Bridge guardrail connection assembly

Abstract

The application discloses a bridge guardrail connecting assembly and belongs to the technical field of bridge anti-collision guardrails, and solves the problem that the bridge guardrail connecting assembly cannot be reused and the installation risk is high. The bridge guardrail connecting assembly comprises a back plate, a rib plate, a seam covering iron sheet, a clamping device, a tensioning auxiliary device, a center positioning device and a release limiting device; the back part of the seam covering iron sheet is fixed with the rib plate, and the rib plate and the back plate are connected through the clamping device. The bridge guardrail connecting assembly provided by the application is arranged in the space formed by the back plate, the seam covering iron sheet and the bridge gap through the clamping device, the tensioning auxiliary device and the center positioning device, so that each device is not eroded by rain and wind sand, and the reuse rate of the bridge guardrail connecting assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge anti-collision guardrails, and particularly relates to a bridge guardrail connecting assembly. BACKGROUND

[0002] The bridge guardrail connecting assembly refers to a connecting device provided for maintaining the continuity of the shape of a bridge guardrail after the bridge guardrail is disconnected at a bridge expansion joint.

[0003] A common concrete guardrail connecting device is provided with a fixed plate in the manner that a pre-buried anchor is arranged on the inner surface of the concrete guardrail on both sides of the expansion joint (close to the side of the driving lane), and a magnetic attraction element is arranged on the fixed plate to attract a sliding cover plate arranged at the disconnected position of the inner surface of the guardrail, and the sliding cover plate protects the disconnected position of the concrete guardrail.

[0004] Such a concrete guardrail connecting device has some disadvantages: the end of the concrete guardrail on both sides of the expansion joint needs to be provided with a pre-buried part, which is not conducive to the overall pouring of the guardrail and needs to be separately made into a formwork; and the sliding cover plate at the disconnected position of the inner surface of the guardrail is fixed by magnetic force, which is not firm enough.

[0005] The existing expansion joint cover plate solves the problem that the end of the concrete guardrail on both sides of the expansion joint needs to be provided with a pre-buried part by arranging a front cover plate, a pressing plate and a locking bolt, but the connecting device (locking bolt and locking nut) of the expansion joint cover plate is located on the outer surface of the expansion joint cover plate and is easily eroded and oxidized by rainwater, cannot be reused, and when the expansion joint cover plate is installed, the locking bolt and the locking nut need to be operated by the operator climbing over the bridge, which increases the safety risk of the operator during installation. Therefore, the bridge guardrail connecting assembly cannot be reused, the risk is high during installation, and the stability is low after installation, which are problems to be solved in the existing technical field of bridge anti-collision guardrails. SUMMARY

[0006] In view of the above analysis, the present application aims to provide a bridge guardrail connecting assembly to solve the problem that the bridge guardrail connecting assembly in the prior art cannot be reused and has a high risk during installation.

[0007] The main purpose of the present application is achieved by the following technical solutions:

[0008] The present application provides a bridge guardrail connecting assembly, which comprises a back plate, a rib plate, a joint cover iron sheet, a clamping device, a tensioning auxiliary device, a centering positioning device and a disengaging limiting device; the back of the joint cover iron sheet is fixed with the rib plate, and the rib plate and the back plate are connected through the clamping device.

[0009] The clamping device comprises a first bearing seat, a tensioning execution component and a rotating component; a plurality of first bearing seats are fixed on the back plate, one side of the first bearing seat is provided with a plurality of tensioning execution components, and the plurality of tensioning execution components are driven through the rotating component.

[0010] Furthermore, the tensioning actuator includes a gear column, a one-way inclined tooth, a circular groove, a first rod, a first telescopic spring, and a first limiting tooth; the gear column has a circular groove inside, and multiple one-way inclined teeth are fixed at the upper and lower ends of the circular groove, with the inclined surface of the one-way inclined tooth facing the rib plate side; a part of the first rod is located in the circular groove, and square grooves are symmetrically arranged inside the first rod, with a first telescopic spring installed in each of the square grooves, and the first telescopic spring is connected to the first limiting tooth.

[0011] Furthermore, stabilizing plates are fixed on the upper and lower sides of the circular groove, and the inner diameter of the stabilizing plates is the same as the diameter of the first rod.

