Subway underground excavation station steel pipe column stress automatic monitoring device

Abstract

A subway underground excavation station steel pipe column stress automatic monitoring device belongs to the technical field of subway construction monitoring and comprises a base body, a plurality of acquisition instruments are arranged on the front side of the base body, a stand column is mounted at the bottom of the base body, and a plurality of protective shells are mounted on the periphery of the stand column. Connecting blocks B are fixedly installed at the positions, close to the top and the bottom, of an inner cavity of the protective shell, and a strain rod is jointly arranged on the front sides of the connecting blocks B. When the stand column is monitored, the stress of the stand column can be monitored in time by arranging the strain rod, the coil, the cable, the connecting blocks A and an acquisition instrument, and workers do not need to watch with naked eyes; according to the strain rod monitoring device, the working intensity of workers is relieved, the monitoring accuracy of the stand column is improved, when the strain rod is limited, an insertion block can be inserted into an inner cavity of an insertion groove by arranging an installation block, a telescopic rod A, a sliding block, a spring A and a shifting block, the strain rod is conveniently installed, and the installation efficiency of the strain rod can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of subway construction monitoring, in particular to an automatic stress monitoring device for steel pipe columns in a subway dark excavation station. Background Art

[0002] During the construction of underground subway stations, steel pipe columns play a vital supporting role. In order to ensure construction safety and the stability of the station structure, the stress of the steel pipe columns needs to be monitored in real time.

[0003] Traditional monitoring methods often have problems such as low accuracy, poor real-time performance, and high labor intensity, which are difficult to meet the needs of modern subway construction. Therefore, it is of great practical significance to develop an efficient, accurate, and automated steel pipe column stress monitoring device.

[0004] Aiming at the above problems, an automatic stress monitoring device for steel pipe columns in underground excavation stations of subways was proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic stress monitoring device for steel pipe columns in a subway underground excavation station. The device is used to work, thereby solving the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic stress monitoring device for steel pipe columns in underground excavation stations of subways, comprising a base body, a mounting shell is fixedly installed on the front side of the base body near the top, a collector is arranged on the front side of the mounting shell, and a mounting assembly is arranged in the inner cavity of the mounting shell, a column is installed at the bottom of the base body, a plurality of protective shells are installed on the outer periphery of the column, connecting blocks B are fixedly installed near the top and bottom of the inner cavity of the protective shell, and strain rods are commonly arranged on the front side of the connecting block B, a coil is arranged on the outer periphery of the strain rod, and a cable is fixedly installed on the bottom of the coil, and the bottom end of the cable movably passes through the inner cavity of the protective shell, and the front side of the connecting block B is hinged with a connecting block A.

[0007] Furthermore, a plurality of the protective shells are arranged in a circular array with the bottom of the column as the center.

[0008] Furthermore, a rectangular block is fixedly installed on one side of the connecting block B, a connecting strip is fixedly installed on the front side of the rectangular block, a fixed block is fixedly installed on one side of the connecting block A, a mounting block is fixedly installed on one side of the fixed block, and a sliding block is provided at the bottom of the mounting block, the sliding block is slidably connected to the connecting block A, a toggle block is fixedly installed on one side of the sliding block, an insert block is fixedly installed on the bottom of the sliding block, a slot is opened on the top of the connecting strip, and the bottom end of the insert block is movably inserted in the inner cavity of the slot.

[0009] Furthermore, a telescopic rod A is fixedly installed on one side of the mounting block and the sliding block near the front and rear sides, and a spring A is movably sleeved on the outer periphery of the telescopic rod A, and the top and bottom ends of the spring A are fixedly connected to the mounting block and the sliding block respectively.

[0010] Furthermore, the connecting strip and the opposite side of the insert block are both arc-shaped.

[0011] Furthermore, the bottom ends of the cables are electrically connected to the collector.

[0012] Furthermore, the mounting assembly includes an L-shaped plate fixedly installed on the rear side of the collector near the top and a convex plate fixedly installed at the bottom of the L-shaped plate, a telescopic rod B is fixedly installed near the bottom on the opposite side of the inner cavity of the mounting shell, a T-shaped block is fixedly installed on the opposite end of the telescopic rod B, and the bottom of the T-shaped block is respectively arranged to fit together with the adjacent convex plate, a spring B is movably sleeved on the outer periphery of the telescopic rod B, and the two ends of the spring B are respectively fixedly connected to the T-shaped block and the side wall of the inner cavity of the mounting shell.

