Mechanical sensor for detecting full life cycle of bridge expansion joint

Abstract

The utility model discloses a mechanical sensor for detecting the full life cycle of a bridge expansion joint. The mechanical sensor comprises a bridge pier, according to the mechanical sensor for detecting the full life cycle of the bridge expansion joint, through cooperative use of the mounting mechanism, an insertion rod is inserted into a preformed hole of a bridge pier in the use process of the mechanical sensor, and then the position of the insertion rod is locked by using a first bolt and a nut, so that the installation work of a crack meter is achieved; an inserting block is inserted into an inserting groove in a frame plate, a limiting rod is movably connected with a baffle, the baffle is rotated, so that the baffle limits the front face of the accelerometer, the baffle is connected with the frame plate through a second bolt, the accelerometer is installed, and the embedded concrete strain gauge installed in a bridge pier is matched, so that the accelerometer can be installed. The data consistency and the detection precision of bridge detection and monitoring are effectively improved, the health condition and the life cycle of the bridge are conveniently and comprehensively evaluated, and meanwhile the workload of follow-up sensor maintenance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical sensors, and particularly relates to a mechanical sensor for detecting the whole life cycle of a bridge expansion joint. Background Technique

[0002] Mechanical sensors are sensors used to measure physical quantities such as force, pressure, torque, and strain. They play an important role in bridge detection and can be used to monitor the structural health of bridges. Common mechanical sensors include strain gauges, pressure sensors, force sensors, and torque sensors, etc.

[0003] Existing mechanical sensors need to be combined with accelerometers, pull-rod crack gauges, noise sensors, etc. to monitor and detect bridges in order to comprehensively evaluate the health status and life cycle of bridges. However, most of these sensors are distributed at different positions on the bridge from the mechanical sensors, reducing the data consistency and detection accuracy of bridge detection and monitoring, and at the same time increasing the workload of subsequent maintenance. Therefore, it is necessary to propose a mechanical sensor for detecting the whole life cycle of a bridge expansion joint. Content of the Utility Model

[0004] The purpose of the utility model is to provide a mechanical sensor for detecting the whole life cycle of a bridge expansion joint to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A mechanical sensor for detecting the whole life cycle of a bridge expansion joint, including a bridge pier, a fixed rod is fixedly connected to the outer wall of the bridge pier, one end of the fixed rod is fixedly connected to a frame plate, a noise sensor is movably connected inside the frame plate, an installation mechanism is movably connected inside the frame plate, and a storage mechanism is fixedly connected to the outer wall of the frame plate;

[0006] The installation mechanism includes a plug rod, a ring body, a crack gauge, a first bolt, a nut, a plug block, an accelerometer, a limiting rod, a baffle plate, and a second bolt. A plug rod is movably connected inside the bridge pier, a ring body is movably connected to the outer wall of the plug rod, a crack gauge is fixedly connected to the outer wall of the ring body, a first bolt is movably connected inside the plug rod, a nut is movably connected to the outer wall of the first bolt, a plug block is movably connected inside the frame plate, an accelerometer is fixedly connected to one side of the plug block, a limiting rod is fixedly connected to the front of the frame plate, a baffle plate is movably connected to the outer wall of the limiting rod, and a second bolt is movably connected inside the baffle plate.

[0007] Preferably, the first bolt penetrates through the inside of the plug rod and extends to both sides of the frame plate, and the first bolt is movably connected to the plug rod and the frame plate.

[0008] Preferably, slots are formed inside the frame plate, and the shapes and sizes of the slots match those of the insertion blocks.

[0009] Preferably, through holes are movably connected inside the baffle, and the shapes and sizes of the through holes match those of the limiting rods.

[0010] Preferably, the storage mechanism includes a fixed cylinder, a spring, a rod body, a movable cylinder, a wire inlet groove, and a wire outlet groove. The front surface of the frame plate is fixedly connected with the fixed cylinder, the front surface of the frame plate is fixedly connected with the spring, one end of the spring is fixedly connected with the rod body, one end of the rod body is movably connected with the movable cylinder, the outer wall of the movable cylinder is provided with the wire inlet groove, and the outer wall of the movable cylinder is provided with the wire outlet groove.

