A bridge anti-collision guardrail connection device

Abstract

The present invention discloses a bridge anti-collision guardrail connecting device, comprising a connecting sleeve arranged on the outside of a guardrail cross bar, and the connecting sleeve is used to connect adjacent guardrail cross bars, and a column for supporting the guardrail cross bars is installed on the bridge. The bridge anti-collision guardrail connecting device, through a connecting sleeve arranged between adjacent cross bars of the guardrail, a plurality of anti-collision tubes arranged on the connecting sleeve and a support member connected to the anti-collision tubes, can not only play an effective role in buffering and preventing collision when the guardrail is hit by a bridge deck vehicle, but also the support member is connected to the guard plate through a pushing member and a guard member, so as to further improve the anti-collision performance of the guardrail. At the same time, the guard plate is arranged at the bridge span, and can play a role in buffering and guiding ships to prevent the ships from hitting the bridge span, and at the same time, under the connection action of the support member, the anti-collision performance of the guard plate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering, and in particular to a bridge anti-collision guardrail connecting device. Background Art

[0002] A bridge generally refers to a structure built across rivers, lakes, and seas to enable vehicles, pedestrians, etc. to pass smoothly.

[0003] Bridge guardrails refer to the guardrails installed on bridges. Their purpose is to prevent out-of-control vehicles from going over the bridge. They have the functions of preventing vehicles from breaking through, passing under, or climbing over the bridge and beautifying the bridge structure.

[0004] At present, the existing bridge guardrails are mainly set on both sides of the bridge to protect the pier structure. For example, the existing patent application number: CN202010373648.9 discloses: a telescopic connection component on a bridge steel anti-collision guardrail. In this device, a connection structure is set to connect the guardrail so that the guardrail can be extended and retracted horizontally, and the sliding can be changed to rolling while extending and retracting. However, this telescopic connection component is only suitable for telescopic connection when the bridge itself is under load, and its anti-collision performance is poor when the guardrail is hit by external forces such as vehicles.

[0005] And the existing patent application: CN202010606535.9, discloses: a flank-type anti-collision device for bridges, that is, existing bridges are all equipped with guardrails for protection, and for the bridge span, ships can often pass through the water surface below the bridge span. However, due to some occasions, ships may collide with the bridge, such as when the water level is high or the bridge height is low, the ship will collide with the bridge span, which will cause damage to the bridge. In this patent application, although an anti-collision protection device is provided at the bridge span, the device is relatively slidably arranged on the side wall of the bridge span at both ends. Although it plays a role of buffering and shock absorption when the ship collides with it, the device will continuously change its position relative to the side wall of the bridge span while deforming, and since the position of the ship at the bottom of the bridge is uncertain each time it passes, the protection performance of the bridge is poor. For this reason, we propose a bridge anti-collision guardrail connection device. Summary of the invention

[0006] The object of the present invention is to provide a bridge anti-collision guardrail connecting device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a bridge anti-collision guardrail connecting device, comprising a connecting sleeve arranged on the outside of a guardrail crossbar, and the connecting sleeve is used to connect adjacent guardrail crossbars, a column for supporting the guardrail crossbar is installed on the bridge, the left end of the connecting sleeve is slidably sleeved on the left crossbar, and the right end of the connecting sleeve is fixedly sleeved on the outside of the right crossbar;

[0008] A buffer member is provided inside the connecting sleeve for connecting the left cross bar with the right cross bar;

[0009] A plurality of anti-collision sleeves are provided at equal distances on one side of the connecting sleeve close to the bridge deck, and a connecting plate is installed inside the connecting sleeve, and a supporting member for supporting the anti-collision sleeve is provided on the connecting plate;

[0010] A pushing member is connected between the two supporting members, a protecting member is connected between the two pushing members, the bottom of the protecting member extends to the bridge span, and a plurality of protecting members are mutually connected with protecting plates.

