are fixedly installed in the inner cavities of the two rectangular frames.

[0013] Furthermore, a plurality of the rectangular frames are fixedly provided with card blocks near the four corners, a plurality of card slots are provided on the outer wall of the movable shell, and the card blocks are inserted into the inner cavities of the corresponding card slots.

[0014] Furthermore, a plurality of the fixed pulleys are respectively located in the corresponding slide groove inner cavity near the bottom.

[0015] Furthermore, the top surface of the vibration plate is arc-shaped.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is in use, a servo motor, a screw, a movable plate and a vibration motor are provided. The servo motor is used to drive the screw to rotate, the screw drives the movable plate to move up, the movable plate drives multiple sliders on the outside to move up, the multiple sliders jointly drive the movable sleeve to move up, the movable sleeve drives the internal main unit, the vibration motor, the transmission plate and the vibration plate and other components to move up, after the vibration plate moves to fit with the upper structure of the tunnel, the servo motor is turned off, and the screw is used to lock the vibration plate and other components, without the need for manual installation by staff, thus avoiding safety hazards, and subsequently using the vibration motor transmission plate and the vibration plate and other components to perform vibration tests on the upper structure of the tunnel, and changing the frequency of the vibration motor to obtain different data, and calculating the strain of the structure under different loads.

[0017] 2. When the present invention is in use, by providing a guard frame, a circular plate, a screw rod and a fixed pile, after the mobile shell is used to move the entire device to a suitable position, the two guard frames are respectively clamped on the outside of the mobile shell near the bottom, and the position of the mounting block is adjusted by the threaded connection between the screw rod and the circular plate, so as to facilitate the fixing pile on the mounting block to the inner wall of the tunnel, thereby fixing the guard frame and other components, and using the fixed guard frame to realize the clamping limit of the mobile shell and other components, thereby improving the stability of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the present invention; Figure 4 It is a structural schematic diagram of the vibration motor and other components of the present invention; Figure 5 It is a schematic diagram of the structure of the dustproof net of the present invention; Figure 6 It is a structural schematic diagram of the guard frame of the present invention; Figure 7 It is a schematic diagram of the installation status of the detection device of the present invention and the tunnel; Figure 8 Module composition distribution diagram of the host of the present invention.

[0019] Among them: 1-movable shell; 2-controller; 3-servo motor; 4-screw; 5-movable plate; 6-slider; 7-slide; 8-movable sleeve; 9-fixed frame; 10-host; 11-connecting plate; 12-vibration motor; 13-transmission plate; 14-vibration plate; 15-side block; 16-fixed pulley; 17-connecting rope; 18-counterweight block; 19-connecting strip; 20-sheath; 21-ventilation hole; 22-card slot; 23-rectangular frame; 24-dustproof net; 25-card block; 26-guard frame; 27-reciprocating plate; 28-screw; 29-mounting block; 30-fixed pile; 31-PLC microcontroller module; 32-alarm module; 33-feedback module; 34-storage module; 35-power module; 36-signal transmission module; 37-network module. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1-7 As shown, the present invention proposes a superstructure stress monitoring device for tunnel construction, comprising a moving shell 1, a controller 2 is embedded and installed near the bottom of the outer side of the moving shell 1, and a movable sleeve 8 is movably installed near the top of the outer side of the moving shell 1, a plurality of sliders 6 are fixedly connected to the inner cavity of the movable sleeve 8, a plurality of slide grooves 7 are opened on the outer wall of the moving shell 1, and the plurality of sliders 6 all penetrate the corresponding slide grooves 7, and a movable plate 5 is fixedly installed together, the movable plate 5 is located in the inner cavity of the moving shell 1, and a protective component is arranged at the bottom of the movable plate 5, the protective component is used to cover the controller 2, the controller 2 is placed inside the protective component, and the protective component is used to protect the controller 2, so as to effectively prevent the controller 2 from being affected by the outside world, resulting in a malfunction in the operation of the device; A servo motor 3 is fixedly connected to the bottom of the inner wall of the movable shell 1, a screw 4 is fixedly connected to the top of the servo motor 3, the top of the screw 4 passes through the movable plate 5 and is threadedly connected to the movable plate 5, and a vibration component is arranged on the top of the movable sleeve 8, and the vibration component is used to implement vibration testing of the upper structure of the tunnel, obtain various values, and calculate the final stress data; A plurality of ventilation holes 21 are provided on the four sides of the outer wall of the movable shell 1, and a support assembly is provided near the bottom of the outer side of the movable shell 1. The support assembly can improve the stability of the overall device and ensure that the overall device will not malfunction, displace, tip over, or have other problems during subsequent operation.