[0012] Furthermore, the rotating component includes a closed rack, a drive gear, a drive rod, and a first external hexagonal prism; the first external hexagonal prism is fixed on one side of the drive gear, and the drive rod is fixed on the other side of the drive gear. The drive rod is connected to the rib plate through a third bearing seat. A closed rack meshes with the outer side of the drive gear, and the closed rack meshes with the gear prism.

[0013] Furthermore, the tensioning auxiliary device includes a hook, a rope, and a rope channel; the hook is fixed to the back plate, and the rope channel is opened inside the back plate and the gap-sealing sheet metal.

[0014] Furthermore, the rope can be pushed and pulled within the rope channel.

[0015] Furthermore, both ends of the rope channel are rounded.

[0016] Furthermore, the centering positioning device includes a lifting clamp, a vertical plate, a spring plate, and a steel cable; multiple vertical plates are fixed to the lower end of the rib plate, and spring plates are fixed to both sides of the bottom of the vertical plate; the lifting clamp is slidably connected to the rib plate; and steel cables are installed on both sides of the lifting clamp.

[0017] Furthermore, a semi-circular groove is provided on the rib plate, and a slider that cooperates with the semi-circular groove is fixed inside the lifting clamp plate.

[0018] Furthermore, the shape of the caulking sheet matches the surface of the bridge railing.

[0019] Furthermore, the release limiting device includes a second bearing seat, a hollow roller, a keyway, an active engagement disc, a passive engagement disc, a keyed sliding cylinder, a second external hexagonal prism, a second telescopic spring, and a telescopic rod; the hollow roller has a keyway inside, and a keyed sliding cylinder is slidably connected inside the hollow roller; a second external hexagonal prism is fixed to one side of the keyed sliding cylinder, and a second telescopic spring is installed inside the keyed sliding cylinder.

[0020] Furthermore, an active engagement disc is fixed on one side of the hollow roller, and a passive engagement disc is rotatably connected to one side of the keyed sliding cylinder.

[0021] Furthermore, the passive engagement disc is connected to the rib via a telescopic rod, and the hollow roller is connected to the rib via a second bearing seat.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] A) The bridge railing connection assembly provided by the present invention, by setting the clamping device, the tensioning auxiliary device and the centering positioning device in the space formed by the back plate, the sealing iron sheet and the bridge gap, ensures that each device is not eroded by rainwater and wind and sand, and improves the reusability of the bridge railing connection assembly.

[0024] B) The bridge railing connection assembly provided by the present invention can pull the first rod of the clamping device into the gear column through the tensioning auxiliary device to achieve clamping of the back plate and the sealing iron sheet. During the entire clamping process, the operator only needs to operate on the bridge, avoiding the problem of the operator working at height and reducing the installation risk of the operator.

[0025] C) The bridge railing connecting assembly provided by the present invention has a centering positioning device. The centering positioning device can keep the bridge railing connecting assembly always in the middle of the bridge gap, preventing the bridge railing connecting assembly from shifting to one side of the bridge gap. At the same time, the symmetrically arranged spring plates of the centering positioning device contact the side wall of the bridge gap. The spring plates are inclined upward and have a tendency to move towards the side wall they contact. Therefore, when the bridge railing connecting assembly is subjected to an upward force, it cannot move upward under the limitation of the spring plates, thus having good stability.

[0026] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0028] Figure 1 This is a schematic diagram of the structure of the bridge railing connection component of the present invention. Figure 1 .

[0029] Figure 2 This is a schematic diagram of the structure of the bridge railing connection component of the present invention. Figure 2 .

[0030] Figure 3 This is a structural schematic diagram of the clamping device of the bridge railing connection assembly of the present invention.

[0031] Figure 4 This is a schematic diagram of the tensioning actuator of the bridge railing connection assembly of the present invention. Figure 1 .

[0032] Figure 2 This is a schematic diagram of the tensioning actuator of the bridge railing connection assembly of the present invention. Figure 6 .

[0033] Figure 7 This is a structural schematic diagram of the tensioning auxiliary device for the bridge railing connection assembly of the present invention.

[0034] Figure 8 This is a structural schematic diagram of the centering positioning device of the bridge railing connection assembly of the present invention.

[0035] Figure 9 This is a schematic diagram of the structure of the release limit device of the bridge railing connection assembly of the present invention.

[0036] Figure 1 This is a schematic diagram of the rotating component of the bridge railing connection assembly of the present invention.

