Electric flatbed truck for lifting and installing curbstones

Abstract

The present invention discloses an electric flatbed truck for lifting and installing curbstones in the field of road engineering technology, comprising a flatbed truck, wherein the front position of the bottom of the flatbed truck is rotatably connected to two driving wheels and the rear position is rotatably connected to two steering wheels; a steering mechanism is provided on the rear surface of the flatbed truck; a support seat and a buffer seat are fixedly connected to the front and rear positions of the upper surface of the flatbed truck respectively, a crossbeam is provided on the upper side of the support seat and the buffer seat, a lifting mechanism is provided on the front side of the crossbeam, the lifting mechanism is used to automatically clamp the curbstone when it is needed to lift the curbstone and loosen the curbstone when it is needed to put down the curbstone; a first driving mechanism is provided on the rear side of the crossbeam, the first driving mechanism is used to drive the lifting mechanism to lift or put down the curbstone in a more labor-saving manner; the device is simple to operate and easy to use, can be operated by one person to lift and lay the curbstone, and the operation is quick and labor-saving, which can effectively save manpower and improve the efficiency of laying the curbstone.

Description

Technical Field

[0001] The invention relates to the technical field of road engineering, in particular to an electric flatbed truck for hoisting and installing curbstones. Background Art

[0002] Curbstones are marker stones placed between the road surface and other structures. They are generally installed between the median and the road surface, and between the sidewalk and the road surface on urban roads. Curbstones are often installed at the edge of the central median, the right edge of the driving lane, or the outer edge of the shoulder.

[0003] During the installation of road and pavement curbstones in building and road construction, manual transportation and installation are generally carried out. Manual operation is subject to factors such as the curbstones being too heavy for one person to handle, the use of clamps requiring tacit cooperation between workers, and slow handling and installation speed. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric flatbed truck for lifting and installing curbstones to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an electric flatbed truck for lifting and installing curbstones, comprising a flatbed truck, wherein the front bottom position of the flatbed truck is rotatably connected to two driving wheels and the rear bottom position is rotatably connected to two steering wheels; a steering mechanism is provided on the rear surface of the flatbed truck, and the steering mechanism is used to drive the two steering wheels to steer synchronously; a support seat and a buffer seat are respectively fixedly connected to the front and rear sides of the upper surface of the flatbed truck, a crossbeam is provided on the upper side of the support seat and the buffer seat, a lifting mechanism is provided in front of the crossbeam, and the lifting mechanism is used to automatically clamp the curbstone when the curbstone needs to be lifted and to loosen the curbstone when the curbstone needs to be lowered; a first driving mechanism is provided on the rear side of the crossbeam, and the first driving mechanism is used to drive the lifting mechanism to lift or lower the curbstone more labor-savingly.

[0006] The two cams are connected to each other by a spring, and the two cams are connected to each other by a spring, and the two cams are connected to each other by a spring.

[0007] The expansion mechanism includes two connecting plates, which are symmetrically distributed on the left and right sides of the connecting block, and are fixedly connected to the connecting block; a first telescopic rod is fixedly connected to the bottom surface of the connecting plate, and the bottom end of the first telescopic rod is rotatably connected to a second connecting rod, and the other ends of the second connecting rods on the left and right sides are rotatably connected to the front part of the left rotating frame and the rear part of the right rotating frame respectively.

[0008] The cam is secured to the front of the drive mechanism and is adapted to engage the driver and detent, and the cam is secured to the front of the drive mechanism and is adapted to engage the driver and detent.

[0009] The front surface of the crossbeam is slidably connected to a sliding frame, and the bottom of the sliding frame is rotatably connected to the connecting block; fixed rods are symmetrically fixedly connected to the left and right sides of the front side of the upper surface of the flatbed truck, and the surface of the fixed rod is slidably connected to a third connecting rod, and the front end of the third connecting rod is slidably connected to the sliding frame.

[0010] The first driving mechanism includes a rotating shaft, which is rotatably connected to the support seat and fixedly connected to the crossbeam; a rubber pad is fixedly connected to the upper surface of the support seat, and the rubber pad is in contact with the crossbeam; a seat bag is provided at the rear side of the upper surface of the crossbeam, and the seat bag is fixedly connected to the crossbeam; a pedal is fixedly connected to the rear surface of the flatbed truck, and the pedal is located in the front and lower position of the seat bag.

