CN216615498U - Bridge limit structure - Google Patents

Abstract

The utility model discloses a bridge limiting structure which comprises a bridge pier, wherein the top of the bridge pier is connected with a bridge through a limiting mechanism B, the bridge pier and two sides of the bridge are respectively provided with a limiting mechanism A, and the limiting mechanism A is formed by combining a fixing bolt, a fixing block A, a supporting rod A, a fixing ring, a tension spring A, a fixing plate A, a pull ring A, a steel wire rope, a pull ring B, a fixing block B, a supporting column, a rubber column, a limiting column A, a spring A, a limiting column B, a groove A, a guide column, a spring B, a moving block A, a supporting rod B, a tension spring B, a fixing block C, a supporting rod C, a fixing block D, a limiting column C, a rubber block, a bearing A, a guide groove, a groove B, a fixing rod, a bearing B, a connecting plate, a moving block B, a spring C, a fixing rod B and a groove C. The utility model solves the problem that the existing bridge cannot be positioned during installation, is convenient for workers to install the bridge, avoids the side turning and the transverse displacement of the bridge and has strong practicability.

Description

Bridge limit structure

Technical Field

The utility model relates to the technical field of bridge engineering, in particular to a bridge limiting structure.

Background

The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for spanning obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like.

However, the existing bridge limit cannot position and install the bridge, so that the installation of the bridge is complex and tedious, and the existing bridge limit can cause the side turning of the bridge and the transverse displacement of the bridge under the condition of overlarge external pressure, so that the safety of people and the bridge is threatened; therefore, the existing use requirements are not satisfied.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bridge limiting structure to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a bridge limiting structure comprises a bridge pier, wherein the top of the bridge pier is connected with a bridge through a limiting mechanism B, limiting mechanisms A are arranged on two sides of the bridge pier and two sides of the bridge pier respectively, each limiting mechanism A is composed of a fixing bolt, a fixing block A, a supporting rod A, a fixing ring, a tension spring A, a fixing plate A, a pull ring A, a steel wire rope, a pull ring B, a fixing block B, a supporting column, a rubber column, a limiting column A, a spring A, a limiting column B, a groove A, a guide column, a spring B, a moving block A, a supporting rod B, a tension spring B, a fixing block C, a supporting rod C, a fixing block D, a limiting column C, a rubber block, a bearing A, a guide groove, a groove B, a fixing rod A, a bearing B, a connecting plate, a moving block B, a spring C, a fixing rod B and a groove C, a groove C is arranged on two sides of the upper surface of the bridge pier, a groove C is internally provided with a supporting column, the top end of the support column is tightly attached to the bottom end of the bridge, the bottom end inside the groove C is evenly provided with limiting columns B at intervals, the outer side outer walls of the limiting columns B are wrapped with rubber columns, springs A are arranged between every two adjacent rubber columns, the bottom end inside the spring A is provided with the limiting columns A, the bottom ends of the limiting columns A are fixed to the bottom end of the groove C, the top ends of the springs A and the rubber columns are tightly attached to the bottom end of the support column, the springs A and the rubber columns are located between the support column and the groove C, a fixing block B is installed on one side of the upper surface of the bridge pier, a pull ring B is arranged at the bulge of one side of the fixing block B, a steel wire rope is installed on the outer wall of the pull ring B, the other end of the steel wire rope is installed on the pull ring A, the two ends of the pull ring A are installed on the fixing plate A, and a tension spring A is arranged on the upper surface of the fixing plate A, the other end of the tension spring A is fixed on a fixing ring, a support rod A is arranged on the outer wall of the outer side of the fixing ring, the top end of the support rod A is installed on the lower surface of the fixing block A, a fixing bolt is arranged inside the fixing block A, the top end of the fixing bolt is fixed inside the bridge, a rubber block is installed at the bulge on the other side of the fixing block B, a moving block B is installed on the end face of the other side of the rubber block, the rubber block is located between the bulge on the other side of the fixing block B and the moving block B, the bottom end on one side of the moving block B is connected with a fixing block D through a spring C, a limiting column C is installed at each of two ends inside the spring C, the limiting column C and the spring C are located between the fixing block D and the moving block B, a fixing block C is installed on the upper surface of the fixing block D, and a support rod C is installed at the center position of the end face of the front end face of the fixing block C, the outer wall of the support rod C is provided with a tension spring B, the other end of the tension spring B is arranged on the outer wall of the support rod B, the support rod B is arranged on a moving block A, one side end face of the moving block B is provided with a groove B, a fixed rod A is arranged in the groove B, a bearing B is arranged at the center of the outer wall of the fixed rod A, a connecting plate is arranged on the outer side outer wall of the bearing B, the other end of the connecting plate is connected with the fixed rod B through the bearing A, the fixed rod B is arranged on the moving block A, a guide groove is arranged at the center of the upper surface of the moving block A, a guide post is arranged in the guide groove, the top end of the guide post is arranged at the top end of the inner part of the groove A, the groove A is arranged at the bottom end of the other side bulge of the fixed block B, and the outer wall of the outer side of the guide post is provided with a spring B, the spring B is positioned between the groove A and the moving block A, the limiting mechanism B is formed by combining a mounting plate A, a groove D, a positioning column A, a mounting plate B, a moving plate, a spring D, a sliding rod, a sliding block A, a groove E, a positioning column B, a through hole A, a through hole B, a connecting block A, a connecting rod A, a connecting block B, a supporting rod D, a connecting rod B, a connecting block C and a sliding block B, the mounting plate B is installed at the central position of the upper surface of the pier, the mounting plate A is installed at the central position of the lower surface of the bridge and is positioned right above the mounting plate B, the groove E is arranged at the central position of the lower surface of the mounting plate A, the grooves D are arranged on both sides of the lower surface of the mounting plate A, the moving plate is arranged inside the mounting plate B, the positioning column B is installed at the central position of the upper surface of the moving plate, and the positioning columns A are installed on both sides of the upper surface of the moving plate, through-hole A on the mounting panel B is all passed on reference column A's top is connected with recess D, through-hole B on the mounting panel B is passed on reference column B's top is connected with recess E, bracing piece D is installed to the bottom of movable plate, connecting block B is installed to bracing piece D's bottom, connecting block B's both sides terminal surface is connected with connecting block A and connecting block C through connecting rod A and connecting rod B respectively, connecting block A and connecting block C are installed respectively on slider A and slider B, the slide bar is all installed to slider A and slider B's inside, the both ends of slide bar are all installed on mounting panel B's inner wall, be provided with spring D on the outside outer wall of slide bar, and spring D is located between two adjacent objects.

