Trailing anti-collision device for road maintenance operation vehicle

Abstract

The invention discloses a trailer anti-collision device for a road maintenance operation vehicle, and relates to the technical field of vehicle protection, the trailer anti-collision device comprises an anti-collision cover, a first protection assembly, a second protection assembly, a sliding assembly and a force unloading assembly, and the force unloading assembly is connected with the tail of the operation vehicle through a trailer; the first protection assembly comprises supporting ribs arranged on the inner side of the anti-collision cover and a cross beam, the cross beam is connected with the operation vehicle through the second protection assembly and the force unloading assembly, and the supporting ribs and the cross beam are elastically installed. The force unloading assembly comprises a first inclined frame and a second inclined frame which are arranged in parallel, the first protection assembly and the second protection assembly are movably installed through the first inclined frame and the second inclined frame, a force unloading frame is arranged at the bottom of the first inclined frame, and attaching claws making contact with the ground are distributed at the bottom of the force unloading frame. The first protection assembly and the second protection assembly are used for conducting energy absorption protection on collision in sequence, and an attachment claw in the force unloading assembly makes contact with the ground, so that collision force is prevented from being transmitted to an operation vehicle.

Description

Technical Field

[0001] This invention relates to the field of vehicle protection technology, specifically a towed anti-collision device for road maintenance vehicles. Background Technology

[0002] Road maintenance vehicles are special vehicles that generally maintain low speeds or remain stationary during operations. To avoid collisions between vehicles behind them, a combination of warning signs, cones, and lights is typically used to alert other vehicles to give way. However, these protective measures are all passive, and there is still a risk of collision if vehicles behind are speeding or inattentive. To protect the safety of both the maintenance vehicle and the personnel, active safety devices need to be towed to the rear of the maintenance vehicle.

[0003] Existing trailer collision avoidance devices still transmit the impact force to the working vehicle through the trailer connection point when the working vehicle is hit, which is insufficient for protecting low-speed vehicles and personnel working around the vehicle. Summary of the Invention

[0004] The purpose of this invention is to provide a towed anti-collision device for road maintenance vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A towed anti-collision device for a road maintenance vehicle includes an anti-collision cover, a protective component one installed inside the anti-collision cover, a protective component two horizontally connected to the protective component one, a sliding component at the bottom of the protective component two, a force-relieving component horizontally connected to the protective component two, a tow frame connected to the force-relieving component, and the force-relieving component connected to the rear of the vehicle via the tow frame; the protective component one includes a support rib fixedly installed inside the anti-collision cover, a crossbeam provided inside the anti-collision cover, the crossbeam being connected to the vehicle via the protective component two and the force-relieving component, and the support rib and the crossbeam being elastically installed; the force-relieving component includes a tilting frame one and a tilting frame two arranged in parallel, the protective component one and the protective component two being movably installed via the tilting frame one and the tilting frame two, a force-relieving frame at the bottom of the tilting frame one, and attachment claws for contacting the ground distributed at the bottom of the force-relieving frame.

[0007] As a further embodiment of the present invention: a connecting groove is provided on the first tilting frame, the end of the second tilting frame is slidably engaged with the connecting groove, the height of the first tilting frame and the second tilting frame near the working vehicle is lower than the height of the other end, a counterweight is provided in the unloading frame, and a second collapse groove is distributed at the end of the unloading frame near the attachment claw.

[0008] As a further embodiment of the present invention: the crossbeam is connected to the working vehicle through the second protective component and the unloading component. A first docking block is distributed on the crossbeam, and a first plug-in post is provided on the supporting rib to be inserted into the first docking block. A first unloading spring is sleeved on the first plug-in post.

[0009] As a further embodiment of the present invention: two sets of supporting ribs are arranged in parallel, and the two sets of supporting ribs are fixedly installed on the upper and lower sides of the anti-collision cover. The two ends of the supporting ribs are inclined towards the direction of the working vehicle. The two sets of supporting ribs are fixedly connected. Two sets of crossbeams are arranged corresponding to the supporting ribs. Side beams are inserted and installed at both ends of the two sets of crossbeams. The side beams are connected to the second protective component.

