CN206346104U - A kind of bridge shockproof device - Google Patents

Abstract

The utility model discloses a bridge anti-vibration device, which relates to the technical field of bridge anti-vibration. It comprises bridge deck and bridge pier, and interlayer is connected between the bridge deck and bridge pier; the upper surface of the interlayer is evenly distributed with control grooves in the left and right directions along the front and rear directions; the anti-shock buffer device includes through holes symmetrically arranged on the interlayer; The inner end of the threaded rod is in the control groove and is connected with a push plate; one end of the adjustment stage spring is in contact with the push plate, and the other end is connected with a sliding block; both sliding blocks are rotatably connected with a support rod; the two support rods The upper end is rotatably connected by a rotating shaft; the lower surface of the bridge deck is evenly distributed with limit blocks corresponding to the control grooves, and in each control groove, the limit blocks are symmetrically distributed on both sides of the rotating shaft; the four sides of the limit block are all fixed There is a buffer device. The beneficial effects of the utility model are: the use of the threaded rod facilitates the setting and debugging of the adjustable compression spring, and can play a buffering and shockproof effect on both horizontal and vertical vibrations.

Description

anti-seismic device for a bridge

technical field

The utility model relates to the technical field of bridge shockproofing.

Background technique

Bridges are easily affected by vibration during the load-bearing process. General shock-proof and shock-absorbing devices rely on elastic devices to support and reduce the hazards of vibration. The general elastic anti-vibration and shock-absorbing device only considers the vibration in the up and down direction, lacks or has no anti-vibration and shock-absorbing effect in the horizontal plane, and in actual use, it lacks the setting adjustment of the elastic device, and it cannot be adjusted according to the actual situation. The simple adjustment will affect the actual use effect.

Utility model content

The technical problem to be solved by the utility model is to provide a bridge anti-vibration device for the above-mentioned existing technical deficiencies. The use of threaded rods facilitates the setting and debugging of the adjustable compression spring, and can play a role of buffering and shockproof for both horizontal and vertical vibrations.

The technical solution adopted by the utility model is: provide a bridge anti-seismic device, including bridge deck and bridge pier, characterized in that: there is an interlayer connected between the bridge deck and the bridge pier, and the interlayer is fixedly connected to the top of the bridge pier; the upper surface of the interlayer is along the front and rear The direction is evenly distributed with control grooves in the left and right directions; the shock-proof buffer device is installed in the control groove; the shock-proof buffer device includes through holes arranged symmetrically on the interlayer, and the through holes communicate with the control groove; threaded sleeves are fixed in the through holes ; The internal thread of the threaded casing is connected with a threaded rod; the inner end of the threaded rod is in the control groove and is connected with a push plate, and the outer end is a hexagonal prism; the other side of the push plate is fixed with a horizontal guide rod; An adjustable compression spring is socketed; one end of the adjustable compression spring is in contact with the push plate, and the other end is connected with a sliding block, which is slidably connected with the bottom of the control groove; both sliding blocks are rotatably connected with a support rod; the two support rods The upper end is rotationally connected by the rotating shaft, and the lower surface of the bridge deck is in contact with the rotating shaft; the lower surface of the bridge deck is evenly distributed with limit blocks corresponding to the control grooves, and in each control groove, the limit blocks are symmetrically distributed on both sides of the rotating shaft; Buffer devices are fixed on the four sides of the limit block.

To further optimize this technical solution, grooves are evenly opened on the left and right sides of the upper surface of the interlayer of a bridge anti-vibration device; supporting compression springs are fixed in the grooves, and the upper ends of the supporting compression springs are in contact with the lower surface of the bridge deck.

To further optimize the technical solution, a bridge anti-vibration device is fixed with a stopper in the middle of the bottom end of each control groove between the two sliding blocks in each control groove.

