A road surface rolling device for road and bridge construction

Abstract

The present invention discloses a road surface rolling device for road and bridge construction, which includes a support frame. A towing head is arranged on one side of the support frame. Rotary shafts are rotatably arranged on both sides of the support frame, and a pressing roller is arranged between the rotary shafts. Rolling cylinders are circumferentially and evenly rotatably arranged on the pressing roller. Limit rolling devices for restricting the rotation of the rolling cylinders are arranged at both ends of the pressing roller. Under the traction of a towing vehicle, the rolling cylinders can roll on fine graded stones. When it is necessary to roll coarse graded stones, the controller of the electric telescopic rod is operated to control the ejector rod of the electric telescopic rod to extend until the roller seat presses tightly on the pressing ring, and the first friction ring presses tightly on the second friction ring, stabilizing the state of the rolling cylinders in the column grooves. The reversing valve is operated to make the ejector rod of the hydraulic cylinder retract, and the pressing plate loses the pressure against the rotary shaft. At this time, under the traction of the towing vehicle, the pressing roller can roll on the coarse graded stone layer. Therefore, the conversion between two modes is realized, and the adaptability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of road and bridge construction, and particularly relates to a road rolling device for road and bridge construction. Background Art

[0002] During the process of road and bridge construction, graded coarse stones and graded fine stones need to be rolled step by step. The purpose is to make the cooperation between the stones more compact and improve the strength of the upper layer. During the rolling process, for graded fine stones, a small rolling surface diameter is required. Usually, a tractor is used to tow a roller frame to move, so that the rollers on the roller frame roll on it. In order to increase the rolling pressure, workers will stand on the roller frame. For graded coarse stones, a large roller road rolling device is towed by a tractor for rolling. However, at present, there is a lack of a rolling device that can integrate the two rolling methods to meet the actual needs. Summary of the Invention

[0003] The purpose of the present invention is to provide a road rolling device for road and bridge construction to solve the problems existing in the prior art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A road rolling device for road and bridge construction includes a support frame. A towing head is arranged on one side of the support frame. Rotating shafts are rotatably arranged on both sides of the support frame, and a pressure roller is arranged between the rotating shafts. Rollers are circumferentially and evenly rotatably arranged on the pressure roller. Limit rolling devices for restricting the rotation of the rollers are arranged at both ends of the pressure roller. And limit rotation devices for restricting the rotation of the rotating shafts are arranged on both sides of the support frame. Rotating rods are arranged on both sides inside the support frame, and a water collecting pipe is arranged between the rotating rods. Atomizing heads are evenly arranged before and after on one side of the water collecting pipe. An outlet pipe is arranged on the other side of the water collecting pipe, and the outlet pipe is connected to an external pressurized water tank through a hose.

[0005] Preferably, a bearing hole is arranged on one side of the support frame. A first bearing is arranged in the bearing hole, and the rotating shaft is inserted into the inner ring of the first bearing.

[0006] Preferably, the limit rolling device includes rotating columns rotatably arranged at the central positions of both ends of the roller. First friction rings are arranged at both ends of the roller and sleeved on the rotating columns. Pressure rings are sleeved on the rotating shafts, and the rotating columns all penetrate through the pressure rings. Second friction rings are arranged on the pressure rings. A connecting plate is arranged at the end of the rotating column passing through the pressure ring. A first spring is sleeved on the rotating column, and both ends of the first spring are supported on the pressure ring and the connecting plate. Vertical plates are arranged on both sides of the support frame. Electric telescopic rods are arranged on the vertical plates. The top rod end of the electric telescopic rod is connected to a roller seat, and the roller of the roller seat is slidably arranged on the pressure ring.

[0007] Preferably, the rotation limiting device includes mounting brackets arranged on both sides of the support frame. Hydraulic cylinders are arranged on the mounting brackets. A pressing plate is arranged at the end of the ejector rod of the hydraulic cylinder. A soft plate is arranged inside the pressing plate. Anti-slip convex strips are evenly arranged on the soft plate. Anti-slip grooves are evenly arranged circumferentially at one end of the rotating shaft passing through the bearing hole, and the anti-slip convex strips press against the anti-slip grooves. A support plate is connected inside the support frame. A flow dividing and collecting valve is arranged on the support plate. The oil inlet and outlet ends of the hydraulic cylinder are connected to the branch oil inlet and outlet ends of the flow dividing and collecting valve through a pressure oil pipe. The main oil inlet and outlet ends of the flow dividing and collecting valve are connected to an external reversing valve through a pressure oil pipe. One side access end of the external reversing valve is connected to the oil suction and discharge end of an external hydraulic oil pump through a pressure oil pipe.

