Road construction intersection protection device

Abstract

The application discloses a kind of road construction road crossing protection equipment, it is related to road construction protection field, including mounting plate, the both sides of the mounting plate are equipped with two groups of support legs, the top of the mounting plate is equipped with two groups of upper folding plate, the below of the mounting plate is equipped with two groups of lower folding plate, the outer wall of the mounting plate is equipped with folding mechanism;Folding mechanism includes a rotating seat, the both ends of the mounting plate side wall below are equipped with two groups of rotating seat No.1.The application is set by folding mechanism, using the setting of folding mechanism No.1 pivot, No.2 pivot and No.3 pivot, so that upper folding plate, lower folding plate and support leg can be folded to the direction of mounting plate, when transporting, the volume of the device can be effectively reduced, convenient transportation, and can be quickly opened when installing, convenient installation, reduces the construction time of early construction, thereby reducing the time of road closure, beneficial to the management of road traffic.

Description

Technical Field

[0001] This invention relates to the field of road construction protection, specifically to a road construction crossing protection device. Background Technology

[0002] When a section of the road is damaged, road maintenance workers will repair the damaged area and place a barrier to block vehicles from passing through the repaired area until the filler material used for the repair has solidified, and then remove the barrier.

[0003] Most of the existing fences are made of iron plates and are about 2 meters high, so that pedestrians cannot see the inside. The purpose is not only to prevent stone debris from flying and injuring passers-by during construction, but also to prevent pedestrians from turning their heads to look out of curiosity and causing accidents.

[0004] However, taller hoardings are bulky and inconvenient to install and transport, which increases the construction time in the early stages of construction, thereby increasing the time of road closures and hindering road traffic management. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a road construction crossing protection device to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a road construction crossing protection device, comprising an installation plate, two sets of support legs on both sides of the installation plate, two sets of upper folding plates above the installation plate, two sets of lower folding plates below the installation plate, and a folding mechanism on the outer wall of the installation plate;

[0007] The folding mechanism includes a first rotating seat. Two sets of first rotating seats are provided on the lower side walls of both ends of the mounting plate. The two sets of first rotating seats are rotatably connected to a first rotating shaft at their close ends. Two sets of second rotating seats are provided on the upper side walls of both ends of the mounting plate. The two sets of second rotating seats are rotatably connected to a second rotating shaft at their close ends. Two sets of third rotating seats are provided at the bottom of the mounting plate. The two sets of third rotating seats are rotatably connected to a third rotating shaft at their close ends. The inner walls of the two sets of support legs are fixedly sleeved on the outer walls of the first rotating shaft. The inner walls of the two sets of upper folding plates are respectively fixedly sleeved on the outer walls of the second rotating shaft. The inner walls of the two sets of lower folding plates are respectively fixedly sleeved on the outer walls of the third rotating shaft.

[0008] As a preferred technical solution of the road construction crossing protection equipment of the present invention, the outer walls of the mounting plate and the two sets of upper folding plates are equipped with warning display screens.

[0009] As a preferred technical solution of the road construction crossing protection equipment of the present invention, the two ends of the first rotating shaft are respectively connected to two sets of first rotating seats. Both ends of the first rotating shaft are provided with a transmission mechanism, which includes a first gear. Both ends of the two sets of first rotating shafts connected to the two sets of first rotating seats are provided with first gears, and the two sets of first gears mesh with each other. The two ends of the two sets of second rotating shafts are respectively connected to two sets of second rotating seats. Both ends of the two sets of second rotating shafts connected to the second transmission seat are provided with third gears, and the two sets of third gears mesh with each other.

[0010] As a preferred technical solution of the road construction crossing protection equipment of the present invention, the outer walls of both ends of the mounting plate are provided with two sets of No. 4 rotating seats. The outer walls of the two sets of No. 4 rotating seats are rotatably connected to No. 2 gears, and the two sets of No. 2 gears mesh with each other. The outer walls of the two sets of No. 1 gears are provided with a No. 1 large transmission disc, the outer walls of the two sets of No. 2 gears are provided with a No. 1 small transmission disc, the outer walls of the two sets of No. 1 large transmission discs are provided with a No. 1 transmission belt, and the inner walls of the other ends of the two sets of No. 1 transmission belts are respectively connected to the outer walls of the two sets of No. 1 small transmission discs.