[0037] Figure label:

[0038] 1. Back plate; 2. Seam-sealing sheet metal; 3. Clamping device; 4. Tensioning auxiliary device; 5. Centering positioning device; 6. Limit release device; 7. Rib plate;

[0039] 3a. First bearing housing; 3b. Tensioning actuator; 3c. Rotating actuator;

[0040] 3b1. Gear post, 3b2. One-way tilting tooth, 3b3. Circular groove, 3b4. Stabilizing plate, 3b5. First rod, 3b6. First telescopic spring, 3b7. First limiting tooth;

[0041] 3c1. Closed rack, 3c2. Drive gear, 3c3. Drive rod, 3c4. First external hexagonal prism;

[0042] 4a1. Hook; 4b1. Rope passage;

[0043] 5a1. Lifting clamp, 5a2. Vertical plate, 5a3. Spring plate, 5a4. Sliding block, 5a5. Steel cable;

[0044] 6a1. Second bearing housing; 6a2. Hollow round roller; 6a3. Keyway; 6a4. Active meshing disc; 6a5. Passive meshing disc; 6a6. Keyed sliding cylinder; 6a7. Second external hexagonal column; 6a8. Second telescopic spring; 6a9. Telescopic rod. Detailed Implementation

[0045] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0046] Example 1

[0047] This embodiment provides a bridge railing connection component, see [link]. Figure 2 and Figure 3 It includes a back plate 1, a rib plate 7, a seam-sealing sheet 2, a clamping device 3, a tensioning auxiliary device 4, a centering positioning device 5, and a release limiting device 6; the back of the seam-sealing sheet 2 is fixed with a rib plate 7, and the rib plate 7 is connected to the back plate 1 through the clamping device 3.

[0048] The sealing sheet 2 is located on the side of the bridge railing facing the bridge deck. The contact surface of the sealing sheet 2 is conformal to that of the bridge railing. The back plate 1 is located on the side of the bridge railing away from the bridge deck. The sealing sheet 2 cannot be directly connected to the clamping device 3, which may easily lead to weld breakage at the connection. The rib plate 7 reduces the possibility of weld breakage.

[0049] The sheet metal 2 and the back plate 1 together cover the gaps at the joints of the bridge railing. The sheet metal 2 covers the gaps of the bridge railing facing the bridge surface and the sky, while the back plate 1 covers the gaps of the bridge railing on the side away from the bridge surface.

[0050] The clamping device 3, tensioning auxiliary device 4, centering positioning device 5, and release limiting device 6 are all located within the space formed by the joint-sealing iron sheet 2, back plate 1, and bridge railings on both sides. This extends the service life of the clamping device 3, tensioning auxiliary device 4, centering positioning device 5, and release limiting device 6, and is beneficial for secondary use.

[0051] The clamping device 3 can fix the positional relationship of the bridge railing connecting component along the front to back direction of the bridge railing; the centering positioning device 5 can fix the positional relationship of the bridge railing connecting component along the extension direction of the bridge railing, and the centering positioning device 5 can also prevent the bridge railing connecting component from moving towards the sky.

[0052] See Figure 4 The clamping device 3 includes a first bearing seat 3a, a tensioning actuator 3b, and a rotating actuator 3c; multiple first bearing seats 3a are fixed on the back plate 1, and multiple tensioning actuators 3b are provided on one side of the first bearing seat 3a, and the multiple tensioning actuators 3b are driven by the rotating actuator 3c.

[0053] The first bearing seat 3a is used to fix the relative position of the tensioning actuator 3b and ensure that the tensioning actuator can rotate along the axis of the first bearing seat 3a; the tensioning actuator 3b can bring the back plate 1 closer to the bridge railing, so that the back plate 1 and the sealing sheet 2 are tightly attached to the bridge railing; the rotating member 3c is used to control the rotation of the tensioning actuator 3b and is used when the bridge railing connecting assembly is removed from the bridge railing joint.

[0054] The upper part of the back plate 1 has two through holes, and a circular rubber sheet is installed in each through hole. The circular rubber sheet has a cross-shaped slit. The two through holes are used to pass through a cross wrench, and the circular rubber sheet with the cross-shaped slit is used to block rainwater and sand from the outside.

[0055] The clamping device 3 can tighten the joint-covering sheet metal 2 and the back plate 1 to the bridge railing by tightening the actuator 3b, thereby covering the joints of the bridge railing and ensuring the overall aesthetics of the bridge railing.

