A highway safety warning device

Abstract

The application discloses a highway safety warning device and relates to the technical field of highway traffic safety devices. The device is capable of preventing the warning board from being blown down by wind. The device comprises a support frame, a rotating block rotatably connected to the support frame, a support rod fixedly connected to the rotating block, a first warning board fixedly connected to the upper end of the support rod, symmetrically distributed rotating shafts slidably connected to the support frame, belts for driving the symmetrically distributed rotating shafts, first threaded rods fixedly connected to the symmetrically distributed rotating shafts, spline rods fixedly connected to the symmetrically distributed first threaded rods, the symmetrically distributed spline rods rotatably connected to the support frame, and symmetrically distributed counterweights threadedly connected to the symmetrically distributed first threaded rods. The position of the counterweights is adjusted to change the gravity center of the device, thereby enhancing the wind resistance of the device and preventing the device from losing the warning effect after being blown down by wind.

Description

Technical Field

[0001] This invention relates to the field of highway traffic safety devices, and in particular to a highway safety warning device. Background Technology

[0002] Highways experience heavy traffic during use, leading to road surface damage. Repairs are necessary, requiring the placement of safety warning devices at a certain distance before or after the work site to alert oncoming traffic. However, most existing warning devices are simply ground-mounted signs. On sloping roads or in windy conditions, these signs are prone to tipping over or being blown down, rendering them ineffective and potentially causing accidents for oncoming vehicles. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides a highway safety warning device.

[0004] The technical solution is as follows: A highway safety warning device includes a support frame, a rotating block rotatably connected to the support frame, a support rod fixedly connected to the rotating block, a first warning sign fixedly connected to the upper end of the support rod, symmetrically distributed rotating shafts slidably connected inside the support frame, the symmetrically distributed rotating shafts being driven by belts, each symmetrically distributed rotating shaft being fixedly connected to a first threaded rod, each symmetrically distributed first threaded rod being fixedly connected to a splined rod, each symmetrically distributed splined rod being rotatably connected to the support frame, and the symmetrically distributed first threaded rods being threadedly connected to symmetrically distributed counterweights, and the support frame being equipped with a detection mechanism for detecting wind speed.

[0005] Further explanation: The detection mechanism includes a fixed frame, which is fixedly connected to the support frame. A first fixed block is disposed within the fixed frame. A columnar rod is rotatably connected to the first fixed block. A fan blade is fixedly connected to the columnar rod. A torsion spring is connected between the fan blade and the first fixed block. A rotating rod is rotatably connected to the support frame. The rotating rod and the columnar rod are driven by a belt and a pulley. A first gear is fixedly connected to the rotating rod. A fixed ring is fixedly connected to the support frame. The fixed ring is slidably connected to the splined rod. A second gear is rotatably connected to the fixed ring. The first gear meshes with the second gear. The splined rod near the fixed frame is splinedly connected to the second gear. The support frame is provided with an adjustment mechanism for adjusting the initial position of the counterweight.

[0006] To further explain, the adjustment mechanism includes a second threaded rod, which is threadedly connected to the support frame. The second threaded rod is rotatably connected to a connecting block, and the connecting block is rotatably connected to the adjacent spline rod.

[0007] Further explanation: The system also includes a switching mechanism located on the rotating block. This mechanism is used to replace the warning sign when the wind speed is too high. The switching mechanism includes a second warning sign fixed to the rotating block, with axially distributed warning light strips fixed to it. A second fixed block is rotatably connected to the support frame, and a hydraulic telescopic rod is fixed to the second fixed block. The telescopic end of the hydraulic telescopic rod is rotatably connected to the support rod, and a first tension spring connects the telescopic end of the hydraulic telescopic rod to the second fixed block. A first cylindrical shell is fixed to the support frame, with an air hole and a one-way valve. The first cylindrical shell and the hydraulic telescopic rod are connected via a conduit. A cylindrical plug is slidably connected inside the first cylindrical shell, with a rack fixed to one end. A motor is fixed to the upper side of the support frame, and a third gear is fixed to the output shaft of the motor, meshing with the rack. The first cylindrical shell is equipped with a measuring mechanism for detecting whether the wind speed has reached a level requiring switching to the size of the second warning sign.

[0008] To further explain, the distance from the rotating block to the telescopic end of the hydraulic telescopic rod is equal to its distance to the second fixed block.