To further optimize this technical solution, a pressure sensor is installed on a push plate of a bridge anti-vibration device, the pressure sensor is between the push plate and the adjustment compression spring, and the output end of the pressure sensor is connected to an external display device.

Compared with the traditional bridge anti-vibration device, the utility model has the beneficial effects of:

1. The interlayer is the connecting device in the middle, and the connection and shock-proof and shock-absorbing functions are realized through the shock-proof buffer device. The upper ends of the two support rods are connected by rotation to form a triangular support with a variable bottom length. The two sliding blocks slide in the control groove to change the length of the bottom, thereby changing the height position of the shaft, that is, the adjustment of the up and down floating It is adaptable and plays the role of shockproof buffer. The adjustable compression springs on both sides play the role of supporting and buffering the sliding block. The threaded rod plays the role of adjusting and setting the adjustable compression spring. The connection and cooperation can drive the movement of the push plate, thereby changing the length of the initial extrusion state of the adjustable compression spring, that is, changing the initial state to adjust the supporting force of the compression spring to the sliding block. When the supporting force is large, the sliding block is not easy to occur. Sliding, the guide rod fixed on the push plate plays a guiding role in adjusting the pressure spring, avoiding the deviation in the case of unbalanced force on the adjustment pressure spring, and at the same time limiting the minimum distance between the sliding block and the push plate. The spring plays a protective role to avoid failure. There are two limit blocks corresponding to each control slot, and the buffer device is fixed on the side of the limit block, which can realize the buffer connection between the limit block and the control slot in four horizontal directions, and play a role in limiting the bridge deck. Connection and buffer shockproof effect;

2. The support compression springs in multiple grooves support the bridge deck, improve the stability of the support, and at the same time provide a buffer support connection method;

3. The stopper in the middle of the bottom end of the control groove is used to limit the sliding of the sliding block to the middle, so as to avoid the small distance between the two sliding blocks and cause the height of the rotating shaft to be high, and at the same time, it can cooperate with the adjustment of the threaded rod to adjust the compression spring;

4. The pressure value of the pressure spring on the push plate can be detected and adjusted through the pressure sensor, which is convenient to reflect the adjustment strength through the specific vertical when adjusting the threaded rod. Vibration situation.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the decomposition structure of the utility model;

Fig. 3 is a half structure exploded schematic view of the shock absorbing buffer device;

In the figure, 1. bridge deck; 2. pier; 3. interlayer; 4. control groove; 5. through hole; 6. threaded sleeve; 7. threaded rod; 8. push plate; 9. guide rod; 10. adjustment Compression spring; 11, sliding block; 12, support rod; 13, rotating shaft; 14, limit block; 15, buffer device; 16, groove; 17, support compression spring;

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figures 1-3, a bridge anti-seismic device includes a bridge deck 1 and a bridge pier 2, and is characterized in that: an interlayer 3 is connected between the bridge deck 1 and the bridge pier 2, and the interlayer 3 is fixedly connected to the top of the bridge pier 2; The upper surface of the interlayer 3 is evenly distributed with control grooves 4 in the left and right direction along the front and rear direction; the shockproof buffer device 15 is installed in the control groove 4; It communicates with the control groove 4; a threaded sleeve 6 is fixed in the through hole 5; the threaded sleeve 6 is internally threaded with a threaded rod 7; the inner end of the threaded rod 7 is in the control groove 4 and is connected with a push plate 8, and the outer end It is a hexagonal prism; the other side of the push plate 8 is fixed with a horizontal guide rod 9; the guide rod 9 is sleeved with an adjustment compression spring 10; one end of the adjustment compression spring 10 is in contact with the push plate 8, and the other end is connected with a sliding block 11, the sliding block 11 is slidingly connected with the bottom of the control groove 4; the two sliding blocks 11 are rotatably connected with a support rod 12; contact; the lower surface of the bridge deck 1 is evenly distributed with limit blocks 14 corresponding to the control groove 4, and in each control groove 4, the limit blocks 14 are symmetrically distributed on both sides of the rotating shaft 13; four limit blocks 14 Buffer devices 15 are fixed on the sides; grooves 16 are evenly opened on the left and right sides of the upper surface of the interlayer 3; supporting compression springs 17 are fixed in the grooves 16, and the upper ends of the supporting compression springs 17 are in contact with the lower surface of the bridge deck 1; Between the two sliding blocks 11 in the control groove 4, a stopper 18 is fixed in the middle of the bottom end of the control groove 4; During this period, the output end of the pressure sensor 19 is connected to an external display device.