Preferably, the bridge is located right above the pier.

Preferably, the bearing A and the bearing B are both positioned inside the connecting plate.

Preferably, the through holes a are formed on both sides of the upper surface of the mounting plate B.

Preferably, the through hole B is formed in the center of the upper surface of the mounting plate B.

Preferably, the shapes and sizes of the positioning column A and the positioning column B, the groove D and the groove E are matched with each other.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, through the matching arrangement of the groove D, the positioning column A, the moving plate, the groove E, the positioning column B, the sliding block A, the sliding block B, the sliding rod, the connecting rod A, the connecting rod B, the connecting block B and the spring D, when workers carry out bridge installation, the positioning column A is matched with the groove D in shape and size, the positioning column B is matched with the groove E in shape and size, the bridge applies pressure to the positioning column A and the positioning column B, so that the moving plate moves downwards, the moving plate moves the sliding block A and the sliding block B leftwards and rightwards through the connecting rod A and the connecting rod B, the sliding block A and the sliding block B compress the spring D on the sliding rod, the positioning installation and the buffering shock absorption effect can be realized during bridge installation, the transverse offset after installation is avoided, and through the matching arrangement of the rubber column, the limiting column A, the spring A and the limiting column B, when the bridge is installed, the bridge applies downward pressure to the supporting columns, the supporting columns compress the rubber columns and the springs A, so that the effect of buffering and damping can be achieved on the bridge, the stability of a bridge body is improved, the tension spring A, the steel wire rope, the fixing block A, the pull ring B, the moving block B, the rubber blocks, the connecting plate, the spring C, the tension spring B, the moving block A, the spring B, the guide columns and the guide grooves are arranged in a matched mode, when the bridge is subjected to external force to turn on one side, the bridge stretches one side of the bridge through the tension spring A and the steel wire rope, so that the bridge is prevented from turning on one side due to overlarge stress, the safety of personnel and the bridge body is protected, when the bridge is turned on one side, the moving block B compresses and moves the springs C, the rubber blocks and the connecting plate, and the connecting plate moves so that the moving block A moves upwards, the movable block A moves upwards so that the spring B is compressed and the tension spring B is stretched, so that a buffering and damping effect can be generated on the bridge when the bridge body turns over, the bridge is prevented from transversely displacing due to overlarge pressure of the bridge body, and a limiting and buffering and damping effect is achieved.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a partially enlarged structural view of a limiting mechanism A in FIG. 1 according to the present invention;