[0013] Furthermore, trapezoidal sliders are fixedly installed near both sides of the rear side of the collector, trapezoidal slide grooves are opened near both sides of the front side of the mounting shell, and the trapezoidal sliders are slidably connected in the inner cavity of the trapezoidal slide grooves.

[0014] Furthermore, a vertical rod is fixedly installed on the top of the T-shaped block, a movable block is fixedly installed on the top of the vertical rod, a hinged rod is hinged on the top of the movable block, a pressing plate is hinged at the opposite end of the hinged rod, a telescopic rod C is fixedly installed on the bottom of the pressing plate near both sides, the bottom end of the telescopic rod C is fixedly connected to the top of the mounting shell, a spring C is movably sleeved on the outer periphery of the telescopic rod C, and the two ends of the spring C are respectively fixedly connected to the mounting shell and the pressing plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When monitoring the column, the stress of the column can be monitored in time by setting the strain rod, coil, cable, connection block A and collector, without the need for workers to watch with the naked eye, thus reducing the work intensity of the workers and improving the accuracy of monitoring the column.

[0017] 2. When limiting the position of the strain rod, by setting the mounting block, telescopic rod A, sliding block, spring A and toggle block, the plug block can be inserted into the inner cavity of the slot, which is convenient for installing the strain rod and can improve the installation efficiency of the strain rod.

[0018] 3. When installing the collector, the collector can be slidably installed on the front side of the installation shell. When the installation shell moves downward, the T-shaped block can be placed on the top of the convex plate, which is convenient for the installation of the collector and reduces the work intensity of the staff. By setting the pressing plate, the hinged rod and the movable block, the limit of the convex plate can be released through the vertical rod, which is convenient for releasing the limit of the convex plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of a partially cutaway three-dimensional structure of a protective shell and a column of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting block A and the connecting block B of the present invention;

[0022] Figure 4 It is an exploded view of the fixed shell, L-shaped plate and collector of the present invention;

[0023] Figure 5 For the present invention Figure 3 Enlarged view of point A in the middle;

[0024] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0025] Figure 7 For the present invention Figure 4 Enlarged view of point C in the middle.

[0026] In the figure: 1. base body; 2. collector; 3. column; 4. protective shell; 5. strain rod; 6. coil; 7. cable; 8. connection block A; 9. connection block B; 10. rectangular block; 11. connection strip; 12. fixed block; 13. mounting block; 14. telescopic rod A; 15. sliding block; 16. spring A; 17. toggle block; 18. plug-in block; 19. slot; 20. mounting shell; 21. L-shaped plate; 22. convex plate; 23. trapezoidal slider; 24. trapezoidal slide; 25. telescopic rod B; 26. spring B; 27. T-shaped block; 28. vertical rod; 29. ​​movable block; 30. pressing plate; 31. hinged rod; 32. telescopic rod C; 33. spring C. DETAILED DESCRIPTION