[0009] Further explanation: The measuring mechanism includes a first limiting block, which is slidably connected to the first cylindrical shell. The first limiting block engages with the cylindrical plug. A second tension spring connects the first limiting block and the first cylindrical shell. A second cylindrical shell is fixedly connected to the first cylindrical shell. A first sliding rod is slidably connected inside the second cylindrical shell. A push block is fixedly connected to one end of the first sliding rod. The push block engages with the first limiting block. A fixing frame is rotatably connected to the first fixing block. A third cylindrical shell is fixedly connected to the fixing frame. The third cylindrical shell and the... The second cylindrical shell is filled with hydraulic oil and the two are connected by a conduit. The first fixing block is fixedly connected to the second limiting block, which is slidably and rotatably connected to the fixing frame. The second limiting block is fixedly connected to the second sliding rod, which is slidably connected to the third cylindrical shell. An arc-shaped compression spring is connected between the second limiting block and the fixing frame. The fixing frame is slidably connected to a locking block, which is connected to the fixing frame by a spring. A recessed hole is provided on the side of the first fixing block away from the fan blade, and the locking block engages with the recessed hole on the first fixing block.

[0010] To further explain, the elastic coefficient of the spring connecting the card block and the fixing frame is greater than the elastic coefficient of the arc-shaped compression spring.

[0011] To further explain, the contact point between the first limiting block and the push block is set as an isosceles triangular block, and the push block is provided with an isosceles triangular groove, which cooperates with the isosceles triangular block of the first limiting block.

[0012] Further explanation: The system also includes a cleaning mechanism mounted on the support frame. This cleaning mechanism is used to clean dust and dirt from the first warning sign. The cleaning mechanism includes a support block fixed to the support frame. The support block is rotatably connected to a first bevel gear, which is driven by a pulley and belt to the output shaft of the motor. The first warning sign is fixedly connected to symmetrically distributed third fixing blocks. A third threaded rod is rotatably connected to the third fixing block near the support block. A second bevel gear is fixedly connected to the third threaded rod near the support block, meshing with the first bevel gear. A guide rod is fixedly connected to the third fixing block away from the support block. A scraper is slidably connected to the guide rod, and the scraper is threadedly connected to the third threaded rod.

[0013] To further explain, both the upper and lower sides of the scraper are designed as bevels.

[0014] The beneficial effects of the present invention are as follows: by adjusting the position of the counterweight, the present invention changes the center of gravity of the device, thereby enhancing the wind resistance of the device and preventing the device from losing its warning function after being blown over by the wind.

[0015] This invention detects wind speed by rotating the fan blades at different angles as the wind blows them, and then adjusts the position of the counterweight according to the wind speed to prevent the warning sign from being blown over by the wind.

[0016] The first limiting block of the present invention moves upward to release the limiting of the cylindrical plug, so that when the wind speed reaches a certain level, it switches to the second warning sign, reducing the wind-blown area of ​​the device and preventing the device from being blown off-center or the support rod from being broken by the wind when the wind speed is too high, thus causing the device to lose its warning function.

[0017] This invention uses the output shaft of a motor to drive the first bevel gear to rotate, causing the scraper to move up and down, so that the scraper can remove dust and dirt from the surface of the first warning sign after the motor is started. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the first warning sign, the support block, and the second warning sign of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the first warning sign, support frame, and counterweight of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the first threaded rod, counterweight, and spline rod of the present invention;

[0022] Figure 5 This is a three-dimensional structural cross-sectional view of the fixing frame, the first threaded rod, and the fan blade of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the second threaded rod, connecting block, and spline rod of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the hydraulic telescopic rod, the first tension spring, and the second warning sign of the present invention;

[0025] Figure 8 This is a three-dimensional structural cross-sectional view of the hydraulic telescopic rod, the first cylindrical shell, and the cylindrical plug of the present invention;

[0026] Figure 9 This is a three-dimensional structural diagram of the fixing frame, cylindrical plug, and second limiting block of the present invention;

[0027] Figure 10 This is a three-dimensional structural diagram of the card block, the second slide bar, and the third cylindrical shell of the present invention;

[0028] Figure 11 This is a three-dimensional structural diagram of the first limiting block, the first cylindrical shell, and the push block of the present invention;

[0029] Figure 12 This is a three-dimensional structural diagram of the first bevel gear, scraper, and support block of the present invention.

