A safety buffer device for highway maintenance operation area

Abstract

The present invention discloses a safety buffer device for highway maintenance operation area, including a plurality of fixed brackets, a fixing device slidably connected to the outer surface of a connecting rod 5 is provided on the side of the lower part of the plurality of fixed brackets close to each other, a limiting device is provided on the upper part of the inner cavity of the plurality of fixed brackets, and a transmission device is provided on the lower part of the inner cavity of the plurality of fixed brackets. The safety buffer device for highway maintenance operation area described in the present invention is provided with a fixing device, and when the buffer device needs to be installed, the connecting rod 5 in the two fixed brackets can be put into the inner cavity of the fixing device, and then the transmission ring 2 is rotated to drive the positioning device to move through the transmission rod and the spring 1, so that the positioning device drives the fixing parts on both sides to move, so that the fixing parts on both sides connect the two fixed brackets together through the connecting rod 5 on both sides, thereby improving the working efficiency and the stability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of highway maintenance equipment, and in particular to a safety buffer device for a highway maintenance operation area. Background Art

[0002] The working conditions of highways are very harsh. Not only do they have to bear repeated loads, but they are also subject to severe climatic effects. Maintenance and repair are complex, hard and simple but tedious tasks that are easily overlooked. However, with the development of society, the service requirements for roads are getting higher and higher. In order to keep the roads in good condition and operate economically, regular maintenance and repair of roads are required to prevent aging and wear and tear. This has become an important task.

[0003] Chinese patent document CN217839832U discloses a safety buffer device for a highway maintenance operation area, including a first protective frame and a second protective frame, wherein a plurality of airbags are installed inside the first protective frame and the second protective frame, and corresponding two sides of the bottom of the first protective frame and the second protective frame are fixedly connected with lifting brackets. The device uses the multiple airbags inside the two protective frames to perform double shock absorption and buffering on the vehicle and the equipment or workers in the buffer zone when hit by a vehicle. At the same time, the support frame between the two protective frame brackets is displaced by the force, thereby squeezing the trigger in the shock-absorbing frame, automatically triggering the alarm to sound, and promptly reminding the people around to pay attention to the accident to prevent the occurrence of a secondary accident. However, in actual use, the device is slow to install and different components need to be fixed together by screws, which reduces work efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a safety buffer device for a highway maintenance operation area, which can effectively solve the problem that the buffer device is installed slowly and affects the work efficiency.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A safety buffer device for a highway maintenance operation area comprises a plurality of fixed brackets, both sides of the outer surfaces of the plurality of fixed brackets are provided with fixed grooves, the sides of the plurality of fixed brackets close to each other are provided with guardrails slidably connected to the inner cavity surface of the fixed grooves, the lower parts of the fixed brackets located on both sides are provided with connecting rods 5 on the sides close to each other, and the lower parts of the plurality of fixed brackets located in the middle are provided with connecting rods 5 on both sides, the lower parts of the plurality of fixed brackets close to each other are provided with fixing devices slidably connected to the outer surface of the connecting rods 5, the upper parts of the inner cavities of the plurality of fixed brackets are provided with limiting devices, the lower parts of the inner cavities of the plurality of fixed brackets are provided with transmission devices, and the inner cavity surface of the connecting rods 5 is evenly provided with four connecting grooves;

[0007] A positioning groove is provided on the upper part of the fixing bracket, and two limit blocks are arranged on both sides of the lower surface of the inner cavity of the positioning groove. A limit groove 1 is provided on both sides of the middle part of the lower surface of the inner cavity of the positioning groove, and a limit groove 2 is provided on the side away from the two limit grooves 1.

[0008] Preferably, the fixing device includes a transmission ring 1 which is slidably connected to the outer surface of the connecting rod 5, a transmission groove is provided on one side of the outer surface of the transmission ring 1, a transmission ring 2 is provided in the middle part of the outer surface of the transmission ring 1, a transmission rod which is slidably connected to the inner cavity surface of the transmission groove is provided on the upper part of the outer surface of the transmission ring 2, and the upper end of the transmission rod extends to the outside of the transmission ring 2, arc-shaped limit plates are provided on both sides of the middle part of the outer surface of the transmission rod, a connecting plate is provided at the lower part of the inner cavity of the transmission rod, a spring 1 which is fixedly connected to the upper surface of the inner cavity of the transmission rod is provided at the upper end of the connecting plate, two limit rings which are adapted to the two arc-shaped limit plates are provided in the middle part of the inner cavity of the transmission ring 1, fixing parts are provided on both sides of the inner cavity of the transmission ring 1, and a positioning device is provided at one end of the two fixing parts which are close to each other.

[0009] Preferably, the fixing part includes a limit plate fixedly connected to the inner cavity surface of the transmission ring 1, the outer surface of the limit plate is evenly provided with four limit grooves 3, the lower part of the inner cavity of the four limit grooves 3 is provided with a fixing rod, the four fixing rods are provided with a fixing block on the side away from the transmission ring 2, the four fixing rods are provided with a connecting rod 2 on one end close to the transmission ring 2, and the outer surface of the four connecting rods 2 is slidably connected with a support ring on the side close to the transmission ring 2.