[0056] Preferred, see Figure 5 and Figure 9 The tensioning actuator 3b includes a gear post 3b1, a one-way inclined tooth 3b2, a circular groove 3b3, a first rod 3b5, a first telescopic spring 3b6, and a first limiting tooth 3b7. The gear post 3b1 has a circular groove 3b3 inside. Multiple one-way inclined teeth 3b2 are fixed at the upper and lower ends of the circular groove 3b3. The inclined surfaces of the one-way inclined teeth 3b2 face the rib plate 7. A part of the first rod 3b5 is located in the circular groove 3b3. Square grooves are symmetrically arranged in the first rod 3b5. The first telescopic spring 3b6 is installed in each of the square grooves. The first telescopic spring 3b6 is connected to the first limiting tooth 3b7.

[0057] When the connecting components are installed at the joints of the bridge railing, the one-way inclined tooth 3b2 in the gear column 3b1 engages with the first limiting tooth 3b7 in the first rod 3b5. As the sealing sheet 2 and the back plate 1 gradually approach each other, the first limiting tooth 3b7 retracts and pops out from the first rod 3b5 under the action of the first telescopic spring 3b6. The first limiting tooth 3b7 engages with different one-way inclined teeth 3b2 in sequence, thereby clamping the sealing sheet 2 and the back plate 1 tightly to the bridge railing.

[0058] Preferably, stabilizing plates 3b4 are fixed on the upper and lower sides of the circular groove 3b3, and the inner diameter of the stabilizing plates 3b4 is the same as the diameter of the first rod 3b5.

[0059] The design that the inner diameter of the stabilizing plate 3b4 is the same as the diameter of the first rod 3b5 ensures that the first rod 3b5 will not deviate when sliding in the circular groove 3b3 of the gear column 3b1, thus improving the stability of the clamping device 3.

[0060] Preferred, see Figure 6The rotating component 3c includes a closed rack 3c1, a drive gear 3c2, a drive rod 3c3, and a first external hexagonal prism 3c4; the first external hexagonal prism 3c4 is fixed to one side of the drive gear 3c2, and the drive rod 3c3 is fixed to the other side of the drive gear 3c2. The drive rod 3c3 is connected to the rib plate 7 through a third bearing seat. The closed rack 3c1 meshes with the outer side of the drive gear 3c2, and the closed rack 3c1 meshes with the gear prism 3b1.

[0061] When it is necessary to disengage the connecting component at the bridge joint, the first rod 3b5 needs to be partially pulled out of the circular groove 3b3 of the gear post 3b1. This removes the restriction that the first rod 3b5 can only move in one direction within the circular groove 3b3 of the gear post 3b1. This disengagement requires the use of a cross wrench. The operation method is to insert the cross wrench into the connecting component through the first through hole of the back plate 1. The inner hexagonal groove of the cross wrench engages with the first outer hexagonal post 3c4. Rotating the cross wrench causes the first outer hexagonal post 3c4 to move. When c4 rotates, the first external hexagonal column 3c4 drives the drive gear 3c2 to rotate, the drive gear 3c2 drives the closed rack 3c1 to rotate, the closed rack 3c1 drives the gear column 3b1 to rotate, and the one-way inclined tooth 3b2 inside the gear column 3b1 follows the rotation of the gear column 3b1. When the rotation reaches the point where the first limiting tooth 3b7 is no longer meshing with the one-way inclined tooth 3b2, the first rod 3b5 can move freely in the circular groove 3b3 of the gear column 3b1, releasing the limiting position of the clamping device 3 on the connection components and the bridge joint.

[0062] Preferred, see Figure 7 The tensioning auxiliary device 4 includes a hook 4a1, a rope, and a rope channel 4b1; the hook 4a1 is fixed on the back plate 1, and the rope channel 4b1 is opened inside the back plate 1 and the gap-sealing sheet 2.

[0063] Preferably, the rope is capable of being pushed and pulled within the rope channel 4b1.

[0064] The bridge railing connecting component is snapped in from top to bottom at the bridge joint. After snapping in, adjust the sealing sheet 2 to fit the bridge railing. Once fitted, pull the rope forcefully to complete the installation of the bridge railing connecting component. After completion, push the rope into the bridge railing connecting component to release the rope from the hook 4a1. At this point, the rope can be completely pulled out.

[0065] Preferably, both ends of the rope channel 4b1 are provided with rounded corners to prevent the rope from being worn off by the edge of the channel 4b1.