[0011] As a preferred technical solution of the road construction crossing protection equipment of the present invention, the outer wall of the first rotating shaft is fixedly fitted with two sets of second large transmission discs, the outer wall of the third rotating shaft is fixedly fitted with two sets of second small transmission discs, the outer walls of the two sets of second large transmission discs are provided with second transmission belts, and the inner walls of the other ends of the two sets of second transmission belts are respectively connected to the outer walls of the two sets of second small transmission discs.

[0012] As a preferred technical solution of the road construction crossing protection equipment of the present invention, a locking mechanism is provided on the outer wall of the third rotating seat. The locking mechanism includes a fixing block. The fixing block has a rectangular groove at its end, and a rectangular rod is slidably connected to the inner wall of the rectangular groove. A disc is provided at one end of the rectangular rod outside the rectangular groove. Multiple sets of toothed blocks are provided on the outer wall of the disc, and the multiple sets of toothed blocks mesh with two sets of first gears. A return spring is provided at one end of the rectangular rod inside the rectangular groove, and the other end of the return spring is connected to the inner wall of the rectangular groove.

[0013] As a preferred technical solution of the road construction crossing protection device of the present invention, the outer wall of the rectangular rod is provided with two sets of sliding grooves, and the inner walls of the two sets of sliding grooves are slidably connected with locking blocks. The inner wall of the rectangular groove is provided with two sets of locking slots, and the two sets of locking slots fit with the two sets of locking blocks. The outer walls of the two sets of locking blocks are provided with movable grooves, and the inner walls of the two sets of movable grooves are slidably connected with movable shafts. The interior of the rectangular rod is provided with a sliding groove on one side of the two sets of sliding grooves. The ends of the two sets of movable shafts are provided with connecting rods, and one end of the two sets of connecting rods extends into the interior of the sliding groove. The inner wall of the sliding groove is slidably connected with a pull plate, and the outer wall of the pull plate is fixedly connected to the ends of the two sets of connecting rods. The outer wall of the pull plate is provided with a limiting tension spring, and the other end of the limiting tension spring is connected to the inner wall of the sliding groove. The outer wall of the pull plate is provided with a pull rod, and one end of the pull rod extends to the outside of the disc.

[0014] As a preferred technical solution of the road construction crossing protection equipment of the present invention, the inner wall of the rectangular groove is provided with two sets of limiting grooves, the outer wall of the rectangular rod is provided with two sets of limiting blocks, and the outer walls of the two sets of limiting blocks are slidably connected to the inner walls of the two sets of limiting grooves.

[0015] As a preferred technical solution of the road construction crossing protection equipment of the present invention, the outer walls of the two sets of lower folding plates are provided with an impact-resistant mechanism, the impact-resistant mechanism includes a damper, the outer walls of the two sets of lower folding plates are provided with multiple sets of dampers, the outer walls of the multiple sets of dampers are provided with impact-resistant plates, and the outer walls of the impact-resistant plates are arc-shaped. The outer walls of the two sets of impact-resistant plates near the dampers are provided with multiple sets of shock-absorbing springs, and the other end of the multiple sets of shock-absorbing springs is connected to the outer wall of the lower folding plates.

[0016] In summary, the present invention has the following main beneficial effects:

[0017] 1. This invention, by setting up a folding mechanism, utilizes the first, second, and third rotating shafts in the folding mechanism to allow the upper folding plate, lower folding plate, and support leg to all fold towards the mounting plate. This effectively reduces the size of the device during transportation, facilitating transport, and allows for quick opening during installation, reducing pre-construction construction time and thus minimizing road closure time, which is beneficial for road traffic management.

[0018] 2. By setting up a transmission mechanism, the present invention enables the two sets of lower folding plates and the two sets of upper folding plates to be flipped open simultaneously when the support leg is flipped open, thus avoiding the need to open the support leg, upper folding plate and lower folding plate in sequence and reducing installation time.