[0030] Explanation of reference numerals in the attached drawings: 101, support frame; 102, rotating block; 103, support rod; 104, first warning sign; 105, rotating shaft; 106, first threaded rod; 107, splined rod; 108, counterweight; 2, detection mechanism; 201, fixed frame; 2011, first fixed block; 202, columnar rod; 203, fan blade; 204, torsion spring; 205, rotating rod; 206, first gear; 207, fixed ring; 208, second gear; 3, adjusting mechanism; 301, second threaded rod; 302, connecting block; 4, switching mechanism; 401, second warning sign; 402, warning light strip; 403, second fixed block; 404, hydraulic system. 405. Telescopic rod, 406. First tension spring, 407. First cylindrical shell, 408. Cylindrical plug, 409. Rack, 410. Motor, 5. Third gear, 5. Measuring mechanism, 501. First limiting block, 502. Second tension spring, 503. Second cylindrical shell, 504. First sliding rod, 505. Push block, 506. Third cylindrical shell, 507. Second limiting block, 508. Second sliding rod, 509. Arc-shaped compression spring, 510. Locking block, 6. Cleaning mechanism, 601. Support block, 602. First bevel gear, 603. Third fixing block, 604. Third threaded rod, 605. Second bevel gear, 606. Guide rod, 607. Scraper. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the scope of protection and application of the present invention.

[0032] Example 1: A highway safety warning device, such as Figures 1-4 As shown, the device includes a support frame 101, a rotating block 102 rotatably connected to the upper side of the support frame 101, a support rod 103 fixedly connected to the side wall of the rotating block 102, a first warning sign 104 fixedly connected to the upper end of the support rod 103, the first warning sign 104 being used to warn oncoming vehicles to pay attention to safety, two symmetrically distributed rotating shafts 105 slidingly connected inside the support frame 101, the rotating shafts 105 on both sides being driven by pulleys and belts, the rear ends of the two symmetrically distributed rotating shafts 105 are each fixedly connected to a first threaded rod 106, the two first threaded rods 106 having the same thread direction, the rear ends of the two symmetrically distributed first threaded rods 106 are each fixedly connected to a spline rod 107, the two symmetrically distributed spline rods 107 being slidably and rotatably connected to the support frame 101, the two symmetrically distributed first threaded rods 106 being threadedly connected to two symmetrically distributed counterweights 108, the counterweights 108 being used to adjust the center of gravity of the device, and the support frame 101 being provided with a detection mechanism 2 for detecting wind speed.

[0033] like Figure 5As shown, the detection mechanism 2 includes a fixed frame 201, which is fixedly connected to the support frame 101. A first fixed block 2011 is disposed inside the fixed frame 201. A cylindrical rod 202 is rotatably connected to the first fixed block 2011. A fan blade 203 is fixedly connected to the rear end of the cylindrical rod 202. The fan blade 203 is used to detect wind direction and wind speed. A torsion spring 204 is connected between the fan blade 203 and the first fixed block 2011 for resetting the fan blade 203. A rotating rod 205 is rotatably connected to the support frame 101. The rotating rod 205 and the column rod 202 are driven by a belt and a pulley. The front part of the rotating rod 205 is fixedly connected to the first gear 206. The support frame 101 is fixedly connected to the fixing ring 207, which is slidably connected to the spline rod 107. The fixing ring 207 is rotatably connected to the second gear 208. The first gear 206 and the second gear 208 mesh. The spline rod 107 on the right side is splinedly connected to the second gear 208. The support frame 101 is provided with an adjustment mechanism 3 for adjusting the initial position of the counterweight 108.

[0034] like Figure 6 As shown, the adjustment mechanism 3 includes a second threaded rod 301, which is threadedly connected to the support frame 101. A disc is provided at the rear end of the second threaded rod 301 for the operator to rotate the second threaded rod 301. A connecting block 302 is rotatably connected to the second threaded rod 301, and the connecting block 302 is rotatably connected to the spline rod 107 on the right side.

[0035] During daily use, highways may suffer localized damage due to factors such as load and weather. When repairing highways, safety warning signs must be placed at a certain distance from the construction site. When workers place the warning signs, they should place the devices on the highway surface and turn on the lights on the warning signs to alert passing vehicles that construction is underway ahead.

[0036] During the aforementioned process of preventing warning signs from being placed, when the road surface is sloping, the workers rotate the second threaded rod 301 before placement. The rotation of the second threaded rod 301 causes the connecting block 302 to move back and forth. The connecting block 302 causes the adjacent spline rod 107 to move. The spline rod 107 causes the adjacent first threaded rod 106 to move. The movement of the first threaded rod 106 causes the symmetrically distributed counterweights 108 to move back and forth. The counterweights 108 cause the first threaded rod 106 on the left to move. The movement of the counterweights 108 changes the position of the center of gravity of the support frame 101. By changing the initial position of the counterweights 108, the center of gravity of the device is adjusted, so that the support frame 101 can be better placed on the road surface and is less likely to be blown over by the wind.