[0011] The upper surface of the flatbed truck is symmetrically connected to the second telescopic rod on the left and right sides of the beam, the other end of the second telescopic rod is rotatably connected to the beam and a spring is sleeved on the surface of the second telescopic rod, the bottom end of the spring is fixedly connected to the bottom part of the second telescopic rod and the upper end of the spring is fixedly connected to the upper part of the second telescopic rod.

[0012] The steering mechanism includes a steering rod, which passes through the crossbeam and is rotatably connected to the pedal; a gear is fixedly connected to the bottom end of the steering rod, and a first rack is engaged on the front surface of the gear. The first rack is slidingly connected to the flatbed truck and the left and right ends of the first rack are symmetrically fixedly connected to the second rack, and the front surface of the second rack is engaged with an incomplete gear, and the incomplete gear is fixedly connected to the steering wheel and the steering shaft of the flatbed truck.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can drive the flatbed truck to move by starting the driving wheels of the flatbed truck. When the flatbed truck moves, the flatbed truck can be driven to move to the position of transporting the curb stone in cooperation with the steering mechanism. When the flatbed truck is at the transporting position, the first driving mechanism is started at this time, and the crossbeam can be driven by the first driving mechanism to drive the lifting mechanism to move downward. When the lifting mechanism moves downward to the position where the curb stone can be clamped, the driving of the lifting mechanism is stopped and the lifting mechanism is started at the same time. The curb stone can be automatically clamped by the lifting mechanism. After the curb stone is clamped, the first driving mechanism is driven again to drive the lifting mechanism to move upward. At this time, the lifting mechanism It will drive the curbstone to move upward and off the ground, and then start the driving wheel and cooperate with the steering mechanism to drive the flatbed truck to move. When the flatbed truck drives the curbstone to the paving position, the first driving mechanism is started to drive the lifting mechanism and the curbstone to move downward to the paving position, and then the lifting mechanism can be started to loosen the curbstone. After the lifting mechanism loosens the curbstone, the first driving mechanism is started to drive the lifting mechanism to reset. At this time, the curbstone is paved. The device is simple to operate and easy to use. One person can operate the lifting and laying of the curbstone. At the same time, the operation is quick and labor-saving, which can effectively save manpower and improve the efficiency of curbstone paving.

[0015] When the second rotating disk is in contact with the first rotating disk, the second rotating disk can drive the first rotating disk to rotate so that the blocking rod on the surface of the first rotating disk rotates to the bottom position of the baffle; when the baffle is reset, it will be blocked When the first telescopic rod is reset again, the splint will not be stretched open, so that the curb can be automatically clamped when the splint moves upward, which can further save manpower and improve the efficiency of curb transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the split structure of the present invention;

[0019] Figure 4 Schematic diagram of the structure of the steering mechanism of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the lifting mechanism in the present invention;

[0021] Figure 6 It is a structural schematic diagram of the second driving mechanism in the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Flatbed car; 2. Driving wheel; 3. Steering wheel; 4. Support seat; 5. Buffer seat; 6. Crossbeam; 7. Connecting block; 8. First connecting rod; 9. Rotating frame; 10. Clamp; 11. Connecting plate; 12. First telescopic rod; 13. Second connecting rod; 14. Fixed plate; 15. Ratchet; 16. Pawl; 17. First rotating disk; 18. Second rotating disk; 19. Baffle; 20. Slot; 21. Baffle; 22. Driving rod; 23. Torsion spring; 24. Block; 25. Sliding frame; 26. Fixed rod; 27. Third connecting rod; 28. Rotating shaft; 29. ​​Rubber pad; 30. Seat; 31. Pedal; 32. Second telescopic rod; 33. Spring; 34. Steering rod; 35. Gear; 36. First rack; 37. Second rack; 38. Incomplete gear. DETAILED DESCRIPTION

