A push-pull opening bridge crash barrier and a method of using the same

Abstract

The application belongs to the technical field of anti-collision guardrails, and particularly discloses a push-pull opening type bridge anti-collision guardrail and a use method thereof. The anti-collision guardrail comprises a stand column, a first cross beam, a second cross beam and a sliding module. The stand column is arranged on a bridge deck. The first cross beam and the second cross beam are oppositely arranged on the stand column and are both hollow pipes. The sliding module is respectively penetrated into the first cross beam and the second cross beam at two ends and is movably connected with the first cross beam and the second cross beam, and a roller assembly is arranged on the surface of the sliding module. The sliding module is slid out of the second cross beam and into the first cross beam by the roller assembly, so that the friction and the required force for opening are significantly reduced, the smoothness of operation is ensured, and at the same time, the sliding module is limited in the range of the cross beam, the collision risk caused by intrusion into a driving lane is avoided, and the safety of road users is maximally ensured.

Description

Technical Field

[0001] This invention belongs to the field of crash barrier technology, and more specifically, relates to a push-pull opening type bridge crash barrier and its usage method. Background Technology

[0002] In bridge engineering, crash barriers play a crucial role. They are commonly installed on both sides of the roadway to prevent vehicles from deviating from their intended trajectory and ensure traffic safety. Because vehicles can collide at any point, crash barriers are typically designed as continuous, uninterrupted structures for optimal protection. However, this continuity becomes an obstacle when bridge maintenance personnel need to cross the barriers to perform their work. To address this issue, barriers at certain locations are designed to be openable to facilitate the passage of personnel and equipment.

[0003] With increasing domestic attention to the ease of bridge maintenance, various types of opening mechanisms for crash barriers have emerged in the market, such as swing-out and flip-up types. In the prior art, Chinese Patent CN211775957U discloses an openable edge guardrail, belonging to the field of building construction technology. It includes multiple interconnected guardrail units, at least one of which is an openable guardrail. One side of the openable guardrail is fixed to an adjacent guardrail unit on that side via a bolt assembly, and the other side is hinged to the side of its adjacent guardrail unit. The bolt assembly includes a ring, a pin, and a latch. The ring is fixed to the openable guardrail and its adjacent guardrail unit, respectively. A locking handle is fixed to the pin, and a latch hole is provided on the locking handle. The latch is fixed to the guardrail unit. When the pin is inserted into the two rings to lock the two guardrail units, the latch hole on the locking handle engages with the latch to lock the pin. Chinese Patent CN218293066U discloses an openable crash barrier, specifically comprising a fixed barrier and a movable barrier. Both ends of the movable barrier are fixedly connected to the fixed barrier. The fixed barrier consists of an upper limit rod, a lower limit rod, and a fixed rail. The movable barrier consists of an upper limit rod, a lower limit rod, a fixed rail, and a movable rail. The end of the upper limit rod is fixedly connected to the upper limit rod, and the end of the lower limit rod is fixedly connected to the lower limit rod. This openable crash barrier, with its movable barrier, allows the distance between adjacent movable rails to be adjusted as needed, enabling the barrier to be in a closed or open state. This facilitates maintenance of the workpiece gaps protected by the barrier and makes the barrier easy to use.

[0004] Although the aforementioned patents, through ingenious designs such as rotating pins, allow some guardrail beams to rotate freely in the horizontal or vertical directions, greatly improving the efficiency and convenience of bridge maintenance, in practical applications, the friction at the rotating pin position is relatively high, which can easily cause locking and affect the opening of the guardrail. Secondly, swing-opening guardrails may encroach on the driving lane, posing a collision risk, while upward-opening guardrails need to overcome gravity, limiting the width of the guardrail that can be opened. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a push-pull opening type bridge crash barrier and its usage method. The roller assembly assists the sliding module in sliding out of the second crossbeam and into the first crossbeam, significantly reducing friction and the force required for opening, ensuring smooth operation. At the same time, by confining the sliding module within the crossbeam range, the risk of collision caused by intrusion into the driving lane is avoided, thus maximizing the safety of road users.

