Bridge vibration monitoring device

Abstract

The utility model discloses a bridge vibration monitoring device, which relates to the technical field of bridge equipment, and comprises a fixed rod vertically and fixedly connected to a bridge, and a plurality of clamping grooves are formed in the periphery of the fixed rod; the sliding sleeve is slidably connected to the fixed rod in a suspended manner; the limiting check block comprises a clamping block, the clamping block is horizontally and elastically clamped with the clamping grooves to fix the height position, the clamping block moves between the different clamping grooves, and the limiting check block is located above the sliding sleeve and is pushed by the sliding sleeve to move. The bridge vibration monitoring device can adapt to old bridges, mechanically and visually monitors bridge vibration, avoids electric connection, and improves the adaptability and practicability of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge equipment, and particularly relates to a bridge vibration monitoring device. Background Art

[0002] A bridge is an overhead passage built to span rivers, valleys, obstacles or other traffic lines. During the bridge construction process, it is necessary to use a vibration monitoring device to monitor parameters such as the vibration of the bridge in real time and timely feedback the monitoring information to relevant monitoring personnel to ensure the safety of bridge construction and prevent the occurrence of dangerous events. In the prior art, modern bridges are generally equipped with vibration monitoring devices. However, old bridges are generally composed of bridge girders, bridge decks, bridge bottom supports and other structures. Due to the problems of the times, they are not equipped with bridge vibration monitoring devices. Therefore, existing traditional devices cannot be adapted to old beam bridges, and it is impossible to pre-monitor their girders and give warnings. Content of the Utility Model

[0003] Technical Problem to be Solved by the Utility Model

[0004] Aiming at the technical problem that it is difficult to install and adapt a vibration monitoring device for old bridges, the utility model provides a bridge vibration monitoring device, which can be adapted to old bridges, mechanically and intuitively monitor the vibration of the bridge, avoid electrical connection, and improve the adaptability and practicability of the device.

[0005] Technical Solution

[0006] To solve the above problems, the technical solution provided by the utility model is as follows:

[0007] A bridge vibration monitoring device includes a fixed rod vertically and fixedly connected to the bridge, and a plurality of card slots are arranged on its body; a sliding sleeve is slidably connected to the fixed rod in a suspended manner; a limit stop block includes a clamping block, and the clamping block is horizontally and elastically clamped with the card slots to fix the height position. The clamping block moves between different card slots, and the limit stop block is located above the sliding sleeve and is pushed by the sliding sleeve to move.

[0008] The fixed rod is vertically mounted on the bridge and serves as the support structure for the entire monitoring system. The block in the limit stop works in conjunction with the slot on the fixed rod to lock the sliding sleeve at a specific height. The suspended sliding sleeve allows workers to directly detect the inertial force generated by bridge deck vibrations, while the limit stop facilitates visual observation of the bridge deck's vibration amplitude. The fixed rod transmits vibrations and connects to the sliding sleeve, allowing it to suspend. When the bridge vibrates, the fixed rod vibrates with it, causing the suspended sliding sleeve to slide up and down along the fixed rod. The limit stop is pushed by the sliding sleeve and moves. At its highest point, the block engages with the slot, securing it there and preventing it from falling. This records the peak vibration point, facilitating visual observation of the bridge deck's vibration amplitude. The block elastically engages horizontally with the slot to secure its height. The inertial force generated by bridge deck vibrations causes the block to move between the slots until it locks in place at its highest point.

[0009] Optionally, an elastic element is connected below the sliding sleeve, and the elastic force of the elastic element balances the downward force applied to the sliding sleeve.

[0010] The sliding sleeve is subjected to balanced forces up and down, and can be suspended and stationary on the fixed rod when the bridge is not vibrating. The sliding sleeve is subjected to the combined force of gravity and the pressure of the limit block downward, and the elastic force of the elastic element upward, thus achieving balance.

[0011] Optionally, the side walls of the card slot are inclined, and the upper and lower surfaces of the card block are inclined, so that the card block is subjected to a horizontal thrust from the card slot when sliding up and down.