[0027] 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.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] The purpose of this embodiment is to provide an automatic stress monitoring device for steel pipe columns in underground excavation stations of subways, including a base body 1, a mounting shell 20 is fixedly installed near the top of the front side of the base body 1, a collector 2 is arranged on the front side of the mounting shell 20, and an installation component is arranged in the inner cavity of the mounting shell 20, (when the collector 2 has a built-in analog measurement module, it can measure vibrating string instruments, differential resistance instruments, standard voltage and current signals, various standard transmitter instruments, and linear potentiometer instruments. The module itself has 8 / 16 measurement channels, which can form the most basic 8 / 16 channel measurement system. Each channel can be connected to a standard instrument, and by installing multiple A measurement module can measure up to 40 channels. When the intelligent measurement module is built in, it can measure various intelligent sensors with RS485 output. The module itself has 8 ports, each of which can be connected to multiple RS485 output sensors. The maximum number of connected sensors is 40, and the sum of the number of sensors connected to all ports is not more than 40.) A column 3 is installed at the bottom of the base body 1, and several protective shells 4 are installed on the periphery of the column 3. (For construction safety and not affecting the construction progress, the sensor is installed before the column 3 is hoisted. Before installation, fully communicate with the construction unit to fully understand the installation position of the column 3. According to the position of the column 3, the sensor can be installed. Clean the surface near the installation point, weld the designated numbered sensor to the surface of the steel pipe column according to the arrangement of the measurement points in the monitoring plan, and pay attention to not stopping the water cooling during the welding process to prevent the strain rod 5 from being damaged) The inner cavity of the protective shell 4 is fixedly installed with a connection block B9 near the top and bottom, and the front side of the connection block B9 is jointly provided with a strain rod 5, (the strain rod 5 is used to be installed on the surface of steel structures and other buildings to measure the strain of the structure. The instrument has the same temperature expansion coefficient as the steel structure to be measured. The built-in temperature sensor can simultaneously monitor the temperature of the installation position. The vibrating wire strain gauge made of stainless steel has high accuracy and sensitivity, excellent Waterproof performance, corrosion resistance and long-term stability, the frequency and temperature resistance signals are transmitted by a special four-core shielded cable. The frequency signal is not affected by the cable length and is suitable for long-term monitoring of strain changes in buildings in harsh environments) The outer periphery of the strain rod 5 is provided with a coil 6, and a cable 7 is fixedly installed at the bottom of the coil 6, and the bottom end of the cable 7 is movable through the inner cavity of the protective shell 4, and the front side of the connecting block B9 is hinged with a connecting block A8. The cable 7 is tied with a knot and a certain redundancy is left, and it passes through the pre-prepared perforated iron protective shell. Gently pull the cable 7 to ensure that the wire knot is stuck on the inside of the reserved hole during the pulling process, and it can withstand a certain external force. Since the connection between the cable 7 and the coil 6 is a weak point and is easily damaged, this measure can avoid the failure of the monitoring point caused by the direct external force at the connection.

[0030] Specifically, when monitoring the column 3, the stress of the column 3 can be monitored in time by setting the strain rod 5, the coil 6, the cable 7, the connecting block A8 and the collector 2, without the need for the staff to observe with the naked eye, thereby reducing the work intensity of the staff and improving the accuracy of monitoring the column 3.

[0031] A plurality of protective shells 4 are arranged in a circular array with the bottom of the column 3 as the center.

[0032] Specifically, the protective shell 4 can be used to protect the strain rod 5 , and multiple strain rods 5 can be used to accurately and timely monitor the column 3 , thereby improving the accuracy of the monitoring data.

[0033] A rectangular block 10 is fixedly installed on one side of the connecting block B9, a connecting strip 11 is fixedly installed on the front side of the rectangular block 10, a fixed block 12 is fixedly installed on one side of the connecting block A8, a mounting block 13 is fixedly installed on one side of the fixed block 12, and a sliding block 15 is provided at the bottom of the mounting block 13, the sliding block 15 is slidably connected to the connecting block A8, a toggle block 17 is fixedly installed on one side of the sliding block 15, an insert block 18 is fixedly installed at the bottom of the sliding block 15, a slot 19 is opened on the top of the connecting strip 11, and the bottom end of the insert block 18 is movably inserted in the inner cavity of the slot 19.

[0034] Specifically, when limiting the strain rod 5, by setting the mounting block 13, the telescopic rod A14, the sliding block 15, the spring A16 and the toggle block 17, the insert block 18 can be inserted into the inner cavity of the slot 19, which facilitates the installation of the strain rod 5 and can improve the installation efficiency of the strain rod 5.

[0035] A telescopic rod A14 is fixedly installed on the opposite side of the mounting block 13 and the sliding block 15 near the front and rear sides, and a spring A16 is movably sleeved on the outer periphery of the telescopic rod A14, and the top and bottom ends of the spring A16 are fixedly connected to the mounting block 13 and the sliding block 15 respectively, and the opposite side of the connecting strip 11 and the plug block 18 are both arc-shaped.

[0036] Specifically, by providing the telescopic rod A14 and the spring A16, the insert block 18 can be stably inserted into the inner cavity of the slot 19.