[0011] Preferably, a bearing is fixedly connected to the inner top wall of the movable cylinder, and the movable cylinder is movably connected with the rod body through the bearing.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For this mechanical sensor for detecting the full life cycle of bridge expansion joints, through the coordinated use of the installation mechanism, during the use of this mechanical sensor, the insertion rod is inserted into the reserved hole of the bridge pier, and then the position of the insertion rod is locked by using the first bolt and nut to complete the installation of the crack gauge. Then, the insertion block is inserted into the slot inside the frame plate. Through the movable connection between the limiting rod and the baffle, the baffle is rotated to limit the front surface of the accelerometer, and then the baffle is connected to the frame plate by using the second bolt to complete the installation of the accelerometer. In cooperation with the embedded concrete strain gauge installed inside the bridge pier, it effectively improves the data consistency and detection accuracy of bridge detection and monitoring, facilitates a comprehensive assessment of the health status and life cycle of the bridge, and at the same time reduces the workload of subsequent sensor maintenance, thereby improving the practicality of this mechanical sensor to a certain extent;

[0014] 2. For this mechanical sensor for detecting the full life cycle of bridge expansion joints, through the setting of the storage mechanism, during the use of this mechanical sensor, by pulling the movable cylinder, through the connection of the rod body, the spring is driven to stretch, and then the cables connected to the crack gauge and the accelerometer are wound around the outer wall of the fixed cylinder for winding work. After winding to an appropriate length, the movable cylinder is released, and the elastic force of the spring is restored, driving the movable cylinder to wrap the cable, improving the protection effect on the cable and indirectly improving the protection effect on these sensors, thereby improving the applicability of this mechanical sensor to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2Schematic diagram of the overall structure of the utility model;

[0017] Figure 3 Schematic diagram of the installation mechanism structure of the utility model;

[0018] Figure 4 Schematic diagram of the split structure of the storage mechanism of the utility model.

[0019] In the figure: 1, pier; 2, fixed rod; 3, frame plate; 4, noise sensor; 5, installation mechanism; 501, insertion rod; 502, ring body; 503, crack gauge; 504, first bolt; 505, nut; 506, insertion block; 507, accelerometer; 508, limiting rod; 509, baffle; 510, second bolt; 6, storage mechanism; 601, fixed cylinder; 602, spring; 603, rod body; 604, movable cylinder; 605, wire inlet groove; 606, wire outlet groove. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a mechanical sensor for detecting the whole life cycle of a bridge expansion joint, including a pier 1, a fixed rod 2 fixedly connected to the outer wall of the pier 1, a frame plate 3 fixedly connected to one end of the fixed rod 2, a noise sensor 4 movably connected inside the frame plate 3, an installation mechanism 5 movably connected inside the frame plate 3, and a storage mechanism 6 fixedly connected to the outer wall of the frame plate 3;

[0022] The installation mechanism 5 includes a plug rod 501, a ring body 502, a crack gauge 503, a first bolt 504, a nut 505, a plug block 506, an accelerometer 507, a limiting rod 508, a baffle 509 and a second bolt 510. The plug rod 501 is movably connected inside the pier 1, the outer wall of the plug rod 501 is movably connected with the ring body 502, the outer wall of the ring body 502 is fixedly connected with the crack gauge 503, the first bolt 504 is movably connected inside the plug rod 501, the first bolt 504 penetrates through the inside of the plug rod 501 and extends to both sides of the frame plate 3, and the first bolt 504 is movably connected with the plug rod 501 and the frame plate 3, which is convenient for installing and locking the crack gauge 503 and facilitating subsequent maintenance and repair work. The outer wall of the first bolt 504 is movably connected with the nut 505. The plug block 506 is movably connected inside the frame plate 3, and a slot is provided inside the frame plate 3. The shape and size of the slot are both matched with the shape and size of the plug block 506, which is convenient for the quick docking of the plug block 506 and the frame plate 3 and facilitates the installation work of the accelerometer 507. One side of the plug block 506 is fixedly connected with the accelerometer 507. The limiting rod 508 is fixedly connected to the front of the frame plate 3, the outer wall of the limiting rod 508 is movably connected with the baffle 509, a through hole is movably connected inside the baffle 509, and the shape and size of the through hole are both matched with the shape and size of the limiting rod 508, which is convenient for adjusting the angle of the baffle 509 to achieve the locking and unlocking of the accelerometer 507. The second bolt 510 is movably connected inside the baffle 509.

[0023] Please refer to Figures 1-4 , the storage mechanism 6 includes a fixed cylinder 601, a spring 602, a rod body 603, a movable cylinder 604, a cable inlet groove 605 and a cable outlet groove 606. The fixed cylinder 601 is fixedly connected to the front of the frame plate 3, the spring 602 is fixedly connected to the front of the frame plate 3, one end of the spring 602 is fixedly connected with the rod body 603, one end of the rod body 603 is movably connected with the movable cylinder 604, and a bearing is fixedly connected to the inner top wall of the movable cylinder 604. The movable cylinder 604 is movably connected with the rod body 603 through the bearing, which is convenient for adjusting the angle of the movable cylinder 604 and facilitating the correspondence between the cable inlet groove 605 and the cable outlet groove 606 and the two ends of the cable. The cable inlet groove 605 is provided on the outer wall of the movable cylinder 604, and the cable outlet groove 606 is provided on the outer wall of the movable cylinder 604.