[0012] When the card block moves between different card slots, it will not get stuck due to the inclined side walls of the card slot and the inclined upper and lower surfaces of the card block. The inclined surface will convert the vertical movement into a horizontal thrust on the card block, and the card block will be pushed out of the card slot, thereby realizing movement between the card slots.

[0013] Optionally, the clamping block is horizontally slidably connected to the limit block, and an elastic member is connected between the clamping block and the limit block.

[0014] The clamping block is engaged with the clamping slot to realize vertical limit of the limit block, and the limit block is fixed after the engagement. The elastic member is used to push the clamping block into the clamping slot so that the clamping block and the clamping slot are tightly engaged to realize limit.

[0015] Optionally, the contact surface between the card slot and the card block is a V-shaped structure.

[0016] The side walls of the V-shaped structure are inclined, which meets the requirements of the up and down movement of the card block and can provide good horizontal clamping force.

[0017] Optionally, the contact surface between the card slot and the card block is a wave-shaped structure.

[0018] The side walls of the wave-shaped structure are inclined, which meets the horizontal engagement requirements of the card block and reduces the resistance to movement, making the up and down movement smoother.

[0019] Optionally, the fixing rod is fixed to a connecting plate, an I-beam is fixed below the connecting plate, and both the connecting plate and the I-beam are buried in the bridge.

[0020] The fixing rods are securely mounted on the bridge and can withstand the various forces that may occur during monitoring. The I-shaped rods, along with the connecting plates, are embedded within the bridge, increasing the stability and reliability of the entire monitoring system. This also improves the accuracy of bridge vibration monitoring. Even small vibrations from the bridge are transmitted through the tightly connected fixing rods, triggering the movement of the sliding sleeve and limit stop, resulting in more sensitive monitoring.

[0021] Optionally, the card block is a symmetrical bilateral structure.

[0022] The symmetrical, double-sided design of the clamp means it has two opposing contact surfaces, both of which mate with the slots on the mounting rod. This double-sided contact provides better support and stability, reducing the tilt or wobble that can occur with a single-sided contact.

[0023] Beneficial effects

[0024] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0025] The technical solution provided by the present invention provides a suspended sliding sleeve and a limit block. The fixed rod is used to transmit vibration and is connected to the sliding sleeve, allowing the sliding sleeve to be suspended. When the bridge vibrates, the fixed rod will vibrate accordingly, and the suspended sliding sleeve will slide up and down along the fixed rod. The limit block is pushed by the sliding sleeve to move, and at the highest point, it is fixed at the highest point by the engagement of the block and the slot, preventing it from falling, thereby recording the highest point of the vibration and facilitating the visual observation of the amplitude of the bridge deck by staff. The block and the slot are elastically engaged horizontally to fix the height position. The inertial force generated by the vibration of the bridge deck causes the block to move between the different slots until it is engaged and fixed at the highest point. Staff can directly detect the inertial force generated by the vibration of the bridge deck, and the provision of the limit block facilitates the visual observation of the amplitude of the bridge deck by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a bridge vibration monitoring device proposed in an embodiment of the present utility model;

[0027] Figure 2A sectional view of a bridge vibration monitoring device proposed in an embodiment of the present utility model;

[0028] Figure 3 A bridge vibration monitoring device proposed in an embodiment of the present utility model Figure 1 Schematic diagram of the partial structure at position A;

[0029] 1. Bridge deck; 2. Connecting plate; 3. I-beam; 4. Fixed rod; 5. Stopper; 6. Sliding sleeve; 7. Counterweight; 8. First spring; 9. Card slot; 10. Limit stopper; 11. Fixed bracket; 12. Telescopic rod; 13. Limit block; 14. Connecting block; 15. Second spring; 16. Clamping block; 17. Upper inclined surface; 18. Lower inclined surface. Specific implementation mode

[0030] To further understand the content of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings and embodiments.