[0010] Preferably, the positioning device includes a connecting rod 1 fixedly connected to the lower end of the connecting plate, the middle part of the outer surface of the connecting rod 1 is rotatably connected to the inner cavity surface of the support ring, and crescent plates are arrayed on both sides of the outer surface of the connecting rod 1 for use with the connecting rod 2.

[0011] Preferably, the limiting device comprises two telescopic rods slidably connected to the inner cavity surface of the positioning groove, a connecting hole is opened on the side of the outer surfaces of the two telescopic rods close to each other, two springs 2 are arranged on both sides of the ends of the two telescopic rods close to each other, a limiting member is arranged in the middle of the ends of the two telescopic rods close to each other, a follower is arranged at the lower part of the two limiting members, a spur gear 1 fixedly connected to the inner cavity surface of the fixed bracket is arranged in the middle of the outer surface of the two followers, a spur gear 2 is meshedly connected with the side of the outer surfaces of the two spur gears 1 close to each other, a transmission roller rotatably connected to the inner wall of the fixed bracket is arranged at the lower end of the spur gear 2, a spur gear 3 rotatably connected to the inner cavity surface of the fixed bracket is arranged at the lower part of the two followers, a follower plate is arranged on the side of the two spur gears 3 away from each other.

[0012] Preferably, the limiting member includes an arc block, a support rod slidably connected to the outer surface of the follower is provided at the lower end of the arc block, a connecting rod three is provided on the upper outer surface of the support rod, a push rod is provided on the side of the inner cavity of the connecting rod three away from the arc block, a spring four fixedly connected to the end of the push rod close to the arc block is provided on the side of the inner cavity of the connecting rod three close to the arc block, and a limiting rod adapted for use with limiting groove one and limiting groove two is provided in the middle of the outer surface of the push rod.

[0013] Preferably, the follower includes a connecting rod four, a follower block one matched with the inner wall of the spur gear one is provided at the lower part of the outer surface of the connecting rod four, a follower block two slidably connected to the inner wall of the support rod is provided at the upper part of the outer surface of the connecting rod four, a lifting rod one is provided at the lower end of the connecting rod four, a lifting rod two is provided at the lower part of the outer surface of the lifting rod one, a spring five fixedly connected to a lower end of the lifting rod is provided on the lower surface of the inner cavity of the lifting rod two, a rack meshingly connected to the spur gear three is provided on the side of the outer surface of the lifting rod two close to the driven plate, and a spring six fixedly connected to the lower surface of the inner cavity of the fixed bracket is provided at the lower end of the lifting rod two.

[0014] Preferably, the transmission device includes two positioning blocks, two elastic strips of chains fixedly connected to the inner cavity surface of the fixed bracket are arranged on both sides of the lower ends of the two positioning blocks, and a limiting rope fixedly connected to the lower surface of the inner cavity of the fixed bracket is arranged in the middle part of the lower end of the two positioning blocks. A transmission ring three is arranged on the side of the outer surface of the two positioning blocks close to the transmission roller, and a spiral rod rotatably connected to the upper surface of the inner cavity of the fixed bracket is arranged in the middle part of the inner cavity of the two transmission rings three. A transmission block one is arranged at the lower part of the outer surface of the two spiral rods, and a transmission member matched with the transmission block one is arranged at the lower part of the outer surface of the two spiral rods. A spur gear four rotatably connected to the lower surface of the inner cavity of the fixed bracket is arranged below the two transmission members, and a transmission block two matched with the transmission member is arranged at the upper end of the two spur gears four, and a spur gear five fixedly connected to the lower end of the transmission roller is meshed and connected on the side of the outer surfaces of the two spur gears four close to each other.

[0015] Preferably, the transmission member includes a connecting ring rotatably connected to the outer surface of the positioning block, positioning rings are provided on both upper and lower sides of the inner cavity surface of the connecting ring, and a fixing ring slidably connected to the inner cavity surface of the connecting ring is provided below the two positioning rings, and the upper ends of the two fixing rings are arrayed with springs three respectively fixedly connected to the lower ends of the two positioning rings, and the inner cavities of the two fixing rings are arrayed with transmission blocks three, the transmission block three located on the upper part is adapted for use with the transmission block one, and the transmission block three located on the lower side is adapted for use with the transmission block two.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, by providing a fixing device, when the buffer device needs to be installed, the connecting rods 5 in the two fixing brackets can be placed in the inner cavity of the fixing device, and then the transmission ring 2 is rotated, so that the transmission ring 2 drives the positioning device to move through the transmission rod and the spring 1, and the positioning device drives the fixing parts on both sides to move, and then the fixing parts on both sides fix the connecting rods 5 on both sides, so that the two fixing brackets are connected together, thereby improving the working efficiency and the stability of the device.

[0018] In the present invention, a limiting device and a transmission device are provided during the passage. When the guardrail is placed in the inner cavity of the fixing groove, the guardrail causes the positioning block to move downward by its own gravity, so that the transmission ring three drives the spiral rod to rotate, and then the spur gear four drives the spur gear five to rotate through the cooperation of the transmission member, and then the spur gear five drives the spur gear two to rotate through the transmission roller, so that the spur gear two drives the limiting member to move through the cooperation of the follower and the spur gear one, and the telescopic rod is pushed outward and extended, so that the telescopic rod limits the guardrail, thereby fixing the guardrail and improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the assembly of the fixing device of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the fixing device of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the fixing member of the present invention;

[0024] Figure 6 It is a schematic diagram of the assembly of the fixing member of the present invention;

[0025] Figure 7 It is a schematic diagram of the assembly of the limiting device of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the limiting device of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of the follower of the present invention;

[0028] Fig.10 It is a schematic diagram of the positioning groove structure of the present invention;

[0029] Fig.11 It is a schematic diagram of the transmission structure of the present invention;

[0030] Fig.12 For the present invention Fig.11 A partial enlarged view of point A in the middle.