[0037] After the support frame 101 is placed on the road surface, when there is wind in front of the road, the wind blows the fan blade 203 to rotate. The fan blade 203 drives the cylindrical rod 202 to rotate. The cylindrical rod 202 drives the rotating rod 205 to rotate via a pulley and belt. The rotating rod 205 drives the first gear 206 to rotate. The first gear 206 drives the second gear 208 to rotate. The second gear 208 drives the adjacent spline rod 107 to rotate. The spline rod 107 drives the adjacent first threaded rod 106 to rotate. Rod 106 drives the right-side rotating shaft 105 to rotate, and through pulleys and belts, drives the left-side rotating shaft 105 to rotate. The left-side rotating shaft 105 drives the adjacent spline rod 107 to rotate. The rotation of the symmetrically distributed spline rods 107 together drives the symmetrically distributed counterweights 108 to move forward. The forward movement of the counterweights 108 shifts the center of gravity of the device to the front, preventing it from being blown over by the wind. By adjusting the position of the counterweights 108, the center of gravity of the device is changed, enhancing the device's wind resistance and preventing it from being blown over by the wind.

[0038] During the process of the fan blade 203 driving the cylindrical rod 202 to rotate, the rotation of the fan blade 203 causes the torsion spring 204 to store force. The stored force of the torsion spring 204 brings resistance to the rotation of the fan blade 203. When the wind speed is fixed, the rotation of the fan blade 203 causes the torsion spring 204 to rotate and store force. When the torsion force of the torsion spring 204 on the fan blade 203 is equal to the torsion force brought by the wind blowing the fan blade 203, the fan blade 203 and the torsion spring 204 will no longer rotate, and the transmission first threaded rod 106 will no longer drive the counterweight 108 to move. At this time, the center of gravity of the device no longer changes.

[0039] After the first threaded rod 106 stops moving the counterweight 108, when the wind stops, the torsion spring 204 resets, causing the fan blade 203 and the cylindrical rod 202 to rotate and reset. The cylindrical rod 202 then drives the rotating rod 205 to rotate and reset, which in turn drives the first gear 206 to rotate and reset. The first gear 206 then drives the second gear 208 to rotate and reset, which in turn drives the adjacent spline rod 107 to rotate and reset. The spline rod 107 then drives the adjacent first threaded rod 106 to rotate and reset, and the first threaded rod 106 drives the right-side rotating shaft 105 to rotate and reset. Through pulleys and belts, it drives the left-side rotating shaft 105 to rotate and reset, which in turn drives the adjacent spline rod 107 to rotate and reset. The symmetrically distributed spline rods 107 rotate together to move and reset the symmetrically distributed counterweight 108. The fan blade 203 detects the wind speed and adjusts the position of the counterweight 108 to change the center of gravity of the device, thereby achieving the effect of preventing the device from being blown over by the wind.

[0040] Example 2: As Figure 7 and Figure 8As shown, it also includes a replacement mechanism 4, which is disposed on the rotating block 102. The replacement mechanism 4 is used to replace the warning sign when the wind speed is too high. The replacement mechanism 4 includes a second warning sign 401, which is used to replace the first warning sign 104 to provide a warning when the wind is strong. The second warning sign 401 is fixed to the front side of the rotating block 102, and the second warning sign 401 forms a 90° angle with the first warning sign 104. Four axially distributed warning light strips 402 are fixed to the front end of the second warning sign 401. The 402 strip is used for reflection and to provide flashing lights, assisting the first warning sign 104 in achieving its warning function. A second fixing block 403 is rotatably connected to the rear side of the support frame 101. A hydraulic telescopic rod 404 is fixedly connected to the second fixing block 403. The telescopic end of the hydraulic telescopic rod 404 is rotatably connected to the upper part of the support rod 103. A first tension spring 405 is connected between the telescopic end of the hydraulic telescopic rod 404 and the second fixing block 403. The first tension spring 405 is initially in a stretched state. A first column is fixedly connected to the upper side of the support frame 101. The first cylindrical shell 406 has two symmetrically distributed air holes on its front side. A one-way valve is installed in the upper air hole, while the lower hole is smaller, allowing outside air to enter the first cylindrical shell 406 through the one-way valve. The rear side of the first cylindrical shell 406 is connected to the hydraulic telescopic rod 404 via a conduit filled with hydraulic oil. The conduit stores the hydraulic oil from the hydraulic telescopic rod 404 into the first cylindrical shell 406. A cylindrical plug 407 is slidably connected inside the first cylindrical shell 406. A rack 408 is fixedly connected to the front end of the support frame 101, and a motor 409 is fixedly connected to the upper side of the support frame 101 to control the amount of hydraulic oil in the first cylindrical shell 406. A third gear 410 is fixedly connected to the output shaft of the motor 409. The third gear 410 meshes with the rack 408. The distance from the rotating block 102 to the extension end of the hydraulic telescopic rod 404 is equal to its distance to the second fixed block 403. The first cylindrical shell 406 is provided with a measuring mechanism 5 for detecting whether the wind speed has reached the size required to switch to the second warning sign 401.