[0011] Preferably, the buffer member comprises a first connecting block and a second connecting block which are respectively fixedly connected to the left cross bar and the right cross bar, and a buffer spring is fixedly connected between the first connecting block and the second connecting block;

[0012] The first connecting block is provided with a groove, and a support shaft is fixedly connected to the groove. A connecting roller is rotatably sleeved on the outer side of the support shaft, and the connecting roller is slidably arranged on the inner side of the connecting sleeve. Through the buffer provided, the function of connecting two adjacent cross bars is realized.

[0013] Preferably, one end of the anti-collision cylinder is slidably connected to the connecting sleeve, and the support member is located inside the anti-collision cylinder.

[0014] Preferably, the support member includes two moving rods that slide through the connecting plate, the two moving rods are located on the outside of the cross bar, one end of the two moving rods is connected to the pushing member, and the other ends of the two moving rods are fixedly connected to each other with guide rods, and a connecting member is provided between the guide rod and the anti-collision cylinder, so that the function of supporting and guiding the anti-collision cylinder is achieved through the provided support member.

[0015] Preferably, the connecting member comprises a plurality of connecting springs fixedly connected between the guide rod and the anti-collision cylinder, the guide rod is provided with a moving opening, and a first inclined plate is slidably penetrated through the moving opening, and the two ends of the first inclined plate are respectively fixedly connected to the second inclined plates, and the two second inclined plates are installed on the first inclined plate in opposite directions;

[0016] The outer sides of the two second inclined plates are both slidably connected with inclined blocks, and the two inclined blocks are fixedly installed inside the anti-collision cylinder, and the connection between the guide rod and the anti-collision cylinder is achieved through the provided connecting piece.

[0017] Preferably, the pushing member comprises two pushing plates respectively fixedly connected to the bottom of the four moving rods, and one end of the two pushing plates away from the connecting block is inclined;

[0018] The protective member is located between the four pushing plates, and the protective member is pushed by the provided pushing member.

[0019] Preferably, the protective member comprises an intermediate plate slidably connected between the four push plates, and the inclined shapes of the two ends of the intermediate plate correspond to the two ends of the push plates;

[0020] An extension rod is fixedly connected to one side of the middle plate, and one end of the extension rod is fixedly connected to the extension plate through a connecting sleeve, the bottom of the extension plate is fixedly connected to the protective plate, and a guide port for moving the extension rod is provided on the connecting sleeve;

[0021] A positioning piece is connected to the other side of the middle plate, and a positioning opening for the positioning piece to pass through is provided on the cross bar, and the protective piece is provided to effectively protect the bridge span.

[0022] Preferably, the positioning member comprises a positioning rod fixedly connected to one side of the middle plate, a positioning tube is slidably sleeved on the outer side of one end of the positioning rod, and the positioning tube passes through the positioning opening;

[0023] One end of the positioning rod located inside the positioning cylinder is fixedly connected to a positioning block, and a positioning spring is fixedly connected between the positioning block and the positioning cylinder, and a locking piece is provided between the positioning block and the inner wall of the positioning cylinder;

[0024] The end of the positioning cylinder away from the positioning rod is fixedly connected with a moving block, and a limiting opening for moving the moving block is provided on the connecting plate, a limiting piece for connecting the moving block is provided at the limiting opening, and a positioning piece is provided on the cylinder to realize the positioning of the middle plate.

[0025] Preferably, the locking member includes a connecting groove arranged on the positioning block, and a locking spring is fixedly connected inside the connecting groove, one end of the locking spring is fixedly connected to the locking block, and the inner wall of the positioning cylinder is provided with a clamping groove which is clamped with the locking block, and the relative locking effect between the positioning block and the positioning cylinder is achieved through the provided locking member.