[0008] Preferably, connecting columns are arranged on both sides inside the support frame. A riser pipe is arranged between the connecting columns. A lifting rod is inserted into the riser pipe. A lead screw is screwed to the top of the riser pipe, and the bottom of the lead screw is rotatably arranged on the top of the lifting rod. The top of the lead screw is connected to a rotating plate. A pushing plate is arranged at the bottom of the lifting rod.

[0009] Preferably, a bearing groove is arranged inside the support frame. A second bearing is arranged in the bearing groove. The rotating rod is inserted into the inner ring of the second bearing. A second spring and a third friction ring are sleeved on the rotating rod.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] In the present invention, the tractor is used to tow the rolling device so that one roller supports on the ground and stops moving. The reversing valve is operated to make the ejector rod of the hydraulic cylinder extend, driving the pressing plate to press against the rotating shaft, making the soft plate press tightly on the rotating shaft, so that the rotating shaft and the pressure roller cannot rotate. At this time, under the traction of the tractor, the roller can roll on the graded fine gravel. When it is necessary to roll the graded coarse gravel, the controller of the electric telescopic rod is operated to make the ejector rod of the electric telescopic rod extend until the roller seat presses tightly on the pressure ring, and the first friction ring presses tightly on the second friction ring, stabilizing the state of the roller in the column groove. The reversing valve is operated to make the ejector rod of the hydraulic cylinder retract, and the pressing plate loses the pressure on the rotating shaft. At this time, under the traction of the tractor, the pressure roller can roll on the graded coarse gravel layer. Therefore, the conversion between the two modes is realized, and the adaptability is high.

[0012] In the present invention, the water collecting pipe can be flipped, so that the atomizing head can be flipped at different downward oblique angles to spray water mist on the ground, thereby reducing the amount of dust during the rolling process.

[0013] In the present invention, by rotating the rotating plate, with the cooperation of the lead screw and the threaded hole, the lifting rod is driven to move upward, and then the pushing plate is driven to move downward. When the appropriate height is adjusted, the rotation of the rotating plate is stopped. Therefore, when the tractor moves, the pushing plate can push the gravel at the upper high position of the graded fine gravel layer to the right, so that the rolled graded fine gravel layer is rolled more evenly. Description of the Drawings

[0014] Figure 1 is the front view schematic diagram of the present invention;

[0015] Figure 2 is Figure 1 the top view schematic diagram of

[0016] In the figure: 1 support frame, 2 towing head, 3 first bearing, 4 rotating shaft, 5 pressing roller, 6 roller, 7 rotating column, 8 first friction ring, 9 pressing ring, 10 second friction ring, 11 connecting plate, 12 first spring, 13 vertical plate, 14 electric telescopic rod, 15 roller seat, 16 mounting bracket, 17 hydraulic cylinder, 18 pressing plate, 19 soft plate, 20 anti-slip convex strip, 21 anti-slip groove, 22 support plate, 23 flow dividing and collecting valve, 24 connecting column, 25 vertical pipe, 26 lifting rod, 27 lead screw, 28 rotating plate, 29 pushing plate, 30 rotating rod, 31 water collecting pipe, 32 atomizing head, 33 second spring, 34 third friction ring, 35 outlet pipe, 36 hose. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention.