[0041] like Figures 9-11As shown, the measuring mechanism 5 includes a first limiting block 501, which is slidably connected to the side wall of the first cylindrical shell 406. The lower end of the first limiting block 501 restricts the forward movement of the cylindrical plug 407. A second tension spring 502 is connected between the upper end of the first limiting block 501 and the first cylindrical shell 406. A second cylindrical shell 503 is fixedly connected to the upper side of the first cylindrical shell 406. A first sliding rod 504 is slidably connected inside the second cylindrical shell 503. A push block 505 is fixedly connected to the left end of 4. The contact point between the first limiting block 501 and the push block 505 is set as an isosceles triangular block. The push block 505 is provided with an isosceles triangular groove. The isosceles triangular groove of the push block 505 is pressed and engaged with the isosceles triangular block of the first limiting block 501. The left and right movement of the push block 505 can push the first limiting block 501 to move upward. The fixing frame 201 is rotatably connected to the first fixing block 2011. The fixing frame 201 is fixedly connected to the third cylindrical shell 5. 06. The third cylindrical shell 506 and the second cylindrical shell 503 are both filled with hydraulic oil and are connected by a conduit. The upper side of the first fixed block 2011 is fixedly connected to the second limiting block 507. The second limiting block 507 is slidably and rotatably connected to the fixed frame 201. The second limiting block 507 is fixedly connected to the second sliding rod 508. The second sliding rod 508 is slidably connected to the third cylindrical shell 506. An arc-shaped compression spring 509 is connected between the second limiting block 507 and the fixed frame 201. A locking block 510 is slidably connected to the front side of the fixed frame 201. The locking block 510 is connected to the fixed frame 201 by a spring. The spring is initially in a stretched state. A concave hole is provided on the front side of the first fixed block 2011. The spring connected between the locking block 510 and the fixed frame 201 resets and pushes it to move backward to press the concave hole on the first fixed block 2011. The elastic coefficient of the spring connected between the locking block 510 and the fixed frame 201 is greater than the elastic coefficient of the arc-shaped compression spring 509.

[0042] At night or in foggy weather, the warning light strip 402 is activated, providing auxiliary warning to oncoming vehicles. During the rotation of the aforementioned fan blade 203, when the wind speed increases to the point that the first fixed block 2011 presses against the locking block 510 and moves forward, the torsion spring 204 stores force, causing the first fixed block 2011 to rotate. The rotation of the first fixed block 2011 presses against the locking block 510, which moves forward and presses against the spring between itself and the fixed frame 201. The rotation of the first fixed block 2011 causes the second limiting block 507 to rotate, which in turn causes the arc-shaped compression spring 509 to deform and store force. The second limiting block 507 drives the second slide rod 508 to rotate. The movement of the second slide rod 508 changes the amount of hydraulic oil in the third cylindrical shell 506. The change in the amount of hydraulic oil in the third cylindrical shell 506 causes a change in the amount of hydraulic oil in the second cylindrical shell 503. The change in the amount of hydraulic oil in the second cylindrical shell 503 causes the first slide rod 504 to move. The first slide rod 504 pushes the push block 505 to move. The push block 505 moves and squeezes the first limiting block 501 to move upward and stretches the second tension spring 502. The upward movement of the first limiting block 501 releases the limitation on the cylindrical plug 407, allowing the cylindrical plug 407 to slide within the first cylindrical shell 406.

[0043] After the limiting of the cylindrical plug 407 is released, the first tension spring 405 resets and drives the extension end of the hydraulic telescopic rod 404 to retract. The extension end of the hydraulic telescopic rod 404 drives the support rod 103 to rotate. The support rod 103 drives the first warning sign 104 and the rotating block 102 to rotate. The rotation of the rotating block 102 drives the second warning sign 401 to rotate. When the first tension spring 405 contracts to the point of no elasticity, the support rod 103 rotates to be parallel to the upper side of the support frame 101. The rotating block 102 drives the second warning sign 401 to rotate to the vertical direction. In windy weather, the second warning sign 401 is switched to provide a warning effect, reduce the wind-receiving area of ​​the warning sign, and prevent the warning sign from being blown off-center or the support rod 103 from being broken by the wind.