[0031] In the figure: 1, fixed bracket; 11, fixed groove; 12, connecting rod five; 121, connecting groove; 13, positioning groove; 131, limit block; 132, limit groove one; 133, limit groove two; 2, guardrail; 3, fixing device; 31, transmission ring one; 311, transmission groove; 32, transmission ring two; 321, transmission rod; 322, arc limit plate; 323, connecting plate; 324, spring one; 3 3. Limiting ring; 34. Positioning device; 341. Connecting rod 1; 342. Crescent plate; 35. Fixing piece; 351. Limiting plate; 3511. Limiting groove 3; 352. Fixing rod; 3521. Fixing block; 353. Connecting rod 2; 354. Support ring; 4. Limiting device; 40. Transmission roller; 41. Telescopic rod; 411. Connecting hole; 42. Spring 2; 43. Limiting piece; 431. Arc block; 432, support rod; 433, connecting rod three; 4331, spring four; 434, push rod; 435, limit rod; 44, spur gear one; 45, spur gear two; 46, follower; 461, connecting rod four; 462, follower block one; 463, follower block two; 464, lifting rod one; 465, lifting rod two; 4651, spring five; 4652, rack; 466, spring six; 47, Driven plate; 48, spur gear three; 5, transmission device; 51, positioning block; 511, limiting rope; 512, transmission ring three; 52, elastic strip; 53, screw rod; 531, transmission block one; 54, transmission member; 541, connecting ring; 542, positioning ring; 543, fixing ring; 544, spring three; 545, transmission block three; 55, spur gear four; 551, transmission block two; 56, spur gear five. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Example

[0033] like Figure 1 - Figure 5As shown, the present embodiment discloses a safety buffer device for a highway maintenance operation area, comprising a plurality of fixed brackets 1, wherein a connecting rod 5 12 is arranged on each side of the lower parts of the fixed brackets 1 located on both sides and close to each other, and a connecting rod 5 12 is arranged on each side of the lower parts of the plurality of fixed brackets 1 located in the middle, and a fixing device 3 slidably connected to the outer surface of the connecting rod 5 12 is arranged on each side of the lower parts of the plurality of fixed brackets 1 close to each other, wherein the fixing device 3 is intended to enable the two fixed brackets 1 to be connected together and, at the same time, facilitate the staff to fix the two fixed brackets 1 together and improve the work efficiency, and the inner cavity surface of the connecting rod 5 12 is evenly provided with four connecting grooves 121.

[0034] In order to connect the two fixing brackets 1 together, it is convenient for the staff to fix the two fixing brackets 1 together and improve the work efficiency. Figure 3 - Figure 4 As shown, the fixing device 3 includes a transmission ring 1 31 which is slidably connected to the outer surface of the connecting rod 5 12, a transmission groove 311 is provided on one side of the outer surface of the transmission ring 1 31, a transmission ring 2 32 is provided in the middle of the outer surface of the transmission ring 1 31, a transmission rod 321 which is slidably connected to the inner cavity surface of the transmission groove 311 is provided on the upper part of the outer surface of the transmission ring 2 32, and the upper end of the transmission rod 321 extends to the outside of the transmission ring 2 32, arc-shaped limit plates 322 are provided on both sides of the middle part of the outer surface of the transmission rod 321, a connecting plate 323 is provided at the lower part of the inner cavity of the transmission rod 321, and a spring 1 324 which is fixedly connected to the upper surface of the inner cavity of the transmission rod 321 is provided on the upper end of the connecting plate 323, two limit rings 33 which are adapted to be used with the two arc-shaped limit plates 322 are provided in the middle part of the inner cavity of the transmission ring 1 31, fixing parts 35 are provided on both sides of the inner cavity of the transmission ring 1 31, and a positioning device 34 is provided at one end of the two fixing parts 35 which are close to each other.

[0035] Specifically, when it is necessary to install the buffer device, the connecting rod 5 12 in the two fixing brackets 1 can be placed into the inner cavity of the fixing device 3, and then the transmission ring 2 32 is rotated, so that the transmission ring 2 32 drives the transmission rod 321 to slide in the inner cavity of the transmission groove 311, and then the transmission rod 321 drives the arc limit plate 322 to move. When the arc limit plate 322 moves, the inclined surface of the limiting teeth on the outer surface thereof will contact the surface of the limiting teeth on the inner cavity surface of the limiting ring 33. When the arc limit plate 322 moves, the limiting ring 33 will cause the arc limit plate 322 to move away from the limiting ring 33, so that the spring 1 324 is compressed. At the same time, under the action of the spring 1 324, the limiting teeth on the outer surface of the arc limit plate 322 can always contact the limiting teeth on the inner cavity surface of the limiting ring 33. At this time, the limiting ring 33 will not limit the movement of the arc limit plate 322.