[0022] In order to ensure that the device will not be disturbed by the outside world during operation and to ensure that the device can carry out subsequent work smoothly, specifically, the protection component includes several side blocks 15, several side blocks 15 are fixedly connected to the bottom of the movable plate 5, and several side blocks 15 are fixedly installed with connecting ropes 17 on the outside, and several slide grooves 7 are installed with fixed pulleys 16 in the inner cavity. The end of the connecting rope 17 away from the side block 15 passes through the slide groove 7 and the corresponding fixed pulley 16, and is fixedly connected with a counterweight block 18. Several counterweight blocks 18 are fixedly connected with connecting strips 19 at the bottom, and several connecting strips 19 are fixedly connected with a sheath 20 at the bottom. The sheath 20 is sleeved on the outside of the movable shell 1. During the movement of the movable plate 5, it will drive multiple side blocks 15 at the bottom to move synchronously. The multiple side blocks 15 respectively pull the counterweight blocks 18 on the corresponding connecting ropes 17 to move, and the counterweight blocks 18 drive the connecting strips 19 to move. The multiple connecting strips 19 jointly drive the sheath 20 to move, thereby realizing the protection operation of the controller 2.

[0023] In order to realize the subsequent vibration test and complete the stress monitoring work on the upper structure of the tunnel, specifically, the vibration component includes a main unit 10, a plurality of fixed frames 9 are fixedly connected to the bottom of the main unit 10, and the plurality of fixed frames 9 are fixed on the inner wall of the movable sleeve 8. A connecting plate 11 is fixedly installed on the top of the main unit 10, and a plurality of vibration motors 12 are fixedly installed on the top of the connecting plate 11. A transmission plate 13 is fixedly installed on the top of the plurality of vibration motors 12, and a vibration plate 14 is fixedly installed on the top of the transmission plate 13. Vibration is generated by driving multiple groups of vibration motors 12, so that the vibration force is progressively transmitted to the upper structure of the tunnel along the transmission plate 13 and the vibration plate 14, and the data is collected into the host 10.

[0024] In order to improve the operating stability of the overall device and ensure that there will be no malfunctions during the operation of the device, specifically, the supporting assembly includes two guard frames 26, the two guard frames 26 are both clamped on the outside of the moving shell 1, and a circular plate 27 is fixedly installed on the side away from the two guard frames 26, and the inner cavities of the two circular plates 27 are provided with screw rods 28, and the ends of the two screw rods 28 that are away from each other respectively penetrate the corresponding side walls of the circular plates 27 and are threadedly connected to the side walls of the circular plates 27, and the ends of the two screw rods 28 that are away from each other are respectively rotatably connected with mounting blocks 29, and fixed piles 30 are penetrated and installed on the two mounting blocks 29. By clamping the two guard frames 26 on the outside of the moving shell 1 and fixing the mounting blocks 29 to the inner wall of the tunnel by using the fixed piles 30, the guard frames 26 are sufficiently stable, and the overall device can further operate stably.

[0025] In order to obtain data in time and make judgments in time according to the data to ensure safety performance, specifically, the host 10 includes a PLC single-chip computer module 31, an alarm module 32, a feedback module 33, a storage module 34, a power module 35, a signal transmission module 36 and a network module 37. The power module 35 is used for power supply, and the feedback module 33 inside the host 10 is used to obtain stress information, and the information is stored in the storage module 34. At the same time, the signal transmission module 36 and the network module 37 are used to cooperate to transmit the obtained information in real time to an external terminal: such as a computer, a mobile phone, a tablet, etc., and the monitored staff receives it in real time and calculates the stress results. Then, the pre-input instructions are used to cooperate with the PLC single-chip computer module 31 to change the frequency of the vibration motor 12 to obtain different data, and calculate the strain of the structure under different loads. When an abnormality occurs, the alarm module 32 is used to sound an alarm to improve the staff's abnormality and ensure the safety performance of the construction.

[0026] In order to prevent external impurities and dust from entering the interior of the mobile shell 1 through the ventilation holes 21 during ventilation and affecting the normal operation of the internal electronic components, specifically, two rectangular frames 23 are movably installed on the four sides of the outer wall of the mobile shell 1, and dustproof nets 24 are fixedly installed in the inner cavities of the two rectangular frames 23. Multiple groups of dustproof nets 24 are used to block adjacent ventilation holes 21 to prevent impurities from entering the interior of the mobile shell 1.

