Rotating crash canister

Abstract

The present application relates to the technical field of road safety facilities, and particularly relates to a rotating anti-collision barrel, which comprises an outer component, an inner buffer barrel rotatably sleeved on the outer component, an outer buffer barrel rotatably sleeved on the outer component, and a connecting structure, and the inner buffer barrel and the outer buffer barrel are relatively rotatable through the connecting structure; wherein the outer buffer barrel can drive the inner buffer barrel to rotate through the connecting structure in the rotating process. Through the inner buffer barrel and the outer buffer barrel, the connecting structure can connect the inner buffer barrel and the outer buffer barrel, the outer buffer barrel is rotated after being impacted, and the rotation of the outer buffer barrel can convert part of the impact energy; the rotation of the outer buffer barrel is beneficial to change the driving direction of the vehicle. When the outer buffer barrel is damaged, the inner buffer barrel can still continue to rotate under the action of the connecting structure, can efficiently convert the impact energy into the energy of rotation, can bear the impact load and keep the integrity, and can continuously and efficiently absorb energy and buffer.

Description

Technical Field

[0001] This invention relates to the field of road safety facilities technology, and in particular to a rotating anti-collision barrel. Background Technology

[0002] With rapid societal development, traffic congestion has intensified, leading to a series of unavoidable traffic accidents and similar incidents. Therefore, to reduce losses caused by traffic accidents, crash barriers are typically installed on highways and urban roads. Crash barriers are devices designed to protect vehicles and drivers from injury in the event of an accident at the edge of the road.

[0003] The existing crash barriers widely used in engineering mainly come in two forms, but they still have some shortcomings:

[0004] The first type is a hollow crash barrier made of a specific plastic material. When this type of crash barrier is impacted, it is very easy to deform greatly or even break, thus losing its function as a crash barrier.

[0005] The second type of crash barrier builds upon the first by adding energy-absorbing cushioning material inside. The presence of this cushioning material increases maintenance and replacement costs because it requires regular inspection and maintenance to maintain its energy-absorbing capacity. Furthermore, as the crash barrier is subjected to increased impact frequency and over time, the filling cushioning material may gradually lose its energy-absorbing properties.

[0006] Therefore, the need to develop a crash barrier that can withstand impact loads and maintain its integrity, while also providing continuous and efficient energy absorption and cushioning, is a crucial issue that the industry urgently needs to address. Summary of the Invention

[0007] This invention provides a rotating anti-collision barrel to solve the problems in the prior art where anti-collision barrels are poor at withstanding impact loads and maintaining integrity, and cannot continuously and efficiently absorb energy and buffer.

[0008] This invention provides a rotating anti-collision barrel, comprising:

[0009] External components;

[0010] An inner buffer tank is rotatably fitted onto the outer component;

[0011] An outer buffer bucket is rotatably fitted onto the outer component, and an inner buffer bucket is located between the outer buffer bucket and the outer component;

[0012] A connecting structure is provided between the inner buffer tank and the outer buffer tank. Both the inner buffer tank and the outer buffer tank are connected to the connecting structure, and the inner buffer tank and the outer buffer tank can rotate relative to each other through the connecting structure.

[0013] The outer buffer bucket can drive the inner buffer bucket to rotate during rotation via the connecting structure.

[0014] According to the present invention, a rotating anti-collision barrel is provided, wherein the connecting structure includes:

[0015] Inner ring, which is fixedly connected to the inner buffer tank;

[0016] An outer ring is fitted around the outer side of the inner ring and is fixedly connected to the outer buffer tank.

[0017] A plurality of rolling elements are rotatably disposed between the inner ring and the outer ring via a retainer, the inner ring being rotatable relative to the outer ring.

[0018] According to the present invention, a rotating anti-collision barrel is provided, wherein one of the outer ring and the outer buffer barrel is provided with a first slot, and the other is provided with a first engaging protrusion that engages with the first slot.

[0019] According to a rotating anti-collision barrel provided by the present invention, the outer buffer barrel is provided with a limiting boss, the limiting boss being able to abut against at least one side of the outer ring to restrict the movement of the outer ring away from the outer buffer barrel.

