Anti-fall limiting device for bridge shock resistance

Abstract

The present invention relates to the technical field of bridge shock resistance. Disclosed is an anti-fall limiting device for bridge shock resistance. The present invention comprises a first mounting plate, a slide rail is arranged on one side of the first mounting plate, a slide groove is formed in the middle of the slide rail, a sliding block is in sliding fit with the slide groove, a support rod is in rotatable fit with one side of the sliding block, and a second mounting plate is in rotatable fit with the end of the support rod away from the sliding block, wherein a fixed rod matching the sliding block is in elastic fit with the slide rail, two insertion rods matching two moving blocks are respectively arranged on two ends of the fixed rod, pulleys are in rotatable fit with two sides of the sliding block, and slideways matching the pulleys are provided on two sides of the slide groove. In the present invention, by means of the provided pulleys, when a second mounting plate is stressed to drive the sliding block into the slide groove by means of the support rod, the pulleys can guide the sliding block to stably move along the slideways, and at the same time, two connecting rods drive two moving plates and a pressure spring for cushioning and shock absorption, thereby reducing direct impact on piers.

Description

Anti-falling bridge anti-seismic limiting device TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge anti-seismic, specifically relates to an anti-falling bridge anti-seismic limiting device. BACKGROUND

[0002] Bridge, generally refers to the erected on rivers, lakes and seas, so that vehicles and pedestrians can pass smoothly. In order to adapt to the modern high-speed development of transportation industry, bridge is also extended to the building erected to cross the ravine, poor geology or meet other traffic needs to make the traffic more convenient, and the bridge will vibrate due to the heavy load in the use process, so it is necessary to install a damping and anti-seismic device on the bridge.

[0003] The patent with the application number CN202210049018.5 discloses a bridge anti-seismic limiting device. In the bridge anti-seismic limiting device, a slide rail is arranged on the first mounting seat, a first sliding block is arranged in the slide rail in a sliding manner, and a supporting rod is arranged on one side of the first sliding block in a rotating manner. When the supporting rod is stressed, the first sliding block can slide in the slide rail. The pressure spring arranged on the first sliding block can buffer the movement of the first sliding block. When the pressure spring is deformed and shortened, the movement of the first sliding block can drive the movement of the moving block in the slide rail through the pressure spring. The ratchet bar arranged in the mounting groove can fix the moving block in the slide rail, so that the distance between the moving block and the first sliding block is shortened, the stretching length of the pressure spring is shortened, the elastic critical point of the spring can always be located at both ends of the spring, the damping delay of the spring is avoided, and the bridge anti-seismic effect is improved.

[0004] However, the above-mentioned device, when actually used, acts the force generated by the vibration of the bridge head on the first sliding block through the second mounting seat and the supporting rod, so that the first sliding block slides in the slide rail. Because the supporting rod is arranged in an inclined manner, part of the force will act on one side of the first mounting seat when the first sliding block is moved, the damping effect of the force is poor, the impact on the pier is easy to cause, thereby causing safety accidents and affecting the service life of the bridge. In addition, the moving block is always in an elastic fastening state, although the spring deformation is reduced, but the damping is unstable.

[0005] Therefore, the present application is proposed.

[0006] SUMMARY

[0007] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide an anti-falling bridge anti-seismic limiting device.

[0008] To solve the above technical problems, the basic idea of the technical scheme adopted by the present application is as follows:

[0009] A bridge anti-fall and seismic limiting device includes a first mounting plate, a slide rail is mounted on one side of the first mounting plate, a slide groove is opened in the middle of the slide rail, a slider is slidably fitted in the slide groove, a support rod is rotatably fitted on one side of the slider, and a second mounting plate is rotatably fitted on the end of the support rod away from the slider.