[0066] Preferred, such as Figure 8As shown, the centering positioning device 5 includes a lifting clamp 5a1, a vertical plate 5a2, a spring plate 5a3, and a steel cable 5a5; multiple vertical plates 5a2 are fixed to the lower end of the rib plate 7, and spring plates 5a3 are fixed on both sides of the bottom of the vertical plate 5a2. The lifting clamp 5a1 is slidably connected to the rib plate 7, and steel cables 5a5 are installed on both sides of the lifting clamp 5a1.

[0067] When the bridge railing connecting assembly is snapped into place from top to bottom at the bridge joint, the lifting clamp 5a1 does not limit the spring plate 5a3. The spring plate 5a3 is in an upward-sloping state. The spring plates 5a3 on both sides of the upright plate 5a2 are squeezed by the bridge gap, and the spring plates 5a3 deform. Due to the deformation, the ends of the spring plates 5a3 tend to move towards the side wall they are in contact with. That is, when the bridge railing connecting assembly has an upward tendency, the ends of the spring plates 5a3 are stuck against the side wall of the bridge gap, preventing it from moving upward. This avoids external factors such as wind blowing the bridge railing connecting assembly up. At the same time, the symmetrical design of the spring plates 5a3 on both sides of the upright plate 5a2 makes the middle of the railing connecting assembly correspond to the middle of the bridge gap, preventing the railing connecting assembly from being biased to one side of the gap.

[0068] Preferably, the rib plate 7 is provided with a semi-circular sliding groove, and the lifting clamp plate 5a1 is fixed with a slider 5a4 that cooperates with the semi-circular sliding groove. The design of the semi-circular sliding groove and the slider 5a4 cooperating with each other allows the lifting clamp plate 5a1 to move upward under the guidance of the semi-circular sliding groove.

[0069] Preferably, the shape of the sheet metal 2 used to cover the gap 1 of the bridge railing matches the surface of the bridge railing, thus covering the gap 1 of the bridge railing while ensuring the overall aesthetics of the bridge railing.

[0070] Preferred, such as ​ As shown, the release limiting device 6 includes a second bearing seat 6a1, a hollow roller 6a2, a keyway 6a3, an active engagement disc 6a4, a passive engagement disc 6a5, a keyed sliding cylinder 6a6, a second external hexagonal column 6a7, a second telescopic spring 6a8, and a telescopic rod 6a9; the hollow roller 6a2 has a keyway 6a3 inside, and the keyed sliding cylinder 6a6 is slidably connected inside the hollow roller 6a2. The second external hexagonal column 6a7 is fixed on one side of the keyed sliding cylinder 6a6, and the second telescopic spring 6a8 is installed inside the keyed sliding cylinder 6a6.

[0071] Preferably, the surface of the hollow roller 6a2 is provided with a hook, and the steel cable 5a5 is installed on the hook.

[0072] Preferably, an active engagement disc 6a4 is fixed on one side of the hollow roller 6a2, and a passive engagement disc 6a5 is rotatably connected to one side of the keyed sliding cylinder 6a6.

[0073] Preferably, the passive engagement disc 6a5 is connected to the rib plate 7 via a telescopic rod 6a9, and the hollow roller 6a2 is connected to the rib plate 7 via a second bearing seat 6a1.

[0074] When it is necessary to disconnect the connecting components at the bridge joint, the spring plate 5a3 and the side wall of the bridge joint are no longer in contact by releasing the limiting device 6. The operation method of releasing the limiting device 6 is to insert the cross wrench into the interior of the connecting component through the second through hole of the back plate 1. The inner hexagonal groove of the cross wrench cooperates with the second outer hexagonal column 6a7. The cross wrench is forcefully inserted into the connecting component while rotating.

[0075] During the insertion of the cross wrench, the second external hexagonal column 6a7 drives the keyed sliding cylinder 6a6 to move towards the side of the sheet metal 2. The keyed sliding cylinder 6a6 drives the passive meshing toothed disc to move towards the side of the sheet metal 2, so that the passive meshing toothed disc no longer meshes with the active meshing toothed disc.

[0076] During the rotation of the cross wrench, the second outer hexagonal column 6a7 drives the keyed sliding cylinder 6a6 to rotate. The keyed sliding cylinder 6a6 drives the hollow roller 6a2 to rotate through the keyway 6a3. The hollow roller 6a2 drives the steel cable 5a5 of the centering positioning device 5 to rotate. The steel cable 5a5 drives the lifting clamp 5a1 to rise. After the cross wrench rotates 5 times, the crossbar at the bottom of the lifting clamp 5a1 retracts the spring plate 5a3, so that it no longer contacts the side wall of the bridge joint, thus releasing the centering and anti-upward movement function of the centering positioning device 5.