[0010] As a further embodiment of the present invention: the second protective component includes a vertical frame, which is fixedly connected to the side beam. An energy-absorbing box is provided on the side beam, and a first collapse groove is distributed on the energy-absorbing box. A transfer beam is connected to the end of the energy-absorbing box, and a longitudinal beam is provided at the bottom of the transfer beam. A connecting frame is fixedly provided at the end of the longitudinal beam. The transfer beam and the connecting frame cooperate with each other. The longitudinal beam is rigidly connected to the working vehicle through a force-relieving component. An inclined pile is inserted into the longitudinal beam, and the bottom end of the inclined pile is inclined towards the direction of the working vehicle. An unlocking part is provided between the inclined pile and the transfer beam.

[0011] As a further embodiment of the present invention: the unlocking part includes a receiving groove provided on the transmission beam, the end of the transmission beam is provided with a second insertion post, the longitudinal beam is fixedly provided with a second docking block, the second insertion post and the second docking block are inserted into each other, the second insertion post is sleeved with a second unloading spring, the side of the second insertion post facing the inclined pile is provided with a locking rod, and the locking rod is inserted into the inclined pile.

[0012] As a further embodiment of the present invention: the sliding assembly includes a support frame, the two ends of the support frame are provided with mounting flanges, the mounting flanges are provided with lifting cylinders, the bottom of the support frame is provided with a limit strip, the limit strip is provided with a snap-fit ​​groove, a movable frame is slidably installed in the snap-fit ​​groove, the movable frame is provided with sliding wheels, the lifting cylinder is connected to the movable frame, the support frame is provided with connecting angle irons, the connecting angle irons are provided with mounting grooves, and the end of the longitudinal beam is connected to the mounting groove.

[0013] As a further embodiment of the present invention: the unloading assembly further includes a horizontal frame and an abutment frame, the first inclined frame is fixedly installed between the horizontal frame and the second inclined frame is fixedly installed between the abutment frame, the towing frame is fixedly connected to the center of the abutment frame, and the installation height of the horizontal frame is higher than that of the abutment frame.

[0014] As a further embodiment of the present invention: multiple sets of warning lights are distributed on the front of the anti-collision cover, a camera is provided in the center of the anti-collision cover, and an upper protective plate is provided on the top of the anti-collision cover.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The anti-collision device is connected by tilt frame one and tilt frame two. When the work vehicle stops, due to the overall inertia of the anti-collision device, the tilt frame one and tilt frame two in the unloading component will overlap with each other with the cooperation of the sliding component. During the overlapping process, the unloading frame will move down, and the attachment claws distributed at the bottom will contact the ground, thus providing reliable protection in the event of an impact. When the work vehicle restarts, the tilt frame two and tilt frame one will change from the overlapping state to the separated extended state, which will drive the end of tilt frame one to rise, so that the unloading frame and attachment claws at the bottom will be lifted up and detached from the ground, thus ensuring that the unloading component will not interfere with the ground when the work vehicle is moving.

[0017] (2) By setting a counterweight within the unloading frame, the center of gravity of the entire anti-collision device is made to fall on the side of the sliding assembly closer to the work vehicle. Protective assembly one, protective assembly two, and tilting frame one will move to the right along tilting frame two, as shown below. Figure 11 As shown, this causes the stress-relieving frame in the stress-relieving assembly to move downwards, and the attachment claws to contact the ground, thus providing better stress relief protection in the event of an impact. A second crumple zone is provided in the lower area of ​​the stress-relieving frame. During an impact, the stress-relieving frame can absorb energy and collapse through the second crumple zone, avoiding damage to other components. When reused, only the stress-relieving frame needs to be replaced, reducing the maintenance cost of the anti-collision device.