[0010] The slide rail has two sliding plates and two sliding blocks in a sliding fit. The top and bottom of the slider are rotatably fitted with connecting rods. The two ends of the two connecting rods that are far apart from each other are rotatably fitted with the opposite sides of the two sliding plates. Tension springs are installed between the opposite sides of the two sliding plates and the slide rail. Compression springs are installed between the two opposite sides of the two sliding plates and the opposite sides of the two sliding blocks.

[0011] The slide rail is elastically fitted with a fixed rod that cooperates with the slider. Two insert rods that cooperate with the two moving blocks are respectively provided at both ends of the fixed rod. Both sides of the slider are rotatably fitted with pulleys, and both sides of the slide groove are provided with slide tracks that cooperate with the pulleys.

[0012] Optionally, to facilitate fixing the movable block, a slot is provided on the side of the movable block that fits against the inner wall of the slide. One end of the insert rod that passes through the inner wall of the slide engages with the slot. One end of each insert rod is rounded. The two insert rods engage with the two slots respectively, and the rounded corners of the two insert rods engage with the two movable blocks respectively.

[0013] Optionally, to facilitate maintenance of the device, two limiting grooves are provided on both sides of the inner wall of the slide rail, and an accordion cover is slidably fitted between the two corresponding limiting grooves. A handle is installed at one end of the accordion cover.

[0014] Optionally, to facilitate buffering of the slider, a buffer pad is installed inside the slide groove. The buffer pad is made of rubber and fits between the buffer pad and the slider.

[0015] Optionally, to facilitate the adjustment of the fixed rod by the slider, a limiting cavity connected to the slide groove is provided in the slide rail. The fixed rod slides within the limiting cavity, and one side of the fixed rod is elastically engaged with one side of the inner wall of the limiting cavity. A groove is provided on one side of the slider, and the groove engages with the fixed rod.

[0016] Optionally, to facilitate the movement of the movable plate by the tension spring, two tension springs are provided between one side of the movable plate and one side of the inner wall of the slide rail, and two first damping dampers are installed between one side of the movable plate and one side of the inner wall of the slide rail, with the two tension springs respectively located on the periphery of the two first damping dampers.

[0017] Optionally, to facilitate the damping effect of the pressure springs, two second damping dampers are installed between one side of the moving block and one side of the moving plate, and two pressure springs are installed between one side of the moving block and one side of the moving plate, with the two pressure springs respectively set on the periphery of the two second damping dampers.

[0018] Optionally, in order to facilitate the installation of the first mounting plate, a connecting plate is arranged on the top of the first mounting plate, a plurality of first mounting holes are arranged on one side of the first mounting plate, and a plurality of second mounting holes are arranged on the connecting plate.

[0019] Optionally, in order to facilitate the connection of the second mounting plate and the bridge body, an anti-skid block is arranged on the second mounting plate, and a fixing bolt is threadedly connected to each of four corners of the second mounting plate.

[0020] Optionally, in order to continuously support the pressure spring by the moving block, two ratchet racks are arranged on the inner walls of the slide rail, two installation grooves are arranged on the two sides of the moving block, an air spring is arranged in each installation groove, a fixing block is arranged at one end of the air spring, the fixing block is slidably connected to the installation groove, and the two installation grooves are connected to the two corresponding ratchet racks.

[0021] After the above technical scheme is adopted, the present application has the following advantages compared with the prior art, of course, any product implementing the present application does not necessarily need to achieve all the advantages described below:

[0022] When the second mounting plate is forced to move the sliding block into the sliding groove through the supporting rod, the pulley can guide the stable movement of the sliding block along the slide, and the two connecting rods can push the two moving plates and the pressure spring to buffer and absorb the shock, thereby reducing the direct impact on the pier and prolonging the service life of the bridge. The fixing rod can fix the two moving blocks through the two insertion rods, so that the positions of the two moving blocks are fixed, and the pressure spring can buffer and absorb the shock more stably. When the sliding block reaches a certain position in the sliding groove, the fixing rod is moved to release the fixation of the two moving blocks. At this time, most of the impact force of the shock has been reduced, and the two moving blocks can move to release the pressure spring, thereby reducing the deformation of the pressure spring without affecting the shock absorption effect. The tension spring can pull the moving plate after the shock absorption is completed, so that the moving plate pulls the moving block through the pressure spring to reset, thereby facilitating the subsequent shock absorption of the bridge. The connecting rod can push the two connecting rods during the movement of the sliding block into the sliding groove, so that the two connecting rods push the two moving plates to absorb the shock. When the two moving plates are pulled back to the original position by the tension spring, the two moving plates can also drive the sliding block to move out of the sliding groove through the two connecting rods.