[0037] The bottom ends of the cables 7 are electrically connected to the data collector 2 , and the cables 7 are electrically connected to the coil 6 . When the strain rod 5 is deformed, the data can be displayed on the data collector 2 in a timely manner through the cables 7 .

[0038] The mounting assembly includes an L-shaped plate 21 fixedly mounted on the rear side of the collector 2 near the top and a convex plate 22 fixedly mounted on the bottom of the L-shaped plate 21. A telescopic rod B25 is fixedly mounted near the bottom on the opposite side of the inner cavity of the mounting shell 20. A T-shaped block 27 is fixedly mounted on the opposite end of the telescopic rod B25, and the bottom of the T-shaped block 27 is respectively fitted with the adjacent convex plate 22. The opposite side of the convex plate 22 and the T-shaped block 27 is arc-shaped. A spring B26 is movably sleeved on the outer periphery of the telescopic rod B25, and the two ends of the spring B26 are respectively fixedly connected to the T-shaped block 27 and the side wall of the inner cavity of the mounting shell 20.

[0039] Specifically, when installing the collector 2, the collector 2 can be slidably installed on the front side of the installation shell 20. When the installation shell 20 moves downward, the T-shaped block 27 can be placed on the top of the raised plate 22, thereby facilitating the installation of the collector 2 and reducing the work intensity of the staff.

[0040] Trapezoidal sliders 23 are fixedly installed near both sides of the rear side of the collector 2, and trapezoidal slide grooves 24 are opened near both sides of the front side of the installation shell 20, and the trapezoidal sliders 23 are slidably connected in the inner cavities of the trapezoidal slide grooves 24 respectively.

[0041] Specifically, the installation of the collector 2 can be facilitated by providing the trapezoidal sliding block 23 and the trapezoidal sliding groove 24 .

[0042] A vertical rod 28 is fixedly installed on the top of the T-shaped block 27, a movable block 29 is fixedly installed on the top of the vertical rod 28, a hinged rod 31 is hinged on the top of the movable block 29, a pressing plate 30 is hinged at the opposite end of the hinged rod 31, a telescopic rod C32 is fixedly installed on the bottom of the pressing plate 30 near both sides, the bottom end of the telescopic rod C32 is fixedly connected to the top of the mounting shell 20, a spring C33 is movably sleeved on the outer periphery of the telescopic rod C32, and the two ends of the spring C33 are respectively fixedly connected to the mounting shell 20 and the pressing plate 30.

[0043] Specifically, by providing the pressing plate 30 , the hinge rod 31 , and the movable block 29 , the limit on the convex plate 22 can be released through the vertical rod 28 , thereby facilitating the release of the limit on the convex plate 22 .

[0044] In summary, the working principle of the present invention is as follows: a group is provided below the bottom surface of the top longitudinal beam of the column 3, below the bottom surface of the middle longitudinal beam, about 0.5m above the top surface of the bottom longitudinal beam, and in the middle position of each layer of the steel pipe column of the station, and each group is evenly arranged at 90 degrees in the longitudinal and transverse directions of the station on the steel pipe column. When the strain rod 5 needs to be installed, the two ends of the strain rod 5 can be placed in the inner cavity of the adjacent semicircular holes, and then the connecting block A8 is flipped so that the semicircular holes on the connecting block A8 are located on the outer periphery of the strain rod 5. During the flipping process, since the slot 19 and the opposite side of the connecting strip 11 are both arc-shaped, the connecting strip 11 is connected to the connecting strip 11. When in contact with the fixed block 12, the plug block 18 can be inserted into the inner cavity of the adjacent slot 19, and the plug block 18 can be stably inserted into the inner cavity of the slot 19 through the telescopic rod A14 and the spring A16, thereby improving the stability of the connection between the connecting block A8 and the connecting block B9, thereby improving the installation efficiency of the strain rod 5. When monitoring the column 3, the stress of the column 3 can be monitored in time by setting the strain rod 5, the coil 6, the cable 7, the connecting block A8 and the collector 2, without the need for the staff to watch with the naked eye, thereby reducing the work intensity of the staff and improving the accuracy of monitoring the column 3.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic stress monitoring device for steel pipe columns in underground excavation stations of subways, comprising a base body (1), characterized in that: A mounting shell (20) is fixedly installed on the front side of the base body (1) near the top, a collector (2) is arranged on the front side of the mounting shell (20), and a mounting assembly is arranged in the inner cavity of the mounting shell (20), a column (3) is installed at the bottom of the base body (1), a plurality of protective shells (4) are installed on the outer periphery of the column (3), a connecting block B (9) is fixedly installed near the top and bottom of the inner cavity of the protective shell (4), a strain rod (5) is arranged on the front side of the connecting block B (9), a coil (6) is arranged on the outer periphery of the strain rod (5), a cable (7) is fixedly installed at the bottom of the coil (6), and the bottom end of the cable (7) movably passes through the inner cavity of the protective shell (4), and a connecting block A (8) is hinged on the front side of the connecting block B (9).

2. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 1 is characterized by: A plurality of the protective shells (4) are arranged in a circular array with the bottom of the column (3) as the center.

3. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 1 is characterized by: A rectangular block (10) is fixedly mounted on one side of the connecting block B (9), a connecting strip (11) is fixedly mounted on the front side of the rectangular block (10), a fixed block (12) is fixedly mounted on one side of the connecting block A (8), a mounting block (13) is fixedly mounted on one side of the fixing block (12), a sliding block (15) is arranged at the bottom of the mounting block (13), the sliding block (15) is slidably connected to the connecting block A (8), a toggle block (17) is fixedly mounted on one side of the sliding block (15), an insert block (18) is fixedly mounted at the bottom of the sliding block (15), a slot (19) is provided at the top of the connecting strip (11), and the bottom end of the insert block (18) is movably inserted into the inner cavity of the slot (19).

4. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 3 is characterized by: A telescopic rod A (14) is fixedly mounted on one side of the mounting block (13) and the sliding block (15) near the front and rear sides, and a spring A (16) is movably sleeved on the outer circumference of the telescopic rod A (14), and the top and bottom ends of the spring A (16) are fixedly connected to the mounting block (13) and the sliding block (15) respectively.

5. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 3 is characterized by: The connecting strip (11) and the inserting block (18) have opposite sides that are both arranged in an arc shape.

6. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 1 is characterized by: The bottom ends of the cables (7) are electrically connected to the collector (2).

7. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 1 is characterized by: The mounting assembly comprises an L-shaped plate (21) fixedly mounted on the rear side of the collector (2) near the top and a convex plate (22) fixedly mounted on the bottom of the L-shaped plate (21); a telescopic rod B (25) is fixedly mounted on the opposite side of the inner cavity of the mounting shell (20) near the bottom; a T-shaped clamping block (27) is fixedly mounted on the opposite end of the telescopic rod B (25); the bottom of the T-shaped clamping block (27) is respectively arranged to fit the adjacent convex plate (22); a spring B (26) is movably sleeved on the outer periphery of the telescopic rod B (25); and the two ends of the spring B (26) are respectively fixedly connected to the T-shaped clamping block (27) and the inner cavity side wall of the mounting shell (20).

8. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 7 is characterized by: Trapezoidal sliders (23) are fixedly installed near both sides of the rear side of the collector (2), and trapezoidal slide grooves (24) are opened near both sides of the front side of the installation shell (20), and the trapezoidal sliders (23) are slidably connected in the inner cavities of the trapezoidal slide grooves (24).

9. The automatic stress monitoring device for steel pipe columns in underground excavation stations of claim 7 is characterized by: A vertical rod (28) is fixedly mounted on the top of each T-shaped block (27), a movable block (29) is fixedly mounted on the top of each vertical rod (28), a hinged rod (31) is hingedly mounted on the top of each movable block (29), a pressing plate (30) is hingedly mounted on the opposite ends of the hinged rod (31), a telescopic rod C (32) is fixedly mounted on the bottom of each pressing plate (30) near both sides, the bottom ends of the telescopic rods C (32) are fixedly connected to the top of the mounting shell (20), a spring C (33) is movably sleeved on the outer periphery of the telescopic rod C (32), and two ends of the spring C (33) are respectively fixedly connected to the mounting shell (20) and the pressing plate (30).

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