[0020] According to the present invention, a rotating anti-collision barrel is provided with a corrugated structure on the outer side wall of the outer buffer barrel. The corrugated structure includes a plurality of protrusions, which are spaced apart and arranged around the rotation center line of the outer buffer barrel.

[0021] The length of the protrusion extends along the axial direction of the outer buffer barrel.

[0022] According to a rotating anti-collision barrel provided by the present invention, the outer buffer barrel is provided with at least a first receiving chamber and a second receiving chamber. The first receiving chamber is located between the inner surface of the outer buffer barrel and the inner buffer barrel. The second receiving chamber is arranged around the first receiving chamber and is not connected to it. The second receiving chamber and the corrugated structure are arranged correspondingly.

[0023] The inner buffer bucket is located at least partially within the first receiving chamber, and the outer buffer bucket has an injection port that communicates with the second receiving chamber. The injection port is used to fill the second receiving chamber with buffer material to form a first buffer layer surrounding the outer component in the second receiving chamber.

[0024] According to the present invention, a rotating anti-collision barrel is provided, wherein the outer buffer barrel comprises:

[0025] The outer barrel has a recessed groove in the middle, and an opening corresponding to its bottom wall is provided on one side of the groove. The filling port is opened on the outer barrel.

[0026] A bucket lid is provided on the outer bucket body, and the bucket lid covers the opening of the groove;

[0027] The bucket lid and the groove cooperate to form the first receiving chamber, and there is a gap between the side wall of the groove and the outer side wall of the outer bucket to form the second receiving chamber.

[0028] According to the present invention, a rotating anti-collision barrel is provided in which one of the inner ring and the inner buffer barrel is provided with a second slot, and the other is provided with a second engaging protrusion that engages with the second slot.

[0029] According to a rotating anti-collision barrel provided by the present invention, the inner buffer barrel is provided with a supporting boss, and the supporting boss is at least able to support and abut against one side of the inner ring.

[0030] According to a rotating anti-collision barrel provided by the present invention, the inner buffer barrel is provided with a third chamber, and the third chamber is filled with buffer material to form a second buffer layer arranged around the outer component.

[0031] This invention provides a rotating impact-resistant drum. The invention comprises an inner and outer buffer drum connected by a connecting structure, allowing the inner and outer buffer drums to rotate relative to each other. Upon impact, the outer buffer drum rotates, achieving at least two effects: first, the rotation of the outer buffer drum converts some of the impact energy; second, the deformation of the outer buffer drum absorbs some of the impact energy; and third, the rotation of the outer buffer drum helps to change the vehicle's direction of travel. Furthermore, through the connecting structure, the rotation of the outer buffer drum causes the inner buffer drum to rotate, further converting the vehicle's impact energy. Therefore, even when the outer buffer drum is damaged, the inner buffer drum can continue to rotate under the action of the connecting structure, effectively converting impact energy into rotational energy, withstanding impact loads while maintaining integrity, and continuously and efficiently absorbing and buffering energy. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1This is a schematic diagram of the first structure of the rotating anti-collision barrel provided by the present invention;

[0034] Figure 2 This is a cross-sectional schematic diagram of the rotating anti-collision barrel provided by the present invention;

[0035] Figure 3 yes Figure 2 Enlarged schematic diagram of the structure at point A;

[0036] Figure 4 yes Figure 1 A schematic diagram of the decomposition process;

[0037] Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point B;

[0038] Figure 6 yes Figure 4 Enlarged schematic diagram of the structure at point C;

[0039] Figure 7 This is an exploded view of the connection structure provided by the present invention;

[0040] Figure 8 This is a schematic diagram of the second structure of the rotating anti-collision barrel provided by the present invention, wherein a reflective film is provided on the outer side wall of the outer buffer barrel;

[0041] Figure 9 yes Figure 8 A cross-sectional schematic diagram, wherein the second receiving chamber is provided with a first buffer layer, and the third receiving chamber is provided with a second buffer layer.

