A device and method for loading and unloading scrap steel plates for road engineering

Abstract

The present invention belongs to the field of road engineering technology, and in particular, is a device for loading and unloading scrap steel plates for road engineering and a method for loading and unloading the same. In view of the time-consuming and labor-intensive problem in the prior art of scrap steel plate recycling requiring the use of an excavator for lifting, the following solution is proposed, comprising a trolley base, a hydraulic telescopic rod being fixed to the rear end or side of the trolley base by bolts, and a sleeve plate being fixed to the circumferential outer wall of the extension rod of the hydraulic telescopic rod near the top, two screw holes being provided on the upper surface of the extension rod of the sleeve plate near both ends, a T-shaped slider being placed at the top of the extension rod of the hydraulic telescopic rod, and a hinge groove being provided at the top of the T-shaped slider, in which a fixed plate is rotatably connected. During use, the present invention allows the head of the steel plate to pass smoothly over the top of the scraper blade, and under the action of the compression spring, the top edge of the scraper blade is brought into close contact with the bottom surface of the steel plate to scrape away the dirt on its surface.

Description

Technical Field

[0001] The present invention relates to the technical field of road engineering, and in particular to a device for loading and unloading scrap steel plates for road engineering and a loading and unloading method thereof. Background Art

[0002] Among steel plate lifting tools, electromagnet suction lifting is widely used. However, existing electromagnet lifting tools have safety issues due to the lack of protective measures. The safety performance during the steel plate lifting process cannot be further guaranteed. In addition, most steel plates on construction sites are used to be laid on muddy ground for the normal movement of transport vehicles. After a long period of operation, most steel plates will be stuck in the mud, which is particularly time-consuming and labor-intensive to retrieve.

[0003] Most of the existing steel plate lifting devices use an excavator to first hook up the steel plate stuck in the soil, and then use the lifting equipment and rope to safely place the steel plate on the transport vehicle. This construction method has high transportation costs. Secondly, there is a lot of soil on the surface of the steel plate when it is hooked up. If it is not processed, it will aggravate the corrosion of the steel plate in the later stage and the transportation weight. Therefore, a new type of steel plate loading and unloading device that comes with the transport vehicle is needed to reduce loading and unloading costs. Summary of the Invention

[0004] In order to overcome the problem in the prior art that scrap steel plates need to be hoisted with an excavator, which is time-consuming and labor-intensive, the present invention provides a scrap steel plate loading and unloading device for road engineering and a loading and unloading method thereof.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a scrap steel plate loading and unloading device for road engineering, comprising a trolley base, a hydraulic telescopic rod is fixed to the tail end or side of the trolley base by bolts, and a sleeve plate is fixed near the top of the circumferential outer wall of the hydraulic telescopic rod extension rod, and two screw holes are opened near the two ends of the upper surface of the sleeve plate, a T-shaped slider is placed on the top of the hydraulic telescopic rod extension rod, and a hinge groove is opened at the top of the T-shaped slider, a fixed plate is rotatably connected in the hinge groove, and a bearing plate is welded to the top of the fixed plate, and roller grooves distributed at equal distances are opened on the upper surface of the bearing plate, and rollers are rotatably connected in the roller grooves, so that when the steel plate is supported to the upper surface of the bearing plate during use, the sliding friction can be changed to rolling friction when it is continued to be supported, which is more labor-saving when dragging, and the upper surface of the bearing plate A rectangular mounting groove is provided near the top, and a scraper is rotatably connected to the bottom of the rectangular mounting groove. Protrusions distributed at equal distances are welded on the lower surface of the scraper, and the outer walls of the protrusions are sleeved with compression springs. The edge of the end of the upper surface of the scraper away from the hinge point is arranged into an arc-shaped upward structure, so that during use, when the head of the steel plate passes by, it can smoothly pass through the top of the scraper, and under the action of the compression spring, the top edge of the scraper is tightly contacted with the lower surface of the steel plate to scrape off the dirt on its surface. A support frame is fixed to the end of the upper surface of the trolley base away from the hydraulic telescopic rod, and a rope winder is fixed to the top of the support frame. A pull rope is provided at the rope output end of the rope winder, and a hook is fixed to the end of the pull rope away from the rope winder, and the hook is adapted to the size of the opening on the corner of the steel plate body.