[0006] To achieve the above objectives, the present invention provides a push-pull opening type bridge crash barrier, comprising: a post, a first crossbeam, a second crossbeam, and a sliding module, wherein: The columns are installed on the bridge deck to provide stable support for other components; The first and second crossbeams are positioned opposite each other on the column, and both are hollow tubes; The sliding module has its two ends inserted into the first crossbeam and the second crossbeam respectively, and is movably connected to the first crossbeam and the second crossbeam respectively, and its surface is provided with a roller assembly. The roller assembly assists the sliding module in sliding out of the second crossbeam and into the first crossbeam, thereby reducing friction and the force required for opening. At the same time, by confining the sliding module within the crossbeam range, the risk of collision caused by intrusion into the driving lane is avoided.

[0007] Furthermore, the sliding module includes: an inner sleeve and a guide rail; the guide rail is located at the bottom end of the inner sleeve and close to the first crossbeam, and a matching guide groove is provided at a corresponding position on the inner wall of the first crossbeam; The second crossbeam is provided with a gasket, which contacts the end of the inner sleeve that extends into the second crossbeam; The crash barrier also includes several limiting pins, which are adapted to the corresponding through holes provided on the second crossbeam and the upper end of the inner sleeve.

[0008] Furthermore, the sliding module also includes a sliding auxiliary component, which is disposed on the outside of the inner sleeve.

[0009] Furthermore, the sliding auxiliary component is a strip-shaped grip.

[0010] Furthermore, the sliding auxiliary component includes: an auxiliary connector and a rotating handle; the auxiliary connector is connected to a plurality of the inner sleeves; the rotating handle is disposed at the upper end of the auxiliary connector and is movably connected to the auxiliary connector; the mating parts provided on the rotating handle are adapted to the first limiting part provided on the first crossbeam and the second limiting part provided on the second crossbeam; The auxiliary connector includes clamps and telescopic rods; several clamps are respectively connected to the inner sleeve; two adjacent clamps are respectively connected to both ends of the telescopic rod. The rotary handle is movably connected to the auxiliary connector via two lugs located at the upper end of the auxiliary connector and a connecting shaft passing through the rotary handle.

[0011] Furthermore, the mating component is a through hole, and the first limiting component and the second limiting component are protrusions adapted to the through hole.

[0012] Furthermore, the mating component is a protrusion provided on both sides of the rotating handle, and the first limiting component and the second limiting component are grooves adapted to the protrusion.

[0013] Furthermore, the roller assembly includes: a first roller bearing, a second roller bearing, and a third roller bearing; a plurality of the first roller bearings and a plurality of the second roller bearings are arranged around the outer side of the inner sleeve and in contact with the inner wall surface of the first crossbeam; the third roller bearing is located at the bottom end of the inner sleeve and in contact with the inner wall surface of the second crossbeam. The first roller bearing, the second roller bearing, and the third roller bearing have the same structure, each including a roller and a bearing. The bearing is adapted to two symmetrical mounting holes in the through hole of the outer wall of the inner sleeve. The roller is located on the outside of the inner sleeve through the bearing and contacts the inner wall surface of the first crossbeam or the second crossbeam. The distance between the sliding auxiliary component and the second roller bearing is greater than the distance between the first crossbeam and the second crossbeam.

[0014] Furthermore, the number of the first crossbeam and the second crossbeam are the same, and their inner diameters are the same; The quantity is three or four.

[0015] Another aspect of the present invention provides a push-pull opening type bridge crash barrier and its method of use, which is implemented using the crash barrier described above, and includes the following steps: S1: Assemble the roller assembly and sliding module, and then test the roller assembly to ensure that it rolls normally; S2: Install guide grooves on the inner wall of the first crossbeam and install gaskets in the second crossbeam; S3: Insert the sliding module into the first crossbeam via the guide rail and guide groove at the bottom of the sliding module; S4: Install several columns onto the upper part of the bridge deck, and then install the first crossbeam and the second crossbeam onto two adjacent columns; S5: Push or pull the sliding module to the second crossbeam using the sliding auxiliary component, and fix it with the limiting pin.

[0016] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects: 1. The crash barrier of the present invention achieves a movable connection between the first and second crossbeams, which are arranged opposite to each other, through the sliding module. When the crash barrier is in the closed state, it ensures a stable connection between the first and second crossbeams, thereby ensuring driving safety. When opening, the roller assembly assists the sliding module to slide out of the second crossbeam and into the first crossbeam, significantly reducing friction and the force required to open, ensuring smooth opening. At the same time, by confining the sliding module within the crossbeam range, it avoids the collision risk caused by intrusion into the driving lane, thus maximizing the safety of road users.