[0042] Figure label:

[0043] 10. External component; 20. Inner buffer tank; 21. Second protrusion; 22. Supporting boss; 23. Third chamber; 30. Outer buffer tank; 31. First protrusion; 32. Limiting boss; 33. Protrusion; 34. First receiving chamber; 35. Second receiving chamber; 36. Inlet; 37. Outer tank body; 371. Groove; 38. Tank lid;

[0044] 40. Connecting structure; 41. Inner ring; 42. Outer ring; 43. Rolling element; 44. Retainer; 45. Sealing ring; 51. First slot; 52. First snap-fit ​​protrusion; 61. First buffer layer; 62. Reflective film; 63. Second buffer layer; 71. Second slot; 72. Second snap-fit ​​protrusion. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention 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 this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0046] The following is combined Figures 1-9 This invention describes a rotating anti-collision barrel.

[0047] Reference Figure 1 , Figure 2 and Figure 4 According to the present invention, a rotating anti-collision barrel is provided, comprising: an outer component 10; an inner buffer barrel 20 rotatably fitted onto the outer component 10; an outer buffer barrel 30 rotatably fitted onto the outer component 10, the inner buffer barrel 20 being located between the outer buffer barrel 30 and the outer component 10; and a connecting structure 40 disposed between the inner buffer barrel 20 and the outer buffer barrel 30, both the inner buffer barrel 20 and the outer buffer barrel 30 being connected to the connecting structure 40, and the inner buffer barrel 20 and the outer buffer barrel 30 being able to rotate relative to each other through the connecting structure 40; wherein, during rotation, the outer buffer barrel 30 can drive the inner buffer barrel 20 to rotate through the connecting structure 40.

[0048] This invention provides a rotating impact-resistant drum. The invention comprises an inner buffer drum 20 and an outer buffer drum 30, connected by a connecting structure 40. This allows the inner and outer buffer drums 20 and 30 to rotate relative to each other. When the outer buffer drum 30 is impacted, it rotates, and this rotation has at least three effects: first, the rotation of the outer buffer drum 30 converts some of the impact energy; second, the deformation of the outer buffer drum 30 absorbs some of the impact energy; and third, the rotation of the outer buffer drum 30 helps to change the vehicle's direction of travel. Furthermore, through the connecting structure 40, the rotation of the outer buffer drum 30 causes the inner buffer drum 20 to rotate, further converting the vehicle's impact energy. Therefore, when the outer buffer drum 30 is damaged, the inner buffer drum 20 can continue to rotate under the action of the connecting structure 40, playing an energy conversion role. It can efficiently convert impact energy into rotational energy, withstand impact loads while maintaining integrity, and continuously and efficiently absorb and buffer energy.

[0049] It should be noted that, in some embodiments of the present invention, the external component 10 is a shaft, which may be a street light pole, a utility pole, a traffic sign post, or a road guardrail post, etc.

[0050] Understandably, referring to Figure 1 , Figure 2 and Figure 4In some embodiments of the present invention, there are two sets of connecting structures 40. The two sets of connecting structures 40 are respectively arranged at the upper and lower ends of the mating point of the outer buffer tank 30 and the inner buffer tank 20 to provide smooth rotational movement and maintain good axial positioning capability and high load bearing capacity.

[0051] Specifically, refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 In some embodiments of the present invention, the connecting structure 40 includes: an inner ring 41, which is fixedly connected to the end of the inner buffer barrel 20; an outer ring 42, which is sleeved on the outside of the inner ring 41 and fixedly connected to the end of the outer buffer barrel 30; and a plurality of rolling elements 43, which are rotatably disposed between the inner ring 41 and the outer ring 42 by means of a retainer 44, wherein the inner ring 41 is rotatable relative to the outer ring 42. With the above structure, the connecting structure 40 is a rolling bearing structure. The retainer 44 keeps the rolling elements 43 free to roll between the inner ring 41 and the outer ring 42. When bearing rotational loads, the rolling elements 43 can reduce friction and make the rotation between the inner ring 41 and the outer ring 42 smoother. Furthermore, by positioning the multiple rolling elements 43 using the retainer 44, it can prevent the rolling elements 43 from dislodging or colliding with each other, and ensure that the multiple rolling elements 43 are evenly distributed between the inner ring 41 and the outer ring 42. Through the synergistic effect of the inner ring 41, the outer ring 42, the rolling elements 43, and the retainer 44, the connecting structure 40 achieves relative rotation between the inner buffer tank 20 and the outer buffer tank 30, thereby transmitting and bearing rotational loads. Specifically, in some embodiments of the present invention, the rolling element 43 is a ball; in some embodiments, the rolling element 43 can also be a roller, which is not limited here.