[0018] Refer to Figure 1 and Figure 2As shown in the figure, an embodiment of the present invention provides a road surface rolling device for road and bridge construction, including a support frame 1. A towing head 2 is bolted and fixed to the right side of the support frame 1. The towing head 2 is used to connect the towing seat at the rear of the tractor. Bearing holes are provided at the front and rear positions on the left side of the support frame 1. A first bearing 3 is press-fitted into the bearing holes, and a rotating shaft 4 is press-fitted into the inner ring of the first bearing 3. The rotating shaft 4 is flange-connected to the centers of both ends of the pressing roller 5. Therefore, through the rotation support of the first bearing 3, the pressing roller 5 rotates stably and smoothly. Column grooves are evenly arranged in the circumferential direction on the pressing roller 5, and rollers 6 are slidably inserted into the column grooves. Limit-rolling devices for restricting the rotation of the rollers 6 are arranged at the front and rear ends of the pressing roller 5. The limit-rolling devices include rotating columns 7 rotatably arranged at the center positions of the front and rear ends of the rollers 6. Third bearing grooves are provided at the center positions of the front and rear ends of the rollers 6. Third bearings are press-fitted into the third bearing grooves, and the rotating columns 7 are inserted into the inner rings of the third bearings. First annular grooves are provided at the front and rear ends of the rollers 6, and first friction rings 8 are bonded to the first annular grooves by AB resin glue. The first friction rings 8 are made of rubber. The first friction rings 8 are sleeved on the rotating columns 7. Pressure rings 9 are sleeved on the rotating shafts 4, and the rotating columns 7 all slide through the pressure rings 9. Second friction rings 10 are bonded to the pressure rings 9 by AB resin glue. The second friction rings 10 are made of rubber. A connecting plate 11 is welded to the end of the rotating column 7 that penetrates through the pressure ring 9. A first spring 12 is sleeved on the rotating column 7, and both ends of the first spring 12 are welded to the pressure ring 9 and the connecting plate 11. The first spring 12 is of the stretching and retracting type, and the stretching and retracting force of the first spring 12 is 80 Newtons. Vertical plates 13 are welded to the front and rear sides of the support frame 1. Electric telescopic rods 14 are bolted and fixed to the vertical plates 13. The end of the ejector rod of the electric telescopic rod 14 is bolted and fixed to a roller seat 15, and the rollers of the roller seat 15 are slidably arranged on the pressure ring 9. The power input end of the electric telescopic rod 14 is connected to the power output end of an external electric telescopic rod 14 controller through a cable. The power input end of the electric telescopic rod 14 is connected to an external DC power supply through a cable. By operating the electric telescopic rod controller, the ejector rod of the electric telescopic rod 14 is controlled to extend and retract. And the maximum extension length of the ejector rod of the electric telescopic rod 14 satisfies that under the pressing of the roller seat 15, the second friction ring 10 is pressed tightly against the first friction ring 8, thereby restricting the rotation of the rollers 6 in the column grooves. And since the rollers of the roller seat 15 roll on the pressure ring 9, the pressure ring 9 can be rollingly supported.

[0019] Refer to Figure 1 and Figure 2, and limiting rotation devices for restricting the rotation of the rotating shaft 4 are arranged on the front and rear sides of the support frame 1. The limiting rotation devices include mounting frames 16 bolted to the front and rear sides of the support frame 1. The mounting frame 16 is an L-shaped frame. A hydraulic cylinder 17 is bolted to the mounting frame 16. A pressing plate 18 is bolted to the end of the ejector rod of the hydraulic cylinder 17. The pressing plate 18 is an arc-shaped plate. A soft plate 19 is adhesively bonded inside the pressing plate 18 with resin glue. The material of the soft plate 19 is rubber. Anti-slip ridges 20 are uniformly arranged on the soft plate 19. One end of the rotating shaft 4 passing through the bearing hole is circumferentially and uniformly provided with anti-slip grooves, and the anti-slip ridges 20 press against the anti-slip grooves 21. A support plate 22 is bolted inside the support frame 1. A flow dividing and collecting valve 23 is bolted to the support plate 22. The oil inlet and outlet ends of the hydraulic cylinder 17 are connected to the branch oil inlet and outlet ends of the flow dividing and collecting valve 23 through pressure oil pipes. The main oil inlet and outlet ends of the flow dividing and collecting valve 23 are connected to an external reversing valve through pressure oil pipes. One side access end of the external reversing valve is connected to the oil suction and discharge end of an external hydraulic oil pump through a pressure oil pipe. Therefore, by operating the external reversing valve, the ejector rod of the hydraulic cylinder 17 at the front and rear positions can be controlled to extend or retract, and the maximum extension length of the ejector rod of the hydraulic cylinder 17 satisfies that the soft ring 19 can effectively press against the rotating shaft 4.