[0026] Preferably, the limiting member comprises a limiting rod that slides through the moving block, and both ends of the limiting rod are fixedly connected to the limiting opening;

[0027] The two sides of the limit opening are respectively fixedly connected with limit springs, and the ends of the two limit springs close to each other are respectively fixedly connected with the moving blocks, and the limit springs are sleeved on the outside of the limit rod, and through the limit piece provided, the moving block is guided and limited.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. When the present invention is in use, the connecting sleeve provided between the adjacent cross bars of the guardrail, the multiple anti-collision tubes provided on the connecting sleeve and the supporting member connecting the anti-collision tubes can not only play an effective role in buffering and preventing collision when the guardrail is hit by a vehicle on the bridge deck, but also the supporting member is connected to the guardrail through the pushing member and the protective plate of the protective member, so as to further improve the anti-collision performance of the guardrail. At the same time, the protective plate is arranged at the bridge span, and can play a role in buffering and guiding the ship to prevent the ship from colliding with the bridge span. At the same time, under the connection action of the supporting member, the anti-collision performance of the protective plate is increased.

[0030] 2. When the present invention is in use, the buffer connector is provided between adjacent cross bars, so that the guardrail can be telescopically deformed according to the structure of the bridge itself, thereby further improving the protection performance of the bridge;

[0031] 3. The present invention provides a plurality of protective plates with relatively fixed positions, which can protect the bridge span. At the same time, when a ship collides with the protective plate, the anti-collision performance of the guardrail at the bridge span is effectively improved, and the deviation of the protective plate is prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the column structure of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the anti-collision cylinder of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the connecting sleeve of the present invention;

[0036] Figure 5 This is a schematic diagram of the internal structure of the connecting sleeve of the present invention;

[0037] Figure 6 It is a schematic diagram of the crossbar structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the internal structure of the anti-collision cylinder of the present invention;

[0039] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of the middle A area;

[0040] Fig. 9 This is a schematic diagram of the push plate structure of the present invention;

[0041] Fig.10 It is a schematic diagram of the structure of the locking member of the present invention;

[0042] Fig.11 This is a structural diagram of Embodiment 2 of the present invention.

[0043] In the figure: 1-connecting sleeve; 11-cross bar; 111-positioning opening; 12-post; 13-connecting plate; 131-limiting opening; 14-guide opening; 2-buffer; 21-first connecting block; 22-second connecting block; 23-buffer spring; 24-support shaft; 25-connecting roller; 3-anti-collision cylinder; 4-support; 41-moving rod; 42-guide rod; 421-moving opening; 43-connecting member; 431-connecting spring; 432-first inclined plate; 433-second inclined plate; 434-inclined block; 5-pushing member; 51-pushing plate; 6-protecting member; 61-middle plate; 62-extension rod; 63-extension plate; 64-positioning member; 641-positioning rod; 642-positioning cylinder; 643-positioning block; 644-positioning spring; 645-moving block; 7-protecting plate; 8-locking member; 81-locking spring; 82-locking block; 9-limiting member; 91-limiting rod; 92-limiting spring; 10-extension shell. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-10 , Embodiment 1

[0046] A bridge anti-collision guardrail connecting device, comprising a connecting sleeve 1 arranged on the outside of a guardrail crossbar 11, and the connecting sleeve 1 is used to connect adjacent guardrail crossbars 11, a column 12 for supporting the guardrail crossbar 11 is installed on the bridge, the guardrail crossbar 11 is fixedly penetrated through the column 12, the left end of the connecting sleeve 1 is slidably sleeved on the left crossbar 11, and the right end of the connecting sleeve 1 is fixedly sleeved on the outside of the right crossbar 11, a buffer 2 for connecting the left crossbar 11 with the right crossbar 11 is provided inside the connecting sleeve 1, and the buffer 2 comprises a first connecting block 21 and a second connecting block 22 respectively fixedly connected to the left crossbar 11 and the right crossbar 11, and a buffer spring 23 is fixedly connected between the first connecting block 21 and the second connecting block 22;