[0024] See also Figures 1-6 The present invention provides a technical solution: an electric flatbed truck for lifting and installing curbstones, comprising a flatbed truck 1, wherein the front position of the bottom of the flatbed truck 1 is rotatably connected to two driving wheels 2 and the rear position is rotatably connected to two steering wheels 3; a steering mechanism is provided on the rear surface of the flatbed truck 1, and the steering mechanism is used to drive the two steering wheels 3 to steer synchronously; a support seat 4 and a buffer seat 5 are respectively fixedly connected to the front and rear positions of the upper surface of the flatbed truck 1, a crossbeam 6 is provided on the upper side of the support seat 4 and the buffer seat 5, and a lifting mechanism is provided in front of the crossbeam 6. The lifting mechanism is used to automatically clamp the curbstone when it is needed to lift the curbstone and release the curbstone when it is needed to lower the curbstone; a first driving mechanism is provided at the rear position of the crossbeam 6, and the first driving mechanism is used to drive the lifting mechanism to lift or lower the curbstone with relatively less effort;

[0025] During work, the installation of roads and paved curbstones in building construction and road construction is basically carried out manually. Manual operation has the following problems: the curbstone is too heavy for one person to operate, the use of clamps requires tacit cooperation between workers, and the handling and installation speed is slow. The device can drive the flatbed trolley 1 to move by starting the driving wheel 2 of the flatbed trolley 1. When the flatbed trolley 1 moves, the steering mechanism can drive the flatbed trolley 1 to the position for transporting the curbstone. When the flatbed trolley 1 is in the transporting position, the first driving mechanism is started, and the crossbeam 6 can be driven by the first driving mechanism to drive the lifting mechanism to move downward. When the lifting mechanism moves downward to the position where the curbstone can be clamped, the driving of the lifting mechanism is stopped and the lifting mechanism is started at the same time. The curbstone can be automatically clamped by the lifting mechanism. When the curbstone is clamped, the device drives the crossbeam 6 to move downward ... The first driving mechanism drives the lifting mechanism to move upward, and at this time the lifting mechanism will drive the curbstone to move upward and off the ground, and then start the driving wheel 2 and cooperate with the steering mechanism to drive the flatbed truck 1 to move. When the flatbed truck 1 drives the curbstone to the laying position, the first driving mechanism is started to drive the lifting mechanism and the curbstone to move downward to the laying position, and then the lifting mechanism can be started to loosen the curbstone. After the lifting mechanism loosens the curbstone, the first driving mechanism is started to drive the lifting mechanism to reset, and the curbstone is now laid. The device is simple to operate and easy to use. One person can operate the lifting and laying of the curbstone. At the same time, the operation is quick and labor-saving, which can effectively save manpower and improve the efficiency of curbstone laying.

[0026] As a further solution of the present invention, the lifting mechanism includes a connecting block 7, which has two first connecting rods 8 symmetrically connected to the front and rear positions of the connecting block 7, and two rotating frames 9 are provided on the left and right sides of the bottom of the connecting block 7. The two rotating frames 9 are cross-arranged and the two rotating frames 9 are connected to each other at the cross position; the two first connecting rods 8 on the front and rear sides are respectively connected to the front end of the right rotating frame 9 and the rear end of the left rotating frame 9; the bottom positions of the two rotating frames 9 are fixedly connected with a splint 10, and the side of the surface of the two splints 10 close to each other is provided with anti-slip grooves; the surface of the connecting block 7 is provided with an opening mechanism, which is used to open the splints 10 on the front and rear sides so that the two splints 10 move to the bottom side position. When the two clamps 10 are in the position of being able to clamp the curb, the curb can be located between the two clamps 10; a second driving mechanism is provided on the surface of the connecting block 7, which is used to drive the spreading mechanism to loosen the two clamps 10 when the two clamps 10 move to the position where they can clamp the curb, and when the clamps 10 hoist the curb to the installation position, the spreading mechanism is driven to spread the two clamps 10; during operation, when the flatbed trolley moves to the hoisting position, the two clamps 10 are now directly above the curb, and the front and rear clamps 10 can be spread apart by the spreading mechanism, so that the distance between the front and rear clamps 10 is greater than the thickness of the curb; at this time, the first driving mechanism is started, and the connecting block 7 can be driven downward by the first driving mechanism. When the two first links 8 on the front and rear sides rotate downward, the rear end portion of the left rotating frame 9 and the front end portion of the right rotating frame 9 will be driven to rotate upward relative to the intersection of the two rotating frames 9, so that the two splints 10 on the front and rear sides can be moved to a position close to each other. When the plywood 10 clamps the curb, the flatbed truck 1 drives the curb to move to the paving position, and then starts the first driving mechanism to drive the plywood 10 to lower the curb. When the curb is lowered, the second driving mechanism drives the opening mechanism to open the plywood 10 on the front and rear sides, so that the plywood 10 on the front and rear sides release the curb.