[0036] Furthermore, when the transmission rod 321 moves with the transmission ring 2 32, the transmission rod 321 drives the positioning device 34 to move through the connecting plate 323, and then the positioning device 34 drives the fixing member 35 to move. When the transmission ring 2 32 rotates a certain angle, the fixing members 35 on both sides fix the connecting rods 5 12 on both sides, so that the two fixed brackets 1 are connected together. At the same time, due to the planar contact between the outer surface of the arc-shaped limiting plate 322 and the limiting teeth on the inner cavity surface of the limiting ring 33, the limiting ring 33 limits the arc-shaped limiting plate 322 to rotate in the opposite direction, so that the connecting rods 5 12 on both sides will not be out of contact with the fixing members 35, and the fixed brackets 1 on both sides can be fixed.

[0037] Furthermore, when it is necessary to release the fixed state of the two fixed brackets 1, the transmission rod 321 can be pressed to compress the spring 1 324, and then the transmission rod 321 drives the arc limit plate 322 to move toward the side close to the positioning device 34, so that the limiting teeth on the outer surface of the arc limit plate 322 are out of contact with the limiting teeth on the inner cavity surface of the limiting ring 33, so that the limiting ring 33 no longer limits the movement of the transmission rod 321 through the arc limit plate 322. At this time, the transmission ring 2 32 can be rotated back to the away position, so that the spring 1 324 drives the positioning device 34 to move, so that the fixing parts 35 on both sides no longer fix the connecting rods 5 12 on both sides. At this time, the two connecting rods 5 12 can be pulled out from the inner cavity of the fixing device 3.

[0038] In order to connect the two connecting rods 512 together through the fixing member 35, as shown in FIG. Figure 4 - Figure 5 As shown, the fixing member 35 includes a limiting plate 351 fixedly connected to the inner cavity surface of the transmission ring 1 31, four limiting grooves 3511 are evenly opened on the outer surface of the limiting plate 351, and the lower part of the inner cavity of the four limiting grooves 3511 is provided with a fixing rod 352, and a fixing block 3521 is provided on the side of the four fixing rods 352 away from the transmission ring 2 32, and a connecting rod 2 353 is provided on the end of the four fixing rods 352 close to the transmission ring 2 32, and a support ring 354 is slidably connected to the outer surface of the four connecting rods 2 353 close to the transmission ring 2 32.

[0039] In order to drive the fixing member 35 to move, the fixing members 35 on both sides fix the connecting rod 5 12, thereby connecting the two fixing brackets 1 together. Figure 5 As shown, the positioning device 34 includes a connecting rod 341 fixedly connected to the lower end of the connecting plate 323, the middle part of the outer surface of the connecting rod 341 is rotatably connected to the inner cavity surface of the support ring 354, and crescent plates 342 adapted for use with the connecting rod 2 353 are arrayed on both sides of the outer surface of the connecting rod 341.

[0040] Specifically, when the spring 1 324 drives the fixing members 35 on both sides to fix the connecting rods 5 12 on both sides through the positioning device 34, the spring 1 324 first drives the connecting rod 1 341 to rotate, so that the crescent plates 342 on both sides of the outer surface of the connecting rod 1 341 move. Since the contact surface between the crescent plate 342 and the connecting rod 2 353 is an arc shape, when the crescent plate 342 moves, the connecting rod 2 353 will move toward the side close to the transmission ring 1 31, and then the connecting rod 2 353 drives the fixing rod 352 to move toward the side close to the transmission ring 1 31. When the positioning device 34 is driven by the spring 1 324 to rotate a certain angle, the outer surface of the fixing block 3521 contacts the inner cavity surface of the connecting groove 121. At this time, the connecting rods 5 12 on both sides can be fixed, thereby fixing the two fixing brackets 1.

[0041] Furthermore, the support ring 354 is used to limit the position of the second connecting rod 353 so that the crescent plate 342 can only drive the second connecting rod 353 to move toward the side close to the transmission ring 1 31.

[0042] To sum up, the specific implementation method is as follows: when the buffer device needs to be installed, the connecting rod 5 12 in the two fixed brackets 1 can be placed in the inner cavity of the fixing device 3, and then the transmission ring 2 32 is rotated, so that the transmission ring 2 32 drives the positioning device 34 to move through the transmission rod 321 and the spring 1 324, and the positioning device 34 drives the fixing parts 35 on both sides to move, and then the fixing parts 35 on both sides fix the connecting rod 5 12 on both sides, so that the two fixed brackets 1 are connected together. Example

[0043] This embodiment further improves the fixing bracket 1 on the basis of the first embodiment, such as Figure 7 - Fig.12 As shown, fixing grooves 11 are provided on both sides of the outer surfaces of the multiple fixing brackets 1, and a guardrail 2 slidably connected to the inner cavity surface of the fixing groove 11 is provided on the side where the multiple fixing brackets 1 are close to each other. A limiting device 4 is provided on the upper part of the inner cavity of the multiple fixing brackets 1. The limiting device 4 is used to fix the guardrail 2. A transmission device 5 is provided on the lower part of the inner cavity of the multiple fixing brackets 1. The transmission device 5 is used to drive the limiting device 4 to move through the transmission device 5 under the action of the self-gravity of the guardrail 2.