FIG. 5 is a partially enlarged structural view of a limiting mechanism B in FIG. 1 according to the present invention;

FIG. 6 is an enlarged partial view of FIG. 4 at C in accordance with the present invention;

fig. 7 is a partial enlarged structural view of the utility model at D in fig. 5.

In the figure: 1. a limiting mechanism A; 11. fixing the bolt; 12. a fixed block A; 13. a support rod A; 14. a fixing ring; 15. a tension spring A; 16. fixing a plate A; 17. a pull ring A; 18. a wire rope; 19. a pull ring B; 110. a fixed block B; 111. a support pillar; 112. a rubber column; 113. a limiting column A; 114. a spring A; 115. a limiting column B; 116. a groove A; 117. a guide post; 118. a spring B; 119. moving block A; 120. a support bar B; 121. a tension spring B; 122. a fixed block C; 123. a support bar C; 124. a fixed block D; 125. a limiting column C; 126. a rubber block; 127. a bearing A; 128. a guide groove; 129. a groove B; 130. fixing the rod A; 131. a bearing B; 132. a connecting plate; 133. a moving block B; 134. a spring C; 135. fixing the rod B; 136. a groove C; 2. a limiting mechanism B; 21. mounting a plate A; 22. a groove D; 23. a positioning column A; 24. mounting a plate B; 25. moving the plate; 26. a spring D; 27. a slide bar; 28. A slide block A; 29. a groove E; 210. a positioning column B; 211. a through hole A; 212. a through hole B; 213. connecting a block A; 214. a connecting rod A; 215. connecting block B; 216. a support rod D; 217. a connecting rod B; 218. Connecting blocks C; 219. a slide block B; 3. a bridge pier; 4. a bridge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-7, an embodiment of the present invention is shown: a bridge limiting structure comprises bridge piers 3, the top of the bridge piers 3 is connected with a bridge 4 through a limiting mechanism B2, the two sides of the bridge piers 3 and the bridge 4 are respectively provided with a limiting mechanism A1, the limiting mechanism A1 comprises fixing bolts 11, fixing blocks A12, supporting rods A13, fixing rings 14, tension springs A15, fixing plates A16, pull rings A17, steel wire ropes 18, pull rings B19, fixing blocks B110, supporting columns 111, rubber columns 112, limiting columns A113, springs A114, limiting columns B115, grooves A116, guide columns 117, springs B118, moving blocks A119, supporting rods B120, tension springs B121, fixing blocks C122, supporting rods C123, fixing blocks D124, limiting columns C125, rubber blocks 126, bearings A127, guide grooves 128, grooves B129, fixing rods A130, bearings B131, connecting plates 132, moving blocks B133, springs C134, fixing rods B135 and grooves C136, the two sides of the upper surface of the bridge piers 3 are respectively provided with grooves C136, the supporting columns 111 are installed inside the grooves C136, the top ends of the supporting columns 111 are tightly attached to the bottom end of the bridge 4, the bottom end inside the grooves C136 is evenly provided with limiting columns B115 at intervals, the outer side walls of the limiting columns B115 are wrapped with rubber columns 112, springs A114 are arranged between every two adjacent rubber columns 112, the bottom end inside the springs A114 is provided with limiting columns A113, the bottom ends of the limiting columns A113 are fixed to the bottom end of the grooves C136, the top ends of the springs A114 and the rubber columns 112 are tightly attached to the bottom end of the supporting columns 111, the springs A114 and the rubber columns 112 are located between the supporting columns 111 and the grooves C136, one side of the upper surface of the bridge pier 3 is provided with a fixing block B110, a bulge on one side of the fixing block B110 is provided with a pull ring B19, a steel wire rope 18 is installed on the outer wall of a pull ring B19, the other end of the steel wire rope 18 is installed on a pull ring A17, two ends of a pull ring A17 are installed on a fixing plate A16, and the upper surface of a fixing plate A16 is provided with a tension spring A15, the other end of the tension spring A15 is fixed on the fixed ring 14, a support rod A13 is arranged on the outer wall of the outer side of the fixed ring 14, the top end of the support rod A13 is installed on the lower surface of a fixed block A12, a fixed bolt 11 is arranged inside a fixed block A12, the top end of the fixed bolt 11 is fixed inside the