[0027] As a further solution of the present invention, the spreading mechanism includes two connecting plates 11, which are symmetrically distributed on the left and right sides of the connecting block 7, and the two connecting plates 11 are fixedly connected to the connecting block 7; the bottom surface of the connecting plate 11 is fixedly connected to the first telescopic rod 12, and the bottom end of the first telescopic rod 12 is rotatably connected to the second connecting rod 13, and the other ends of the second connecting rods 13 on the left and right sides are rotatably connected to the front part of the left rotating frame 9 and the rear part of the right rotating frame 9 respectively; when working, when the connecting block 7 moves downward, it will drive the first telescopic rods 12 and the splints 10 on the left and right sides to move downward, and the splints 10 on the front and rear sides will drive the curb stone to move downward, and when the splint 10 drives the curb stone to move to a position in contact with the ground, the connecting block 7 continues to move downward, and the splints 10 on the front and rear sides are no longer subjected to the downward friction force. When the first telescopic rod 12 moves upward relative to the connecting block 7, the second connecting rod 13 will push up the rotating frames 9 on the left and right sides, so that the rear part of the left rotating frame 9 and the front part of the right rotating frame 9 will rotate upward relative to the intersection of the two rotating frames 9, thereby making the rotating frames 9 on the left and right sides respectively drive the front and rear plates 10 to move to the front and rear positions. At this time, when the connecting block 7 is driven to move upward, the front and rear plates 10 will not clamp the curb.

[0028] As a further solution of the present invention, the second driving mechanism includes four fixed plates 14, which are symmetrically distributed on the left and right sides of the connecting block 7 and the front and rear sides of the first telescopic rod 12; a ratchet 15 is rotatably connected to the bottom position of the surface of the fixed plate 14, and a pawl 16 is engaged on the surface of the ratchet 15 and the pawl 16 is fixedly connected to the connecting plate 11; one end of the outer side of the ratchet 15 is fixedly connected to a first rotating disk 17, and the outer surface of the first rotating disk 17 is fixedly connected to a second rotating disk 18; four baffles 19 are evenly fixedly connected to the surface of the first rotating disk 17, and the four baffles 19 are distributed in a circular array on the surface of the first rotating disk 17; a plurality of card slots 20 are evenly opened on the side surface of the second rotating disk 18, and the plurality of card slots 20 are fixedly opened. The second rotating disk 18 is distributed in a circular array; the bottom surface of the first telescopic rod 12 is fixedly connected to a baffle 21, the baffle 21 is in contact with the baffle rod 19, and the front and rear sides of the outer surface of the baffle 21 are symmetrically rotatably connected to the driving rod 22, and the surface of the driving rod 22 is fixedly connected to a torsion spring 23 at the connection position with the baffle 21, and the other end of the torsion spring 23 is fixedly connected to the baffle 21; the upper surface of the driving rod 22 is fixedly connected to a clamping block 24, the driving rod 22 is in contact with the side surface of the second rotating disk 18, and the clamping block 24 is engaged with the clamping groove 20; when working, when the connecting block 7 drives the splint 10 and the curb stone to move downward to the bottom position, the connecting block 7 continues to move downward, which will cause the bottom part of the first telescopic rod 12 to be lifted up. When the bottom side portion of the first telescopic rod 12 continues to contract, the baffle 21 drives the driving rod 22 to continue to move upward relative to the connecting block 7, and at this time the driving rod 22 is engaged with a groove 20 on the surface of the second rotating disk 18 through the clamping block 24 on its surface and drives the second rotating disk 18 to rotate through the clamping slot 20. When the second rotating disk 18 rotates, it drives the first rotating disk 17 to rotate, and the first rotating disk 17 drives a baffle 24 on its surface When the lever 19 is rotated to the height of the center of the rotating disk, the bottom side portion of the first telescopic rod 12 moves upward relative to the connecting block 7 through the second connecting rod 13, which will open the front and rear clamping plates 10. Then, the connecting frame is started to move upward. When the connecting frame moves upward, the first telescopic rod 12 will gradually return to its original position. The baffle 21 on the surface of the first telescopic rod 12 will contact the baffle rod 19 when it moves downward relative to the connecting block 7, and the first rotating disk 17 cannot rotate in the opposite direction under the action of the ratchet 15 and the pawl 16. Therefore, the baffle 21 will be blocked by the baffle rod 19 and cannot continue to move downward relative to the connecting block 7. At this time, the bottom side portion of the first telescopic rod 12 will drive the second connecting rod 13 to keep the front and rear clamping blocks 24 open.When it is necessary to lift the curb, the connecting block 7 and the front and rear clamping plates 10 are driven to move downward. When the front and rear clamping plates 10 move downward to the position where the curb can be clamped, the bottom side of the first telescopic rod 12 just contacts the upper surface of the curb. At this time, the connecting block 7 is continued to be driven downward. The bottom side of the first telescopic rod 12 will shrink under the action of the curb, and the baffle 21 on the surface of the first telescopic rod 12 will move upward relative to the connecting block 7. When the baffle 21 moves upward, it will be pulled upward by the driving rod 22 and The latching block 24 on its surface drives the second rotating disk 18 to continue rotating. When the baffle 21 moves to its uppermost position relative to the connecting block 7, the second rotating disk 18 rotates exactly 45 degrees, and the baffle 19 on the surface of the first rotating disk 17 rotates to a position where it no longer contacts the baffle 21. When the connecting block 7 continues to move upward, the first telescopic rod 12 returns to its longest position under the action of its own weight, thus preventing the clamping plate 10 from being stretched. The clamping plate 10 directly clamps the curb as it moves upward.