[0023] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0025] Fig. 1 is a schematic diagram of the anti-shock limiting device structure;

[0026] Fig. 2 is a schematic diagram of the slider structure;

[0027] Fig. 3 is a schematic diagram of the slide rail structure;

[0028] Fig. 4 is a schematic diagram of the moving plate structure;

[0029] Fig. 5 is a schematic diagram of the moving block structure;

[0030] Fig. 6 is a schematic diagram of the piano cover structure;

[0031] Fig. 7 is a schematic diagram of the second mounting plate structure;

[0032] In the drawings, the components represented by each reference numeral are listed as follows: first mounting plate 1, slide rail 2, slide groove 3, slider 4, support rod 5, second mounting plate 6, moving plate 7, moving block 8, connecting rod 9, tension spring 10, pressure spring 11, limiting cavity 12, fixed rod 13, insertion rod 14, insertion groove 15, piano cover 16, limiting groove 17, handle 18, buffer pad 19, groove 20, pulley 21, slide 22, first shock-absorbing damping 23, second shock-absorbing damping 24, connecting plate 25, first mounting hole 26, second mounting hole 27, anti-skid block 28, fixed bolt 29, ratchet bar 30, mounting groove 31, gas spring 32, fixed block 33.

[0033] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] The present application will now be further described in detail with reference to the accompanying drawings.

[0035] Please refer to Figs. 1-7, in this embodiment, a bridge anti-shock limiting device is provided, which includes a first mounting plate 1, a slide rail 2 is arranged on one side of the first mounting plate 1, a slide groove 3 is formed in the middle of the slide rail 2, a slider 4 is slidingly fitted in the slide groove 3, a support rod 5 is rotatably fitted on one side of the slider 4, and a second mounting plate 6 is rotatably fitted on the end of the support rod 5 away from the slider 4;

[0036] Two moving plates 7 and two moving blocks 8 are slidingly fitted in the slide rail 2, connecting rods 9 are rotatably fitted on the top and bottom of the slider 4, the two ends of the two connecting rods 9 away from each other are rotatably fitted with the opposite sides of the two moving plates 7, respectively, and tension springs 10 are arranged between the opposite sides of the two moving plates 7 and the slide rail 2, respectively, and pressure springs 11 are arranged between the opposite sides of the two moving blocks 8 and the two sides of the two moving plates 7 away from each other;

[0037] The sliding rail 2 is elastically matched with the fixed rod 13 matched with the sliding block 4, both ends of the fixed rod 13 are respectively provided with two insertion rods 14 matched with two moving blocks 8, both sides of the sliding block 4 are rotationally matched with the pulleys 21, both sides of the sliding groove 3 are provided with the sliding ways 22 matched with the pulleys 21.