[0052] In some embodiments, the connection structure 40 described above may also be configured as a double roller bearing and a self-aligning roller bearing, both of which can automatically adjust the misalignment of the shaft caused by the deflection and misalignment of the external component 10, the inner buffer passage and the outer buffer passage, thereby further improving the load-bearing capacity.

[0053] Understandably, referring to Figure 3 and Figure 7 In some embodiments of the present invention, the connecting structure 40 further includes two sealing rings 45, which are respectively embedded at the top of the inner ring 41 and the bottom of the outer ring 42, thereby preventing dust from entering.

[0054] Understandably, referring to Figure 4 , Figure 5 and Figure 7In some embodiments of the present invention, a first slot 51 is provided on the outer side wall of the outer ring 42, and a first engaging protrusion 52 engages with the outer buffer bucket 30 in the first slot 51. This structure increases the connection strength between the outer buffer bucket 30 and the outer ring 42, ensuring its stability and safety. The rotation of the outer buffer bucket 30 will cause the outer ring 42 to rotate; it also facilitates the loading, unloading, and replacement of damaged parts.

[0055] Specifically, refer to Figure 4 , Figure 5 and Figure 7 In some embodiments of the present invention, the upper and lower ends of the outer buffer barrel 30 are provided with first protrusions 31, and the first protrusions 31 have first channels that cooperate with the external components 10. The ends of the connecting structure 40 and the inner buffer barrel 20 are located in the first channels, and the center line of the first channel coincides with the rotation center line of the outer buffer channel. A plurality of first slots 51 are arranged at intervals around the rotation center line of the outer ring 42, and a plurality of first engaging protrusions 52 are arranged at intervals on the inner sidewall of the first channel of the first protrusions 31 and around the center line of the first channel, further improving the reliability and stability of the transmission.

[0056] In some embodiments, the first slot 51 is disposed on the outer buffer barrel 30, and the first snap-fit ​​protrusion 52 is disposed on the outer ring 42, which is not limited here.

[0057] Specifically, refer to Figures 2 to 5 In some embodiments of the present invention, a limiting boss 32 is radially provided on the outer buffer barrel 30. The limiting boss 32 can abut against one side of the outer ring 42 to restrict the movement of the outer ring 42 away from the outer buffer barrel 30. Using the above structure, the movement of the connecting structure 40 away from the outer buffer barrel 30 can be restricted, thus playing a positioning role. It can be understood that the limiting boss 32 is provided on the end of the first protrusion 31 facing away from the outer ring 42, and the limiting boss 32 is arranged around the center line of the first channel. In some embodiments, the limiting boss 32 can also abut against the outer ring 42, the sealing ring 45, and the inner ring 41, or the limiting boss 32 can abut against the outer ring 42 and the sealing ring 45; this is not limited here.

[0058] Understandably, referring to Figure 1 , Figure 2 and Figure 4In some embodiments of the present invention, the outer wall of the outer buffer barrel 30 is provided with a corrugated structure, the corrugated structure including a plurality of protrusions 33, the plurality of protrusions 33 being spaced apart and arranged around the rotation center line of the outer buffer barrel 30; wherein, the length of the protrusions 33 extends along the axial direction of the outer buffer barrel 30. With the above structure, firstly, the protrusions 33 contact the vehicle, increasing the friction between the outer buffer barrel 30 and the vehicle. This helps to provide better traction, making the vehicle more stable when in contact with the outer buffer barrel 30, reducing the possibility of slippage and deviation, and improving driving safety; it also allows the impact energy from the vehicle to be converted into rotational energy more efficiently; secondly, the protrusions 33 in the corrugated structure extend along the axial direction of the outer buffer barrel 30. When the vehicle contacts the outer buffer barrel 30, the protrusions 33 can provide additional cushioning, absorbing and dispersing the impact force. This helps to reduce the impact on the vehicle and occupants, protecting the safety of the vehicle and occupants; thirdly, the protrusions 33 form a clear pattern on the outer wall of the outer buffer barrel 30, increasing the visibility of the buffer barrel. This is crucial for other vehicles and pedestrians, allowing them to more easily detect the presence of the buffer barrel and take appropriate measures to avoid collisions or accidents. In some embodiments, the outer wall of the outer buffer barrel 30 may also be arc-shaped, i.e., without a corrugated structure.