[0029] As a further solution of the present invention, the front surface of the crossbeam 6 is slidably connected to a sliding frame 25, and the bottom of the sliding frame 25 is rotatably connected to the connecting block 7; the left and right sides of the front surface of the upper side of the flatbed car 1 are symmetrically fixedly connected, and the surface of the fixed rod 26 is slidably connected to the third connecting rod 27, and the front end of the third connecting rod 27 is slidably connected to the sliding frame 25; when working, the sliding frame 25 can be driven to move downward by rotating the front part of the crossbeam 6, and the sliding frame 25 will drive the connecting block 7 to move downward. Due to the rotational connection between the sliding frame 25 and the connecting block 7, the connecting block 7 can maintain a vertical state and move downward; when the sliding frame 25 moves downward, it will drive the two third connecting rods 27 on its surface to move downward, and the third connecting rod 27 will slide downward on the surface of the fixed rod 26. Through the fixed rod 26 and the third connecting rod 27, the distance between the sliding frame 25 and the flatbed car 1 remains unchanged when moving up and down, so that the connecting block 7 and the splint 10 can move up and down in the vertical position, thereby improving the accuracy of the splint 10 clamping the curb and laying the curb.

[0030] As a further solution of the present invention, the first driving mechanism includes a rotating shaft 28, which is rotatably connected to the support seat 4 and fixedly connected to the crossbeam 6; a rubber pad 29 is fixedly connected to the upper surface of the support seat 4, and the rubber pad 29 is in contact with the crossbeam 6; a seat bag 30 is provided at the rear position of the upper surface of the crossbeam 6, and the seat bag 30 is fixedly connected to the crossbeam 6; a pedal 31 is fixedly connected to the rear surface of the flatbed truck 1, and the pedal 31 is located in the front and lower position of the seat bag 30; during operation, when lifting the curbstone, the user operates the entire equipment by standing on the pedal 31. When the front part of the driving crossbeam 6 is rotated upward to lift the curbstone, the user sits directly on the seat bag 30, and the seat bag 30 is pressed downward by the user's weight. When the seat bag 30 moves downward, it will drive the crossbeam 6 and the rotating shaft 28 to rotate, so that the front end part of the crossbeam 6 is tilted upward, thereby lifting the curbstone.

[0031] As a further solution of the present invention, the upper surface of the flatbed cart 1 is symmetrically connected to the left and right sides of the crossbeam 6 with a second telescopic rod 32, the other end of the second telescopic rod 32 is rotatably connected to the crossbeam 6 and a spring 33 is sleeved on the surface of the second telescopic rod 32, the bottom end of the spring 33 is fixedly connected to the bottom part of the second telescopic rod 32 and the upper end of the spring 33 is fixedly connected to the upper part of the second telescopic rod 32; during work, when the user sits on the seat bag 30 and lifts the curb, the curb can be moved to the paving position through the flatbed cart 1; when the flatbed cart 1 moves the curb to the paving position, the user slowly stands up and stands on the pedal 31. After the seat bag 30 loses pressure, it will slowly move downward under the action of the elastic force of the spring 33 and the gravity of the curb itself. When the curb drops to a position where it contacts the ground, under the action of the elastic force of the spring 33, the front side of the crossbeam 6 continues to rotate downward to press the first telescopic rod 12. By pressing the first telescopic rod 12, the opening mechanism can open the splint 10.