[0077] After releasing the centering and anti-upward movement functions of the centering positioning device 5, the cross wrench is removed. Under the action of the second telescopic spring 6a8, the passive engagement gear plate re-engages with the active engagement gear plate, thus preventing the spring plate 5a3 from resetting.

[0078] After releasing the centering and anti-upward movement functions of the centering positioning device 5 and the clamping function of the clamping device 3, the bridge railing connecting assembly can be removed from bottom to top. The removed bridge railing connecting assembly can be reused.

[0079] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A bridge railing connection component, characterized in that: It includes a back plate (1), ribs (7), a seam-sealing sheet (2), a clamping device (3), a tensioning auxiliary device (4), a centering positioning device (5), and a release limiting device (6); the back of the seam-sealing sheet (2) is fixed with ribs (7), and the ribs (7) are connected to the back plate (1) by the clamping device (3); the clamping device (3), tensioning auxiliary device (4), centering positioning device (5), and release limiting device (6) are all located in the space formed by the seam-sealing sheet (2), the back plate (1), and the bridge railings on both sides; the centering positioning device (5) includes a lifting clamp (5a1), a vertical plate (5a2), a spring plate (5a3), and a steel cable (5a5); multiple The upright plate (5a2) is fixed to the lower end of the rib plate (7). The bottom sides of the upright plate (5a2) are fixed with spring plates (5a3). The lifting clamp (5a1) is slidably connected to the rib plate (7). The lifting clamp (5a1) is equipped with steel cables (5a5) on both sides. When the bridge railing connecting assembly is snapped into the bridge joint from top to bottom, the lifting clamp (5a1) does not limit the spring plate (5a3). The spring plate (5a3) is in an oblique upward state. The spring plates (5a3) on both sides of the upright plate (5a2) are squeezed by the bridge gap. The spring plates (5a3) deform. The ends of the spring plates (5a3) tend to move towards the side wall they contact due to the deformation.

2. The bridge railing connection assembly as described in claim 1, characterized in that: The tensioning auxiliary device (4) includes a hook (4a1), a rope, and a rope channel (4b1); the hook (4a1) is fixed on the back plate (1), and the rope channel (4b1) is opened inside the back plate (1) and the slit sheet (2).

3. The bridge railing connection assembly as described in claim 1, characterized in that: The release limiting device (6) includes a second bearing seat (6a1), a hollow roller (6a2), a keyway (6a3), an active engagement disc (6a4), a passive engagement disc (6a5), a keyed sliding cylinder (6a6), a second external hexagonal column (6a7), a second telescopic spring (6a8), and a telescopic rod (6a9). The hollow roller (6a2) has a keyway (6a3) inside, and the keyed sliding cylinder (6a6) is slidably connected inside the hollow roller (6a2). The second external hexagonal column (6a7) is fixed on one side of the keyed sliding cylinder (6a6). The second telescopic spring (6a8) is installed inside the keyed sliding cylinder (6a6). The surface of the hollow roller (6a2) is provided with a hook, and the steel cable (5a5) is installed on the hook.

4. The bridge railing connection assembly as described in claim 3, characterized in that: The hollow roller (6a2) has an active engagement disc (6a4) fixed on one side, and the keyed sliding cylinder (6a6) has a passive engagement disc (6a5) rotatably connected to one side.

5. The bridge railing connection assembly as described in claim 4, characterized in that: The passive engagement disc (6a5) is connected to the rib (7) via a telescopic rod (6a9), and the hollow roller (6a2) is connected to the rib (7) via a second bearing seat (6a1).

6. The bridge railing connection assembly as described in claim 2, characterized in that: The rope is capable of being pushed and pulled within the rope channel (4b1).

7. The bridge railing connection assembly as described in claim 2, characterized in that: Both ends of the rope channel (4b1) are rounded.

8. The bridge railing connection assembly as described in claim 1, characterized in that: A semi-circular groove is provided on the rib plate (7), and a slider (5a4) that cooperates with the semi-circular groove is fixed inside the lifting clamp plate (5a1).

9. The bridge railing connection assembly as described in claim 1, characterized in that: The shape of the sealing sheet (2) matches the surface shape of the bridge railing.

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