Buffer pipe with limiting sleeve and anti-collision device

Abstract

The utility model discloses a buffer tube with a limit sleeve and an anti-collision device, and belongs to the technical field of bridge anti-collision, the buffer tube comprises a shell, a framework, a plurality of reinforcing plates and a plurality of energy dissipation units, the shell is wrapped outside the framework, the energy dissipation units are installed inside the framework, and the reinforcing plates are connected with two adjacent energy dissipation units on the outer side. The multiple energy dissipation units are arranged in the shell, the adjacent energy dissipation units are kept in the tangent state, the multiple energy dissipation units form the whole energy dissipation body through the reinforcing plates and the limiting sleeves, the continuous bearing capacity and the continuous force transmission path are ensured, continuous supporting force is provided for the shell, and the energy dissipation effect is improved. And the impact resistance and the stability of the whole structure are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge anti -collision technical field, and especially relates to buffer tube and anti -collision device with limit sleeve. BACKGROUND

[0002] The anti -collision device can buffer the huge impact force generated when the traffic tools such as ship or vehicle collide with the bridge, reduces the impact force directly acting on the pier by absorbing and dispersing the collision energy, thereby preventing the damage of the pier structure, guaranteeing the integrity of the main structure of the bridge and prolonging the service life of the bridge.

[0003] At present, the anti -collision device is usually prepared by energy dissipation material, and the anti -collision device absorbs the energy generated during the collision by using the elastic deformation of itself, and converts the kinetic energy into elastic potential energy of the material. However, the energy dissipation material in the anti -collision device is easy to displace after being impacted, and then the pre-designed energy absorption path is changed. The outermost energy dissipation material cannot uniformly disperse the impact force to the inner layer due to displacement, and the energy dissipation material in the inner layer cannot also convert the energy into elastic potential energy due to uneven stress, so that the whole energy absorption path is completely disturbed, and the protection efficiency of the anti -collision device is greatly weakened. SUMMARY

[0004] The utility model aims at overcoming the problem that the protection efficiency of the anti -collision device in the prior art is weakened due to the displacement of the energy dissipation material, and provides a buffer tube and an anti -collision device with a limit sleeve.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a buffer tube with a limit sleeve is provided, which comprises,

[0006] A shell;

[0007] A framework wrapped inside the shell;

[0008] A plurality of energy dissipation units are installed inside the framework, and the energy dissipation unit comprises a limit sleeve and a filling material, and the filling material is nested inside the limit sleeve;

[0009] A plurality of reinforcing plates are connected to the two adjacent energy dissipation units on the outside.

[0010] In an embodiment, any two adjacent energy dissipation units are tangent to each other.

[0011] In an embodiment, the energy dissipation unit and the shell are gap-fitted.

[0012] In an embodiment, the inner wall of the limit sleeve extends radially with a convex part, the outer wall of the filling material is provided with a groove, and the convex part is embedded with the groove.

[0013] In an embodiment, the limiting sleeve is connected to the reinforcing plate.

[0014] In an embodiment, the framework comprises a plurality of ring-shaped angle steels and a plurality of longitudinal angle steels, the ring-shaped angle steels being fixedly connected to the longitudinal angle steels so that the longitudinal angle steels are arranged in a ring shape and parallel to each other.

[0015] In an embodiment, the anti-collision device comprises the buffer tube with a limiting sleeve as described above, and a plurality of the buffer tubes with a limiting sleeve are connected to each other.

[0016] In an embodiment, the anti-collision device is installed on the pier by the fixing device.

[0017] In summary, the buffer tube with a limiting sleeve and the anti-collision device provided by the present application are characterized in that a plurality of the energy dissipation units are arranged in the shell, the adjacent energy dissipation units are kept in a tangent state, and the reinforcing plate and the limiting sleeve are used to form an energy dissipation whole from the energy dissipation units, thereby ensuring continuous bearing capacity and force transmission path, providing continuous support force for the shell, and improving the impact resistance and stability of the overall structure.