[0006] As a preferred solution in the present invention, a screw hole 1 is opened on the side of the T-shaped slider close to the trolley base, and a flared opening is reserved at the opening of the end of the screw hole 1 close to the trolley base, a grooved track is fixed to the end of the upper surface of the trolley base close to the screw hole 1, and a servo motor is fixed to the end of the groove bottom of the grooved track away from the hydraulic telescopic rod, and a transmission screw is fixed to the top end of the output shaft of the servo motor through a coupling, so that when the device is in use and has not yet loaded and unloaded the steel plate, the screw hole 1 on the side of the T-shaped slider can be connected to the transmission screw, and then the T-shaped slider can be dragged together with the load-bearing plate to the top of the trolley base by starting the servo motor.

[0007] As a preferred solution in the present invention, a slot is provided on the side of the T-shaped slider close to the grooved track, which is located obliquely above the grooved track, and a baffle strip is clamped in the slot. Both ends of the baffle strip are provided with arc-shaped bayonet holes on the side away from the T-shaped slider. A fixed column is welded on the upper surface of the grooved track, which is located directly below the axial center line of the two arc-shaped bayonet holes, and a stud with a diameter smaller than the outer diameter of the fixed column is welded to the top of the fixed column.

[0008] As a preferred solution in the present invention, the upper surfaces of both shoulders of the T-shaped slider are provided with corresponding screw holes three with the same aperture near the upper side of the screw hole two, and both screw holes three are screwed with fastening bolts, which serve as pins and connecting rods. Notches are provided on the upper and lower surfaces of the T-shaped slider near the four corners, and micro rollers are rotatably connected to the notches.

[0009] As a preferred solution in the present invention, roller grooves are opened on the upper surface of the supporting plate near both ends, and shafts are rotatably connected in the roller grooves, and the outer walls of the shafts are sleeved with guide rope wheels, and the circumferential outer walls of the guide rope wheels are reserved with rope grooves, and the bottoms of the rope grooves are reserved with staggered protrusions on both sides, so that the friction between the rope and the inner wall of the rope groove can be increased during use, thereby avoiding falling off during the pulling process and avoiding direct contact between the pull rope and the edge of the supporting plate.

[0010] As a preferred solution in the present invention, ribs that are equally spaced and parallel to each other are fixed to the lower surface of the bearing plate, and the ribs are welded to the lower surface of the bearing plate.

[0011] As a preferred solution in the present invention, the bottom end of the supporting plate is provided with a strip-shaped notch near the front and rear ends, and the inner walls on both sides of the strip-shaped notch are provided with a long strip-shaped dark groove, and the two dark grooves are slidably connected with an axis clamping seat, and the two axis clamping seats are rotatably connected to the same buckle plate device, and a reset spring is provided between the outer wall of the two axis clamping seats and the end of the dark groove.

[0012] As a preferred solution in the present invention, the distance between one end of the upper surface of the gusset plate close to the ground and the rotation center is smaller than the distance between the other end and the rotation center, and an anti-slip pad is fixed to the end of the upper surface of the gusset plate close to the ground.

[0013] A method for loading and unloading scrap steel plates for road engineering, comprising the following steps:

[0014] Step 1: First, select the loading method of the trolley base according to the ground conditions near the paving steel plate. If it is not possible to recycle from the side of the paving steel plate, install a hydraulic telescopic rod at the rear end of the trolley base to collect the steel plate in reverse.

[0015] Step 2: At this time, tilt one end of the trolley base with the hydraulic telescopic rod to the vicinity of the last steel plate, and then put the lower part of the load-bearing plate into place so that the bottom end of the load-bearing plate is close to the end edge of the steel plate to be recycled, and then use the hook at the end of the pull rope to hook the corner of the cleaned steel plate on the upper surface;

[0016] Step 3: Then slide the plate gusset downwards until the bottom end of the plate gusset is obliquely inserted under the end of the steel plate, and then apply downward force from the upper surface of the plate gusset away from the end of the steel plate until the end of the steel plate slowly lifts up and separates from the ground;

[0017] Step 4: Then turn on the rope winder and slowly drag the steel plate upward along the surface of the carrier plate until it is dragged to the upper surface of the trolley base. When the steel plate is dragged upward, its muddy lower surface will pass through the scraper near the top of the upper surface of the carrier plate. At this time, the scraper will slowly scrape off as much mud as possible on its lower surface.