[0018] (3) When the first unloading spring of the protective component is fully compressed, there is still an additional impact force. At this time, the second protective component is activated. The additional impact force is transmitted to the energy absorption box through the crossbeam. The energy absorption box is absorbing energy and collapsing through the first collapse groove. Furthermore, the transmission beam compresses the second unloading spring to absorb energy. At this time, the transmission beam moves to the right in conjunction with the second plug-in column. After the unloading spring is compressed to its shortest length, the locking rod is disengaged from the inclined pile. The inclined pile slides down the longitudinal beam and finally falls to the ground. The interaction between the inclined pile, the ground and the longitudinal beam is used to further reduce the impact force. Attached Figure Description

[0019] Figure 1 This is a first-view structural diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the second perspective structure of the present invention.

[0021] Figure 3This is a schematic diagram of the connection structure between the anti-collision cover and the protective component one in this invention.

[0022] Figure 4 This is a schematic diagram of the structure of the protective component one in this invention.

[0023] Figure 5 This is a schematic diagram of the structure of the second protective component in this invention.

[0024] Figure 6 This is a schematic diagram of the installation of the inclined pile in this invention.

[0025] Figure 7 This is a schematic diagram of the installation of the sliding component in this invention.

[0026] Figure 8 This is a schematic diagram of the installation of the sliding wheel in this invention.

[0027] Figure 9 This is a schematic diagram of the force-relieving component in this invention.

[0028] Figure 10 This is a schematic diagram of the attachment claw installation in this invention.

[0029] Figure 11 This is a schematic diagram showing the installation angles of tilting frame one and tilting frame two in this invention.

[0030] In the diagram: 1. Anti-collision shield; 100. Camera; 10. Warning light; 11. Upper guard plate; 2. Protective component one; 20. Support rib; 21. Insertion column one; 22. Crossbeam; 23. Connecting block one; 24. Unloading spring one; 25. Side beam; 3. Protective component two; 30. Vertical frame; 31. Energy absorption box; 32. Collapse groove one; 33. Transfer beam; 34. Receiving groove; 35. Longitudinal beam; 36. Connecting frame; 37. Inclined pile; 38. Connecting block two; 39. Insertion column two; 310. Unloading Force spring 2; 311, locking rod; 4, sliding assembly; 40, support frame; 41, connecting angle iron; 42, mounting groove; 43, sliding wheel; 44, mounting flange; 45, lifting cylinder; 46, limit bar; 47, snap-fit ​​slide groove; 48, moving frame; 5, unloading assembly; 50, horizontal frame; 51, tilting frame 1; 510, connecting slide groove; 52, tilting frame 2; 53, abutment frame; 54, unloading frame; 55, counterweight; 56, collapse groove 2; 57, attachment claw; 6, trailer frame. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0032] like Figures 1-4 , Figures 9-11As shown, a towed anti-collision device for a road maintenance vehicle includes an anti-collision cover 1. A protective component 2 is installed inside the anti-collision cover 1. A second protective component 3 is horizontally connected to the first protective component 2. A sliding component 4 is located at the bottom of the second protective component 3. A force-relieving component 5 is horizontally connected to the second protective component 3. The force-relieving component 5 is connected to a trailer frame 6 and is connected to the rear of the vehicle via the trailer frame 6. The first protective component 2 includes supporting ribs 20 fixedly installed inside the anti-collision cover 1. A crossbeam 22 is provided on the inner side of the cover 1. The crossbeam 22 is connected to the work vehicle through the second protective component 3 and the unloading component 5. The supporting rib 20 is elastically installed between the crossbeam 22. The unloading component 5 includes a first inclined frame 51 and a second inclined frame 52 arranged in parallel. The first protective component 2 and the second protective component 3 are movably installed through the first inclined frame 51 and the second inclined frame 52. An unloading frame 54 is provided at the bottom of the first inclined frame 51. An attachment claw 57 that contacts the ground is distributed at the bottom of the unloading frame 54.