[0047] The first connecting block 21 is provided with a groove, and a support shaft 24 is fixedly connected to the groove. A connecting roller 25 is rotatably sleeved on the outer side of the supporting shaft 24, and the connecting roller 25 is slidably arranged on the inner side of the connecting sleeve 1;

[0048] Specific implementation process: When the bridge itself is extended and retracted under load, the left cross bar 11 moves relative to the connecting sleeve 1 through the connecting roller 25. At the same time, under the action of the buffer spring 23, the load force on the bridge itself is reduced, while maintaining a certain amount of expansion and contraction of the bridge. At the same time, the roller setting effectively reduces the friction generated by adjacent cross bars 11 during movement.

[0049] A plurality of anti-collision cylinders 3 are equidistantly arranged on one side of the connecting sleeve 1 close to the bridge deck. The anti-collision cylinders 3 are irregular in shape and made of anti-collision materials. A reflective sticker can also be installed on one side of the anti-collision cylinder 3 located outside the connecting sleeve 1, which serves as a warning to passers-by and vehicles at night. A connecting plate 13 is installed inside the connecting sleeve 1, and a support member 4 for supporting the anti-collision sleeve is provided on the connecting plate 13. One end of the anti-collision cylinder 3 is slidably connected to the connecting sleeve 1, and the support member 4 is located inside the anti-collision cylinder 3.

[0050] The support member 4 includes two moving rods 41 that slide through the connecting plate 13. The two moving rods 41 are both located outside the cross bar 11. One end of the two moving rods 41 is connected to the pusher 5, and the other ends of the two moving rods 41 are fixedly connected to each other with a guide rod 42. The two ends of the guide rod 42 are cylindrical, and the middle position of the guide rod 42 is rectangular. A connecting member 43 is provided between the guide rod 42 and the anti-collision cylinder 3.

[0051] The connecting member 43 includes a plurality of connecting springs 431 fixedly connected between the guide rod 42 and the anti-collision cylinder 3, a moving opening 421 is provided on the guide rod 42, and a through hole is provided at a position corresponding to the guide rod 42 on the connecting plate 13, so that the guide rod 42 can move relative to the connecting plate 13, and a first inclined plate 432 is slidably penetrated at the moving opening 421, and two ends of the first inclined plate 432 are respectively fixedly connected to second inclined plates 433, and the two second inclined plates 433 are installed on the first inclined plate 432 in opposite directions;

[0052] The outer sides of the two second inclined plates 433 are both slidably connected with inclined blocks 434, and the two inclined blocks 434 are fixedly installed inside the anti-collision cylinder 3;

[0053] A pushing member 5 is connected between the two supporting members 4, a protective member 6 is connected between the two pushing members 5, the bottom of the protective member 6 extends to the bridge span, and multiple protective members 6 are connected to each other with a protective plate 7, which is an arc-shaped memory alloy plate with a certain degree of compression.

[0054] The push member 5 includes two push plates 51 respectively fixedly connected to the bottom of the four moving rods 41, and one end of the two push plates 51 away from the connection block is inclined;

[0055] The protection member 6 is located between the four push plates 51 .

[0056] The protective member 6 includes an intermediate plate 61 slidably connected between the four push plates 51, and the inclined shapes of the two ends of the intermediate plate 61 correspond to the two ends of the push plates 51;

[0057] An extension rod 62 is fixedly connected to one side of the middle plate 61, and one end of the extension rod 62 is fixedly connected to an extension plate 63 through the connecting sleeve 1, and the cross bar 11 is located on the column 12 and is provided with multiple groups from top to bottom, and each row of extension rods 62 is fixedly connected to the corresponding extension plate 63, and then when one of the extension rods 62 is subjected to a force, the force is applied to the remaining extension rods 62 through the extension plate 63, and the bottom of the extension plate 63 is fixedly connected to the protective plate 7, and a guide port 14 for moving the extension rod 62 is provided on the connecting sleeve 1, and as a preferred embodiment, a telescopic sleeve can also be provided between the extension rod 62 and the inner wall of the guide port, and the telescopic sleeve moves synchronously with the movement of the extension rod 62, and the telescopic sleeve is made of anti-corrosion material to protect the guide port 14;