[0018] In order to make the above features and advantages of the present application more obvious and easy to understand, the following embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic view of the buffer tube with a limiting sleeve in the present application.

[0020] Figure 2 FIG. 2 is a sectional view of the buffer tube with a limiting sleeve in the present application. Figure 1

[0021] Figure 3 FIG. 3 is a side view of the buffer tube with a limiting sleeve in the present application. Figure 1

[0022] Figure 4 FIG. 4 is a schematic view of the energy dissipation unit in the present application.

[0023] Figure 5 FIG. 5 is a schematic view of the anti-collision device in the present application.

[0024] Figure 6 FIG. 6 is a schematic view of the crushing process of the anti-collision device in the present application when impacted.

[0025] 1-anti-collision device;

[0026] 11-buffer tube; 12-fixing device;

[0027] 111-shell; 112-framework; 113-reinforcing plate; 114-energy dissipation unit;​​

[0028] 1121 - Ring angle steel; 1122 - Several longitudinal angle steels; 1141 - Limiting sleeve; 1142 - Filling material;

[0029] 11411 - Protrusion; 11421 - Groove;

[0030] 2-Bridge pier. Detailed Implementation

[0031] To make the objectives and technical solutions of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] A high-performance anti-collision device, upon impact, can utilize its unique structure and material properties to operate systematically along a pre-designed mechanical path, smoothly absorbing and converting the collision energy. Based on this, this application provides a buffer tube with a limiting sleeve and fabricates an anti-collision device. Through the stable tangential support and adaptive deformation of the energy dissipation unit within the buffer tube, the stability and energy absorption efficiency of the protective device are effectively improved.

[0033] Figure 1 This is a schematic diagram of the buffer tube with a limiting sleeve in this utility model. Figure 1 As shown, the buffer tube 11 includes a shell 111, a frame 112, and several reinforcing plates 113 (see...). Figure 2 The frame 112 consists of a housing 111 and several energy dissipation units 114. The housing 111 is wrapped around the outside of the frame 112, and the energy dissipation units 114 are installed inside the frame 112. The reinforcing plate 113 connects two adjacent energy dissipation units 114 on the outside.

[0034] Figure 2 for Figure 1 A sectional view, such as Figure 2 As shown, the outer shell 111 is made of steel, and its certain rigidity provides basic structural support for the relatively soft internal components, ensuring the structural integrity of the buffer tube 11. Since the impact force first contacts the outer shell 111, meaning the outer shell 111 bears the greatest force, a steel material with high rigidity is chosen. The deformation of the rigid outer shell 111 prolongs the impact time. According to the impulse theorem, this prolonged impact time reduces the force transmitted to the internal components, thereby mitigating the impact force and achieving energy dissipation.

[0035] The skeleton 112 is fixedly connected inside the shell 111, and comprises a plurality of annular angle steels 1121 and a plurality of longitudinal angle steels 1122. The longitudinal angle steels 1122 are fixedly connected to the annular angle steels 1121, so that the longitudinal angle steels 1122 are arranged in parallel in a ring shape. The skeleton 112 and the shell 111, and the annular angle steels 1121 and the longitudinal angle steels 1122 can be fixed by welding. The longitudinal angle steels 1122 are uniformly arranged, and constitute the basic shape of the tubular skeleton 112. The annular angle steels 1121 are uniformly spaced and arranged around the longitudinal angle steels 1122, forming a support network with good bending resistance and certain structural strength. When the shell 111 is stressed, the skeleton 112 can assist the shell 111 to produce energy dissipation deformation. At the same time, the skeleton 112 can draw the deformation of the shell 111, rapidly disperse the impact force concentrated in the local part of the shell 111 to the entire skeleton 112, avoid the shell 111 from tearing or excessive bending due to excessive local stress, and also make the energy gradually dissipated in the transmission process.