[0032] As a further solution of the present invention, the steering mechanism includes a steering rod 34, which passes through the crossbeam 6 and is rotatably connected to the pedal 31; the bottom end of the steering rod 34 is fixedly connected to a gear 35, and the front surface of the gear 35 is meshed with a first rack 36, the first rack 36 is slidably connected to the flatbed trolley 1 and the left and right ends of the first rack 36 are symmetrically fixedly connected to the second rack 37, the front surface of the second rack 37 is meshed with an incomplete gear 38, and the incomplete gear 38 is fixedly connected to the steering wheel 3 and the steering shaft of the flatbed trolley 1; during operation, when it is necessary to drive the flatbed trolley 1 to turn, the user rotates the rotating rod, and when the rotating rod rotates, the gear 35 rotates, and when the gear 35 rotates, it drives the first rack 36 to slide in one direction on the surface of the flatbed trolley 1, and when the first rack 36 slides, it drives the two second racks 37 connected to it to slide, and when the second rack 37 slides, it drives the steering shaft of the steering wheel 3 to rotate through the incomplete gear 38, and the steering shaft of the steering wheel 3 drives the steering wheel 3 to rotate, thereby achieving the steering effect of the flatbed trolley 1.

Claims

1. An electric flatbed truck for lifting and installing curbstones, comprising a flatbed truck (1), characterized in that: The bottom front position of the flatbed truck (1) is rotatably connected to two driving wheels (2) and the rear position is rotatably connected to two steering wheels (3); the rear surface of the flatbed truck (1) is provided with a steering mechanism, and the steering mechanism is used to drive the two steering wheels (3) to steer synchronously; the front and rear positions of the upper surface of the flatbed truck (1) are respectively fixedly connected to a support seat (4) and a buffer seat (5); a crossbeam (6) is provided on the upper side of the support seat (4) and the buffer seat (5); a hoisting mechanism is provided on the front side of the crossbeam (6), and the hoisting mechanism is used to automatically clamp the curb when it is necessary to lift the curb and to loosen the curb when it is necessary to lower the curb; a first driving mechanism is provided on the rear side of the crossbeam (6), and the first driving mechanism is used to drive the hoisting mechanism to lift or lower the curb in a more labor-saving manner; The hoisting mechanism comprises a connecting block (7), wherein the connecting block (7) is symmetrically connected to two first connecting rods (8) at both the front and rear sides thereof, and two rotating frames (9) are provided at the left and right sides of the bottom of the connecting block (7), wherein the two rotating frames (9) are cross-arranged and the two rotating frames (9) are connected to each other at the cross position; the two first connecting rods (8) at the front and rear sides are connected to the front end of the right rotating frame (9) and the rear end of the left rotating frame (9) respectively; the bottom positions of the two rotating frames (9) are fixedly connected to a clamping plate (10), and the surfaces of the two clamping plates (10) are mutually connected. The side close to the curb is provided with anti-slip grooves; the surface of the connecting block (7) is provided with an opening mechanism, the opening mechanism is used to open the clamping plates (10) on the front and rear sides, so that when the two clamping plates (10) are moved to the bottom position, the curb can be located between the two clamping plates (10); the surface of the connecting block (7) is provided with a second driving mechanism, the second driving mechanism is used to drive the opening mechanism to release the two clamping plates (10) when the two clamping plates (10) are moved to a position where the curb can be clamped, and when the clamping plates (10) hoist the curb to the installation position, drive the opening mechanism to open the two clamping plates (10); The spreading mechanism comprises two connecting plates (11), the two connecting plates (11) are symmetrically distributed on the left and right sides of the connecting block (7), and the two connecting plates (11) are fixedly connected to the connecting block (7); a first telescopic rod (12) is fixedly connected to the bottom surface of the connecting plate (11), the bottom end of the first telescopic rod (12) is rotatably connected to a second connecting rod (13), and the other ends of the second connecting rods (13) on the left and right sides are rotatably connected to the front part of the left rotating frame (9) and the rear part of the right rotating frame (9), respectively.