[0044] Furthermore, a positioning groove 13 is provided at the upper part of the fixed bracket 1, and two limit blocks 131 are arranged on both sides of the lower surface of the inner cavity of the positioning groove 13, and a limit groove 132 is provided on both sides of the middle part of the lower surface of the inner cavity of the positioning groove 13, and a limit groove 2 133 is provided on the side away from the two limit grooves 132.

[0045] In order to fix the guardrail 2, Figure 7 - Figure 8As shown, the limiting device 4 includes two telescopic rods 41 slidably connected to the inner cavity surface of the positioning groove 13, two springs 2 42 are arranged on both sides of the ends of the two telescopic rods 41 close to each other, and a limiting member 43 is arranged in the middle of the ends of the two telescopic rods 41 close to each other. A follower 46 is arranged at the lower part of the two limiting members 43, and a spur gear 1 44 fixedly connected to the inner cavity surface of the fixed bracket 1 is arranged in the middle of the outer surface of the two followers 46, and a spur gear 1 44 is arranged on the side where the outer surfaces of the two spur gears 1 44 are close to each other, and a spur gear 2 45 is meshed and connected, and a transmission roller 40 rotatably connected to the inner wall of the fixed bracket 1 is arranged at the lower end of the spur gear 2 45, and a spur gear 3 48 rotatably connected to the inner cavity surface of the fixed bracket 1 is arranged at the lower part of the two followers 46, and a follower plate 47 is arranged on the side where the two spur gears 3 48 are away from each other.

[0046] Specifically, when the guardrail 2 is placed in the inner cavity of the fixing groove 11, the fixing groove 11 can drive the driven plate 47 to rotate downward, and the driven plate 47 drives the follower 46 on the side close to the inner cavity of the fixing groove 11 to move upward through the spur gear three 48, so that the follower 46 can transfer the kinetic energy transmitted by the spur gear one 44 to the limiter 43, so that the limiter 43 located close to the guardrail 2 placed in the inner cavity of the fixing groove 11 drives the telescopic rod 41 corresponding to the limiter 43 to move, so that the telescopic rod 41 is extended, and at the same time, the spring two 42 is stretched, so that the lower end of the telescopic rod 41 contacts the upper end of the guardrail 2, so that the telescopic rod 41 fixes the guardrail 2.

[0047] Furthermore, when the guardrail 2 needs to be taken out of the inner cavity of the fixing groove 11 , the telescopic rod 41 can be pressed to make the telescopic rod 41 push the limiting member 43 back to the away position. At this time, the guardrail 2 can be taken out of the inner cavity of the fixing groove 11 .

[0048] Furthermore, when the limiting member 43 does not push the telescopic rod 41 to move, the spring 2 42 will pull the telescopic rods 41 on both sides to move toward each other. At the same time, the two limiting blocks 131 on both sides will limit the movement of the telescopic rod 41, so that the ends of the telescopic rods 41 on both sides that are away from each other are flush with the sides of the inner cavity surfaces of the fixing grooves 11 on both sides of the fixing bracket 1 that are close to each other.

[0049] In order to promote the telescopic rod 41 to move, Fig. 9As shown, the limiting member 43 includes an arc block 431, a support rod 432 slidingly connected to the outer surface of the follower 46 is provided at the lower end of the arc block 431, a connecting rod three 433 is provided on the upper outer surface of the support rod 432, a push rod 434 is provided on the side of the inner cavity of the connecting rod three 433 away from the arc block 431, a spring four 4331 fixedly connected to one end of the push rod 434 close to the arc block 431 is provided on the side of the inner cavity of the connecting rod three 433 close to the arc block 431, and a limiting rod 435 adapted to be used with the limiting groove one 132 and the limiting groove two 133 is provided in the middle of the outer surface of the push rod 434.

[0050] In order to enable the kinetic energy transmitted by the transmission device 5 to drive the limiter 43 to move, and at the same time, to limit the movement of the limiter 43, as Fig. 9 As shown, the follower 46 includes a connecting rod 461, a follower block 462 adapted for use with the inner wall of the spur gear 44 is provided at the lower portion of the outer surface of the connecting rod 461, a follower block 463 slidably connected to the inner wall of the support rod 432 is provided at the upper portion of the outer surface of the connecting rod 461, a lifting rod 464 is provided at the lower end of the connecting rod 461, a lifting rod 465 is provided at the lower portion of the outer surface of the lifting rod 464, a spring 4651 fixedly connected to the lower end of the lifting rod 464 is provided on the lower surface of the inner cavity of the lifting rod 465, a rack 4652 meshingly connected to the spur gear 3 48 is provided on the side of the outer surface of the lifting rod 465 close to the driven plate 47, and a spring 6 466 fixedly connected to the lower surface of the inner cavity of the fixed bracket 1 is provided at the lower end of the lifting rod 465.

[0051] Specifically, when the transmission device 5 drives the spur gear 2 45 to rotate through the transmission roller 40, at this time, the guardrail 2 is placed in the inner cavity of the fixed groove 11, and the driven plate 47 is pushed downward, so that the driven plate 47 drives the lifting rod 2 465 to move upward through the cooperation of the spur gear 3 48 and the rack 4652, and the lifting rod 2 465 pushes the lifting rod 1 464 to move upward through the spring 5 4651, and then the driven block 1 462 enters the inner wall of the spur gear 1 44, so that the spur gear 1 44 can drive the connecting rod 4 461 to rotate through the driven block 1 462, and then the connecting rod 4 461 drives the support rod 432 to move through the driven block 2 463.