[0027] In order to facilitate the subsequent disassembly and cleaning of the dustproof net 24, specifically, several rectangular frames 23 are fixedly installed with blocks 25 near the four corners, and the outer wall of the mobile shell 1 is provided with several slots 22. The blocks 25 are inserted into the corresponding inner cavities of the slots 22. The installation of the rectangular frame 23 and the dustproof net 24 is achieved by the snap connection between the blocks 25 and the slots 22, and the blocks 25 can be pulled out of the slots 22 for disassembly later, which is convenient to operate.

[0028] In order to achieve normal up and down height adjustment of the movable sleeve 8 and other components, specifically, several fixed pulleys 16 are respectively located in the corresponding inner cavity of the slide groove 7 near the bottom. This setting can effectively avoid the fixed pulley 16 being located inside the slide groove 7, causing obstruction to the sliding of the slider 6, thereby ensuring the normal operation of the device.

[0029] In order to make the vibration plate 14 better fit the upper structure of the tunnel, specifically, the top surface of the vibration plate 14 is set in an arc shape. Through this setting, the vibration plate 14 can better fit the upper structure of the tunnel, so that the vibration effect is better and the monitoring effect is also better.

[0030] Working principle: When the present application is in use, the monitoring device is first moved to the monitoring point by using the mobile shell 1, and then the two guard frames 26 are respectively clamped on the outside of the mobile shell 1 near the bottom, and the threaded connection between the screw rod 28 and the circular plate 27 is used to adjust the position of the mounting block 29, so as to facilitate the fixing of the fixing pile 30 on the mounting block 29 to the inner wall of the tunnel, so as to fix the guard frame 26 and other components, and use the fixed guard frame 26 to realize the clamping limit of the mobile shell 1 and other components, so as to improve the stability of the overall equipment, and then use the controller 2 to input the operation instruction in advance and drive the servo motor 3, so that the servo motor 3 drives the screw rod 4 to rotate, the screw rod 4 drives the movable plate 5 to move up, the movable plate 5 drives the outer multiple sliders 6 to move up, and the multiple sliders 6 jointly drive the movable sleeve 8 to move, and the movable sleeve 8 drives the internal main engine 10, the vibration motor 12, the transmission plate 13 and the vibration plate 14 and other components to move up. After the vibration plate 14 moves to fit with the tunnel upper structure, The servo motor 3 is turned off, and the screw rod 4 is used to lock the vibration plate 14 and other components. There is no need for manual installation by the staff to avoid potential safety hazards. Subsequently, multiple groups of vibration motors 12 are driven, and the vibration motors 12, transmission plates 13, vibration plates 14 and other components are used to perform vibration tests on the upper part of the tunnel structure. The stress information is obtained by using the feedback module 33 inside the host 10, and the information is stored in the storage module 34. At the same time, the obtained information is transmitted to the external terminal in real time by using the cooperation of the signal transmission module 36 and the network module 37: such as a computer, a mobile phone, a tablet, etc. The monitored staff receives it in real time and calculates the stress result. Then, the frequency of the vibration motor 12 is changed by using the pre-entered instructions in cooperation with the PLC single-chip module 31 to obtain different data, and the strain of the structure under different loads is calculated. When an abnormality occurs, the alarm module 32 is used to sound an alarm to improve the staff's abnormality and ensure the safety performance of the construction. During the upward movement of the above-mentioned movable plate 5, the movable plate 5 also drives the multiple side blocks 15 at the bottom to move, and the multiple side blocks 15 respectively drive the corresponding connecting ropes 17 to move upward. Since the other end of the connecting rope 17 is installed with a counterweight block 18, when the side block 15 and the connecting rope 17 move upward, the counterweight block 18 moves downward under the influence of its own gravity, so that the connecting rope 17 is always in a taut state, and cooperates with the fixed pulley 16 to prevent the connecting rope 17 from slipping. When the multiple counterweight blocks 18 move downward synchronously, they will respectively drive the corresponding connecting strips 19 to move downward, and the multiple connecting strips 19 jointly drive the sheath 20 to move downward, and the controller 2 is covered by the sheath 20 to realize the protection operation of the controller 2, effectively preventing the controller 2 from being accidentally touched or disturbed by the outside world, which affects the normal operation of the device; During the operation of the above-mentioned equipment, the electronic components will generate a large amount of heat. The arrangement of multiple sets of ventilation holes 21 can enable air circulation between the inside of the mobile shell 1 and the outside, thereby realizing the heat dissipation function. In addition, during the ventilation process, the arrangement of multiple sets of dustproof nets 24 can effectively prevent external impurities, dust, etc. from entering the inside of the mobile shell 1 through the ventilation holes 21 and clinging to the surface of the electronic components, thereby affecting the heat dissipation of the internal electronic components. Subsequently, the card block 25 on the rectangular frame 23 can be pulled out of the card slot 22 to realize the disassembly of the dustproof net 24, and then the dustproof net 24 can be cleaned to avoid the accumulation of impurities on the dustproof net 24, thereby affecting the ventilation and heat dissipation effects.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A superstructure stress monitoring device for tunnel construction, comprising a moving shell (1), characterized in that: A controller (2) is embedded and installed near the bottom of the outer side of the movable shell (1), and a movable sleeve (8) is movably installed near the top of the outer side of the movable shell (1). A plurality of sliders (6) are fixedly connected to the inner cavity of the movable sleeve (8). A plurality of slide grooves (7) are opened on the outer wall of the movable shell (1). The plurality of sliders (6) penetrate the corresponding slide grooves (7) and are jointly fixedly installed with a movable plate (5). The movable plate (5) is located in the inner cavity of the movable shell (1), and a protective component is arranged at the bottom of the movable plate (5). A servo motor (3) is fixedly connected to the bottom of the inner wall of the movable shell (1). A screw rod (4) is fixedly connected to the top of the servo motor (3). The top of the screw rod (4) penetrates the movable plate (5) and is threadedly connected to the movable plate (5). A vibration component is arranged at the top of the movable sleeve (8). A plurality of ventilation holes (21) are opened on four sides of the outer wall of the movable shell (1), and a support component is arranged near the bottom of the outer side of the movable shell (1).