[0031] Embodiment 1

[0032] Combined with the attached Figure 1 , 2 , a bridge vibration monitoring device includes a connecting plate 2, a fixed rod 4 is fixedly connected to the connecting plate 2, an I-beam 3 is fixedly connected below the connecting plate 2, and both the connecting plate 2 and the I-beam 3 are embedded in the bridge. The connecting plate 2 is arranged on the bridge deck 1, the I-beam 3 is arranged at the bottom of the connecting plate 2, the connecting plate 2 and the I-beam 3 are embedded in the concrete of the bridge deck 1, installation holes are arranged on both sides of the bridge deck 1, a fixed rod 4 is arranged in the installation holes, one end of the fixed rod 4 is fixedly connected to the connecting plate 2, and a stopper 5 is fixedly connected to the bottom of the fixed rod 4.

[0033] The fixed rod 4 is vertically and fixedly connected to the bridge, and a number of card slots 9 are provided around its body. The sliding sleeve 6 is slidably connected to the fixed rod 4 in a suspended manner. A resilient element, namely the first spring 8, is connected below the sliding sleeve 6, and its elastic force balances the downward force received by the sliding sleeve 6. A first spring 8 sleeved on the fixed rod 4 is provided between the stop block 5 and the sliding sleeve 6, and a limit stop block 10 for monitoring the amplitude between the fixed rod 4 and the sliding sleeve 6 is provided on the side of the sliding sleeve 6 away from the stop block 5. By providing the I-shaped rod 3, the structural strength of the connecting plate 2 is enhanced. At the same time, since the connecting plate 2 and the I-shaped rod 3 are embedded in the concrete of the bridge deck 1, the relative fixed connection between the connecting plate 2 and the bridge deck 1 is realized. When the bridge deck 1 vibrates, the bridge deck 1 and the connecting plate 2 vibrate synchronously, and the connecting plate 2 drives the fixed rod 4 to vibrate synchronously. At this time, the sliding sleeve 6 remains floating under the elastic push of the first spring 8. Therefore, when the fixed rod 4 vibrates, relative movement occurs between the fixed rod 4 and the sliding sleeve 6. At this time, the distance of the relative movement between the fixed rod 4 and the sliding sleeve 6 can be detected by the limit stop block 10, so as to facilitate the staff to visually observe the amplitude of the bridge deck 1.

[0034] A counterweight block 7 is fixedly connected to the sliding sleeve 6. By providing the counterweight block 7 in the present utility model, the inertial force received by the sliding sleeve 6 is increased, thereby improving the sensitivity when the sliding sleeve 6 and the fixed rod 4 vibrate relative to each other.

[0035] Combined with the attached Figure 3 The limit stop block 10 includes a clamping block 16. The clamping block 16 is horizontally elastically clamped with the card slot 9 to fix the height position. The clamping block 16 moves between different card slots 9. The limit stop block 10 is located above the sliding sleeve 6 and is pushed by the sliding sleeve 6 to move. The limit stop block 10 is provided on the side of the sliding sleeve 6 away from the stop block 5. A plurality of groups of equally spaced card slots 9 are provided on the outer wall of the fixed rod 4. Clamping blocks 16 are provided on both sides of the card slot 9. The clamping blocks 16 are of a symmetric bilateral structure, which is more stable.

[0036] The side wall of the card slot 9 is inclined, and the upper and lower surfaces of the clamping block 16 are inclined. When the clamping block 16 slides up and down, it is subjected to a horizontal thrust from the card slot 9. The clamping block 16 is horizontally slidably connected to the limit stop 10, and an elastic member, namely the second spring 15, is connected between the clamping block 16 and the limit stop 10. The contact surface between the card slot 9 and the clamping block 16 is a V-shaped structure. An upper inclined surface 17 is provided at the top of the clamping block 16, and a lower inclined surface 18 is provided at the bottom of the clamping block 16. While ensuring the relative clamping between the clamping block 16 and the card slot 9, the lower surface of the clamping block 16 is in an inclined contact with the bottom of the card slot 9. Thus, when the staff presses the limit stop 10, the vertical force received by the limit stop 10 will be converted into a horizontal force through the inclined contact between the lower surface of the clamping block 16 and the bottom of the card slot 9, thereby driving the clamping block 16 to move away from the fixed rod 4. As a result, the clamping block 16 loses its cooperation with the card slot 9. At this time, the limit stop 10 can be pressed back above the sliding sleeve 6, so as to reset the limit stop 10.