[0052] Furthermore, when the support rod 432 moves, it will drive the arc block 431 and the connecting rod three 433 to rotate, so that the arc block 431 pushes the telescopic rod 41 outward. At the same time, the limit rod 435 will also slide in the inner cavity of the limit groove 132. When the arc block 431 and the connecting rod three 433 rotate a certain angle, so that the push rod 434 is aligned with the connecting hole 411, at this time, the limit rod 435 also rotates to the intersection of the limit groove 132 and the limit groove 2 133, so that the limit rod 435 no longer restricts the movement of the push rod 434, so that the push rod 434 is extended under the push of the spring four 4331, and the telescopic rod 41 continues to extend through the connecting hole 411, so that the telescopic rod 41 can limit the guardrail 2.

[0053] Furthermore, spring five 4651 is used to compress spring five 4651 when the driven block 1 462 is not aligned with the inner wall of the spur gear 1 44. When the spur gear 1 44 rotates a certain angle and the driven block 1 462 is aligned with the inner wall of the spur gear 1 44, the spring five 4651 pushes the driven block 1 462 into the inner wall of the spur gear 1 44.

[0054] Furthermore, when the guardrail 2 needs to be taken out and the telescopic rod 41 is pressed, the telescopic rod 41 will shrink inward, thereby causing the limit rod 435 to compress the spring four 4331 inward. When the telescopic rod 41 returns to the away state, the telescopic rod 41 will push the push rod 434 back into the inner cavity of the connecting rod three 433. At the same time, the limit rod 435 returns to the intersection of the limit groove 1 132 and the limit groove 2 133, and continues to apply force to the telescopic rod 41, so that the telescopic rod 41 can push the arc block 431 to rotate to its original position. At this time, the limit rod 435 will first drive the push rod 434 to continue to move toward the side close to the support rod 432, so that the connecting hole 411 will not limit the rotation of the push rod 434.

[0055] In order to drive the limiting device 4 to move through the transmission device 5 under the action of the self-gravity of the guardrail 2, and at the same time, avoid the positioning blocks 51 on both sides from moving at the same time, such as Fig.11As shown, the transmission device 5 includes two positioning blocks 51, and two elastic strips 52 fixedly connected to the inner cavity surface of the fixed bracket 1 are arranged on both sides of the lower ends of the two positioning blocks 51, and a limiting rope 511 fixedly connected to the lower surface of the inner cavity of the fixed bracket 1 is arranged in the middle of the lower end of the two positioning blocks 51. A transmission ring 3 512 is arranged on the side of the outer surface of the two positioning blocks 51 close to the transmission roller 40, and a spiral rod 53 rotatably connected to the upper surface of the inner cavity of the fixed bracket 1 is arranged in the middle of the inner cavity of the two transmission rings 3 512. A transmission block 531 is provided at the lower part of the outer surface of the rotating rod 53, and a transmission member 54 adapted for use with the transmission block 531 is provided at the lower part of the outer surface of the two spiral rods 53. A spur gear four 55 rotatably connected to the lower surface of the inner cavity of the fixed bracket 1 is provided below the two transmission members 54. A transmission block 2 551 adapted for use with the transmission member 54 is provided at the upper end of the two spur gears four 55. The outer surfaces of the two spur gears four 55 are meshedly connected on one side close to each other with a spur gear five 56 fixedly connected to the lower end of the transmission roller 40.

[0056] Specifically, when the guardrail 2 is placed in the inner cavity of the fixing groove 11, the guardrail 2 drives the positioning block 51 in contact with it to move downward under the action of its own gravity. At this time, the elastic strip 52 under the positioning block 51 will be bent to produce elasticity. When the positioning block 51 moves downward, the screw rod 53 is driven to rotate through the transmission ring three 512. At the same time, when the positioning block 51 moves downward, it will drive the transmission member 54 connected to it to move downward, so that the force of the rotation of the screw rod 53 is transmitted to the spur gear four 55, so that the spur gear five 56 meshing with the spur gear four 55 rotates, and then drives the limit device 4 to operate through the transmission roller 40.

[0057] Furthermore, when the spur gear five 56 rotates, it will also drive the spur gear four 55 on the other side to rotate, but the positioning block 51 on the other side is not forced to move downward, so the transmission member 54 on the other side transfers the kinetic energy transmitted by the spur gear four 55 to the screw rod 53 on the other side.

[0058] In order to avoid the positioning blocks 51 on both sides moving at the same time, Fig.12 As shown, the transmission member 54 includes a connecting ring 541 rotatably connected to the outer surface of the positioning block 51, positioning rings 542 are arranged on the upper and lower sides of the inner cavity surface of the connecting ring 541, and fixing rings 543 slidingly connected to the inner cavity surface of the connecting ring 541 are arranged below the two positioning rings 542, and the upper ends of the two fixing rings 543 are arrayed with spring three 544 respectively fixedly connected to the lower ends of the two positioning rings 542, and the inner cavities of the two fixing rings 543 are arrayed with transmission blocks three 545, the transmission block three 545 located on the upper part is adapted for use with the transmission block one 531, and the transmission block three 545 located on the lower side is adapted for use with the transmission block two 551.