[0024] Working principle: When using the mechanical sensor for detecting the full life cycle of the bridge expansion joint, first insert the insertion rod 501 into the reserved hole of the bridge pier 1, and then use the first bolt 504 and the nut 505 to lock the position of the insertion rod 501 to complete the installation of the crack gauge 503. Then insert the insertion block 506 into the slot inside the frame plate 3. Through the movable connection between the limiting rod 508 and the baffle 509, rotate the baffle 509 so that the baffle 509 limits the front of the accelerometer 507, and then use the second bolt 510 to connect the baffle 509 to the frame plate 3 to complete the installation of the accelerometer 507. Then pull the movable cylinder 604. Through the connection of the rod body 603, drive the stretching of the spring 602. Then wind the cables connected to the crack gauge 503 and the accelerometer 507 around the outer wall of the fixed cylinder 601 for winding work. After winding to an appropriate length, rotate the movable cylinder 604 so that the wire inlet groove 605 and the wire outlet groove 606 of the movable cylinder 604 respectively correspond to both ends of the wound cable. Then release the movable cylinder 604, and the elastic force of the spring 602 is restored, driving the movable cylinder 604 to wrap the cable, improving the protection effect on the cable. At the same time, in cooperation with the embedded concrete strain gauge installed inside the bridge pier 1 and the noise sensor 4 installed inside the frame plate 3, it effectively improves the data consistency and detection accuracy of bridge detection and monitoring, facilitating a comprehensive assessment of the health status and life cycle of the bridge. Just like this, the use process of the mechanical sensor for detecting the full life cycle of the bridge expansion joint is completed.

[0025] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mechanical sensor for detecting the full life cycle of a bridge expansion joint, comprising a bridge pier (1), characterized in that: The outer wall of the pier (1) is fixedly connected to a fixing rod (2), one end of the fixing rod (2) is fixedly connected to a frame plate (3), the interior of the frame plate (3) is movably connected to a noise sensor (4), the interior of the frame plate (3) is movably connected to a mounting mechanism (5), and the outer wall of the frame plate (3) is fixedly connected to a storage mechanism (6); The installation mechanism (5) comprises a rod (501), a ring body (502), a crack meter (503), a first bolt (504), a nut (505), an insert (506), an accelerometer (507), a limit rod (508), a baffle (509) and a second bolt (510); the inside of the pier (1) is movably connected to the rod (501); the outer wall of the rod (501) is movably connected to the ring body (502); the outer wall of the ring body (502) is fixedly connected to the crack meter (503); the rod The interior of (501) is movably connected to a first bolt (504), the outer wall of the first bolt (504) is movably connected to a nut (505), the interior of the frame plate (3) is movably connected to an insert block (506), one side of the insert block (506) is fixedly connected to an accelerometer (507), the front side of the frame plate (3) is fixedly connected to a limit rod (508), the outer wall of the limit rod (508) is movably connected to a baffle (509), and the interior of the baffle (509) is movably connected to a second bolt (510).

2. A mechanical sensor for detecting the full life cycle of a bridge expansion joint according to claim 1, characterized in that: The first bolt (504) passes through the interior of the insertion rod (501) and extends to both sides of the frame plate (3); the first bolt (504) is movably connected to the insertion rod (501) and the frame plate (3).

3. A mechanical sensor for detecting the entire life cycle of a bridge expansion joint according to claim 1, characterized in that: A slot is provided inside the frame plate (3), and the shape and size of the slot match the shape and size of the insert block (506).

4. The mechanical sensor for detecting the full life cycle of a bridge expansion joint according to claim 1 is characterized in that: The baffle (509) is movably connected with a through hole inside, and the shape and size of the through hole match the shape and size of the limiting rod (508).

5. The mechanical sensor for detecting the full life cycle of a bridge expansion joint according to claim 1 is characterized in that: The storage mechanism (6) comprises a fixed cylinder (601), a spring (602), a rod body (603), a movable cylinder (604), an inlet groove (605) and an outlet groove (606); the front side of the frame plate (3) is fixedly connected to the fixed cylinder (601); the front side of the frame plate (3) is fixedly connected to the spring (602); one end of the spring (602) is fixedly connected to the rod body (603); one end of the rod body (603) is movably connected to the movable cylinder (604); an outer wall of the movable cylinder (604) is provided with an inlet groove (605); and an outer wall of the movable cylinder (604) is provided with an outlet groove (606).

6. A mechanical sensor for detecting the entire life cycle of a bridge expansion joint according to claim 5, characterized in that: A bearing is fixedly connected to the inner top wall of the movable cylinder (604), and the movable cylinder (604) is movably connected to the rod body (603) via the bearing.

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