[0059] Understandably, referring to Figure 2 , Figure 4 and Figure 9 In some embodiments of the present invention, the outer buffer tank 30 is provided with at least a first receiving chamber 34 and a second receiving chamber 35. The first receiving chamber 34 is located between the inner surface of the outer buffer tank 30 and the inner buffer tank 20. The second receiving chamber 35 is arranged around the first receiving chamber 34 and is not interconnected with it. The second receiving chamber 35 is arranged correspondingly to the corrugated structure. At least a portion of the inner buffer tank 20 is located within the first receiving chamber 34. The outer buffer tank 30 is provided with a filling port 36 that communicates with the second receiving chamber 35. The filling port 36 is used to fill the second receiving chamber 35 with buffer material so that a first buffer layer 61 arranged around the outer member 10 is formed in the second receiving chamber 35. With the above structure, after the outer buffer barrel 30 is impacted, the first buffer layer 61 formed by the corrugated structure and buffer material will be compressed first to achieve an energy absorption effect. At the same time, the outer buffer barrel 30 will rotate. The rotating outer buffer barrel 30 has two effects: first, the rotation of the outer buffer barrel 30 will convert some of the impact energy; second, the rotating crash barrel will change the vehicle's driving direction, thereby further reducing damage to the vehicle, driver, and structure. In addition, the second receiving chamber 35 surrounds the first receiving chamber 34 to provide more comprehensive and uniform protection. The above design can provide additional cushioning and shock absorption effects, and separate and isolate different spaces.

[0060] In some embodiments of the present invention, the outer buffer tank 30 is provided with at least a first receiving chamber 34 and a second receiving chamber 35. It can be understood that in this embodiment, the outer buffer tank 30 is provided with a first receiving chamber 34 and a second receiving chamber 35. In other embodiments, the outer buffer tank 30 may also form other receiving chambers, and the number of receiving chambers is not limited here. The inner buffer tank 20 is located at least part of the first receiving chamber 34. It can be understood that in this embodiment, the entire area of ​​the inner buffer tank 20 is located within the first receiving chamber 34. In other embodiments, the buffer area on the inner buffer tank 20 used for buffering is located within the first receiving chamber 34, while the portion of the inner buffer tank 20 used for connecting with the connecting structure 40 is located outside the first receiving chamber 34. This is not limited here.

[0061] It should be noted that the cushioning material can be injected into the second receiving chamber 35 through the injection port 36. Specifically, in this embodiment, the cushioning material can be sand, rubber granules, or aluminum foam. Of course, in some embodiments, the first receiving chamber 34 can also be filled with cushioning material without affecting the relative rotation of the outer buffer tank 30 and the inner buffer tank 20; this is not limited here.

[0062] Specifically, refer to Figure 1 , Figure 2 and Figure 4 In some embodiments of the present invention, the outer buffer tank 30 includes: an outer tank body 37, with a recessed groove 371 in the middle of the outer tank body 37, and an opening corresponding to its bottom wall on one side of the groove 371; a filling port 36 is opened on the outer tank body 37; and a tank cover 38, disposed on the top of the outer tank body 37, covering the upper opening of the groove 371; wherein the tank cover 38 and the groove 371 cooperate to form a first receiving chamber 34, and there is a gap between the side wall of the groove 371 and the outer side wall of the outer tank body 37 to form a second receiving chamber 35. The formation of the first receiving chamber 34 and the second receiving chamber 35 can be realized. The above design provides separation, protection, and buffering functions, while improving stability and sealing. This helps to provide a good cushioning effect, reduce the risk of damage and increase safety performance, and thus maintain the structural integrity of the externally rotating outer buffer bucket 30 while resisting external impact loads. It should be noted that the outer bucket body 37 and the bucket cover 38 can be detachably connected by means of snap-fit ​​or other means, or can be fixed by welding or other fixing methods, which can facilitate the installation, removal and replacement of damaged parts, and is highly practical.