[0059] Specifically, when the positioning block 51 moves downward, the connecting ring 541 moves downward, and the connecting ring 541 drives the two fixing rings 543 to move downward through the two positioning rings 542 and the spring three 544, so that the transmission blocks three 545 on the upper and lower sides are respectively in contact with the transmission blocks one 531 and the transmission blocks two 551, so that the force of the rotation of the screw rod 53 is transmitted to the spur gear four 55, and then the spur gear four 55 drives the spur gear five 56 to rotate. When the positioning block 51 continues to move downward for a certain distance under the action of the gravity of the guardrail 2, the limiting device 4 limits the guardrail 2, and the transmission blocks three 545 on both sides will be out of contact with the transmission blocks one 531 and the transmission blocks two 551, so that when the guardrail 2 needs to be taken out to push the telescopic rod 41 to rotate, the force transmitted through the transmission roller 40 will not be transmitted to the screw rod 53, thereby driving the positioning block 51 to move.

[0060] Furthermore, when the guardrail 2 no longer applies force to the positioning block 51 , the elastic strip 52 pushes the positioning block 51 upward, so that the positioning block 51 returns to its original position, and then limits the distance that the elastic strip 52 pushes the positioning block 51 upward through the limiting rope 511 .

[0061] Furthermore, when the transmission ring 3 512 moves downward, the spiral rod 53 is rotated through the structure of its inner cavity, which is the prior art.

[0062] To sum up, the specific implementation method is as follows: when the guardrail 2 is placed in the inner cavity of the fixing groove 11, the guardrail 2 causes the positioning block 51 to move downward by its own gravity, so that the transmission ring three 512 drives the screw rod 53 to rotate, and then the spur gear four 55 drives the spur gear five 56 to rotate through the cooperation of the transmission member 54, and then the spur gear five 56 drives the spur gear two 45 to rotate through the transmission roller 40, so that the spur gear two 45 drives the limit member 43 to move through the cooperation of the follower 46 and the spur gear one 44, and the telescopic rod 41 is pushed outward and extended, so that the telescopic rod 41 restricts the guardrail 2, thereby fixing the guardrail 2.

[0063] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A safety buffer device for a highway maintenance operation area, comprising a plurality of fixed brackets (1), characterized in that: Both sides of the outer surfaces of the plurality of fixed brackets (1) are provided with fixing grooves (11), and the sides of the plurality of fixed brackets (1) close to each other are provided with guardrails (2) slidably connected to the inner surface of the fixing grooves (11), and the lower parts of the fixed brackets (1) located on both sides are provided with connecting rods (12) on the sides close to each other, and the lower parts of the plurality of fixed brackets (1) located in the middle are provided with connecting rods (12) on both sides, and the lower parts of the plurality of fixed brackets (1) close to each other are provided with fixing devices (3) slidably connected to the outer surface of the connecting rods (12), and the upper parts of the inner cavities of the plurality of fixed brackets (1) are provided with limiting devices (4), and the lower parts of the plurality of fixed brackets (1) are provided with transmission devices (5), and the inner surface of the connecting rods (12) is evenly provided with four connecting grooves (121); A positioning groove (13) is provided on the upper part of the fixing bracket (1), two limiting blocks (131) are provided on both sides of the lower surface of the inner cavity of the positioning groove (13), limiting grooves (132) are provided on both sides of the middle part of the lower surface of the inner cavity of the positioning groove (13), and limiting grooves (133) are provided on the sides away from each other of the two limiting grooves (132); The fixing device (3) comprises a transmission ring 1 (31) slidably connected to the outer surface of the connecting rod 5 (12); a transmission groove (311) is provided on one side of the outer surface of the transmission ring 1 (31); a transmission ring 2 (32) is provided in the middle of the outer surface of the transmission ring 1 (31); a transmission rod (321) slidably connected to the inner surface of the transmission groove (311) is provided on the upper part of the outer surface of the transmission ring 2 (32); the upper end of the transmission rod (321) extends to the outside of the transmission ring 2 (32); and both sides of the middle of the outer surface of the transmission rod (321) are provided An arc-shaped limit plate (322) is provided, a connecting plate (323) is provided at the lower part of the inner cavity of the transmission rod (321), a spring (324) fixedly connected to the upper surface of the inner cavity of the transmission rod (321) is provided at the upper end of the connecting plate (323), two limit rings (33) adapted for use with the two arc-shaped limit plates (322) are provided at the middle part of the inner cavity of the transmission ring (31), fixing members (35) are provided on both sides of the inner cavity of the transmission ring (31), and a positioning device (34) is provided at one end of the two fixing members (35) close to each other; The fixing member (35) comprises a limiting plate (351) fixedly connected to the inner surface of the transmission ring 1 (31); the outer surface of the limiting plate (351) is evenly provided with four limiting grooves 3 (3511); the lower part of the inner cavity of the four limiting grooves 3 (3511) is provided with a fixing rod (352); a fixing block (3521) is provided on the side of the four fixing rods (352) away from the transmission ring 2 (32); a connecting rod 2 (353) is provided on one end of the four fixing rods (352) close to the transmission ring 2 (32); and a support ring (354) is slidably connected to the outer surface of the four connecting rods 2 (353) close to the transmission ring 2 (32).