bridge 4, a rubber block 126 is installed at the bulge of the other side of the fixed block B110, a moving block B133 is installed on the end surface of the other side of the rubber block 126, the rubber block 126 is located between the bulge of the other side of the fixed block B110 and the moving block B133, the bottom end of one side of the moving block B133 is connected with a fixed block D124 through a spring C134, a limit column C125 is installed at each end inside of the spring C134, the limit column C125 and the spring C134 are both located between the fixed block D124 and the moving block B133, a fixed block C122 is installed on the upper surface of the fixed block D124, a support rod C123 is installed at the center of the front end surface of the fixed block C122, a tension spring B121 is installed on the outer wall of the support rod C123, the other end of the tension spring B121 is mounted on the outer wall of the support rod B120, the support rod B120 is mounted on the moving block A119, a groove B129 is formed in one side end face of the moving block B133, a fixing rod A130 is mounted inside the groove B129, a bearing B131 is mounted in the center of the outer wall of the fixing rod A130, a connecting plate 132 is mounted on the outer side wall of the bearing B131, the other end of the connecting plate 132 is connected with a fixing rod B135 through a bearing A127, the fixing rod B135 is mounted on the moving block A119, a guide groove 128 is formed in the center of the upper surface of the moving block A119, a guide column 117 is mounted inside the guide groove 128, the top end of the guide column 117 is mounted at the top end of the groove A116, the groove A116 is disposed at the bottom end of the other side of the protrusion of the fixing block B110, a spring B118 is disposed on the outer wall of the guide column 117, the spring B118 is located between the groove A116 and the moving block A119, and a limiting mechanism B2 is composed of a mounting plate A21, a groove D22, Positioning column A23, mounting plate B24, moving plate 25, spring D26, slide bar 27, slider A28, groove E29, positioning column B210, through hole A211, through hole B212, connecting block A213, connecting rod A214, connecting block B215, support rod D216, connecting rod B217, connecting block C218 and slider B219, mounting plate B24 is installed at the center of the upper surface of bridge pier 3, mounting plate A21 is installed at the center of the lower surface of bridge 4, mounting plate A21 is located right above mounting plate B24, groove E29 is installed at the center of the lower surface of mounting plate A21, groove D22 is installed at both sides of the lower surface of mounting plate A21, moving plate 25 is installed inside mounting plate B24, positioning column B210 is installed at the center of the upper surface of moving plate 25, positioning column A23 is installed at both sides of the upper surface of moving plate 25, the top end of positioning column A23 passes through hole A211 on mounting plate B24 and is connected with groove D22, the top end of positioning column B36210 passes through hole B212 on mounting plate B24 and is connected with groove E29, a support rod D216 is arranged at the bottom end of the moving plate 25, a connecting block B215 is arranged at the bottom end of the support rod D216, end faces on two sides of the connecting block B215 are respectively connected with a connecting block A213 and a connecting block C218 through a connecting rod A214 and a connecting rod B217, the connecting block A213 and the connecting block C218 are respectively arranged on a slide block A28 and a slide block B219, a slide rod 27 is respectively arranged inside the slide block A28 and the slide block B219, two ends of the slide rod 27 are respectively arranged on the inner wall of a mounting plate B24, a spring D26 is arranged on the outer side wall of the slide rod 27, and spring D26 is located between two adjacent objects, bridge 4 is located directly over pier 3, bearing A127 and bearing B131 are all located the inside of connecting plate 132, through-hole A211 is seted up in the upper surface both sides of mounting panel B24, through-hole B212 is seted up in the upper surface central point of mounting panel B24 and reference column A23 and reference column B210 all match with the shape size of recess D22 and recess E29 each other.