[0044] During the reset process of the first tension spring 405, the hydraulic telescopic rod 404 retracts its telescopic end, allowing the hydraulic oil inside to enter the first cylindrical shell 406 through the adjacent conduit. The hydraulic oil pushes the cylindrical plug 407 forward, and the cylindrical plug 407 pushes the rack 408 forward to mesh with the third gear 410. The motor 409 is initially in the off state.

[0045] During the forward movement of the aforementioned cylindrical plug 407, the cylindrical plug 407 compresses the gas inside the first cylindrical shell 406. The gas inside the first cylindrical shell 406 is discharged outward through the vent on it. At this time, the one-way valve on the first cylindrical shell 406 is closed, and the gas inside the first cylindrical shell 406 is slowly discharged through the vent, causing the cylindrical plug 407 to move forward slowly. The slow movement of the cylindrical plug 407 drives the telescopic end of the hydraulic telescopic rod 404 to slowly retract. The telescopic end of the hydraulic telescopic rod 404 drives the support rod 103 to slowly rotate. The support rod 103 slowly rotates and retracts, reducing the impact force during the switching process, thereby reducing wear and increasing the service life of the device.

[0046] After the rack 408 meshes with the third gear 410, when the wind speed decreases to a level that will not blow the first warning sign 104 and cause the device to tip over, the arc-shaped compression spring 509 resets and pushes the second limiting block 507 to reset. The second limiting block 507 drives the first fixing block 2011 to reset. The spring between the locking block 510 and the fixing frame 201 resets and pushes it to move backward. The locking block 510 moves backward into the recess of the first fixing block 2011, re-limiting the first fixing block 2011. The second limiting block 507 drives the second sliding rod 508 to reset. The reset of the second sliding rod 508 drives the first sliding rod 504 to reset through the hydraulic oil in the third cylindrical shell 506. The first sliding rod 504 drives the push block 505 to reset. The reset of the push block 505 releases the limitation on the first limiting block 501. The reset of the second tension spring 502 drives the first limiting block 501 to move downward.

[0047] When the wind speed decreases to a level that prevents the first warning sign 104 from tipping over, the motor 409 is started. The output shaft of the motor 409 drives the third gear 410 to rotate. The rotation of the third gear 410 drives the rack 408 to move backward. The rack 408 pushes the cylindrical plug 407 to move. The cylindrical plug 407 pressurizes the hydraulic oil in the first cylindrical shell 406 through the conduit to the hydraulic telescopic rod 404. The hydraulic oil pushes the telescopic end of the hydraulic telescopic rod 404 to extend outward. The telescopic end of the hydraulic telescopic rod 404 moves outward and stretches the first tension spring 405. The telescopic end of the hydraulic telescopic rod 404 pushes the support rod 103 to reset. The support rod 103 drives the first warning sign 104 to reset. The support rod 103 drives the rotating block 102 to rotate and reset. The rotating block 102 drives the second warning sign 401 to rotate and reset.

[0048] During the backward movement of the aforementioned cylindrical plug 407, when the cylindrical plug 407 contacts the first limiting block 501, the rear end of the cylindrical plug 407 presses the first limiting block 501 upward and stretches the second tension spring 502. After the cylindrical plug 407 moves backward past the first limiting block 501, the second tension spring 502 resets and drives the first limiting block 501 downward. The first limiting block 501 moves downward and re-limits the cylindrical plug 407. When the first limiting block 501 re-limits the cylindrical plug 407, the rack 408 just moves to disengage from the third gear 410. After that, the rotation of the third gear 410 no longer drives the rack 408 to move, and then the motor 409 is turned off.

[0049] When the wind speed increases to a certain level, the first fixing block 2011 releases the limit between itself and the locking block 510, thereby allowing the hydraulic telescopic rod 404 to retract to switch the first warning sign 104 to the second warning sign 401 to provide a warning function, preventing the device from being damaged and losing its warning function due to excessive wind.