2. The electric flatbed truck for lifting and installing curbstones according to claim 1, characterized in that: The second driving mechanism comprises four fixed plates (14), and the four fixed plates (14) are symmetrically distributed on the left and right sides of the connecting block (7) and the front and rear sides of the first telescopic rod (12); a ratchet (15) is rotatably connected to the bottom position of the surface of the fixed plate (14), and a pawl (16) is engaged on the surface of the ratchet (15), and the pawl (16) is fixedly connected to the connecting plate (11); an outer end of the ratchet (15) is fixedly connected to a first rotating disk (17), and an outer surface of the first rotating disk (17) is fixedly connected to a second rotating disk (18); four blocking rods (19) are evenly fixedly connected to the surface of the first rotating disk (17), and the four blocking rods (19) are distributed in a circular array on the surface of the first rotating disk (17); the second rotating disk The side surface of the first telescopic rod (12) is evenly provided with a plurality of slots (20), and the plurality of slots (20) are distributed in a circular array on the surface of the second rotating disk (18); a baffle (21) is fixedly connected to the surface of the bottom side of the first telescopic rod (12), the baffle (21) is in contact with the baffle rod (19), and the outer surface of the baffle (21) is symmetrically connected to the driving rod (22) at the front and rear sides, and the surface of the driving rod (22) is fixedly connected to a torsion spring (23) at the connection position with the baffle (21), and the other end of the torsion spring (23) is fixedly connected to the baffle (21); a clamping block (24) is fixedly connected to the upper surface of the driving rod (22), the driving rod (22) is in contact with the side surface of the second rotating disk (18), and the clamping block (24) is engaged with the slot (20).

3. The electric flatbed truck for lifting and installing curbstones according to claim 1, characterized in that: The front surface of the crossbeam (6) is slidably connected to a sliding frame (25), and the bottom of the sliding frame (25) is rotatably connected to the connecting block (7); fixed rods (26) are symmetrically fixedly connected to the left and right sides of the front surface of the upper side of the flatbed vehicle (1), and the surface of the fixed rod (26) is slidably connected to a third connecting rod (27), and the front end of the third connecting rod (27) is slidably connected to the sliding frame (25).

4. The electric flatbed truck for lifting and installing curbstones according to claim 1, characterized in that: The first driving mechanism comprises a rotating shaft (28), the rotating shaft (28) is rotatably connected to the support seat (4) and the rotating shaft (28) is fixedly connected to the crossbeam (6); a rubber pad (29) is fixedly connected to the upper surface of the support seat (4), and the rubber pad (29) is in contact with the crossbeam (6); a seat bag (30) is provided at the rear side of the upper surface of the crossbeam (6), and the seat bag (30) is fixedly connected to the crossbeam (6); a pedal (31) is fixedly connected to the rear surface of the flatbed vehicle (1), and the pedal (31) is located in front of and below the seat bag (30).

5. The electric flatbed truck for lifting and installing curbstones according to claim 1 is characterized in that: The upper surface of the flatbed truck (1) is symmetrically connected to a second telescopic rod (32) at left and right sides of the crossbeam (6), the other end of the second telescopic rod (32) is connected to the crossbeam (6) for rotation, and a spring (33) is sleeved on the surface of the second telescopic rod (32), the bottom end of the spring (33) is fixedly connected to the bottom part of the second telescopic rod (32), and the upper end of the spring (33) is fixedly connected to the upper part of the second telescopic rod (32).

6. The electric flatbed truck for lifting and installing curbstones according to claim 4, characterized in that: The steering mechanism comprises a steering rod (34), the steering rod (34) passes through the crossbeam (6) and is rotatably connected to the pedal (31); a gear (35) is fixedly connected to the bottom end of the steering rod (34), a first rack (36) is meshed on the front surface of the gear (35), the first rack (36) is slidably connected to the flatbed vehicle (1), and second racks (37) are symmetrically fixedly connected to the left and right ends of the first rack (36), an incomplete gear (38) is meshed on the front surface of the second rack (37), and the incomplete gear (38) is fixedly connected to the steering shaft of the steering wheel (3).

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