[0019] 3. By setting a locking mechanism, the present invention can lock the support leg, the upper folding plate and the lower folding plate when they are closed to prevent them from opening, and can prevent them from rotating and closing after they are opened, thereby improving the stability of the device when it is closed and opened.

[0020] 4. By setting up an anti-impact mechanism and utilizing dampers and shock-absorbing springs, the present invention enables the anti-impact plate to effectively buffer the impact force when a vehicle accidentally hits the device, preventing the device from being damaged in the event of an impact. Attached Figure Description

[0021] Figure 1 This is a front-view perspective view of the present invention;

[0022] Figure 2 This is a schematic diagram of the folding mechanism structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged view of A in the middle;

[0024] Figure 4 This is a schematic diagram of the transmission mechanism structure of the present invention;

[0025] Figure 5 This is a cross-sectional view of the fixing block of the present invention;

[0026] Figure 6 This is a cross-sectional view of the rectangular rod of the present invention;

[0027] Figure 7 This is a schematic diagram of the impact-resistant mechanism of the present invention.

[0028] In the diagram: 100, mounting plate; 200, folding mechanism; 300, transmission mechanism; 400, locking mechanism; 500, impact-resistant mechanism;

[0029] 101. Support leg; 102. Upper folding plate; 103. Lower folding plate; 104. Warning display screen;

[0030] 201. Rotary seat No. 1; 202. Rotary shaft No. 1; 203. Rotary seat No. 2; 204. Rotary shaft No. 2; 205. Rotary seat No. 3; 206. Rotary shaft No. 3;

[0031] 301. Gear No. 1; 302. Large Transmission Disc No. 1; 303. Rotating Seat No. 4; 304. Gear No. 2; 305. Small Transmission Disc No. 1; 306. Transmission Belt No. 1; 307. Gear No. 3; 308. Large Transmission Disc No. 2; 309. Small Transmission Disc No. 2; 310. Transmission Belt No. 2;

[0032] 401. Fixed block; 402. Rectangular rod; 403. Disc; 404. Toothed block; 405. Locking block; 406. Locking groove; 407. Movable groove; 408. Movable shaft; 409. Connecting rod; 410. Pull plate; 411. Pull rod; 412. Limiting groove; 413. Limiting block;

[0033] 501. Damper; 502. Impact plate; 503. Shock-absorbing spring. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of the present invention will now be described.

[0036] A type of road construction crossing protection equipment, such as Figure 1-2 As shown, the mounting plate 100 is provided with two sets of support legs 101 on both sides of the mounting plate 100, two sets of upper folding plates 102 are provided above the mounting plate 100, two sets of lower folding plates 103 are provided below the mounting plate 100, and a folding mechanism 200 is provided on the outer wall of the mounting plate 100.

[0037] The folding mechanism 200 includes a first rotating seat 201. Two sets of first rotating seats 201 are provided on the lower sides of both ends of the mounting plate 100. A first rotating shaft 202 is rotatably connected to the end of each set of first rotating seats 201 that is close to each other. Two sets of second rotating seats 203 are provided on the upper sides of both ends of the mounting plate 100. A second rotating shaft 204 is rotatably connected to the end of each set of second rotating seats 203 that is close to each other. Two sets of third rotating seats 204 are provided at the bottom of the mounting plate 100. 5. Two sets of No. 3 rotating seats 205 are rotatably connected to one end of each other, and two sets of No. 3 rotating shafts 206 are rotatably connected to one end of each other. The inner walls of the two sets of support legs 101 are fixedly sleeved on the outer wall of the No. 1 rotating shaft 202. The inner walls of the two sets of upper folding plates 102 are respectively fixedly sleeved on the outer wall of the No. 2 rotating shaft 204. The inner walls of the two sets of lower folding plates 103 are respectively fixedly sleeved on the outer wall of the No. 3 rotating shaft 206. Warning display screens 104 are provided on the mounting plate 100 and the outer walls of the two sets of upper folding plates 102.