The working principle is as follows: when the bridge 4 is installed by workers, the positioning column A23 is matched with the groove D22 in shape and size, the positioning column B210 is matched with the groove E29 in shape and size, the bridge 4 applies pressure to the positioning column A23 and the positioning column B210, so that the moving plate 25 moves downwards, the moving plate 25 moves leftwards and rightwards to the slider A28 and the slider B219 through the connecting rod A214 and the connecting rod B217, the slider A28 and the slider B219 compress the spring D26 on the sliding rod 27, the effects of positioning installation and buffering and shock absorption can be achieved when the bridge 4 is installed, the bridge 4 is prevented from transverse deviation after installation, after the bridge 4 is installed, the bridge 4 applies downward pressure to the supporting column 111, the supporting column 111 compresses the rubber column 112 and the spring A114, the effect of buffering and shock absorption can be achieved on the bridge 4, and the stability of the bridge is improved, when the bridge 4 is laterally turned over by external force, the bridge 4 stretches one side of the bridge 4 through the tension spring A15 and the steel wire rope 18, so that the situation that the bridge 4 is laterally turned over due to the fact that one side is excessively stressed is avoided, safety of personnel and a bridge body is protected, when the bridge 4 is laterally turned over, the side of the bridge 4 compresses the moving block B133, the moving block B133 compresses and moves the spring C134, the rubber block 126 and the connecting plate 132, the connecting plate 132 moves to enable the moving block A119 to move upwards, the moving block A119 moves upwards to enable the spring B118 to compress and the tension spring B121 to stretch, so that a buffering and damping effect can be generated on the bridge 4 when the bridge body is laterally turned over, the bridge 4 is prevented from laterally displacing due to the excessively high pressure of the bridge body, the limiting and buffering and damping effects are achieved, positioning and installation can be performed when the bridge is installed, and installation of workers on the bridge is facilitated, the utility model can also perform effective transverse limiting and buffering and damping effects on the bridge, avoid the side turning and the transverse displacement of the bridge and has strong practicability.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a bridge limit structure, includes pier (3), its characterized in that: the top of the pier (3) is connected with a bridge (4) through a limiting mechanism B (2), the pier (3) and the two sides of the bridge (4) are provided with limiting mechanisms A (1), and each limiting mechanism A (1) is composed of a fixing bolt (11), a fixing block A (12), a supporting rod A (13), a fixing ring (14), a tension spring A (15), a fixing plate A (16), a pull ring A (17), a steel wire rope (18), a pull ring B (19), a fixing block B (110), a supporting column (111), a rubber column (112), a limiting column A (113), a spring A (114), a limiting column B (115), a groove A (116), a guide column (117), a spring B (118), a moving block A (119), a supporting rod B (120), a tension spring B (121), a fixing block C (122), a supporting rod C (123), a fixing block D (124), a limiting column C (125), The bridge pier is characterized by comprising a rubber block (126), a bearing A (127), a guide groove (128), a groove B (129), a fixing rod A (130), a bearing B (131), a connecting plate (132), a moving block B (133), a spring C (134), a fixing rod B (135) and a groove C (136) which are combined, wherein the grooves C (136) are formed in two sides of the upper surface of the bridge pier (3), a supporting column (111) is installed inside the groove C (136), the top end of the supporting column (111) is tightly attached to the bottom end of the bridge (4), limiting columns B (115) are evenly arranged at the bottom end of the groove C (136) at intervals, rubber columns (112) are wrapped on the outer side outer wall of each limiting column B (115), springs A (114) are arranged between every two adjacent rubber columns (112), a limiting column A (113) is arranged at the bottom end of the spring A (114), and the bottom ends of the limiting columns A (113) are fixed to the bottom end of the groove C (136), the top ends of the spring A (114) and the rubber column (112) are tightly attached to the bottom end of the supporting column (111), the spring A (114) and the rubber column (112) are located between the supporting column (111) and the groove C (136), a fixed block B (110) is installed on one side of the upper surface of the pier (3), a pull ring B (19) is arranged at a bulge on one side of the fixed block B (110), a steel wire rope (18) is installed on the outer wall of the pull ring B (19), the other end of the steel wire rope (18) is installed on a pull ring A (17), two ends of the pull ring A (17) are installed on a fixed plate A (16), a tension spring A (15) is arranged on the upper surface of the fixed plate A (16), the other end of the tension spring A (15) is fixed on the fixed ring (14), and a supporting rod A (13) is arranged on the outer wall of the outer side of the fixed ring (14), the top end of the supporting rod A (13) is installed on the lower surface of a fixing block A (12), a fixing bolt (11) is arranged inside the fixing