[0050] Example 3: As Figure 12 As shown, it also includes a cleaning mechanism 6, which is mounted on the support frame 101. The cleaning mechanism 6 is used to clean dust and dirt from the first warning sign 104. The cleaning mechanism 6 includes a support block 601, which is fixed to the support frame 101. A first bevel gear 602 is rotatably connected to the upper part of the support block 601. The first bevel gear 602 is driven by a pulley and belt to the output shaft of the motor 409. The first warning sign 104 is fixed with symmetrically distributed third fixing blocks 603. The front side of the third fixing block 603 is rotatably connected to the third threaded rod 604. The third threaded rod 604 on the right side is fixedly connected to the second bevel gear 605, which meshes with the first bevel gear 602. The front side of the third fixing block 603 on the left side is fixedly connected to the guide rod 606, which is slidably connected to the scraper 607. The scraper 607 is threadedly connected to the third threaded rod 604. The upper and lower sides of the scraper 607 are both set as inclined surfaces to scrape off dust and dirt on the first warning sign 104.

[0051] When the first warning sign 104 is working normally, the control motor 409 starts intermittently. The output shaft of the motor 409 drives the first bevel gear 602 to rotate through the pulley and belt. The first bevel gear 602 drives the second bevel gear 605 to rotate. The second bevel gear 605 drives the third threaded rod 604 to rotate. The rotation of the third threaded rod 604 drives the scraper 607 to move upward. The scraper 607 moves upward to scrape away the dust and dirt on the surface of the first warning sign 104.

[0052] After the scraper 607 moves upward, the control motor 409 reverses. The output shaft of the motor 409 rotates, driving the first bevel gear 602 to rotate. The first bevel gear 602 drives the second bevel gear 605 to rotate in the opposite direction. The second bevel gear 605 drives the third threaded rod 604 to rotate in the opposite direction. The rotation of the third threaded rod 604 drives the scraper 607 to move downward and reset.

[0053] In windy weather, the first warning sign 104 rotates, causing the third fixing block 603 to rotate. The third fixing block 603 then causes the third threaded rod 604 to rotate, which in turn causes the second bevel gear 605 to rotate, disengaging it from the first bevel gear 602.

[0054] After the wind speed decreases, the first warning sign 104 resets. The rotation of the first warning sign 104 drives the third fixing block 603 to rotate and reset. The third fixing block 603 drives the third threaded rod 604 to rotate and reset. The third threaded rod 604 drives the second bevel gear 605 to rotate and reset so that it re-engages with the first bevel gear 602. The output shaft of the motor 409 drives the first bevel gear 602 to rotate, causing the scraper 607 to move up and down, thereby scraping away the dust and dirt on the surface of the first warning sign 104.

[0055] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A highway safety warning device, characterized in that it includes: A support frame (101) is provided, and a rotating block (102) is rotatably connected to the support frame (101). A support rod (103) is fixedly connected to the rotating block (102). A first warning sign (104) is fixedly connected to the upper end of the support rod (103). A symmetrically distributed rotating shaft (105) is slidably connected inside the support frame (101). The symmetrically distributed rotating shaft (105) is driven by a belt. A first threaded rod (106) is fixedly connected to each of the symmetrically distributed rotating shafts (105). A spline rod (107) is fixedly connected to each of the symmetrically distributed spline rods (107). The symmetrically distributed spline rods (107) are rotatably connected to the support frame (101). The symmetrically distributed first threaded rods (106) are threaded together with a symmetrically distributed counterweight (108). The support frame (101) is provided with a detection mechanism (2) for detecting wind speed. The detection mechanism (2) includes a fixed frame (201), which is fixedly connected to the support frame (101). A first fixed block (2011) is provided inside the fixed frame (201). A columnar rod (202) is rotatably connected to the first fixed block (2011). A fan blade (203) is fixedly connected to the columnar rod (202). A torsion spring (204) is connected between the fan blade (203) and the first fixed block (2011). A rotating rod (205) is rotatably connected to the support frame (101). The rotating rod (205) and the columnar rod (202) are connected by a belt and a... The belt drive is provided. The rotating rod (205) is fixedly connected to the first gear (206). The support frame (101) is fixedly connected to the fixing ring (207). The fixing ring (207) is slidably connected to the spline rod (107). The fixing ring (207) is rotatably connected to the second gear (208). The first gear (206) meshes with the second gear (208). The spline rod (107) near the fixing frame (201) is splinedly connected to the second gear (208). The support frame (101) is provided with an adjustment mechanism (3) for adjusting the initial position of the counterweight (108). The adjustment mechanism (3) includes a second threaded rod (301), which is threaded to the support frame (101). The second threaded rod (301) is rotatably connected to a connecting block (302), and the connecting block (302) is rotatably connected to the adjacent spline rod (107).