[0017] 2. The anti-collision guardrail of the present invention supports the sliding module by having the first roller bearing, the second roller bearing, and the third roller bearing respectively contact the first crossbeam and the second crossbeam, thereby reducing the frictional force between the sliding module and the first crossbeam and the second crossbeam, and thus significantly reducing the difficulty of opening; secondly, the guide rail and its adapted guide groove can constrain the movement direction of the sliding module during opening, preventing the sliding module from encroaching on pedestrian and vehicle passages, and significantly improving safety.

[0018] 3. The crash barrier of the present invention enhances the stability of the crash barrier by arranging the first crossbeam and the second crossbeam opposite to each other and keeping their number and inner diameter the same, thereby ensuring that the sliding module remains stable when performing opening and closing operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the crash barrier in the closed state according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the anti-collision guardrail in the open state according to an embodiment of the present invention; Figure 3 This is a partial explosion diagram of the crash barrier according to an embodiment of the present invention; Figure 4 This is a partial structural diagram of an embodiment of the present invention where the mating part is a through hole; Figure 5This is a partial structural diagram of an embodiment of the present invention where the mating component is a protrusion; Figure 6 This is a flowchart illustrating the steps of using the crash barrier according to an embodiment of the present invention.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-column, 2-first crossbeam, first limiting member 21, 3-second crossbeam, 31-second limiting member, 4-sliding module, 41-inner sleeve, 42-guide rail, 43-sliding auxiliary member, 431-auxiliary connecting member, 4311-clamp, 4312-telescopic rod, 432-rotating handle, 4321-fitting member, 5-roller assembly, 51-first roller bearing, 52-second roller bearing, 53-third roller bearing, 6-shield, 7-limiting pin. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1 like Figures 1 to 5 As shown, Embodiment 1 of the present invention provides a push-pull opening type bridge crash barrier, including: a column 1, a first crossbeam 2, a second crossbeam 3, and a sliding module 4; the column 1 is disposed on the bridge deck; the first crossbeam 2 and the second crossbeam 3 are disposed opposite to the column 1, and both are hollow tubes; the two ends of the sliding module 4 are respectively inserted into the first crossbeam 2 and the second crossbeam 3, and are respectively movably connected to the first crossbeam 2 and the second crossbeam 3, and its surface is provided with a roller assembly 5; in use, the crash barrier of the present invention realizes the movable connection of the oppositely disposed first crossbeam 2 and the second crossbeam 3 through the sliding module 4, so that when the crash barrier is in the closed state, the first crossbeam 2 and the second crossbeam 3 are securely connected, thereby ensuring driving safety; when opened, the roller assembly 5 assists the sliding module 4 to slide out of the second crossbeam 3 and into the first crossbeam 2, significantly reducing friction and the force required to open, ensuring smooth operation; at the same time, by restricting the sliding module 4 within the crossbeam range, the risk of collision caused by intrusion into the driving lane is avoided, thus maximizing the safety of road users.

[0023] Specifically, such as Figures 1 to 3As shown, the column 1 is installed on the bridge deck to stably support other components. It can be understood that several columns 1 are evenly distributed along the bridge direction at the upper end of the bridge deck, but in a specific location, namely the area near the sliding module 4, the density of the columns 1 can be increased to help improve the safety of that specific location.

[0024] Preferably, the distance between the two pillars 1 is in the range of 1.3~2.0m, in order to ensure road traffic safety.

[0025] Preferably, the column 1 is fixed to the upper end of the bridge by welding or bolting.

[0026] Preferably, the column 1 is mainly made of rust-resistant metal parts to improve service life and reduce maintenance costs.

[0027] Specifically, such as Figures 1 to 5 As shown, the first crossbeam 2 and the second crossbeam 3 are disposed opposite to each other on the column 1, and both are hollow tubes, used to support the sliding module 4 and improve the safety of the anti-collision guardrail.

[0028] Preferably, a plurality of the first crossbeams 2 are arranged in parallel on the same side or both sides of the column 1, and the spacing between the plurality of first crossbeams 2 on the same side is the same. In particular, the number of first crossbeams 2 on the same side is three or four, in order to enhance the stability and protective performance of the crash barrier, and reduce the manufacturing cost while meeting safety requirements.