[0037] Fixed frames 11 are fixedly connected to both sides of the limit stop 10. All holes are provided in the fixed frames 11, and telescopic rods 12 are slidably connected in the holes. A limit block 13 is fixedly connected to one end of the telescopic rod 12, and a connecting block 14 is fixedly connected to the other end of the telescopic rod 12. The clamping block 16 is fixedly connected to the connecting block 14. A second spring 15 sleeved on the telescopic rod 12 is provided between the fixed frame 11 and the connecting block 14. When the sliding sleeve 6 makes a relative sliding with the fixed rod 4 under the driving of the inertial force generated by the vibration of the bridge deck 1, the sliding sleeve 6 will perform a simple harmonic oscillation on the fixed rod 4. When the sliding sleeve 6 moves towards one end close to the bridge deck 1, the sliding sleeve 6 drives the limit stop 10 to move synchronously towards the side close to the bridge deck 1. And during the movement of the limit stop 10, the limit stop 10 drives the clamping block 16 to move synchronously. During the movement of the clamping block 16, through the mutual cooperation between the card slot 9 and the upper inclined surface 17, the linear motion of the clamping block 16 in the vertical direction is converted into the horizontal motion of the clamping block 16, thereby driving the clamping block 16 to move away from the fixed rod 4 and compressing the first spring 8. When the clamping block 16 loses the driving force, the clamping block 16 is elastically pushed by the first spring 8 and clamped into a group of card slots 9. Thus, through the mutual cooperation between the card slot 9 and the clamping block 16, the limit stop 10 and the fixed rod 4 are relatively fixed. After that, the staff can directly observe the relative position between the limit stop 10 and the fixed rod 4 to visually observe the amplitude of the bridge deck 1.

[0038] Embodiment 2

[0039] A bridge vibration monitoring device according to this embodiment can be improved as follows compared with the technical solution of Embodiment 1:

[0040] The contact surface between the card slot 9 and the clamping block 16 is a wavy structure. The groove surface of the card slot 9 and the end of the clamping block 16 are both wavy and the curvatures match to achieve clamping.

[0041] The above has schematically described the present utility model and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present utility model, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A bridge vibration monitoring device, characterized in that, including a fixed rod, vertically and fixedly connected to the bridge, with a number of card slots provided on its body; a sliding sleeve, floatingly and slidably connected to the fixed rod; a limiting stop block, including a clamping block, the clamping block is horizontally elastically clamped with the card slot to fix the height position, the clamping block moves between different card slots, and the limiting stop block is located above the sliding sleeve and is pushed by the sliding sleeve to move.

2. The bridge vibration monitoring device according to claim 1, characterized in that, An elastic element is connected below the sliding sleeve, and its elastic force balances the downward force received by the sliding sleeve.

3. The bridge vibration monitoring device according to claim 1, characterized in that, The side wall of the card slot is inclined, the upper and lower surfaces of the clamping block are inclined, and the clamping block receives a horizontal thrust from the card slot when sliding up and down.

4. A bridge vibration monitoring device according to claim 3, characterized in that, The clamping block is horizontally slidably connected to the limiting stop block, and an elastic member is connected between the clamping block and the limiting stop block.

5. The bridge vibration monitoring device according to claim 4, characterized in that, The contact surface between the card slot and the clamping block is a V-shaped structure.

6. The bridge vibration monitoring device according to claim 4, wherein, The contact surface between the card slot and the clamping block is a wavy structure.

7. A bridge vibration monitoring device according to claim 1, characterized in that, The fixed rod is fixedly connected to a connecting plate, and an I-shaped rod is fixedly connected below the connecting plate. Both the connecting plate and the I-shaped rod are embedded in the bridge.

8. A bridge vibration monitoring device according to any one of claims 1 to 7, characterized in that The clamping block is a symmetrical bilateral structure.

Images