[0038] An aspect of the embodiment is applied as follows: in use, the first mounting plate 1 is mounted to one side of the pier, and then the second mounting plate 6 is mounted to the bridge body; when the bridge head is shaken, the force generated will act on the sliding block 4 through the second mounting plate 6 and the supporting rod 5, the sliding block 4 is moved by the two pulleys 21, the pulleys 21 drive the sliding block 4 into the sliding groove 3 along the sliding ways 22, the sliding groove 3 pushes the two connecting rods 9 in the process of entering the sliding groove 3, so that the two connecting rods 9 push the two moving plates 7 respectively, the two moving plates 7 press the pressure springs 11 to buffer and absorb the shock, and the force is dispersed and absorbed; when the sliding block 4 completely enters the sliding groove 3, the fixed rod 13 is adjusted to release the fixation of the two moving blocks 8, at this time, the pressure springs 11 have reduced most of the impact force of the shock, and the two moving blocks 8 can move to release the pressure springs 11, which reduces the deformation of the pressure springs 11 without affecting the shock absorption effect; after the shock absorption is completed, the two tension springs 10 pull the two moving plates 7 respectively, so that the two moving plates 7 pull the two moving blocks 8 through the pressure springs 11 to reset, and the two moving plates 7 drive the sliding block 4 to move out of the sliding groove 3 through the connecting rods 9, then the fixed rod 13 fixes the two reset moving blocks 8, which is convenient for subsequent shock absorption of the bridge body, and the device can be arranged on both sides of the pier to improve the shock absorption effect of the bridge body.

[0039] Through the pulley 21 arranged, when the second mounting plate 6 is forced to move the sliding block 4 into the sliding groove 3 through the support rod 5, the pulley 21 can guide the stable movement of the sliding block 4 along the slide 22, and the two connecting rods 9 push the two moving plates 7 and the pressure spring 11 to buffer and reduce the shock, thereby reducing the direct impact on the pier and prolonging the service life of the bridge. Through the fixing rod 13 arranged, the fixing rod 13 can fix the two moving blocks 8 through the two inserting rods 14, so that the positions of the two moving blocks 8 are fixed, and the pressure spring 11 can buffer and reduce the shock more stably. When the sliding block 4 enters a certain position in the sliding groove 3, the fixing rod 13 is adjusted, so that the fixing rod 13 releases the fixing of the two moving blocks 8. At this time, most of the impact force of the shock has been reduced, and the two moving blocks 8 are released after the fixing, so that the pressure spring 11 can be released. The shock-absorbing effect is not affected, and the deformation of the pressure spring 11 is reduced. Through the tension spring 10 arranged, after the shock absorption is completed, the moving plate 7 can be pulled, so that the moving plate 7 pulls the moving block 8 through the pressure spring 11 to reset, thereby facilitating subsequent shock absorption of the bridge. Through the connecting rod 9 arranged, the sliding block 4 can be pushed into the sliding groove 3 during movement, so that the two connecting rods 9 are pushed, and the two connecting rods 9 push the two moving plates 7 to reduce the shock. When the two moving plates 7 are pulled and reset by the tension spring 10, the two moving plates 7 also drive the sliding block 4 to move out of the sliding groove 3 through the two connecting rods 9 to reset.

[0040] As shown in Figures 4-5, the side of the moving block 8 abutting the inner wall of the sliding groove 3 is provided with a slot 15, one end of the inserting rod 14 penetrating the inner wall of the sliding groove 3 is matched with the slot 15, and the ends of the two inserting rods 14 are provided with rounded corners. The two inserting rods 14 are matched with the two slots 15 respectively, and the rounded corners of the two inserting rods 14 are matched with the two moving blocks 8 respectively. Through the rounded corners of the inserting rod 14, when the moving block 8 is reset, the rounded corners of the inserting rod 14 are extruded, so that the inserting rod 14 is retracted. When the moving block 8 moves to the position where the inserting rod 14 is aligned with the slot 15, the inserting rod 14 can be popped out and inserted into the slot 15, so as to facilitate the fixing of the moving block 8 after the reset.

[0041] As shown in Figure 6, the inner walls of the slide rails 2 are provided with two limiting grooves 17 on both sides, and an organ cover 16 is slidably matched between the two corresponding limiting grooves 17. One end of the organ cover 16 is provided with a handle 18. Through the arrangement of the organ cover 16, the handle 18 can be pulled to drive the organ cover 16 to be retracted. At this time, the staff can check the internal condition of the slide rail 2, and the organ cover 16 can also prevent external sundries from entering the slide rail 2.