[0029] Preferably, a plurality of second crossbeams 3 are arranged in parallel on the same side or both sides of the column 1, and the spacing between the plurality of second crossbeams 3 on the same side is the same. In particular, the number of second crossbeams 3 on the same side is three or four, in order to enhance the stability and protective performance of the crash barrier, and reduce the manufacturing cost while meeting safety requirements.

[0030] Preferably, the number of the first crossbeam 2 and the second crossbeam 3 are the same, and their inner diameters are the same, to ensure that the sliding module 4 remains stable when performing opening and closing operations.

[0031] Specifically, such as Figures 1 to 3As shown, the sliding module 4 has its two ends inserted into the first crossbeam 2 and the second crossbeam 3 respectively, and is movably connected to the first crossbeam 2 and the second crossbeam 3 respectively. Its surface is provided with roller assemblies 5 to ensure a stable connection between the first crossbeam 2 and the second crossbeam 3 when closed, and to reduce the difficulty of moving the sliding module 4 when open. The sliding module 4 includes: an inner sleeve 41, a guide rail 42, and a sliding auxiliary component 43; the guide rail 42 is located at the bottom end of the inner sleeve 41 and close to the first crossbeam 2, and a matching guide groove is provided at a corresponding position on the inner wall of the first crossbeam 2; the sliding auxiliary component 43 is located on the outside of the inner sleeve 41. The roller assembly 5 includes: a first roller bearing 51, a second roller bearing 52, and a third roller bearing 53; a plurality of the first roller bearings 51 and a plurality of the second roller bearings 52 are arranged around the outside of the inner sleeve 41 and in contact with the inner wall surface of the first crossbeam 2; the third roller bearing 53 is located at the bottom end of the inner sleeve 41 and in contact with the inner wall surface of the second crossbeam 3. During use, the first roller bearings 51, the second roller bearings 52, and the third roller bearing 53 respectively contact the first crossbeam 2 and the second crossbeam 3 to support the sliding module 4, thereby reducing the frictional force between the sliding module 4 and the first crossbeam 2 and the second crossbeam 3, and significantly reducing the difficulty of opening; secondly, the guide rail 42 and its adapted guide groove can constrain the movement direction of the sliding module during opening, preventing the sliding module 4 from encroaching on pedestrian and vehicle passages, significantly improving safety.

[0032] Preferably, the inner sleeve 41 is a hollow metal tube, and it is mainly made of rust-proof metal parts to improve service life and reduce maintenance costs.

[0033] Preferably, the sliding auxiliary member 43 is a strip-shaped handle to facilitate operation and movement of the inner sleeve 41. It should be noted that in other embodiments, the sliding auxiliary member 43 may also be a handle or grip of other shapes, which is not specifically limited here, but these solutions are all within the protection scope of this invention.

[0034] Preferably, the distance between the sliding auxiliary component 43 and the second roller bearing 52 is greater than the distance between the first crossbeam 2 and the second crossbeam 3, so as to prevent the inner sleeve 41 from falling off and ensure the structural integrity of the crash barrier.

[0035] Preferably, the first roller bearing 51, the second roller bearing 52, and the third roller bearing 53 have the same structure, each including a roller and a bearing. The bearing is adapted to two symmetrical mounting holes in the through hole on the outer wall of the inner sleeve 41. The roller is located on the outside of the inner sleeve 41 through the bearing and contacts the inner wall surface of the first crossbeam 2 or the second crossbeam 3. It can be understood that during the opening and closing operation of the crash barrier, the first roller bearing 51, the second roller bearing 52, and the third roller bearing 53 can respectively maintain contact with the inner wall surface of the first crossbeam 2 or the second crossbeam 3, providing necessary support and reducing friction, thereby making the opening and closing operation smooth.

[0036] Preferably, a gasket 6 is provided inside the second crossbeam 3. The gasket 6 contacts the end of the inner sleeve 41 that extends into the second crossbeam 3, so as to absorb the kinetic energy during the closing operation and prevent the sliding auxiliary member 43 from colliding with the second crossbeam 3.

[0037] Preferably, the crash barrier further includes several limiting pins 7, which are adapted to the corresponding through holes provided on the upper end of the second crossbeam 3 and the inner sleeve 41, and are used to limit the inner sleeve 41 when the crash barrier is closed, so as to ensure the integrity of the crash barrier.