[0038] The upper folding plate 102, the lower folding plate 103, and the support leg 101 can all be folded toward the mounting plate 100. This effectively reduces the size of the device during transportation, making it convenient to transport. It can also be quickly opened for easy installation. When the device is in the closed transportation state, the warning display screen 104 is protected inside by the upper folding plate 102, preventing the warning display screen 104 from being damaged by bumps.

[0039] Please refer to this carefully. Figure 1-4The first rotating shaft 202 has two ends that pass through two sets of first rotating seats 201. Both ends of the first rotating shaft 202 are equipped with a transmission mechanism 300, which includes a first gear 301. Both ends of the two sets of first rotating shafts 202 passing through the two sets of first rotating seats 201 are equipped with first gears 301, and the two sets of first gears 301 mesh with each other. The two sets of second rotating shafts 204 have two ends that pass through two sets of second rotating seats 203. Both ends of the two sets of second rotating shafts 204 passing through the second transmission seats are equipped with third gears 307, and the two sets of third gears 307 mesh with each other. The outer walls of both ends of the mounting plate 100 are equipped with two sets of fourth rotating seats 303, and the outer walls of the two sets of fourth rotating seats 303 are rotatably connected to second gears 304. Furthermore, the two sets of No. 2 gears 304 mesh with each other, the outer walls of the two sets of No. 1 gears 301 are provided with No. 1 large transmission discs 302, the outer walls of the two sets of No. 2 gears 304 are provided with No. 1 small transmission discs 305, the outer walls of the two sets of No. 1 large transmission discs 302 are provided with No. 1 transmission belts 306, and the inner walls of the other ends of the two sets of No. 1 transmission belts 306 are respectively connected to the outer walls of the two sets of No. 1 small transmission discs 305. The outer wall of the No. 1 rotating shaft 202 is fixedly fitted with two sets of No. 2 large transmission discs 308, the outer wall of the No. 3 rotating shaft 206 is fixedly fitted with two sets of No. 2 small transmission discs 309, the outer walls of the two sets of No. 2 large transmission discs 308 are provided with No. 2 transmission belts 310, and the inner walls of the other ends of the two sets of No. 2 transmission belts 310 are respectively connected to the outer walls of the two sets of No. 2 small transmission discs 309.

[0040] When one set of support legs 101 is opened, it drives the first rotating shaft 202 to rotate. The first rotating shaft 202, through the meshing of two sets of first gears 301, drives another set of first rotating shafts 202 to rotate in the opposite direction. That is, the two sets of support legs 101 on both sides of the mounting plate 100 open in opposite directions simultaneously. The first gear 301 drives the first large transmission disc 302 to rotate. The first large transmission disc 302 drives the first small transmission disc 305 to rotate through the first transmission belt 306. The first small transmission disc 305 drives the third gear 307 to rotate in the opposite direction through the second gear 304. The third gear 307 then drives the upper folding plate 102 to flip upward and open through the second rotating shaft 204. At the same time, the rotation of the first rotating shaft 202 drives the second transmission disc 308 to rotate through the second large transmission disc 308. When the drive belt 310 rotates, the second drive belt 310 drives the third rotating shaft 206 to rotate via the second small drive disc 309. The third rotating shaft 206 then drives the lower folding plate 103 to flip down and open. It should be noted that the diameter of the first large drive disc 302 is larger than that of the first small drive disc 305. When the support leg 101 is fully opened, the upper folding plate 102 is also fully opened. When the support leg 101 is fully retracted, the upper folding plate 102 is also fully retracted. It should also be noted that the diameter of the second large drive disc 308 is larger than that of the second small drive disc 309. When the support leg 101 is fully opened, the lower folding plate 103 is also fully opened. When the support leg 101 is fully retracted, the lower folding plate 103 is also fully retracted.