[0058] A positioning member 64 is connected to the other side of the middle plate 61, and a positioning opening 111 is provided on the cross bar 11 for the positioning member 64 to pass through;

[0059] The positioning member 64 includes a positioning rod 641 fixedly connected to one side of the middle plate 61, and a positioning tube 642 is slidably sleeved on the outer side of one end of the positioning rod 641, and the positioning tube 642 passes through the positioning opening 111;

[0060] One end of the positioning rod 641 located inside the positioning cylinder 642 is fixedly connected to a positioning block 643, and a positioning spring 644 is fixedly connected between the positioning block 643 and the positioning cylinder 642. A locking member 8 is provided between the positioning block 643 and the inner wall of the positioning cylinder 642. The locking member 8 includes a connecting groove provided on the positioning block 643, and a locking spring 81 is fixedly connected inside the connecting groove. One end of the locking spring 81 is fixedly connected to a locking block 82, and the inner wall of the positioning cylinder 642 is provided with a locking member 82. The locking block 82 is engaged with the engaging groove 6421. Under the action of the locking spring 81, the positioning block 643 and the positioning cylinder 642 are relatively fixed. That is, when the Y-axis force applied to the positioning block 643 is small, the locking block 82 is still stuck in the engaging groove 6421. Only when the Y-axis force applied to the positioning block 643 is large, the locking block 82 is separated from the engaging groove 6421. Then the positioning rod 641 can move relative to the positioning cylinder 642.

[0061] The end of the positioning tube 642 away from the positioning rod 641 is fixedly connected with a moving block 645 , and a limiting opening 131 for moving the moving block 645 is provided on the connecting plate 13 , and a limiting member 9 for connecting the moving block 645 is provided at the limiting opening 131 .

[0062] The limiting member 9 includes a limiting rod 91 that slides through the moving block 645, and both ends of the limiting rod 91 are fixedly connected to the limiting opening 131;

[0063] The limiting springs 92 are fixedly connected to both sides of the limiting opening 131 , and the ends of the two limiting springs 92 close to each other are fixedly connected to the moving blocks 645 , respectively. The limiting springs 92 are sleeved on the outside of the limiting rod 91 .

[0064] Specific implementation process: When the guardrail is hit by a vehicle, at this time, since the anti-collision cylinder 3 is relatively protrudingly arranged on the connecting sleeve 1, the vehicle first contacts the anti-collision cylinder 3, and when the anti-collision cylinder 3 at one of the pushing plates 51 on the cross bar 11 is hit, the anti-collision cylinder 3 moves along the connecting sleeve 1, and while moving, a plurality of connecting springs 431 provide reverse elastic force to reduce the impact force on the anti-collision cylinder 3, and while the anti-collision cylinder 3 moves along the connecting sleeve 1, the two inclined blocks 434 inside Under the guiding action, the two second inclined plates 433 further drive the first inclined plate 432 to move, and when the first inclined plate 432 moves, due to the limiting action of the moving opening 421 of the guide rod 42, the guide rod 42 is further moved along the direction of the anti-collision cylinder 3, so as to further compress the connecting spring 431 and increase the reverse elastic force of the connecting spring 431. At the same time, when the guide rod 42 moves, it drives the push plate 51 to move along the bridge deck direction through the moving rods 41 at both ends;

[0065] When the push plate 51 moves, it further pushes the middle plate 61 through the inclined end surface of the push plate 51, so that the force is transmitted to the middle plate 61. At this time, the middle plate 61 acts on the limit spring 92 on the one hand, that is, the limit spring 92 is squeezed by the moving block 645. On the other hand, the middle plate 61 presses the push plate 51 on the other side to move the push plate 51 on the other side. At the same time, the middle plate 61 squeezes the protective plate 7 while moving laterally along the connecting sleeve 1, and the protective plate 7 generates a reverse elastic force, thereby reducing the impact force on the guardrail itself in many aspects, and effectively improving its anti-collision performance.