block A (12), the top end of the fixing bolt (11) is fixed inside a bridge (4), a rubber block (126) is installed at the bulge position of the other side of the fixing block B (110), a moving block B (133) is installed on the end face of the other side of the rubber block (126), the rubber block (126) is located between the bulge position of the other side of the fixing block B (110) and the moving block B (133), the bottom end of one side of the moving block B (133) is connected with a fixing block D (124) through a spring C (134), limiting columns C (125) are installed at two ends inside the spring C (134), the limiting columns C (125) and the spring C (134) are located between the fixing block D (124) and the moving block B (133), and a fixing block C (122) is installed on the upper surface of the fixing block D (124), a support rod C (123) is mounted at the center of the end face of the front end face of the fixed block C (122), a tension spring B (121) is mounted on the outer wall of the support rod C (123), the other end of the tension spring B (121) is mounted on the outer wall of the support rod B (120), the support rod B (120) is mounted on a movable block A (119), a groove B (129) is formed in the end face of one side of the movable block B (133), a fixed rod A (130) is mounted inside the groove B (129), a bearing B (131) is mounted at the center of the outer wall of the fixed rod A (130), a connecting plate (132) is mounted on the outer side outer wall of the bearing B (131), the other end of the connecting plate (132) is connected with the fixed rod B (135) through a bearing A (127), the fixed rod B (135) is mounted on the movable block A (119), a guide groove (128) is formed in the center of the upper surface of the movable block A (119), the guide mechanism comprises a guide groove (128), a guide post (117) is arranged inside the guide groove (128), the top end of the guide post (117) is arranged at the top end of the inside of a groove A (116), the groove A (116) is arranged at the bottom end of the protrusion on the other side of a fixed block B (110), a spring B (118) is arranged on the outer wall of the outer side of the guide post (117), the spring B (118) is located between the groove A (116) and a moving block A (119), and the limiting mechanism B (2) is composed of a mounting plate A (21), a groove D (22), a positioning post A (23), a mounting plate B (24), a moving plate (25), a spring D (26), a sliding rod (27), a sliding block A (28), a groove E (29), a positioning post B (210), a through hole A (211), a through hole B (212), a connecting block A (213), a connecting rod A (214), a connecting block B (215), a supporting rod D (216), a connecting rod B (217), Connecting block C (218) and slider B (219), the upper surface central point of pier (3) puts and installs mounting panel B (24), the lower surface central point of bridge (4) puts and installs mounting panel A (21), and mounting panel A (21) is located mounting panel B (24) directly over, the lower surface central point of mounting panel A (21) puts and is provided with recess E (29), the lower surface both sides of mounting panel A (21) all are provided with recess D (22), the inside of mounting panel B (24) is provided with movable plate (25), the upper surface central point of movable plate (25) puts and installs reference column B (210), reference column A (23) are all installed to the upper surface both sides of movable plate (25), the top of reference column A (23) all passes through-hole A (211) on mounting panel B (24) and is connected with recess D (22), the top end of the positioning column B (210) passes through a through hole B (212) on the mounting plate B (24) to be connected with the groove E (29), a support rod D (216) is arranged at the bottom end of the moving plate (25), a connecting block B (215) is arranged at the bottom end of the support rod D (216), the end surfaces of the two sides of the connecting block B (215) are respectively connected with the connecting block A (213) and the connecting block C (218) through a connecting rod A (214) and a connecting rod B (217), the connecting block A (213) and the connecting block C (218) are respectively arranged on the sliding block A (28) and the sliding block B (219), a slide rod (27) is arranged in each of the slide block A (28) and the slide block B (219), both ends of the sliding rod (27) are arranged on the inner wall of the mounting plate B (24), and a spring D (26) is arranged on the outer side outer wall of the sliding rod (27), and the spring D (26) is positioned between two adjacent objects.

2. A bridge limiting structure according to claim 1, wherein: the bridge (4) is located right above the bridge pier (3).

3. A bridge limiting structure according to claim 1, characterized in that: the bearing A (127) and the bearing B (131) are both positioned inside the connecting plate (132).

4. A bridge limiting structure according to claim 1, wherein: the through holes A (211) are formed in two sides of the upper surface of the mounting plate B (24).

5. A bridge limiting structure according to claim 1, wherein: the through hole B (212) is formed in the center of the upper surface of the mounting plate B (24).

6. A bridge limiting structure according to claim 1, wherein: the positioning column A (23) and the positioning column B (210) are matched with the grooves D (22) and the grooves E (29) in shape and size.

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