[0018] In summary, the beneficial effects of this solution are:

[0019] 1. This scrap steel plate loading and unloading device for road engineering uses a scraper blade hinged in a rectangular mounting slot and a compression spring on the lower surface of the scraper blade. During use, when the head of the steel plate passes by, it can smoothly pass over the top of the scraper blade. Under the action of the compression spring, the top edge of the scraper blade tightly contacts the lower surface of the steel plate to scrape away the dirt on its surface.

[0020] 2. The device for loading and unloading scrap steel plates for road engineering uses a transmission screw and a screw hole with a flared opening on the side of the T-shaped slider. When the device is in use and the steel plates are not being loaded or unloaded, the screw hole on the side of the T-shaped slider can be docked with the transmission screw. Then, the servo motor can be started to drag the T-shaped slider together with the load plate to the top of the trolley base.

[0021] 3. This scrap steel plate loading and unloading device for road engineering uses baffle strips and matching support posts set on the sides of the T-shaped slider. When the hydraulic telescopic rod drives the T-shaped slider to rise, sleeves can be screwed onto the studs to increase the height of the two support posts. This ensures that the sides of the T-shaped slider always have support, which to a certain extent protects the extension rod of the hydraulic telescopic rod from being broken when subjected to radial force.

[0022] 4. The scrap steel plate loading and unloading device for road engineering is equipped with a gusset device that is slidably connected to the strip-shaped notch. When in use, when the bottom end of the load-bearing plate is below the edge of the steel plate close to the ground, if the steel plate is too tightly adsorbed on the ground, the gusset device needs to be activated. At this time, first insert the bottom end of the gusset device under the edge of the steel plate, and then apply force downward from the upper surface of the other end of the gusset device to lift the steel plate. At the same time, start the rope winder to smoothly drag the steel plate to the upper surface of the load-bearing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic cross-sectional view of a device for loading and unloading scrap steel plates for road engineering proposed by the present invention;

[0024] Figure 2 This is a partial cross-sectional structural diagram of a load-bearing plate in a device for loading and unloading scrap steel plates for road engineering proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the assembly structure of a T-shaped slider in a scrap steel plate loading and unloading device for road engineering proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the assembly structure of a plate gusset for a scrap steel plate loading and unloading device for road engineering proposed by the present invention;

[0027] Figure 5 A waste steel plate loading and unloading device for road engineering proposed by the present invention Figure 1 Schematic diagram of the enlarged structure of the middle scraper.

[0028] In the figure: 1 trolley base, 2 transmission screw, 3 hydraulic telescopic rod, 301 sleeve plate, 302 fastening bolt, 3021 screw hole 2, 4 screw hole 1, 5 T-shaped slider, 501 slot, 502 hinge slot, 6 strip notch, 601 hidden slot, 7 plate buckle, 701 anti-slip pad, 8 rotating shaft, 801 shaft holder, 802 return spring, 9 hook, 10 roller, 1001 roller slot, 11 bearing plate, 12 rectangular mounting slot, 13 scraper, 14 compression spring, 15 roller slot, 16 guide rope pulley, 17 fixed column, 18 baffle strip, 1801 arc-shaped bayonet, 19 pull rope, 20 rope winding machine, 21 support frame, 22 grooved track. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0031] In this embodiment