2. A safety buffer device for highway maintenance work area according to claim 1, characterized in that: The positioning device (34) comprises a first connecting rod (341) fixedly connected to the lower end of the connecting plate (323); the middle portion of the outer surface of the first connecting rod (341) is rotatably connected to the inner surface of the support ring (354); and crescent plates (342) adapted for use with the second connecting rod (353) are arrayed on both sides of the outer surface of the first connecting rod (341).

3. A safety buffer device for highway maintenance work area according to claim 1, characterized in that: The limiting device (4) comprises two telescopic rods (41) slidably connected to the inner surface of the positioning groove (13); a connecting hole (411) is provided on the side of the outer surface of the two telescopic rods (41) close to each other; two springs (42) are provided on both sides of the ends of the two telescopic rods (41) close to each other; a limiting member (43) is provided in the middle of the ends of the two telescopic rods (41) close to each other; a follower (46) is provided at the lower part of the two limiting members (43); and the middle of the outer surface of the two followers (46) is provided. Both are provided with a spur gear one (44) fixedly connected to the inner surface of the fixed bracket (1); the outer surfaces of the two spur gears one (44) are meshingly connected to a spur gear two (45) on the side close to each other; the lower end of the spur gear two (45) is provided with a transmission roller (40) rotatably connected to the inner wall of the fixed bracket (1); the lower parts of the two driven members (46) are both provided with a spur gear three (48) rotatably connected to the inner surface of the fixed bracket (1); and the two spur gears three (48) are both provided with a driven plate (47) on the side away from each other.

4. A safety buffer device for highway maintenance work area according to claim 3, characterized in that: The limiting member (43) comprises an arc block (431), the lower end of the arc block (431) is provided with a support rod (432) slidably connected to the outer surface of the follower (46), the upper portion of the outer surface of the support rod (432) is provided with a connecting rod three (433), the inner cavity of the connecting rod three (433) is provided with a push rod (434) on the side away from the arc block (431), the inner cavity of the connecting rod three (433) is provided with a spring four (4331) fixedly connected to one end of the push rod (434) close to the arc block (431) on the side close to the arc block (431), and the middle portion of the outer surface of the push rod (434) is provided with a limiting rod (435) adapted for use with the limiting groove one (132) and the limiting groove two (133).

5. A safety buffer device for highway maintenance work area according to claim 4, characterized in that: The follower (46) comprises a connecting rod four (461), the lower part of the outer surface of the connecting rod four (461) is provided with a follower block one (462) adapted for use with the inner wall of the spur gear one (44), the upper part of the outer surface of the connecting rod four (461) is provided with a follower block two (463) slidably connected to the inner wall of the support rod (432), the lower end of the connecting rod four (461) is provided with a lifting rod one (464), the lower part of the outer surface of the lifting rod one (464) is provided with a lifting rod two (465), the lower surface of the inner cavity of the lifting rod two (465) is provided with a spring five (4651) fixedly connected to the lower end of the lifting rod one (464), the outer surface of the lifting rod two (465) is provided with a rack (4652) meshingly connected to the spur gear three (48) on the side close to the driven plate (47), and the lower end of the lifting rod two (465) is provided with a spring six (466) fixedly connected to the lower surface of the inner cavity of the fixed bracket (1).

6. A safety buffer device for highway maintenance work area according to claim 5, characterized in that: The transmission device (5) comprises two positioning blocks (51), two elastic strips (52) fixedly connected to the inner cavity surface of the fixed bracket (1) are arranged on both sides of the lower ends of the two positioning blocks (51), and a limiting rope (511) fixedly connected to the lower surface of the inner cavity of the fixed bracket (1) is arranged in the middle of the lower ends of the two positioning blocks (51), and a transmission ring (512) is arranged on the side of the outer surface of the two positioning blocks (51) close to the transmission roller (40), and a spiral rod (53) rotatably connected to the upper surface of the inner cavity of the fixed bracket (1) is arranged in the middle of the inner cavity of the two transmission rings (512). A transmission block 1 (531) is provided at the lower part of the outer surface of the screw rod (53); a transmission member (54) adapted for use with the transmission block 1 (531) is provided at the lower part of the outer surface of the two screw rods (53); a spur gear 4 (55) rotatably connected to the lower surface of the inner cavity of the fixed bracket (1) is provided below the two transmission members (54); a transmission block 2 (551) adapted for use with the transmission member (54) is provided at the upper end of the two spur gears 4 (55); and a spur gear 5 (56) fixedly connected to the lower end of the transmission roller (40) is meshedly connected on one side of the outer surfaces of the two spur gears 4 (55) that are close to each other.

7. A safety buffer device for highway maintenance work area according to claim 6, characterized in that: The transmission member (54) comprises a connecting ring (541) rotatably connected to the outer surface of the positioning block (51); positioning rings (542) are arranged on both upper and lower sides of the inner cavity surface of the connecting ring (541); a fixing ring (543) slidably connected to the inner cavity surface of the connecting ring (541) is arranged below the two positioning rings (542); spring three (544) is arranged at the upper ends of the two fixing rings (543) and is respectively fixedly connected to the lower ends of the two positioning rings (542); transmission blocks three (545) are arranged in the inner cavities of the two fixing rings (543); the transmission block three (545) located at the upper part is adapted for use with the transmission block one (531); and the transmission block three (545) located at the lower side is adapted for use with the transmission block two (551).

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