[0066] When the multiple anti-collision cylinders 3 at the two groups of push plates 51 outside the cross bar 11 on one side of the guardrail are hit, the four push plates 51 on both sides of the middle plate 61 move inside the connecting sleeve 1 along the bridge deck, that is, both sides of the middle plate 61 are subjected to force at the same time. At this time, the locking block 82 at the positioning rod 641 on the middle plate 61 disengages from the clamping groove 6421, so that the positioning block 643 moves relatively along the inside of the positioning cylinder 642, and the positioning spring 644 generates a reverse elastic force, further reducing the impact force on the push rods on both sides and the anti-collision cylinders 3 thereon. At the same time, when the middle plate 61 moves along the Y-axis direction, it drives the guard plate 7 to deform. At this time, the guard plate 7 generates a reverse elastic force, further reducing the impact force on the guardrail itself.

[0067] When the ship moves to the bridge span and hits the guard plate 7, the guard plate 7 is deformed and the impact force is applied to the limit spring 92 and the push plate 51. The limit spring 92 generates a reverse elastic force. At the same time, the push plate 51 applies force to the connecting spring 431 through the moving rod 41 and the guide rod 42, further reducing the impact force on the guard plate 7, thereby reducing the impact force on the guardrail.

[0068] See also Fig.11 , Embodiment 2

[0069] What is different from the first embodiment is that the bottom of the extension plate 63 is slidably connected to the extension shell 10, and one end of the protective plate 7 is fixedly connected to the extension shell 10, and the extension shell 10 is threadedly connected with a locking bolt for locking the extension plate 63, so that by adjusting the locking bolt, the length of the extension plate 63 and the extension shell 10 can be further adjusted, so that the protective plate 7 can be adjusted to different height positions of the bridge span.

[0070] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge anti-collision guardrail connecting device, comprising a connecting sleeve (1) arranged outside a guardrail crossbar (11), and the connecting sleeve (1) is used to connect adjacent guardrail crossbars (11), and a column (12) for supporting the guardrail crossbar (11) is installed on the bridge, characterized in that: The left end of the connecting sleeve (1) is slidably sleeved on the left cross bar (11), and the right end of the connecting sleeve (1) is fixedly sleeved on the outside of the right cross bar (11); A buffer member (2) is provided inside the connecting sleeve (1) for connecting the left crossbar (11) with the right crossbar (11); A plurality of anti-collision sleeves (3) are provided at equal distances on a side of the connecting sleeve (1) close to the bridge deck, and a connecting plate (13) is installed inside the connecting sleeve (1), and a supporting member (4) for supporting the anti-collision sleeve is provided on the connecting plate (13); A pushing member (5) is connected between the two supporting members (4), a protecting member (6) is connected between the two pushing members (5), the bottom of the protecting member (6) extends to the bridge span, and a plurality of protecting members (6) are mutually connected with a protecting plate (7); The support member (4) comprises two moving rods (41) which slide through the connecting plate (13), the two moving rods (41) are both located outside the cross bar (11), one end of the two moving rods (41) is connected to the pushing member (5), and the other ends of the two moving rods (41) are fixedly connected to guide rods (42), and a connecting member (43) is provided between the guide rod (42) and the anti-collision cylinder (3); The connecting member (43) comprises a plurality of connecting springs (431) fixedly connected between the guide rod (42) and the anti-collision cylinder (3); a moving opening (421) is provided on the guide rod (42); a first inclined plate (432) slides through the moving opening (421); and second inclined plates (433) are fixedly connected to both ends of the first inclined plate (432); the two second inclined plates (433) are installed on the first inclined plate (432) in opposite directions; The outer sides of the two second inclined plates (433) are both slidably connected to inclined blocks (434), and the two inclined blocks (434) are fixedly installed inside the anti-collision cylinder (3); The pushing member (5) comprises two pushing plates (51) respectively fixedly connected to the bottoms of the four moving rods (41), and one end of the two pushing plates (51) away from the connecting block is inclined; The protective member (6) is located between the four pushing plates (51).