[0041] Please refer to this carefully. Figure 1-6 A locking mechanism 400 is provided on the outer wall of a set of three rotating seats 205. The locking mechanism 400 includes a fixing block 401. The fixing block 401 has a rectangular groove at its end, and a rectangular rod 402 is slidably connected to the inner wall of the rectangular groove. A disc 403 is provided at one end of the rectangular rod 402 outside the rectangular groove. Multiple sets of toothed blocks 404 are provided on the outer wall of the disc 403, and the multiple sets of toothed blocks 404 mesh with two sets of first gears 301. A return spring is provided at one end of the rectangular rod 402 inside the rectangular groove, and the other end of the return spring is connected to the inner wall of the rectangular groove. Two sets of sliding grooves are provided on the outer wall of the rectangular rod 402, and locking blocks 405 are slidably connected to the inner walls of the two sets of sliding grooves. Two sets of locking slots 406 are provided on the inner wall of the rectangular groove, and the two sets of locking slots 406 engage with the two sets of locking blocks 405. The outer wall of the rectangular rod 402 is provided with a movable groove 407. The inner walls of the two movable grooves 407 are slidably connected with movable shafts 408. The inner wall of the rectangular rod 402 is provided with a sliding groove on one side of the two sliding grooves. The ends of the two movable shafts 408 are provided with connecting rods 409, and one end of the two connecting rods 409 extends into the interior of the sliding groove. The inner wall of the sliding groove is slidably connected with a pull plate 410, and the outer wall of the pull plate 410 is fixedly connected to the ends of the two connecting rods 409. The outer wall of the pull plate 410 is provided with a limiting spring, and the other end of the limiting spring is connected to the inner wall of the sliding groove. The outer wall of the pull plate 410 is provided with a pull rod 411, and one end of the pull rod 411 extends to the outside of the disc 403. The inner wall of the rectangular groove is provided with two sets of limiting grooves 412. The outer wall of the rectangular rod 402 is provided with two sets of limiting blocks 413, and the outer walls of the two sets of limiting blocks 413 are slidably connected to the inner walls of the two sets of limiting grooves 412.

[0042] When it is necessary to fold up the support leg 101, upper folding plate 102, and lower folding plate 103, simply pull the handle backward. The handle moves the pull plate 410, which in turn moves the two sets of movable shafts 408 via the connecting rod 409. Because the locking block 405 is located inside the slide groove, the movable shafts 408 cannot slide inside the movable groove 407, thus allowing the rectangular rod 402 to move. The rectangular rod 402 then moves the toothed block 404 and the two sets of first gears 301 via the disc 403. When the locking block 405 moves to its original position, the movable shaft 408 moves the locking block 405 into the locking groove 406 via the movable groove 407. The pulling of the limiting spring prevents the locking block 405 from entering the slide groove, thus preventing the support leg 101, upper folding plate 102, and lower folding plate 103 from being folded up during rotation. When the lower folding plate 103 is folded down, the toothed block 404 resets and locks the first gear 301. At this time, the support leg 101, the upper folding plate 102, and the lower folding plate 103 can be rotated and retracted. When the support leg 101, the upper folding plate 102, and the lower folding plate 103 are fully retracted or opened, simply push the handle. The handle will drive the movable shaft 408 forward and bring the locking block 405 into the slide groove through the movable groove 407. At this time, the reset spring will pull the rectangular rod 402 to reset, which will drive the disc 403 and the toothed block 404 to reset. At this time, the toothed block 404 will mesh with the two sets of first gears 301, preventing the first gear 301 from rotating. This prevents the support leg 101, the upper folding plate 102, and the lower folding plate 103 from rotating, thus fixing the position of the support leg 101, the upper folding plate 102, and the lower folding plate 103.

[0043] Please refer to this carefully. Figure 1-7 The outer walls of the two sets of lower folding plates 103 are provided with an impact-resistant mechanism 500. The impact-resistant mechanism 500 includes a damper 501. The outer walls of the two sets of lower folding plates 103 are provided with multiple sets of dampers 501. The outer walls of the multiple sets of dampers 501 are provided with an impact-resistant plate 502. The outer walls of the impact-resistant plate 502 are arc-shaped. The two sets of impact-resistant plates 502 are provided with multiple sets of shock-absorbing springs 503 near the outer walls of the dampers 501. The other end of the multiple sets of shock-absorbing springs 503 is connected to the outer wall of the lower folding plate 103.

[0044] When a vehicle accidentally hits the device, the impact plate 502, through the cooperation of the damper 501 and the shock absorber spring 503, can effectively buffer the impact force and prevent the device from being damaged in parallel when it is hit.