[0036] A plurality of energy dissipation units 114 are uniformly installed inside the skeleton 112, and the energy dissipation units 114 are fixedly connected to the skeleton 112. The energy dissipation units 114 are in the shape of a circular tube, and any two adjacent energy dissipation units 114 are tangentially and fixedly connected. The energy dissipation units 114 are in clearance fit with the shell 111, so that the deformation process of the energy dissipation units 114 is not synchronized with the shell 111, avoiding the energy dissipation units 114 from entering the dense stage too early, thereby preventing the buffer tube 11 from entering the deflation stage too early, and ensuring a larger effective deformation amount. The number of the energy dissipation units 114 is preferably 7, one of which is located at the center, and the other six are uniformly arranged around the outside. Any two adjacent energy dissipation units 114 are in a tangential state to ensure that the energy dissipation units 114 cooperatively dissipate energy and improve the absorption efficiency of impact energy. Two adjacent energy dissipation units 114 can be fixed by welding. Figure 1 and Figure 2 As shown in FIGS. 1 and 2, in order to strengthen the fixation, the two adjacent energy dissipation units 114 on the outside are provided with the reinforcing plates 113. According to actual needs, at least one reinforcing plate 113 can be arranged along the axial direction of the energy dissipation unit 114 to ensure that the energy dissipation unit 114 maintains an overall shape.

[0037] As shown in FIGS. 1 and 2, in order to strengthen the fixation, the two adjacent energy dissipation units 114 on the outside are provided with the reinforcing plates 113. According to actual needs, at least one reinforcing plate 113 can be arranged along the axial direction of the energy dissipation unit 114 to ensure that the energy dissipation unit 114 maintains an overall shape. Figure 3As shown, the energy dissipation unit 114 comprises a limiting sleeve 1141 and a filling material 1142, the filling material 1142 is nested inside the limiting sleeve 1141. The limiting sleeve 1141 is a thin shell structure, which can be made of aluminum alloy material, used to limit the filling material 1142, prevent the filling material 1142 from displacement due to impact. In combination with Figure 3 and Figure 4 It can be seen that the limiting sleeve 1141 is hollow cylindrical, at least one convex portion 11411 extends radially on the inner wall of the limiting sleeve 1141. The filling material 1142 is cylindrical, at least one groove 11421 with a shape matching the convex portion 1411 is provided on the outer wall of the filling material 1142, the convex portion 11411 can be further limited after being clamped into the groove 11421 The filling material 1142 can make the connection between the limiting sleeve 1141 and the filling material 1142 more closely, prevent the filling material 1142 from sliding or accumulating in the limiting sleeve 1141. The filling material 1142 is selected from polyurethane or other elastic energy dissipation materials, which can absorb energy by reversible deformation, and has good buffering and damping performance. The limiting sleeve 1141 is fixedly connected with the reinforcing plate 113, and the limiting sleeve 1141 limits the filling material 1142, so that a plurality of energy dissipation units 114 form an energy dissipation whole, to form a continuous and uniform force transmission path.

[0038] As Figure 5 shown, a plurality of the buffer pipe 11 can be sequentially spliced to form a crashproof device 1, the crashproof device 1 is installed around the outside of the pier 2 through the fixing device 12, used to absorb and disperse the energy generated by the collision, reduce the damage degree of the pier 2 when colliding.