[0042] As shown in FIG. 2-3, the sliding groove 3 of the embodiment is provided with a buffer pad 19, which is made of rubber and cooperates with the sliding block 4. The buffer pad 19 can buffer the sliding block 4 when the sliding block 4 moves into the sliding groove 3 and contacts the buffer pad 19.

[0043] As shown in FIG. 3-4, the sliding rail 2 of the embodiment is provided with a limiting cavity 12 which is connected with the sliding groove 3, and a fixed rod 13 which is slidingly fitted in the limiting cavity 12 and elastically cooperates with one side of the inner wall of the limiting cavity 12. One side of the sliding block 4 is provided with a groove 20 which cooperates with the fixed rod 13. The limiting cavity 12 can limit the moving direction of the fixed rod 13. When the sliding block 4 moves into the sliding groove 3, the fixed rod 13 will enter the groove 20, so that the sliding block 4 can push the fixed rod 13 to move, and the fixed rod 13 can drive the two inserting rods 14 to move and release the fixation of the two moving blocks 8.

[0044] As shown in FIG. 3-4, the two tension springs 10 between one side of the moving plate 7 and one side of the inner wall of the sliding rail 2 are provided with two first damping dampers 23, and the two tension springs 10 are respectively arranged on the circumferential sides of the two first damping dampers 23. The first damping dampers 23 can connect one side of the moving plate 7 and one side of the inner wall of the sliding rail 2, so that the tension springs 10 can drive the moving plate 7 to move stably.

[0045] As shown in FIG. 3-4, the two second damping dampers 24 between one side of the moving block 8 and one side of the moving plate 7 are provided with two compression springs 11, and the two compression springs 11 are respectively arranged on the circumferential sides of the two second damping dampers 24. The second damping dampers 24 are arranged between one side of the moving block 8 and one side of the moving plate 7, so as to improve the damping effect of the compression springs 11.

[0046] As shown in FIG. 1, the top of the first mounting plate 1 is provided with a connecting plate 25, one side of the first mounting plate 1 is provided with a plurality of first mounting holes 26, and the connecting plate 25 is provided with a plurality of second mounting holes 27. The connecting plate 25 can be placed on the top of the pier, so that the first mounting plate 1 is attached to one side of the pier. Then, the first mounting plate 1 and the connecting plate 25 can be fixed through the first mounting holes 26 and the second mounting holes 27, which is convenient for the staff to install and use.

[0047] As shown in Figure 7, the second mounting plate 6 of the embodiment is provided with anti-skid blocks 28, and the four corners of the second mounting plate 6 are threadedly connected with fixing bolts 29. The anti-skid blocks 28 are in close contact with the bridge body, and the friction between the second mounting plate 6 and the bridge body is increased. The fixing bolts 29 can connect and fix the second mounting plate 6 and the bridge body.

[0048] As shown in Figure 5, the inner wall of the sliding rail 2 of the embodiment is provided with two ratchet strips 30 on both sides, and the two sides of the moving block 8 are provided with installation grooves 31, and the installation grooves 31 are provided with air springs 32, one end of the air spring 32 is provided with a fixed block 33, the fixed block 33 is slidingly connected in the installation groove 31, and the two installation grooves 31 are connected with two corresponding ratchet strips 30. The ratchet strip 30 can make the air spring 32 drive the fixed block 33 to extend out of the installation groove 31, and the fixed block 33 is in abutment with the ratchet strip 30, and then the moving block 8 is fixed, so that the moving block 8 supports the pressure spring 11. When the moving block 8 is subjected to excessive force, the fixed block 33 will retract into the installation groove 31, so that the moving block 8 can move to release the pressure of the pressure spring 11.

[0049] The present application is not limited to the above-mentioned embodiments, and any person should know that the structural changes made under the inspiration of the present application fall within the protection scope of the present application. The technical, shape and structure parts not described in detail in the present application are well-known technologies.