[0032] Reference Figure 1-5A device for loading and unloading scrap steel plates for road engineering, comprising a trolley base 1, a hydraulic telescopic rod 3 being fixed to the tail end or side of the trolley base 1 by bolts, and a sleeve plate 301 being fixed to the outer circumference of the extension rod of the hydraulic telescopic rod 3 near the top, and a screw hole 3021 being opened on the upper surface of the sleeve plate 301 near both ends, a T-shaped slider 5 being placed on the top of the extension rod of the hydraulic telescopic rod 3, and a hinge groove 502 being opened on the top of the T-shaped slider 5, a fixed plate being rotatably connected in the hinge groove 502, and a bearing plate 11 being welded to the top of the fixed plate, and the upper surface of the bearing plate 11 being opened with equidistant screw holes. The roller grooves 1001 are distributed, and the rollers 10 are rotatably connected in the roller grooves 1001, so that when the steel plate is supported to the upper surface of the carrier plate 11 during use, the sliding friction can be changed to rolling friction by continuing to support it, which is more labor-saving when dragging. A rectangular mounting groove 12 is opened near the top of the upper surface of the carrier plate 11, and a scraper 13 is rotatably connected to the bottom of the rectangular mounting groove 12. The lower surface of the scraper 13 is welded with equidistantly distributed protrusions, and the outer walls of the protrusions are all sleeved with compression springs 14. The edge of the upper surface of the scraper 13 away from the hinge point is set into an arc-shaped upward structure.

[0033] During use, when the head of the steel plate passes by, it can smoothly pass through the top of the scraper 13, and under the action of the compression spring 14, the top edge of the scraper 13 is tightly in contact with the lower surface of the steel plate to scrape off the dirt on its surface. The upper surface of the trolley base 1 is fixed with a support frame 21 at one end away from the hydraulic telescopic rod 3, and a rope winder 20 is fixed to the top of the support frame 21. The rope output end of the rope winder 20 is provided with a pull rope 19, and the end of the pull rope 19 away from the rope winder 20 is fixed with a hook 9, and the hook 9 is adapted to the size of the opening opened on the corner of the steel plate body.

[0034] In the present invention, a screw hole 4 is opened on the side of the T-shaped slider 5 close to the trolley base 1, and a flared opening is reserved at the opening of the end of the screw hole 4 close to the trolley base 1. A grooved track 22 is fixed to the end of the upper surface of the trolley base 1 close to the screw hole 4, and a servo motor is fixed to the end of the groove bottom of the grooved track 22 away from the hydraulic telescopic rod 3, and a transmission screw 2 is fixed to the top of the output shaft of the servo motor through a coupling, so that when the device is in use and has not yet loaded and unloaded the steel plate, the screw hole 4 on the side of the T-shaped slider 5 can be connected to the transmission screw, and then the T-shaped slider 5 can be dragged together with the load-bearing plate 11 to the top of the trolley base 1 by starting the servo motor.

[0035] Furthermore, a slot 501 is provided on the side of the T-shaped slider 5 close to the grooved track 22, which is located obliquely above the grooved track 22, and a baffle strip 18 is clamped in the slot 501. Both ends of the baffle strip 18 are provided with arc-shaped bayonet holes 1801 on the side away from the T-shaped slider 5. The upper surface of the grooved track 22 is located directly below the axis of the two arc-shaped bayonet holes 1801 and is welded with a fixed support column 17, and the top of the fixed support column 17 is welded with a stud with a diameter smaller than the outer diameter of the fixed support column 17. Therefore, when in use, when the hydraulic telescopic rod 3 drives the T-shaped slider 5 to rise, the height of the two support columns 17 can be increased by screwing a sleeve on the stud, so that the side of the T-shaped slider 5 always has support, which protects the extension rod of the hydraulic telescopic rod 3 to a certain extent and avoids being broken when radial force is applied.

[0036] Furthermore, the upper surfaces of the two shoulders of the T-shaped slider 5 are provided with corresponding screw holes three with the same aperture near the upper side of the screw hole two 3021, and the two screw holes three are both screwed with fastening bolts 302, which serve as pins and connecting rods. The upper and lower surfaces of the T-shaped slider 5 are provided with notches near the four corners, and micro rollers are rotatably connected to the notches.