[0020] Refer to Figure 1 and Figure 2 , connecting columns 24 are welded on the front and rear sides inside the support frame 1. A vertical pipe 25 is welded between the connecting columns 24. The vertical pipe 25 is a square pipe. A lifting rod 26 is slidably inserted into the vertical pipe 25. The lifting rod 26 is a square rod. A threaded hole is provided at the top of the vertical pipe 25, and a lead screw 27 is screwed into the threaded hole. A connecting shaft is integrally provided at the center of the bottom of the lead screw 27. A slot is provided at the top of the lifting rod 26, and a fourth bearing is press-fitted into the slot. The connecting shaft is press-fitted into the inner ring of the fourth bearing. Through the rotational bearing of the fourth bearing, the rotation of the lead screw 27 is stable. A rotating plate 28 is integrally provided at the top of the lead screw 27. A push plate 29 is welded to the bottom of the lifting rod 26. By rotating the rotating plate 28, under the cooperation of the lead screw 27 and the threaded hole, the lifting rod 26 is driven to move upward, thereby driving the push plate 29 to move downward.

[0021] Refer to Figure 2, a bearing groove is provided at the front and rear positions inside the support frame 1. A second bearing is press-fitted into the bearing groove. The rotating rod 30 is press-fitted into the inner ring of the second bearing. A water collecting pipe 31 is integrally provided between the rotating rods 30. The second bearing rotates to support the rotating rod 30, making the water collecting pipe 31 rotate stably and smoothly. Atomizing heads 32 are evenly screwed on the left side of the water collecting pipe 31. A second spring 33 and a third friction ring 34 are sleeved on the rotating rod 30. The second spring 33 is of the compression and rebound type, and the initial compression and rebound force of the second spring 33 is 40 Newtons. The third friction ring 34 is a rough-surface steel ring. At this time, the second spring 33 is in a compressed state. The two ends of the second spring 33 are respectively welded to the water collecting pipe 31 and the third friction ring 34. Under the elastic support of the second spring 33, the third friction ring 34 is pressed tightly against the inner wall of the support frame 1 to restrict the rotation of the rotating rod 30. A connecting pipe 35 is integrally provided on the right side of the water collecting pipe 31, and the connecting pipe 35 is press-fitted into a hose 36. The other end of the hose 36 is connected to the drainage end of an external pressurized water tank.

[0022] The working principle of this embodiment is as follows: Connect the towing head 2 to the towing seat at the rear of an external tractor. When it is necessary to roll the graded fine gravel, the tractor is used to tow this rolling device so that one roller 6 supports on the ground and stops moving. Operate the reversing valve to make the ejector rod of the hydraulic cylinder 17 extend, driving the pressing plate 18 to press against the rotating shaft 4, making the soft plate 19 press tightly on the rotating shaft 4, so that the rotating shaft 4 and the pressing roller 5 cannot rotate. At this time, under the towing action of the tractor, the roller 6 can roll on the graded fine gravel. When it is necessary to roll the graded coarse gravel, operate the electric telescopic rod controller to make the ejector rod of the electric telescopic rod 14 extend until the roller seat 15 presses tightly on the pressure ring 9, and the first friction ring 8 presses tightly on the second friction ring 10, stabilizing the state of the roller 6 in the column groove. Operate the reversing valve to make the ejector rod of the hydraulic cylinder 17 retract, and the pressing plate 18 loses the pressure on the rotating shaft 4. At this time, under the towing of the tractor, the pressing roller 5 can roll on the graded coarse gravel layer. Therefore, the conversion between the two modes is realized, and the adaptability is high;

[0023] The pressurized water in the pressurized water tank drains into the water collecting pipe 31 through the hose 36. The water collecting pipe 31 can be flipped, so that the atomizing heads 32 can be flipped to different downward oblique angles to spray water mist on the ground, thereby reducing the amount of dust during the rolling process;

[0024] When rolling the graded fine gravel, in order to limit the paving height before rolling, in addition to erecting baffles around the paving layer, the rotating plate 28 can be rotated. Under the cooperation of the lead screw 27 and the threaded hole, the lifting rod 26 is driven to move upward, thereby driving the pushing plate 29 to move downward. Stop rotating the rotating plate 28 when it is adjusted to the appropriate height. Therefore, under the movement of the tractor, the pushing plate 29 can push the gravel at the upper high position of the graded fine gravel layer to the right, so that the rolled graded fine gravel layer is rolled more evenly.