[0045] In use, the folding mechanism 200 utilizes the first rotating shaft 202, the second rotating shaft 204, and the third rotating shaft 206 to allow the upper folding plate 102, the lower folding plate 103, and the support leg 101 to fold towards the mounting plate 100. This effectively reduces the size of the device during transportation, facilitating transport. Furthermore, it allows for quick opening during installation, reducing pre-construction time and thus minimizing road closures, which is beneficial for traffic management. When the support leg 101 is flipped open, it simultaneously flips open both sets of lower folding plates 103 and both sets of upper folding plates 102, avoiding the need for sequential flipping. The installation time is reduced by opening the support leg 101, upper folding plate 102, and lower folding plate 103. The locking mechanism 400 can lock the support leg 101, upper folding plate 102, and lower folding plate 103 when they are closed, preventing them from opening. It can also prevent the support leg 101, upper folding plate 102, and lower folding plate 103 from rotating and closing after they are opened, thus improving the stability of the device when it is closed and opened. The damper 501 and shock absorber spring 503 can effectively buffer the impact force when a vehicle accidentally hits the device, preventing the device from being damaged in the event of an impact.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A road construction crossing protection device, comprising a mounting plate (100), characterized in that: The mounting plate (100) is provided with two sets of support legs (101) on both sides. The upper front and rear side walls of the mounting plate (100) are provided with a set of upper folding plates (102) respectively. The lower front and rear side walls of the mounting plate (100) are provided with a set of lower folding plates (103) respectively. The outer wall of the mounting plate (100) is provided with a folding mechanism (200). The folding mechanism (200) includes a first rotating seat (201). Two sets of the first rotating seats (201) are provided on the lower sides of the front and rear side walls of the mounting plate (100). The two sets of first rotating seats (201) are respectively located at the left and right ends of the mounting plate (100). A first rotating shaft (202) is rotatably connected to the end of each set of first rotating seats (201) that is close to each other. Two sets of second rotating seats (203) are provided on the upper sides of the front and rear side walls of the mounting plate (100). The two sets of second rotating seats (203) are respectively located at the left and right ends of the mounting plate (100). Two first rotating shafts (202) are rotatably connected to the end of each set of second rotating seats (203) that is close to each other. The mounting plate (100) has two sets of No. 3 rotating seats (205) at the bottom of the front and rear side walls of the No. 3 rotating shaft (204). The two sets of No. 3 rotating seats (205) are respectively located at the left and right ends of the mounting plate (100). The two sets of No. 3 rotating seats (205) are rotatably connected to the two sets of No. 3 rotating shafts (206) at their close ends. The inner walls of the two sets of support legs (101) are fixedly sleeved on the outer wall of the No. 1 rotating shaft (202). The inner walls of the two sets of upper folding plates (102) are respectively fixedly sleeved on the outer wall of the No. 2 rotating shaft (204). The inner walls of the two sets of lower folding plates (103) are respectively fixedly sleeved on the outer wall of the No. 3 rotating shaft (206).

2. The road construction crossing protection device according to claim 1, characterized in that: Warning display screens (104) are provided on the outer walls of the mounting plate (100) and the two sets of upper folding plates (102).

3. The road construction crossing protection device according to claim 1, characterized in that: The two ends of the first rotating shaft (202) are respectively connected to the first rotating seat (201) near its two ends. Both ends of the first rotating shaft (202) are provided with a transmission mechanism (300). The transmission mechanism (300) includes a first gear (301). The two ends of the first rotating shaft (202) are connected to the first gear (301). The two first gears (301) located at the same end mesh with each other. The two ends of the second rotating shaft (204) are respectively connected to the second rotating seat (203) near its two ends. Both ends of the second rotating shaft (204) are provided with a third gear (307). The two third gears (307) located at the same end mesh with each other.