[0063] In some embodiments of the present invention, the outer barrel 37 and the barrel lid 38 are both made of composite materials of EVA and polyurethane, which are not only impact-resistant and wear-resistant, but also have strong resilience.

[0064] It should also be noted that, referring to Figure 2and Figure 4 The corrugated structure is provided on the outer side wall of the outer barrel 37, and the bottom of the outer barrel 37 and the lid 38 are provided with first protruding posts 31; the cross section of the outer barrel 37 is cylindrical.

[0065] Specifically, refer to Figure 8 In some embodiments of the present invention, the outer side wall of the externally rotating buffer bucket 30 is provided with one or more reflective films 62 to serve as a warning to passing vehicles; it is understood that reflective films 62 may also be provided on the bucket lid 38.

[0066] Understandably, referring to Figure 4 , Figure 6 and Figure 7 In some embodiments of the present invention, the inner ring 41 is provided with a second slot 71, and the inner buffer barrel 20 is engaged with a second engaging protrusion 72 in the second slot 71. With this structure, the rotation of the outer buffer barrel 30 will cause the outer ring 42 to rotate, which in turn causes the rolling element 43 to roll and drive the inner ring 41 to rotate. With the inner ring 41 of the connecting structure 40 and the inner buffer barrel 20 engaged in the second slot 71 and the second engaging protrusion 72, the inner buffer barrel 20 will rotate accordingly, further converting the impact energy of the vehicle, and allowing for easy loading, unloading, and replacement of damaged parts. Of course, in some embodiments, the second slot 71 is provided in the inner buffer barrel 20, and the second engaging protrusion 72 is provided in the inner ring 41; this is not limited here.

[0067] Specifically, refer to Figure 2 , Figure 4 and Figure 6 In some embodiments of the present invention, the upper and lower ends of the inner buffer barrel 20 are provided with second protrusions 21, and the second protrusions 21 are provided with second through holes that cooperate with the external components 10. The center line of the second through hole coincides with the rotation center line of the inner buffer barrel. A plurality of second slots 71 are arranged at intervals around the rotation center line of the inner ring 41, and a plurality of second engaging protrusions 72 are arranged around the center line of the second through hole of the second protrusion 21, further improving the reliability and stability of the transmission.

[0068] Specifically, refer to Figures 2 to 4 as well as Figure 6 In some embodiments of the present invention, a supporting boss 22 is radially provided on the inner buffer tank 20. The supporting boss 22 can support and abut against one side of the inner ring 41, thereby restricting the movement of the connecting structure 40 toward the inner buffer tank 20 and playing a supporting and positioning role. It should be noted that the outer walls of the upper and lower second protrusions 21 of the inner buffer tank 20 are provided with supporting bosses 22. Of course, in some embodiments, the supporting boss 22 may also abut against the inner ring 41, the sealing ring 45 and the outer ring 42, or the supporting boss 22 may abut against the inner ring 41 and the sealing ring 45, which is not limited here.

[0069] It should be noted that the ball bearing composed of the connecting structure 40 is axially positioned by the radially arranged supporting boss 22 and limiting boss 32, resulting in stable installation and high reliability.

[0070] Understandably, referring to Figure 2 and Figure 9 In some embodiments of the present invention, a third chamber 23 is provided inside the inner buffer barrel 20, and the third chamber 23 is filled with buffer material to form a second buffer layer 63 arranged around the outer component 10, which can reduce a certain impact force; and when the externally rotating outer buffer barrel 30 is impacted, both the first buffer layer 61 and the second buffer layer 63 can reduce the impact force. When the externally rotating outer buffer barrel 30 is severely damaged by impact, the remaining impact energy can continue to be transferred and converted into the rotational kinetic energy of the inner buffer barrel 20 through the ball bearing formed by the connecting structure 40. The buffer material inside, forming the second buffer layer 63, can also absorb part of the impact energy.

[0071] In some embodiments of the present invention, the inner buffer tank 20 is made of a composite material of EVA and polyurethane, which is not only impact-resistant and wear-resistant, but also has strong resilience. The cross-section of the inner buffer tank 20 is cylindrical.