[0037] Furthermore, roller grooves 15 are provided on the upper surface of the supporting plate 11 near both ends, and shafts are rotatably connected in the roller grooves 15. The outer walls of the shafts are sleeved with guide rope wheels 16, and the circumferential outer walls of the guide rope wheels 16 are reserved with rope grooves. The bottom of the rope grooves is reserved with staggered protrusions on both sides, so that the friction between the rope grooves and the inner walls can be increased during use, thereby avoiding falling off during the pulling process and avoiding direct contact between the pull rope and the edge of the supporting plate 11.

[0038] Furthermore, ribs that are equally spaced and parallel to each other are fixed to the lower surface of the supporting plate 11 , and the ribs are welded to the lower surface of the supporting plate 11 .

[0039] Furthermore, the bottom end of the supporting plate 11 is provided with a strip-shaped notch 6 near the front and rear ends, and the inner walls on both sides of the strip-shaped notch 6 are provided with a long strip-shaped dark groove 601, and the two dark grooves 601 are slidably connected with an axis clamp 801, and the two axis clamps 801 are rotatably connected to the same plate clamp 7, and a return spring 802 is provided between the outer wall of the two axis clamps 801 and the end of the dark groove 601, so that when in use, when the bottom end of the supporting plate 11 is below the ground and close to the edge of the steel plate on the ground, if the steel plate is adsorbed too tightly on the ground, it is necessary to activate the plate clamp 7. At this time, first insert the bottom end of the plate clamp 7 under the edge of the steel plate, and then apply force downward from the upper surface of the other end of the plate clamp 7 to lift the steel plate. At the same time, start the rope winding machine to smoothly drag the steel plate to the upper surface of the supporting plate 11.

[0040] Furthermore, the distance between one end of the upper surface of the plate gusset 7 close to the ground and the rotation center is smaller than the distance between the other end and the rotation center, and an anti-slip pad 701 is fixed to the end of the upper surface of the plate gusset 7 close to the ground.

[0041] Before loading the side steel plates, first place the load-bearing plate 11 obliquely downward on the side edge of the steel plate, then pull out the pull rope 19 on the rope winder 20, and pass the hook 9 over the guide rope wheel 16 to hook it at the corner of the steel plate, and then use the plate buckle 7 to lift the side of the steel plate close to the load-bearing plate 11, and then pull the steel plate.

[0042] A method for loading and unloading scrap steel plates for road engineering, comprising the following steps:

[0043] Step 1: First, select the loading method of the trolley base according to the ground conditions near the paving steel plate. If it is not possible to recycle from the side of the paving steel plate, install a hydraulic telescopic rod at the rear end of the trolley base to collect the steel plate in reverse.

[0044] Step 2: At this time, tilt one end of the trolley base with the hydraulic telescopic rod to the vicinity of the last steel plate, and then put the lower part of the load-bearing plate into place so that the bottom end of the load-bearing plate is close to the end edge of the steel plate to be recycled, and then use the hook at the end of the pull rope to hook the corner of the cleaned steel plate on the upper surface;

[0045] Step 3: Then slide the plate gusset downwards until the bottom end of the plate gusset is obliquely inserted under the end of the steel plate, and then apply downward force from the upper surface of the plate gusset away from the end of the steel plate until the end of the steel plate slowly lifts up and separates from the ground;