[0038] Example 2 like Figure 4 and Figure 5 As shown, based on Embodiment 1, in Embodiment 2 of the present invention, the sliding auxiliary component 43 includes: an auxiliary connector 431 and a rotating handle 432; the auxiliary connector 431 is connected to a plurality of inner sleeves 41; the rotating handle 432 is disposed on the upper end of the auxiliary connector 431 and is movably connected to the auxiliary connector 431; the mating part 4321 provided on the rotating handle 432 is adapted to the first limiting part 21 provided on the first crossbeam 2 and the second limiting part 31 provided on the second crossbeam 3. During use, the auxiliary connector 431 can effectively assist multiple inner sleeves 41 to complete opening and closing operations simultaneously, significantly improving work efficiency; secondly, by rotating the rotating handle 432 180 degrees vertically at the upper end of the auxiliary connector 431 and cooperating with the first limiting part 21 and the second limiting part 31 respectively, the sliding module 4 is limited in the open and closed states respectively, further ensuring the stability of the anti-collision guardrail structure.

[0039] Preferably, the auxiliary connector 431 includes clamps 4311 and telescopic rods 4312; several clamps 4311 are respectively connected to the inner sleeves 41; the telescopic rods 4312 are respectively connected to two adjacent clamps 4311 at both ends; it can be understood that the telescopic rods 4312 can achieve a stable connection between different clamps 4311 and the corresponding inner sleeves 41, so that multiple inner sleeves 41 can move simultaneously under the action of a rotating handle 432, thereby significantly improving operating efficiency and adapting to the connection requirements of inner sleeves with different spacing and different sizes. It should be noted that in other embodiments, other types of clamping devices can also be used, which are not specifically limited here, but these solutions are all within the protection scope of this invention.

[0040] Preferably, the rotating handle 432 is movably connected to the auxiliary connector 431 via two lugs disposed at the upper end of the auxiliary connector 431 and a connecting shaft passing through the rotating handle 432, so that the rotating handle 432 can rotate 180 degrees vertically at the upper end of the auxiliary connector 431. It should be noted that in other embodiments, other types of movable connection methods may be used, which are not specifically limited here, but these solutions are all within the protection scope of this invention.

[0041] In an optional embodiment, the mating part 4321 is a through hole, and the first limiting part 21 and the second limiting part 31 are protrusions adapted to the through hole. It can be understood that by mating the mating part 4321 with the protrusions, a stable connection can be achieved between the sliding module 4 and the first crossbeam 2 and the second crossbeam 3, respectively.

[0042] In an optional embodiment, the mating component 4321 is a protrusion located on both sides of the rotating handle 432, and the first limiting component 21 and the second limiting component 31 are grooves adapted to the protrusions. It can be understood that by mating the mating component 4321 with the groove, a stable connection can be achieved between the sliding module 4 and the first crossbeam 2 and the second crossbeam 3, respectively.

[0043] Other technical features are the same as in Embodiment 1 and can achieve the same technical effects, so they will not be described in detail here.

[0044] Example 3 like Figure 6 As shown, based on Embodiment 1, Embodiment 3 of the present invention provides a method for using a push-pull opening type bridge crash barrier, including the following steps: S1: Assemble the roller assembly 5 and the sliding module 4, and then test the roller assembly 5 to ensure that it rolls normally; S2: Install guide grooves on the inner wall of the first crossbeam 2 and install shims 6 in the second crossbeam 3; S3: Insert the sliding module 4 into the first crossbeam 2 through the guide rail 42 at the bottom of the sliding module 4 and the guide groove; S4: Install several columns 1 onto the upper part of the bridge deck, and then install the first crossbeam 2 and the second crossbeam 3 onto two adjacent columns 1. S5: The sliding module 4 is pushed or pulled to the second crossbeam 3 by the sliding auxiliary component 43 and fixed by the limiting pin 7.