[0033] Specifically, the towed anti-collision device is integrally connected to the trailer frame 6 and the rear of the work vehicle. It utilizes the unloading component 5 to unload the impact force and protect the work vehicle. The impact force is transferred to the ground via tilting frame one 51 and tilting frame two 52. The unloading component 5 is implemented through tilting frame one 51 and tilting frame two 52, which are movably installed together. In the event of an impact, the impact force reaches the unloading component 5 through protective components one 2 and two 3. Then, protective components one 2 and two 3, the sliding component 4, and tilting frame one 51 move forward along tilting frame two 52, causing the unloading frame 54 and the bottom-mounted attachment claws 57 to further penetrate the ground, further improving the anti-collision and unloading effect, preventing the impact force from being transferred to the work vehicle, and effectively protecting the safety of the work vehicle.

[0034] More specifically, the anti-collision device is movably connected via tilting frame 1 51 and tilting frame 2 52. When the work vehicle stops, due to the overall inertia of the anti-collision device, in cooperation with the sliding component 4, tilting frame 1 51 and tilting frame 2 52 in the unloading component 5 will overlap and cooperate with each other. During the overlapping process, the unloading frame 54 will move downward, thereby allowing the attachment claws 57 distributed at the bottom to contact the ground, thus providing reliable protection in the event of an impact. When the work vehicle restarts, tilting frame 2 52 and tilting frame 1 51 will change from an overlapping state to a separated and extended state, which will cause the end of tilting frame 1 51 to rise, thereby causing the unloading frame 54 and attachment claws 57 at the bottom to be lifted and detached from the ground, thus ensuring that the unloading component 5 will not interfere with the ground when the work vehicle is moving.

[0035] Furthermore, such as Figures 9-11As shown, the first tilting frame 51 is provided with a connecting slide groove 510, and the end of the second tilting frame 52 is slidably engaged with the connecting slide groove 510. The height of the first tilting frame 51 and the second tilting frame 52 near the working vehicle is lower than the height of the other end. The unloading frame 54 is provided with a counterweight block 55, and the unloading frame 54 near the attachment claw 57 is provided with a second collapse groove 56.

[0036] Specifically, by setting a counterweight 55 inside the unloading frame 54, the center of gravity of the entire anti-collision device is made to fall on the side of the sliding assembly 4 closer to the work vehicle. The first protective assembly 2, the second protective assembly 3, and the first tilting frame 51 will move to the right along the second tilting frame 52. Figure 11 As shown, this causes the unloading frame 54 in the unloading assembly 5 to move downwards, and the attachment claw 57 to contact the ground, thereby providing better unloading protection in the event of an impact. A second crumple zone 56 is provided in the lower area of ​​the unloading frame 54. In the event of an impact, the unloading frame 54 can absorb energy and crumple through the second crumple zone 56, avoiding damage to other components. When reused, the unloading frame 54 can be replaced, reducing the maintenance cost of the anti-collision device.

[0037] Furthermore, such as Figure 2 , Figure 3 , Figure 4 As shown, the crossbeam 22 is connected to the working vehicle through the second protective component 3 and the unloading component 5. The crossbeam 22 is provided with connecting blocks 23. The supporting rib 20 is provided with a plug-in post 21 that is inserted into the connecting blocks 23. The unloading spring 24 is sleeved on the plug-in post 21.

[0038] Specifically, when an impact occurs, the crash shield 1 first disperses the impact force to the support rib 20. The support rib 20 is connected to the docking block 23 through the plug-in post 21. When there is relative displacement between the support rib 20 and the crossbeam 22, the impact force is dispersed to the unloading spring 24. If the impact force is insufficient to fully compress the unloading spring 24, the impact protection will be borne by the protective component 2.