Claims

1. A fall-preventing bridge anti-seismic limiting device, characterized in that, include: The first mounting plate (1) has a slide rail (2) installed on one side. A slide groove (3) is opened in the middle of the slide rail (2). A slider (4) is slidably fitted in the slide groove (3). A support rod (5) is rotatably fitted on one side of the slider (4). A second mounting plate (6) is rotatably fitted on the end of the support rod (5) away from the slider (4). The slide rail (2) has two sliding plates (7) and two sliding blocks (8) in sliding fit. The top and bottom of the slider (4) are rotatably fitted with connecting rods (9). The two ends of the two connecting rods (9) that are far apart from each other are rotatably fitted with the opposite sides of the two sliding plates (7). Tension springs (10) are installed between the opposite sides of the two sliding plates (7) and the slide rail (2). Pressure springs (11) are installed between the two sides of the two sliding plates (7) that are far apart from each other and the opposite sides of the two sliding blocks (8). Among them, the slide rail (2) is elastically fitted with a fixed rod (13) that cooperates with the slider (4). The two ends of the fixed rod (13) are respectively provided with two insert rods (14) that cooperate with the two moving blocks (8). The slider (4) is rotatably fitted with pulleys (21) on both sides. The slide groove (3) is provided with slide tracks (22) that cooperate with the pulleys (21) on both sides.

2. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, A slot (15) is provided on the side of the movable block (8) that is in contact with the inner wall of the slide (3). One end of the insert rod (14) that passes through the inner wall of the slide (3) is engaged with the slot (15). One end of each insert rod (14) is provided with a rounded corner. The two insert rods (14) are engaged with the two slots (15) respectively. The rounded corners of the two insert rods (14) are engaged with the two movable blocks (8) respectively.

3. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, Two limiting grooves (17) are provided on both sides of the inner wall of the slide rail (2). A accordion cover (16) is slidably fitted between the two corresponding limiting grooves (17). A handle (18) is installed at one end of the accordion cover (16).

4. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, The slide (3) is equipped with a buffer pad (19), which is made of rubber and is fitted with the slider (4).

5. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, The slide rail (2) has a limiting cavity (12) that communicates with the slide groove (3). The fixed rod (13) is slidably fitted in the limiting cavity (12). One side of the fixed rod (13) is elastically fitted with one side of the inner wall of the limiting cavity (12). One side of the slider (4) has a groove (20) that fits with the fixed rod (13).

6. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, There are two tension springs (10) between one side of the movable plate (7) and one side of the inner wall of the slide rail (2). Two first damping dampers (23) are installed between one side of the movable plate (7) and one side of the inner wall of the slide rail (2). The two tension springs (10) are respectively set on the periphery of the two first damping dampers (23).

7. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, Two second damping dampers (24) are installed between one side of the moving block (8) and one side of the moving plate (7), and two pressure springs (11) are installed between one side of the moving block (8) and one side of the moving plate (7). The two pressure springs (11) are respectively set on the periphery of the two second damping dampers (24).

8. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, The top of the first mounting plate (1) is provided with a connecting plate (25), a plurality of first mounting holes (26) are formed in one side of the first mounting plate (1), and a plurality of second mounting holes (27) are formed in the connecting plate (25).

9. The anti-falling bridge anti-seismic limiting device according to claim 1, characterized in that, The second mounting plate (6) is provided with anti-skid blocks (28), and the four opposite corners of the second mounting plate (6) are threadedly connected with fixing bolts (29).

10. The anti-falling bridge seismic limiting device according to claim 1, characterized in that, Two ratchet racks (30) are arranged on the inner walls of the slide rails (2), and the two sides of the moving block (8) are provided with mounting grooves (31); the mounting grooves (31) are provided with air springs (32), one end of the air spring (32) is provided with a fixed block (33), the fixed block (33) is slidably connected in the mounting groove (31), and the two mounting grooves (31) are matched with two corresponding ratchet racks (30).

Images