[0045] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0047] In this patent, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit it; those skilled in the art will readily understand that the above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A push-pull opening type bridge crash barrier, characterized in that, include: The structure comprises: column (1), first crossbeam (2), second crossbeam (3), and sliding module (4), wherein: The column (1) is installed on the bridge deck to provide stable support for other components; The first crossbeam (2) and the second crossbeam (3) are respectively installed on the column (1), and both are hollow tubes; The sliding module (4) has its two ends inserted into the first crossbeam (2) and the second crossbeam (3) respectively, and is movably connected to the first crossbeam (2) and the second crossbeam (3) respectively, and its surface is provided with a roller assembly (5). The roller assembly (5) assists the sliding module (4) to slide out of the second crossbeam (3) and into the first crossbeam (2), thereby reducing friction and the force required to open. At the same time, by confining the sliding module (4) within the crossbeam range, the risk of collision caused by intrusion into the driving lane is avoided. The sliding module (4) includes: an inner sleeve (41) and a guide rail (42); the guide rail (42) is located at the bottom end of the inner sleeve (41) and close to the first crossbeam (2), and the inner wall of the first crossbeam (2) is provided with a matching guide groove at a corresponding position; The second crossbeam (3) is provided with a gasket (6), which contacts the end of the inner sleeve (41) that extends into the second crossbeam (3); The anti-collision guardrail also includes several limiting pins (7), which are adapted to the corresponding through holes provided on the upper end of the second crossbeam (3) and the inner sleeve (41); The sliding module (4) further includes a sliding auxiliary component (43), which is disposed on the outside of the inner sleeve (41); The sliding auxiliary component (43) includes: an auxiliary connector (431) and a rotating handle (432); the auxiliary connector (431) is connected to a plurality of inner sleeves (41); the rotating handle (432) is located at the upper end of the auxiliary connector (431) and is movably connected to the auxiliary connector (431); the mating part (4321) provided on the rotating handle (432) is adapted to the first limiting part (21) provided on the first crossbeam (2) and the second limiting part (31) provided on the second crossbeam (3); The auxiliary connector (431) includes clamps (4311) and telescopic rods (4312); several clamps (4311) are respectively connected to the inner sleeve (41); the telescopic rods (4312) are respectively connected to two adjacent clamps (4311) at both ends. The rotating handle (432) is movably connected to the auxiliary connector (431) via two ear plates located at the upper end of the auxiliary connector (431) and a connecting shaft passing through the rotating handle (432).

2. The push-pull opening type bridge crash barrier according to claim 1, characterized in that, The mating part (4321) is a through hole, and the first limiting part (21) and the second limiting part (31) are protrusions adapted to the through hole.

3. The push-pull opening type bridge crash barrier according to claim 1, characterized in that, The mating part (4321) is a protrusion provided on both sides of the rotating handle (432), and the first limiting part (21) and the second limiting part (31) are grooves adapted to the protrusion.

4. The push-pull opening type bridge crash barrier according to claim 1, characterized in that, The roller assembly (5) includes: a first roller bearing (51), a second roller bearing (52), and a third roller bearing (53); a plurality of the first roller bearings (51) and a plurality of the second roller bearings (52) are arranged around the outside of the inner sleeve (41) and in contact with the inner wall surface of the first crossbeam (2); the third roller bearing (53) is located at the bottom end of the inner sleeve (41) and in contact with the inner wall surface of the second crossbeam (3); The first roller bearing (51), the second roller bearing (52) and the third roller bearing (53) have the same structure. Each of them includes a roller and a bearing. The bearing is adapted to two symmetrical mounting holes in the through hole of the outer wall of the inner sleeve (41). The roller is located on the outside of the inner sleeve (41) through the bearing and contacts the inner wall surface of the first crossbeam (2) or the second crossbeam (3). The distance between the sliding auxiliary component (43) and the second roller bearing (52) is greater than the distance between the first crossbeam (2) and the second crossbeam (3).

5. The push-pull opening bridge crash barrier according to any one of claims 1-4, characterized in that, The number of the first crossbeam (2) and the second crossbeam (3) are the same, and their inner diameters are the same; The quantity is three or four.

6. A method of using a push-pull opening type bridge crash barrier, applied to the push-pull opening type bridge crash barrier as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: Assemble the roller assembly (5) and the sliding module (4), and then test the roller assembly (5) to ensure that it rolls normally; S2: Install guide grooves on the inner wall of the first crossbeam (2) and install gaskets (6) in the second crossbeam (3); S3: Insert the sliding module (4) into the first crossbeam (2) through the guide rail (42) at the bottom of the sliding module (4) and the guide groove. S4: Install several columns (1) onto the upper part of the bridge deck, and then install the first crossbeam (2) and the second crossbeam (3) onto two adjacent columns (1); S5: Push and pull the sliding module (4) to the second crossbeam (3) by the sliding auxiliary component (43) and fix it by the limiting pin (7).

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