4. A road construction crossing protection device according to claim 3, characterized in that: The mounting plate (100) has two sets of No. 4 rotating seats (303) on its front and rear side walls. The two sets of No. 4 rotating seats (303) are respectively located at the left and right ends of the mounting plate (100). The outer walls of the two sets of No. 4 rotating seats (303) are rotatably connected to No. 2 gears (304), and the two No. 2 gears (304) located at the same end mesh with each other. The outer walls of the two sets of No. 1 gears (301) are provided with No. 1 large transmission discs (302), the outer walls of the two sets of No. 2 gears (304) are provided with No. 1 small transmission discs (305), the outer walls of the two sets of No. 1 large transmission discs (302) are provided with No. 1 transmission belts (306), and the inner walls of the other ends of the two sets of No. 1 transmission belts (306) are respectively connected to the outer walls of the two sets of No. 1 small transmission discs (305).

5. A road construction crossing protection device according to claim 1, characterized in that: The outer wall of the first rotating shaft (202) is fixedly fitted with two sets of second large transmission discs (308), and the outer wall of the third rotating shaft (206) is fixedly fitted with two sets of second small transmission discs (309). The outer walls of the two sets of second large transmission discs (308) are provided with second transmission belts (310), and the inner walls of the other ends of the two sets of second transmission belts (310) are respectively connected to the outer walls of the two sets of second small transmission discs (309).

6. A road construction crossing protection device according to claim 1, characterized in that: A locking mechanism (400) is provided on the outer wall of a set of three rotating seats (205). The locking mechanism (400) includes a fixing block (401). The fixing block (401) is provided on the outer wall of a set of three rotating seats (205). A rectangular groove is provided at the end of the fixing block (401), and a rectangular rod (402) is slidably connected to the inner wall of the rectangular groove. A disc (403) is provided at one end of the rectangular rod (402) located outside the rectangular groove. Multiple sets of toothed blocks (404) are provided on the outer wall of the disc (403), and the multiple sets of toothed blocks (404) mesh with two sets of first gears (301). A reset spring is provided at one end of the rectangular rod (402) located inside the rectangular groove, and the other end of the reset spring is connected to the inner wall of the rectangular groove.

7. A road construction crossing protection device according to claim 6, characterized in that: The outer wall of the rectangular rod (402) is provided with two sets of sliding grooves, and the inner walls of the two sets of sliding grooves are slidably connected with locking blocks (405). The inner walls of the rectangular grooves are provided with two sets of locking slots (406), and the two sets of locking slots (406) fit with the two sets of locking blocks (405). The outer walls of the two sets of locking blocks (405) are provided with movable grooves (407), and the inner walls of the two sets of movable grooves (407) are slidably connected with movable shafts (408). The interior of the rectangular rod (402) is provided with a sliding groove on one side of the two sets of sliding grooves. The shaft (408) is provided with a connecting rod (409) at its end, and one end of the two sets of connecting rods (409) extends into the interior of the sliding groove. The inner wall of the sliding groove is slidably connected with a pull plate (410), and the outer wall of the pull plate (410) is fixedly connected to the ends of the two sets of connecting rods (409). The outer wall of the pull plate (410) is provided with a limiting tension spring, and the other end of the limiting tension spring is connected to the inner wall of the sliding groove. The outer wall of the pull plate (410) is provided with a pull rod (411), and one end of the pull rod (411) extends to the outside of the disc (403).

8. A road construction crossing protection device according to claim 6, characterized in that: The inner wall of the rectangular groove is provided with two sets of limiting grooves (412), and the outer wall of the rectangular rod (402) is provided with two sets of limiting blocks (413), and the outer walls of the two sets of limiting blocks (413) are slidably connected to the inner walls of the two sets of limiting grooves (412).

9. A road construction crossing protection device according to claim 1, characterized in that: The outer walls of the two sets of lower folding plates (103) are provided with an impact-resistant mechanism (500). The impact-resistant mechanism (500) includes a damper (501). The outer walls of the two sets of lower folding plates (103) are provided with multiple sets of dampers (501). The outer walls of the multiple sets of dampers (501) are provided with impact-resistant plates (502), and the outer walls of the impact-resistant plates (502) are arc-shaped. The two sets of impact-resistant plates (502) are provided with multiple sets of shock-absorbing springs (503) near the outer walls of the dampers (501), and the other end of the multiple sets of shock-absorbing springs (503) is connected to the outer wall of the lower folding plate (103).

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