2. The superstructure stress monitoring device for tunnel construction according to claim 1, characterized in that: The protection assembly comprises a plurality of side blocks (15), wherein the plurality of side blocks (15) are fixedly connected to the bottom of the movable plate (5), and a connecting rope (17) is fixedly installed on the outer side of the plurality of side blocks (15), and a fixed pulley (16) is installed in the inner cavity of the plurality of slide grooves (7), and an end of the connecting rope (17) away from the side block (15) passes through the slide groove (7) and the corresponding fixed pulley (16) and is fixedly connected to a counterweight block (18), and a connecting strip (19) is fixedly connected to the bottom of the plurality of counterweight blocks (18), and a protective sleeve (20) is fixedly connected to the bottom of the plurality of connecting strips (19), and the protective sleeve (20) is sleeved on the outer side of the movable shell (1).

3. The superstructure stress monitoring device for tunnel construction according to claim 1, characterized in that: The vibration component comprises a main unit (10), the bottom of the main unit (10) is fixedly connected to a plurality of fixing frames (9), the plurality of fixing frames (9) are fixed to the inner wall of the movable sleeve (8), the top of the main unit (10) is fixedly mounted with a connecting plate (11), the top of the connecting plate (11) is fixedly mounted with a plurality of vibration motors (12), the tops of the plurality of vibration motors (12) are fixedly mounted with a transmission plate (13), and the top of the transmission plate (13) is fixedly mounted with a vibration plate (14).

4. The superstructure stress monitoring device for tunnel construction according to claim 1, characterized in that: The support assembly comprises two guard frames (26), the two guard frames (26) are both clamped on the outside of the moving shell (1), and a circular plate (27) is fixedly installed on the opposite side of the two guard frames (26), and the inner cavities of the two circular plates (27) are provided with screw rods (28), and the two ends of the two screw rods (28) respectively penetrate the corresponding side walls of the circular plates (27) and are threadedly connected to the side walls of the circular plates (27), and the two ends of the two screw rods (28) are respectively rotatably connected to the mounting blocks (29), and the two mounting blocks (29) are penetrated and installed with fixing piles (30).

5. The superstructure stress monitoring device for tunnel construction according to claim 3, characterized in that: The host (10) comprises a PLC single chip computer module (31), an alarm module (32), a feedback module (33), a storage module (34), a power supply module (35), a signal transmission module (36) and a network module (37).

6. The superstructure stress monitoring device for tunnel construction according to claim 1, characterized in that: Two rectangular frames (23) are movably mounted on the four sides of the outer wall of the movable shell (1), and dustproof nets (24) are fixedly mounted in the inner cavities of the two rectangular frames (23).

7. The superstructure stress monitoring device for tunnel construction according to claim 6, characterized in that: A plurality of the rectangular frames (23) are fixedly mounted with clamping blocks (25) near the four corners, a plurality of clamping slots (22) are provided on the outer wall of the movable shell (1), and the clamping blocks (25) are inserted into the inner cavities of the corresponding clamping slots (22).

8. The superstructure stress monitoring device for tunnel construction according to claim 2, characterized in that: The plurality of fixed pulleys (16) are respectively located in the inner cavity of the corresponding slide groove (7) near the bottom.

9. The superstructure stress monitoring device for tunnel construction according to claim 3, characterized in that: The top surface of the vibration plate (14) is arranged in an arc shape.

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