[0072] 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 them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotating crash barrel, characterized in that, The application relates to a buffer device, which comprises the following parts: an outer member (10); an inner buffer barrel (20) rotatably sleeved on the outer member (10); an outer buffer barrel (30) rotatably sleeved on the outer member (10), and the inner buffer barrel (20) is located between the outer buffer barrel (30) and the outer member (10); a connecting structure (40) arranged between the inner buffer barrel (20) and the outer buffer barrel (30), and the inner buffer barrel (20) and the outer buffer barrel (30) are connected to the connecting structure (40), and the inner buffer barrel (20) and the outer buffer barrel (30) can rotate relative to each other through the connecting structure (40); wherein the outer buffer barrel (30) can drive the inner buffer barrel (20) to rotate through the connecting structure (40) during rotation; the outer side wall of the outer buffer barrel (30) is provided with a corrugated structure; the outer buffer barrel (30) is provided with at least a first accommodating chamber (34) and a second accommodating chamber (35), the first accommodating chamber (34) is located between the inner surface of the outer buffer barrel (30) and the inner buffer barrel (20), the second accommodating chamber (35) is arranged around the first accommodating chamber (34) and is not communicated with each other, and the second accommodating chamber (35) is arranged correspondingly to the corrugated structure; wherein the inner buffer barrel (20) is located at least partially in the first accommodating chamber (34), the outer buffer barrel (30) is provided with a filling opening (36) communicated with the second accommodating chamber (35), and the filling opening (36) is used for filling the second accommodating chamber (35) with buffer material, so that a first buffer layer (61) arranged around the outer member (10) is formed in the second accommodating chamber (35).

2. The rotating crash barrel of claim 1, wherein, The connecting structure (40) comprises: an inner ring (41) fixedly connected with the inner buffer barrel (20); an outer ring (42) sleeved on the outer side of the inner ring (41), and the outer ring (42) is fixedly connected with the outer buffer barrel (30); a plurality of rolling members (43) rollably arranged between the inner ring (41) and the outer ring (42) through a retainer (44), and the inner ring (41) can rotate relative to the outer ring (42).

3. A rotating crash barrel according to claim 2, characterised in that, One of the outer ring (42) and the outer buffer barrel (30) is provided with a first clamping groove (51), and the other is provided with a first clamping protrusion (52) matched with the first clamping groove (51).

4. The rotating crash barrel of claim 2, wherein, The outer buffer barrel (30) is provided with a limiting boss (32), and the limiting boss (32) can abut against at least one side surface of the outer ring (42) to limit the movement of the outer ring (42) away from the outer buffer barrel (30).

5. The rotating crash barrel of claim 1, wherein, The corrugated structure comprises a plurality of protruding parts (33) arranged at intervals and around the rotation center line of the outer buffer barrel (30); wherein the length of the protruding part (33) extends along the axial direction of the outer buffer barrel (30).

6. The rotating crash barrel of claim 1, wherein, The outer buffer barrel (30) comprises: An outer barrel body (37) is provided with a recess (371) in the middle, and the recess (371) is provided with an opening corresponding to the bottom wall. The pouring opening (36) is arranged on the outer barrel body (37). A barrel cover (38) is arranged on the outer barrel body (37), and the barrel cover (38) covers the opening of the recess (371). The barrel cover (38) and the recess (371) cooperate to form the first accommodating chamber (34), and the side wall of the recess (371) and the outer side wall of the outer barrel body (37) have a spacing to form the second accommodating chamber (35).

7. The rotating crash barrel of claim 2, wherein, One of the inner ring (41) and the inner buffer barrel (20) is provided with a second clamping groove (71), and the other is provided with a second clamping protrusion (72) matched with the second clamping groove (71).

8. A rotating crash barrel according to claim 7, characterised in that, The inner buffer barrel (20) is provided with a supporting boss (22), which can at least support and abut one side of the inner ring (41).

9. The rotating crash barrel of claim 1, wherein, The inner buffer barrel (20) is provided with a third chamber (23), and the third chamber (23) is filled with a buffer material to form a second buffer layer (63) surrounding the outer member (10).

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