[0025] The above are only the preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims

1. A road surface rolling device for road and bridge construction, characterized in that: It includes a support frame (1), a towing head (2) is arranged on one side of the support frame (1), rotating shafts (4) are rotatably arranged on both sides of the support frame (1), and a pressure roller (5) is arranged between the rotating shafts (4). Roller columns (6) are circumferentially and evenly rotatably arranged on the pressure roller (5). Limit-rolling devices for restricting the rotation of the roller columns (6) are arranged at both ends of the pressure roller (5), and rotation-limiting devices for restricting the rotation of the rotating shafts (4) are arranged on both sides of the support frame (1). Rotating rods (30) are arranged on both sides inside the support frame (1), a water collecting pipe (31) is arranged between the rotating rods (30), atomizing heads (32) are evenly arranged before and after on one side of the water collecting pipe (31), an outlet pipe (35) is arranged on the other side of the water collecting pipe (31), and the outlet pipe (35) is connected to an external pressurized water tank through a hose (36); The limit-rolling device includes rotating columns (7) rotatably arranged at the central positions of both ends of the roller column (6). First friction rings (8) are arranged at both ends of the roller column (6), and the first friction rings (8) are sleeved on the rotating columns (7). Pressure rings (9) are sleeved on the rotating shafts (4), and the rotating columns (7) all penetrate through the pressure rings (9). Second friction rings (10) are arranged on the pressure rings (9). A connecting plate (11) is arranged at the end of the rotating column (7) that penetrates out of the pressure ring (9). A first spring (12) is sleeved on the rotating column (7), and both ends of the first spring (12) are supported on the pressure ring (9) and the connecting plate (11). Vertical plates (13) are arranged on both sides of the support frame (1), electric telescopic rods (14) are arranged on the vertical plates (13), the end of the top rod of the electric telescopic rod (14) is connected with a roller seat (15), and the roller of the roller seat (15) is slidably arranged on the pressure ring (9); The rotation-limiting device includes mounting frames (16) arranged on both sides of the support frame (1). Hydraulic cylinders (17) are arranged on the mounting frames (16). A pressing plate (18) is arranged at the end of the top rod of the hydraulic cylinder (17). A soft plate (19) is arranged inside the pressing plate (18). Anti-slip convex strips (20) are evenly arranged on the soft plate (19). Anti-slip grooves (21) are evenly arranged circumferentially at the end of the rotating shaft (4) that penetrates out of the bearing hole, and the anti-slip convex strips (20) are pressed against the anti-slip grooves (21). A support plate (22) is connected inside the support frame (1). A flow dividing and collecting valve (23) is arranged on the support plate (22). The oil inlet and outlet ends of the hydraulic cylinder (17) are connected to the branch oil inlet and outlet ends of the flow dividing and collecting valve (23) through pressure oil pipes. The main oil inlet and outlet ends of the flow dividing and collecting valve (23) are connected to an external reversing valve through pressure oil pipes. The access end on one side of the external reversing valve is connected to the oil suction and discharge end of an external hydraulic oil pump through a pressure oil pipe; On both sides inside the support frame (1), connecting columns (24) are provided. Between the connecting columns (24), a riser pipe (25) is provided. An elevating rod (26) is inserted into the riser pipe (25). At the top of the riser pipe (25), a lead screw (27) is screwed, and the bottom of the lead screw (27) is rotatably arranged at the top of the elevating rod (26). At the top of the lead screw (27), a rotating plate (28) is connected. At the bottom of the elevating rod (26), a pushing plate (29) is provided.

2. The road surface rolling device for road and bridge construction according to claim 1, characterized in that: On one side of the support frame (1), a bearing hole is provided. Inside the bearing hole, a first bearing (3) is provided, and a rotating shaft (4) is inserted into the inner ring of the first bearing (3).

3. A road surface rolling device for road and bridge construction according to claim 1, characterized in that: Inside the support frame (1), a bearing groove is provided. Inside the bearing groove, a second bearing is provided. A rotating rod (30) is inserted into the inner ring of the second bearing. A second spring (33) and a third friction ring (34) are sleeved on the rotating rod (30).

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