2. A highway safety warning device according to claim 1, characterized in that, It also includes a replacement mechanism (4), which is disposed on the rotating block (102). The replacement mechanism (4) is used to replace the warning sign when the wind speed is too high. The replacement mechanism (4) includes a second warning sign (401), which is fixed to the rotating block (102). The second warning sign (401) is fixed with an axially distributed warning light strip (402). The support frame (101) is rotatably connected to a second fixing block (403). The second fixing block (403) is fixed with a hydraulic telescopic rod (404). The telescopic end of the hydraulic telescopic rod (404) is rotatably connected to the support rod (103). A first tension spring (405) is connected between the telescopic end of the hydraulic telescopic rod (404) and the second fixing block (403). The support frame ( 101) A first cylindrical shell (406) is fixedly connected. The first cylindrical shell (406) has an air hole. A one-way valve is provided on the first cylindrical shell (406). The first cylindrical shell (406) and the hydraulic telescopic rod (404) are connected through a conduit. A cylindrical plug (407) is slidably connected inside the first cylindrical shell (406). A rack (408) is fixedly connected to one end of the cylindrical plug (407). A motor (409) is fixedly connected to the upper side of the support frame (101). A third gear (410) is fixedly connected to the output shaft of the motor (409). The third gear (410) meshes with the rack (408). The first cylindrical shell (406) is provided with a measuring mechanism (5) for detecting whether the wind speed has reached the size required to switch to the second warning sign (401).

3. A highway safety warning device according to claim 2, characterized in that, The distance from the rotating block (102) to the telescopic end of the hydraulic telescopic rod (404) is equal to its distance to the second fixed block (403).

4. A highway safety warning device according to claim 3, characterized in that, The measuring mechanism (5) includes a first limiting block (501), which is slidably connected to the first cylindrical shell (406). The first limiting block (501) is in a limiting fit with the cylindrical plug (407). A second tension spring (502) is connected between the first limiting block (501) and the first cylindrical shell (406). A second cylindrical shell (503) is fixedly connected to the first cylindrical shell (406). A first slide rod (504) is slidably connected inside the second cylindrical shell (503). A push block (505) is fixedly connected to one end of the first slide rod (504). The push block (505) is in a pressing fit with the first limiting block (501). The fixing frame (201) is rotatably connected to the first fixing block (2011). A third cylindrical shell (506) is fixedly connected to the fixing frame (201). The third cylindrical shell (506) and the... The second cylindrical shell (503) is filled with hydraulic oil and the two are connected by a conduit. The first fixing block (2011) is fixedly connected to the second limiting block (507). The second limiting block (507) is slidably and rotatably connected to the fixing frame (201). The second limiting block (507) is fixedly connected to the second sliding rod (508). The second sliding rod (508) is slidably connected to the third cylindrical shell (506). An arc-shaped compression spring (509) is connected between the second limiting block (507) and the fixing frame (201). The fixing frame (201) is slidably connected to the locking block (510). The locking block (510) is connected to the fixing frame (201) by a spring. A recessed hole is provided on the side of the first fixing block (2011) away from the fan blade (203). The locking block (510) cooperates with the recessed hole on the first fixing block (2011).

5. A highway safety warning device according to claim 4, characterized in that, The elastic coefficient of the spring connecting the card block (510) and the fixing frame (201) is greater than that of the arc-shaped compression spring (509).

6. A highway safety warning device according to claim 5, characterized in that, The contact point between the first limiting block (501) and the push block (505) is set as an isosceles triangular block, and the push block (505) is provided with an isosceles triangular groove, and the isosceles triangular groove of the push block (505) cooperates with the isosceles triangular block of the first limiting block (501).

7. A highway safety warning device according to claim 6, characterized in that, It also includes a cleaning mechanism (6), which is disposed on the support frame (101). The cleaning mechanism (6) is used to clean dust and dirt on the first warning sign (104). The cleaning mechanism (6) includes a support block (601), which is fixedly connected to the support frame (101). The support block (601) is rotatably connected to a first bevel gear (602). The first bevel gear (602) is driven by a pulley and a belt to the output shaft of the motor (409). The first warning sign (104) is fixedly connected to symmetrically distributed third fixed... The third fixed block (603) near the support block (601) is rotatably connected to a third threaded rod (604). The third threaded rod (604) near the support block (601) is fixedly connected to a second bevel gear (605). The second bevel gear (605) meshes with the first bevel gear (602). The third fixed block (603) away from the support block (601) is fixedly connected to a guide rod (606). The guide rod (606) is slidably connected to a scraper (607). The scraper (607) is threadedly connected to the third threaded rod (604).

8. A highway safety warning device according to claim 7, characterized in that, The scraper (607) has beveled surfaces on both the top and bottom.

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