[0046] Step 4: Then turn on the rope winder and slowly drag the steel plate upward along the surface of the carrier plate until it is dragged to the upper surface of the trolley base. When the steel plate is dragged upward, its muddy lower surface will pass through the scraper near the top of the upper surface of the carrier plate. At this time, the scraper will slowly scrape off as much mud as possible on its lower surface.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for loading and unloading scrap steel plates for road engineering, comprising a trolley base (1), a hydraulic telescopic rod (3) being fixed to the rear end or side of the trolley base (1) by bolts, and a sleeve plate (301) being fixed to the circumferential outer wall of the extension rod of the hydraulic telescopic rod (3) near the top, the upper surface of the sleeve plate (301) being provided with two screw holes (3021) near both ends, a T-shaped slider (5) being placed at the top end of the extension rod of the hydraulic telescopic rod (3), and a hinge groove (502) being provided at the top end of the T-shaped slider (5), a fixed plate being rotatably connected in the hinge groove (502), and a bearing plate (11) being welded to the top end of the fixed plate, characterized in that: The upper surface of the carrier plate (11) is provided with roller grooves (1001) distributed at equal distances, and a roller (10) is rotatably connected in the roller groove (1001), the upper surface of the carrier plate (11) is provided with a rectangular mounting groove (12) near the top, and a scraper (13) is rotatably connected to the bottom of the rectangular mounting groove (12), the lower surface of the scraper (13) is welded with protrusions distributed at equal distances, and the outer walls of the protrusions are sleeved with compression springs (14), the edge of the end of the upper surface of the scraper (13) away from the hinge point is set into an arc-shaped upward-warping structure, the upper surface of the trolley base (1) is fixed with a support frame (21) at one end away from the hydraulic telescopic rod (3), and a rope winding machine (20) is fixed to the top of the support frame (21), and a pull rope (19) is provided at the rope outlet end of the rope winding machine (20), and the pull rope (1 9) A hook (9) is fixed at one end away from the rope winding machine (20), and the hook (9) is adapted to the size of the opening opened on the corner of the steel plate body. The bottom end of the supporting plate (11) is provided with a strip-shaped notch (6) near the front and rear ends, and the inner walls on both sides of the strip-shaped notch (6) are provided with a long strip-shaped dark groove (601), and the two dark grooves (601) are slidably connected with an axis clamp (801), and the same plate clamp (7) is rotatably connected between the two axis clamps (801), and a return spring (802) is provided between the outer walls of the two axis clamps (801) and the end of the dark groove (601), the distance between the end of the upper surface of the plate clamp (7) close to the ground and the rotation center is smaller than the distance between the other end and the rotation center, and the end of the upper surface of the plate clamp (7) close to the ground is fixed with an anti-slip pad (701).

2. The device for loading and unloading scrap steel plates for road engineering according to claim 1, characterized in that: A screw hole (4) is provided on one side of the T-shaped slider (5) close to the trolley base (1), and a flared opening is reserved at the opening of the screw hole (4) close to the trolley base (1). A grooved track (22) is fixed to the end of the upper surface of the trolley base (1) close to the screw hole (4), and a servo motor is fixed to the end of the groove bottom of the grooved track (22) away from the hydraulic telescopic rod (3), and a transmission screw (2) is fixed to the top end of the output shaft of the servo motor through a coupling.

3. The device for loading and unloading scrap steel plates for road engineering according to claim 2, characterized in that: A slot (501) is provided on the side of the T-shaped slider (5) close to the grooved track (22) and located obliquely above the grooved track (22), and a baffle strip (18) is clamped in the slot (501), and arc-shaped bayonet holes (1801) are provided on both ends of the baffle strip (18) away from the side of the T-shaped slider (5), and a fixed support column (17) is welded on the upper surface of the grooved track (22) just below the axis of the two arc-shaped bayonet holes (1801), and a stud with a diameter smaller than the outer diameter of the fixed support column (17) is welded on the top of the fixed support column (17).

4. The device for loading and unloading scrap steel plates for road engineering according to claim 3, characterized in that: The upper surfaces of the two shoulders of the T-shaped slider (5) are provided with corresponding screw holes (3021) above the screw holes (3021), and the two screw holes (302) are both screwed with fastening bolts (302) to serve as pins and connecting rods. The upper and lower surfaces of the T-shaped slider (5) are provided with notches near the four corners, and the notches are rotatably connected to micro rollers.

5. The device for loading and unloading scrap steel plates for road engineering according to claim 1, characterized in that: The upper surface of the bearing plate (11) is provided with roller grooves (15) near both ends, and shafts are rotatably connected in the roller grooves (15). The outer walls of the shafts are sleeved with guide rope wheels (16), and the circumferential outer walls of the guide rope wheels (16) are reserved with rope grooves, and staggered protrusions are reserved on both sides of the bottom of the rope grooves.

6. The device for loading and unloading scrap steel plates for road engineering according to claim 1, characterized in that: Rib plates that are distributed at equal distances and are parallel to each other are fixed to the lower surface of the bearing plate (11), and the rib plates are welded to the lower surface of the bearing plate (11).

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