When the utility model is in use, the interlayer 3 connects the bridge deck 1 and the bridge pier 2. In each control groove 4, the anti-shock buffer device 15 plays the role of buffering, shock absorption and supporting connection. The combination of the two support rods 12 cooperates Adjust the compression spring 10 to play a buffering role in the up and down direction, and at the same time play a supporting role for the bridge deck 1. Under the action of great gravity, the bridge deck 1 is always pressed on the rotating shaft 13, and the limit block 14 is in the control groove 4 Inside, through the function of the buffer device 15, it plays the role of limiting connection and buffering and shock absorption in the horizontal plane. The thrust of the adjustable compression springs 10 on both sides on the sliding block 11 and the pressure on the rotating shaft 13 on the bridge deck 1 form a balance. When vibration occurs, the bridge deck 1 fluctuates up and down, and the pressure on the rotating shaft 13 changes. When the vibration is downward, the pressure on the rotating shaft 13 is increased, and the rotating shaft 13 moves downward. In the previous state, the thrust of the adjusting stage spring 10 is not enough to maintain the position of the sliding block 11. The sliding block 11 moves to the outside, and the adjusting stage spring 10 is compressed. , the thrust on the sliding block 11 becomes larger, and the three forces balance briefly again, which provides good support for the bridge deck 1 and differentiates the energy of the vibration; When the pressure decreases, adjust the thrust of the compression spring 10 to push the sliding block 11 to move to the middle, and the height of the rotating shaft 13 becomes higher, always touching the bridge deck 1 to play a supporting role until the forces of the three are balanced again to achieve stability. Vibration in the vertical direction has a support rod 12 and an adjustment clip spring 10 for conversion, absorption and energy storage, reducing the harm of vibration. The vibration in the horizontal direction is played by the buffer device 15 on the limit block 14 to buffer and absorb shock. When the vibration in the horizontal direction causes a small displacement of the bridge deck 1, it will be reflected in the tiny movement in the horizontal plane on the limit block 14. The movement in the horizontal plane is limited by the control groove 4. When the limit block 14 is squeezed to one side, it will compress the buffer device 15 in the middle. The buffer device 15 absorbs the energy of the vibration, reduces the transmission of vibration, and reduces the harm of vibration . The buffer device 15 is a common mature device with a buffer effect, such as a buffer device made of a spring, or the buffer device 15 made of other existing materials with deformation buffer capacity. The buffer device 15 adopts existing There are mature means.

When the utility model utilizes elastic buffering and shock absorption, it utilizes the adjustment function of the threaded rod 7 to conveniently adjust the adjustment compression spring 10 on site according to the actual situation, and adjust the thrust provided by the adjustment compression spring 10 in the initial state. The adjustment of the thrust value affects the height of the rotating shaft 13 during actual use. In a stable state, the pressure of the bridge deck 1 on the rotating shaft 13 is constant. The greater the thrust of the adjusting compression spring 10, the greater the clamp between the two support rods 12 will be. The smaller the angle, the higher the rotating shaft 13, and the position of the rotating shaft 13 should not be too high, but also not easy to be too low, so the adjustment of the threaded rod 7 is added to make the adjustment of the height more convenient. The outer end of the threaded rod 7 is in the shape of a hexagonal prism, which facilitates the rotation of the threaded rod 7 by other instruments.