[0039] Furthermore, such as Figures 2-4 As shown, two sets of supporting ribs 20 are arranged in parallel. The two sets of supporting ribs 20 are fixedly installed on the upper and lower sides of the crash shield 1. The two ends of the supporting ribs 20 are inclined towards the direction of the working vehicle. The two sets of supporting ribs 20 are fixedly connected. Two sets of crossbeams 22 are arranged corresponding to the supporting ribs 20. Side beams 25 are inserted and installed at both ends of the two sets of crossbeams 22. The side beams 25 are connected to the second protective component 3.

[0040] Specifically, two sets of support ribs 20 and crossbeams 22 are provided to enhance the overall anti-collision effect of the crash shield 1. In the event of an offset collision, the impact force can be dispersed to the two sets of support ribs 20 and crossbeams 22, minimizing the concentration of impact force in a single area of ​​the crash shield 1 and improving the overall protective effect of the crash shield device. Simultaneously, side beams 25 are provided at both ends of the crossbeams 22. In the event of a severe offset collision, the side beams 25 and the crossbeams 22 absorb impact energy through deformation at the connection point, while simultaneously guiding the colliding vehicle away from the work vehicle, further reducing the impact damage to the work vehicle.

[0041] Furthermore, such as Figure 2 , Figure 5 , Figure 6 As shown, the second protective component 3 includes a vertical frame 30, which is fixedly connected to the side beam 25. An energy-absorbing box 31 is provided on the side beam 25, and a first collapse groove 32 is distributed on the energy-absorbing box 31. A transfer beam 33 is connected to the end of the energy-absorbing box 31. A longitudinal beam 35 is provided at the bottom of the transfer beam 33. A connecting frame 36 is fixedly provided at the end of the longitudinal beam 35. The transfer beam 33 and the connecting frame 36 cooperate with each other. The longitudinal beam 35 is rigidly connected to the working vehicle through the force-relieving component 5. An inclined pile 37 is inserted into the longitudinal beam 35. The bottom end of the inclined pile 37 is inclined towards the direction of the working vehicle. An unlocking part is provided between the inclined pile 37 and the transfer beam 33.

[0042] Furthermore, such as Figure 5 , Figure 6 As shown, the unlocking part includes a receiving groove 34 provided on the transmission beam 33. The end of the transmission beam 33 is provided with a second insertion post 39. A second docking block 38 is fixedly provided on the longitudinal beam 35. The second insertion post 39 and the second docking block 38 are inserted into each other. A second unloading spring 310 is sleeved on the second insertion post 39. A locking rod 311 is provided on the side of the second insertion post 39 facing the inclined pile 37. The locking rod 311 is inserted into the inclined pile 37.

[0043] Specifically, when the second type of unloading spring 24 of the protective component is fully compressed, and there is still additional impact force, the second protective component 3 activates protection. The additional impact force is transmitted to the energy-absorbing box 31 through the crossbeam 22, where it is absorbed and collapsed by the collapse groove 32 on the energy-absorbing box 31. Further, the transfer beam 33 compresses the unloading spring 310 to absorb energy. At this time, the transfer beam 33 moves to the right in conjunction with the plug-in post 39. After the unloading spring 310 is compressed to its shortest length, the locking rod 311 disengages from the inclined pile 37. The inclined pile 37 slides down the longitudinal beam 35 and finally falls to the ground. The interaction between the inclined pile 37, the ground, and the longitudinal beam 35 further reduces the impact force.

[0044] Furthermore, such as Figure 2 , Figure 7 , Figure 8 As shown, the sliding assembly 4 includes a support frame 40, with mounting flanges 44 at both ends of the support frame 40. A lifting cylinder 45 is mounted on the mounting flange 44. A limit strip 46 is provided at the bottom of the support frame 40. A snap-fit ​​groove 47 is provided in the limit strip 46. A movable frame 48 is slidably mounted in the snap-fit ​​groove 47. A sliding wheel 43 is mounted on the movable frame 48. The lifting cylinder 45 is connected to the movable frame 48. Connecting angle irons 41 are distributed on the support frame 40. A mounting groove 42 is provided on the connecting angle iron 41. The end of the longitudinal beam 35 is connected to the mounting groove 42.