2. A bridge anti-collision guardrail connection device according to claim 1, characterized in that: The buffer member (2) comprises a first connection block (21) and a second connection block (22) which are respectively fixedly connected to the left cross bar (11) and the right cross bar (11), and a buffer spring (23) is fixedly connected between the first connection block (21) and the second connection block (22); The first connection block (21) is provided with a groove, and a support shaft (24) is fixedly connected to the groove. A connection roller (25) is rotatably sleeved on the outer side of the support shaft (24), and the connection roller (25) is slidably arranged on the inner side of the connection sleeve (1).

3. A bridge anti-collision guardrail connection device according to claim 1, characterized in that: One end of the anti-collision cylinder (3) is slidably connected to the connecting sleeve (1), and the support member (4) is located inside the anti-collision cylinder (3).

4. A bridge anti-collision guardrail connection device according to claim 1, characterized in that: The protective member (6) comprises an intermediate plate (61) slidably connected between the four push plates (51), and the inclined shapes of the two ends of the intermediate plate (61) correspond to the two ends of the push plates (51); An extension rod (62) is fixedly connected to one side of the middle plate (61), and one end of the extension rod (62) passes through a connecting sleeve (1) and is fixedly connected to an extension plate (63); the bottom of the extension plate (63) is fixedly connected to the protective plate (7); and a guide opening (14) for moving the extension rod (62) is provided on the connecting sleeve (1); The other side of the middle plate (61) is connected to a positioning piece (64), and the cross bar (11) is provided with a positioning opening (111) for the positioning piece (64) to pass through.

5. A bridge anti-collision guardrail connection device according to claim 4, characterized in that: The positioning member (64) comprises a positioning rod (641) fixedly connected to one side of the middle plate (61); a positioning tube (642) is slidably sleeved on the outer side of one end of the positioning rod (641), and the positioning tube (642) passes through the positioning opening (111); One end of the positioning rod (641) located inside the positioning cylinder (642) is fixedly connected to a positioning block (643), and a positioning spring (644) is fixedly connected between the positioning block (643) and the positioning cylinder (642), and a locking member (8) is provided between the positioning block (643) and the inner wall of the positioning cylinder (642); A moving block (645) is fixedly connected to one end of the positioning cylinder (642) away from the positioning rod (641), and a limiting opening (131) for moving the moving block (645) is provided on the connecting plate (13), and a limiting member (9) for connecting the moving block (645) is provided at the limiting opening (131).

6. A bridge anti-collision guardrail connection device according to claim 5, characterized in that: The locking member (8) comprises a connecting groove arranged on the positioning block (643), and a locking spring (81) is fixedly connected inside the connecting groove, one end of the locking spring (81) is fixedly connected to the locking block (82), and the inner wall of the positioning cylinder (642) is provided with a clamping groove (6421) clamped with the locking block (82).

7. A bridge anti-collision guardrail connection device according to claim 6, characterized in that: The limiting member (9) comprises a limiting rod (91) that slides through the moving block (645), and both ends of the limiting rod (91) are fixedly connected to the limiting opening (131); The limiting springs (92) are fixedly connected to both sides of the limiting opening (131), and the ends of the two limiting springs (92) close to each other are fixedly connected to the moving blocks (645), and the limiting springs (92) are sleeved on the outside of the limiting rod (91).

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