When the stop block 18 is added at the bottom of the control groove 4, the minimum distance between the two sliding blocks 11 can be limited, that is, the maximum height of the rotating shaft 13 can be limited. At the same time, when the stopper 18 cooperates with the adjustment of the threaded rod 7, the minimum limit value for the shortening response of the adjustment compression spring 10 can be set. When the threaded rod 7 is rotated to make the sliding block 11 close to the two sides of the stopper 18, and the compression and adjustment stage clip 10 is continued, the regulating stage clip 10 continues to store energy, and the sliding block 11 cannot continue to move, and the height of the rotating shaft 13 remains unchanged. When the vibration is downward, only when the force is greater than a certain value, the sliding block 11 will be moved to the outside to compress the adjustment compression spring 10, rather than as long as the vibration is downward, the adjustment compression spring 10 will react, which can narrow the range of response and reduce the vibration. The operating frequency of the anti-shock buffer device 15 prolongs the service life.

Through the setting of a plurality of support compression springs 17, the number of buffer support points is increased, and the support stability is improved.

Through the setting of the pressure sensor 19, the strength of adjustment can be observed numerically. The display device used is a conventional display device, and the detection data of the pressure sensor 19 is displayed in numerical form, which is conventional equipment and technical means. If the real-time data of the pressure sensor 19 is processed, it can be shown that the vibration of the bridge is convenient for grasping the frequency and size range of the vibration.

Claims (4)

1. A bridge anti-seismic device, comprising bridge deck (1) and bridge pier (2), is characterized in that: interlayer (3) is connected between bridge deck (1) and bridge pier (2), interlayer (3) and bridge pier (2) The top of the bridge pier (2) is fixedly connected; the upper surface of the interlayer (3) is evenly distributed along the front and rear directions with control grooves (4) in the left and right directions; the control groove (4) is installed with an anti-shock buffer device (15); The anti-shock buffer device (15) includes a through hole (5) symmetrically arranged on the interlayer (3), and the through hole (5) communicates with the control groove (4); a threaded sleeve (5) is fixed inside the through hole (5). 6); the threaded sleeve (6) is connected with a threaded rod (7); the inner end of the threaded rod (7) is in the control groove (4) and is connected with a push plate (8), and the outer end is hexagonal ; The other side of the push plate (8) is fixed with a horizontal guide rod (9); the guide rod (9) is sleeved with an adjustment compression spring (10); one end of the adjustment compression spring (10) is connected to the push plate (8) ) contact, the other end is connected with a sliding block (11), and the sliding block (11) is slidingly connected with the bottom of the control groove (4); the two sliding blocks (11) are rotationally connected with a support rod (12); the two support rods The upper end of (12) is rotationally connected by the rotating shaft (13), and the lower surface of the bridge deck (1) is in contact with the rotating shaft (13); the lower surface of the bridge deck (1) is evenly distributed with limit blocks corresponding to the control groove (4) ( 14), in each control groove (4), the limit block (14) is symmetrically distributed on both sides of the rotating shaft (13); buffer devices (15) are fixed on the four sides of the limit block (14). 2. A bridge anti-vibration device according to claim 1, characterized in that grooves (16) are evenly opened on the left and right sides of the upper surface of the interlayer (3); support springs (16) are fixed in the grooves (16) 17), the upper end of the supporting clip spring (17) is in contact with the lower surface of the bridge deck (1). 3. A bridge anti-vibration device according to claim 1, characterized in that: between the two sliding blocks (11) in each control groove (4), a stopper is fixed in the middle of the bottom end of the control groove (4). block (18). 4. A bridge anti-vibration device according to claim 1, characterized in that: a pressure sensor (19) is installed on a push plate (8), and the pressure sensor (19) is connected between the push plate (8) and the adjustment spring Between (10), the output end of the pressure sensor (19) is connected with an external display device.