[0045] Specifically, the height of the sliding wheel 43 supporting the overall anti-collision device is adjusted by the lifting cylinder 45, thereby adjusting the height of the anti-collision cover 1 and the height of the end trailer 6, so as to adapt to the towing protection of different types of vehicles with different heights.

[0046] Furthermore, such as Figure 2 , Figure 9 As shown, the unloading assembly 5 also includes a horizontal frame 50 and an abutment frame 53. The first tilting frame 51 is fixedly installed between the horizontal frame 50 and the second tilting frame 52 is fixedly installed between the abutment frame 53. The towing frame 6 is fixedly connected to the center of the abutment frame 53. The installation height of the horizontal frame 50 is higher than that of the abutment frame 53.

[0047] Furthermore, such as Figure 2 As shown, the front of the crash shield 1 is provided with multiple sets of warning lights 10, the center of the crash shield 1 is provided with a camera 100, and the top of the crash shield 1 is provided with an upper protective plate 11.

[0048] Specifically, the camera 100 is used to monitor the driving status behind the anti-collision device, making it easier for the operator to control the vehicle's start and stop. Meanwhile, the upper guard plate 11 can be used to install a protective cover. Figure 1 (Not shown in the image) The part between the upper guard plate 11 and the trailer 6 is sealed off to prevent internal parts of the anti-collision device from flying out in the event of a collision, thus preventing damage to other vehicles or pedestrians.

[0049] The working principle of this invention embodiment is as follows:

[0050] like Figures 1-11As shown, the towed anti-collision device is integrally connected to the trailer frame 6 and the rear of the work vehicle. It utilizes the unloading component 5 to unload the impact force and protect the work vehicle. The impact force is transferred to the ground via tilting frame one 51 and tilting frame two 52. The unloading component 5 is achieved through tilting frame one 51 and tilting frame two 52, which are movably installed together. In the event of an impact, the impact force reaches the unloading component 5 through protective component one 2 and protective component two 3. Then, protective component one 2, protective component two 3, sliding component 4, and tilting frame one 51 move forward along tilting frame two 52, causing the unloading frame 54 and the attachment claws 57 distributed at the bottom to further penetrate the ground, further improving the anti-collision and unloading effect, thereby protecting the safety of the work vehicle connected to the anti-collision device. The anti-collision device is movably connected via tilting frame 1 51 and tilting frame 2 52. When the work vehicle stops, due to the overall inertia of the anti-collision device, in cooperation with the sliding component 4, tilting frame 1 51 and tilting frame 2 52 in the unloading component 5 will overlap and cooperate with each other. During the overlapping process, the unloading frame 54 will move downward, causing the attachment claws 57 distributed at the bottom to contact the ground, thus providing reliable protection in the event of an impact. When the work vehicle restarts, tilting frame 2 52 and tilting frame 1 51 will change from an overlapping state to a separated and extended state, which will cause the end of tilting frame 1 51 to rise, thereby lifting the unloading frame 54 and attachment claws 57 at the bottom and lifting them off the ground, thus ensuring that the unloading component 5 will not interfere with the ground when the work vehicle is moving. By setting a counterweight 55 inside the unloading frame 54, the center of gravity of the entire anti-collision device will fall on the side of the sliding component 4 closer to the work vehicle. The protective components 1 2, 2 3, and tilting frame 1 51 will move to the right along tilting frame 2 52, as... Figure 11As shown, this causes the unloading frame 54 in the unloading assembly 5 to move downwards, and the attachment claw 57 to contact the ground, thereby providing better unloading protection in the event of an impact. A second crumple zone 56 is provided in the lower area of ​​the unloading frame 54. In the event of an impact, the unloading frame 54 can absorb energy and collapse through the second crumple zone 56, avoiding damage to other components. When reused, the unloading frame 54 can be replaced, reducing the maintenance cost of the anti-collision device. In the event of an impact, the anti-collision cover 1 first disperses the impact force to the support rib 20. The support rib 20 is connected to the docking block 23 through the plug-in post 21. When there is relative displacement between the support rib 20 and the crossbeam 22, the impact force is dispersed to the unloading spring 24. If the impact force is insufficient to fully compress the unloading spring 24, the impact protection will be borne by the protective assembly 2. Two sets of supporting ribs 20 and crossbeams 22 are provided to enhance the overall anti-collision effect of the crash shield 1. In the event of an offset collision, the impact force can be dispersed to the two sets of supporting ribs 20 and crossbeams 22, minimizing the concentration of impact force in a single area of ​​the crash shield 1 and improving the overall protective effect of the crash shield device. Simultaneously, side beams 25 are provided at both ends of the crossbeams 22. In the event of a severe offset collision, the side beams 25 and the crossbeams 22 absorb impact energy through deformation at the connection point, while simultaneously guiding the colliding vehicle, causing it to deviate from the working vehicle and further reducing impact damage to the working vehicle. When the second type of unloading spring 24 of the protective component is fully compressed, there is still an additional impact force. At this time, the second type of protective component 3 activates protection. The additional impact force is transmitted to the energy absorption box 31 through the crossbeam 22. The energy absorption box 31 absorbs energy and collapses through the collapse groove 32 on the energy absorption box 31. Furthermore, the transmission beam 33 compresses the unloading spring 310 to absorb energy. At this time, the transmission beam 33 moves to the right in conjunction with the plug-in post 39. After the unloading spring 310 is compressed to its shortest length, the locking rod 311 disengages from the inclined pile 37. The inclined pile 37 slides down the longitudinal beam 35 and finally falls to the ground. The interaction between the inclined pile 37, the ground, and the longitudinal beam 35 further reduces the impact force.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A trailer crash guard for a road maintenance vehicle comprising a crash guard cover (1), characterized in that, The anti-collision cover (1) is provided with a protection assembly one (2), the protection assembly one (2) is horizontally connected with a protection assembly two (3), the bottom of the protection assembly two (3) is provided with a sliding assembly (4), the protection assembly two (3) is horizontally connected with a force relieving assembly (5), the force relieving assembly (5) is connected with a trailer (6), the force relieving assembly (5) is connected with the tail of the working vehicle through the trailer (6); The protection assembly one (2) includes a support rib (20) fixedly arranged in the inside of the anti-collision cover (1), the inside of the anti-collision cover (1) is provided with a crossbeam (22), the crossbeam (22) is connected between the working vehicle through the protection assembly two (3) and the force relieving assembly (5), the support rib (20) is elastically mounted between the crossbeam (22); The force relieving assembly (5) includes an inclined frame one (51) and an inclined frame two (52) arranged in parallel, the protection assembly one (2) and the protection assembly two (3) are movably mounted through the inclined frame one (51) and the inclined frame two (52), the bottom of the inclined frame one (51) is provided with a force relieving frame (54), the bottom of the force relieving frame (54) is provided with an attachment claw (57) in contact with the ground.

2. A trailer crash avoidance device for a road maintenance vehicle as claimed in claim 1, wherein The inclined frame one (51) is provided with a connecting sliding groove (510), the end of the inclined frame two (52) is slidably connected with the connecting sliding groove (510), the height of the inclined frame one (51) and the inclined frame two (52) close to one end of the working vehicle is lower than the height of the other end, the force relieving frame (54) is provided with a counterweight (55) therein, the end of the force relieving frame (54) close to the attachment claw (57) is provided with a collapse groove two (56).