[0039] As Figure 6 shown, the crashproof device 1 is intact when it is not impacted. When the side of the crashproof device 1 away from the pier 2 is impacted, the shell 111 is first deformed under force, the framework 112 is also deformed, and then drives the internal energy dissipation units 114 to extrude each other. Because a plurality of the energy dissipation units 114 inside the shell 111 continuously support each other, the impact force is dispersed, the deformation degree of the shell 111 is reduced, and the sudden increase or decrease of the impact force suffered by the crashproof device 1 due to the premature fracture of the framework 112 is also avoided (see Figure 6 b). From Figure 6It can be known that the energy dissipation unit 114 bears the extrusion force from the shell 111 and the reaction force applied by the pier 2, and the energy dissipation units 114 extrude each other. The outermost energy dissipation unit 114 is first extruded, thereby transmitting the deformation pressure to the inner energy dissipation unit 114, the middle energy dissipation unit 114 deforms along the long axis direction of deformation, and the outer energy dissipation unit 114 first subjected to the impact force and the reaction force of the pier gradually deforms along the short axis direction. At this time, the energy dissipation unit 114 does not appear excessive displacement under the action of the limiting sleeve 1141 and the reinforcing plate 113. The energy dissipation unit 114 is still in the elastic deformation stage and does not appear obvious damage. With further transmission of the impact force, the shell 111 continues to deform, the internal space is reduced, and the energy dissipation unit 114 begins to have obvious crushing deformation until reaching the bearing limit (see Figure 6 d to Figure 6 f).

[0040] Therefore, the extrusion shear effect and the impact resistance and energy absorption capacity of the energy dissipation unit 114 ensure the continuous bearing capacity of the anti-collision device 11, effectively avoid the sudden change of the overall rigidity of the shell 111 in the damage stage, and significantly enhance the bearing capacity of the anti-collision device 1 in the crushing stage. Meanwhile, the energy dissipation units 114 are fixed to form an energy dissipation whole through the reinforcing plate 113 and the limiting sleeve 1141, which ensures that the energy dissipation units 114 can effectively perform cooperative energy dissipation, realize self-adaptive deformation of the energy dissipation units 114, make the force transmission more uniform, and improve the stability and energy absorption efficiency of the anti-collision device 1.

[0041] In summary, the utility model provides a buffer tube and an anti-collision device with a limiting sleeve, a plurality of energy dissipation units 114 are arranged in the shell 111, the adjacent energy dissipation units 114 are kept in tangential state, and the energy dissipation units 114 are formed into an energy dissipation whole through the reinforcing plate 113 and the limiting sleeve 1141, which ensures the continuous bearing capacity and the force transmission path, provides the shell 111 with continuous supporting force, and improves the impact resistance and stability of the overall structure.

[0042] Although the utility model has been disclosed as above through the embodiment, it is not used to limit the utility model, anyone with ordinary knowledge in the technical field can make some changes and decorations without departing from the spirit and scope of the utility model, so the protection scope of the utility model is defined by the appended patent application scope.

Claims

1. A buffer tube with a limiting sleeve, characterized in that, include, shell; A skeleton, which is enclosed inside the outer shell; Several energy dissipation units are installed inside the frame. Each energy dissipation unit includes a limiting sleeve and a filling material, with the filling material nested inside the limiting sleeve. Several reinforcing plates, the reinforcing plates connecting two adjacent energy dissipation units on the outer side.

2. The buffer tube with a limiting sleeve as described in claim 1, characterized in that, Any two adjacent energy dissipation units remain tangent to each other.

3. The buffer tube with a limiting sleeve as described in claim 2, characterized in that, The energy dissipation unit and the outer shell are fitted with a clearance.

4. The buffer tube with a limiting sleeve as described in claim 1, characterized in that, The inner wall of the limiting sleeve has a radially extending protrusion, and the outer wall of the filling material has a groove, with the protrusion fitting into the groove.

5. The buffer tube with a limiting sleeve as described in claim 4, characterized in that, The limiting sleeve is connected to the reinforcing plate.

6. The buffer tube with a limiting sleeve as described in claim 1, characterized in that, The frame includes several annular angle steels and several longitudinal angle steels. The annular angle steels are fixedly connected to the longitudinal angle steels, so that the longitudinal angle steels are arranged in a ring and parallel.

7. A collision avoidance device, characterized in that, The anti-collision device includes a buffer tube with a limiting sleeve as described in any one of claims 1-6, and a plurality of the buffer tubes with limiting sleeves are interconnected.

8. The anti-collision device as described in claim 7, characterized in that, The anti-collision device is installed on the bridge pier by a fixing device.

Images