3. A trailer crash avoidance device for a road maintenance vehicle as defined in claim 1, characterized in that The crossbeam (22) is connected between the working vehicle through the protection assembly two (3) and the force relieving assembly (5), the crossbeam (22) is provided with a butt joint block one (23) arranged in distribution, the support rib (20) is provided with a plug-in column one (21) plugged with the butt joint block one (23), the plug-in column one (21) is sleeved with a force relieving spring one (24).

4. A trailer crash avoidance device for a road maintenance vehicle as claimed in claim 3, wherein The support rib (20) is arranged in parallel with two groups, the two groups of support ribs (20) are fixedly mounted on the upper and lower sides of the anti-collision cover (1), the two ends of the support rib (20) are obliquely arranged towards the working vehicle, the two groups of support ribs (20) are fixedly connected, the crossbeam (22) is provided with two groups corresponding to the support rib (20), the two ends of the two groups of crossbeams (22) are plug-in mounted with a side beam (25), the side beam (25) is connected with the protection assembly two (3).

5. A trailer crash avoidance device for a road maintenance vehicle as claimed in claim 4, wherein, The protection assembly two (3) comprises a vertical frame (30), the vertical frame (30) is fixedly connected between the boundary beam (25), the boundary beam (25) is provided with an energy absorption box (31), the energy absorption box (31) is provided with a collapse groove (32), the end of the energy absorption box (31) is connected with a transmission beam (33), the bottom of the transmission beam (33) is provided with a longitudinal beam (35), the end of the longitudinal beam (35) is fixedly provided with a connecting frame (36), the transmission beam (33) and the connecting frame (36) are matched with each other, the longitudinal beam (35) is rigidly connected between the unloading assembly (5) and the working vehicle, the longitudinal beam (35) is inserted with an inclined pile (37), the bottom end of the inclined pile (37) is inclinedly arranged to the direction of the working vehicle, and the inclined pile (37) is provided with an unlocking part between the transmission beam (33).

6. A trailer crash avoidance device for a road maintenance vehicle as claimed in claim 5, wherein, The unlocking part comprises a containing groove (34) arranged on the transmission beam (33), the end of the transmission beam (33) is provided with a second inserting column (39), the longitudinal beam (35) is fixedly provided with a second butt block (38), the second inserting column (39) and the second butt block (38) are inserted with each other, the second inserting column (39) is sleeved with a second unloading spring (310), and the side, towards the inclined pile (37), of the second inserting column (39) is provided with a locking rod (311); the locking rod (311) and the inclined pile (37) are inserted with each other.

7. A trailer crash avoidance device for a road maintenance vehicle as claimed in claim 6, wherein, The sliding assembly (4) comprises a support frame (40), both ends of the support frame (40) are provided with mounting flanges (44), the mounting flanges (44) are provided with lifting cylinders (45), the bottom of the support frame (40) is provided with a limiting strip (46), the limiting strip (46) is provided with a clamping sliding groove (47), the clamping sliding groove (47) is slidably installed with a moving frame (48), the moving frame (48) is installed with sliding wheels (43), the lifting cylinders (45) are connected with the moving frame (48), the support frame (40) is provided with connecting angle irons (41) at intervals, the connecting angle irons (41) are provided with mounting grooves (42), and the ends of the longitudinal beam (35) are connected with the mounting grooves (42).

8. A trailer crash avoidance device for a road maintenance vehicle according to claim 7, characterised in that, The unloading assembly (5) further comprises a horizontal frame (50) and an abutting frame (53), the inclined frame one (51) is fixedly installed between the horizontal frame (50), the inclined frame two (52) is fixedly installed between the abutting frame (53), the towing frame (6) is fixedly connected with the center of the abutting frame (53), and the mounting height of the horizontal frame (50) is higher than that of the abutting frame (53).

9. A trailer crash avoidance device for a road maintenance vehicle as defined in claim 1, characterized in that The front surface of the anti-collision cover (1) is provided with a plurality of warning lights (10), the center part of the anti-collision cover (1) is provided with a camera (100), and the top of the anti-collision cover (1) is provided with an upper guard plate (11).

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