Road roller for roadbed construction

Abstract

The invention relates to the technical field of road rollers, and discloses a road roller for roadbed construction, the road roller comprises a machine body, a main compression roller and a secondary rolling assembly, the main compression roller is rotatably arranged at the right end of the machine body, an assisting groove is formed in the bottom of the machine body, and the secondary rolling assembly is arranged in the assisting groove; and the second-stage rolling assembly comprises a circulating pressurization unit, a concave-convex detection unit and a differential distribution unit. The invention particularly provides a road roller for roadbed construction, which can increase pressure when encountering roadbed bulges.

Description

Technical Field

[0001] The invention relates to the technical field of road rollers, and in particular to a road roller for roadbed construction. Background Art

[0002] An invention patent with application number CN202210160118.5 discloses a rolling device for road construction, and specifically discloses the technical solution of "through the operation of a rodless cylinder, the first roller is repeatedly moved left and right to roll the large potholes and bumps in the road. In the later stage, the height of the first roller and the second roller can be converted by the lifting mechanism, so that the second roller can roll the small potholes remaining in the road. Such a rolling mode can achieve a better flattening effect."

[0003] Although the technical solution of the application has the function of rolling the remaining small potholes again by the second roller after the first roller has initially flattened them through the design of the first roller and the second roller, the second roller in the technical solution is not smart enough in regulating the pressure of the roadbed and cannot increase the pressure when encountering a bump. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a roller for roadbed construction. In order to solve the problem that the prior art is not smart enough in regulating the pressure of the roadbed and cannot increase the pressure when encountering a bump, the present invention proposes a roller for roadbed construction that can increase the pressure when encountering a bump on the roadbed.

[0005] The technical solution adopted by the present invention is as follows: A roller for roadbed construction, including a machine body, a main pressure roller and a secondary roller assembly, wherein the main pressure roller is rotatably arranged at the right end of the machine body, an assisting groove is opened at the bottom of the machine body, and the secondary roller assembly is arranged in the assisting groove, and the secondary roller assembly includes a circulating boosting unit, a concave-convex detection unit and a differential speed distribution unit.

[0006] Further, the concave-convex detection unit is arranged in the assisting groove, and the concave-convex detection unit includes a middle platform, a middle gear, a detection rod, a middle rack, a detection wheel and a speed matching connecting shaft. The middle platform is fixedly arranged in the assisting groove, the middle gear is rotatably arranged at the center of the middle platform, the detection rod is vertically slidably arranged in the middle platform, the middle rack is fixedly connected to the detection rod, the middle rack is meshingly connected to the middle gear, and the detection rod and the middle rack are both provided with two in a circular array relative to the central axis of the middle gear. The detection wheel and the speed matching connecting shaft are respectively rotatably arranged at the ends of the two detection rods, the detection wheel is located below the middle gear, and the speed matching connecting shaft is located above the middle gear.

[0007] Further, the differential distribution unit is arranged in the assisting groove, and the differential distribution unit includes a height limiting bracket, a motor, a distribution differential and a speed matching connecting gear. The height limiting bracket is vertically slidably arranged in the assisting groove, the motor is fixedly arranged below the height limiting bracket, and the distribution differential is arranged below the height limiting bracket. The distribution differential includes an input gear, a right output gear and a left output shaft. The input gear is fixedly connected to the output end of the motor, the speed matching connecting gear is fixedly arranged on the speed matching connecting shaft, the right output gear is meshed with the speed matching connecting gear, and the left output shaft is coaxially arranged with the right output gear.

[0008] Furthermore, the differential distribution unit also includes an elastic load wheel and a load block, the left output shaft is fixedly connected to the elastic load wheel, the load block is fixedly arranged in the assisting groove, and the load block is closely connected to the elastic load wheel.

[0009] Furthermore, the circulating boosting unit is arranged in the assisting groove, and the circulating boosting unit includes a boosting box, a boosting orifice plate, an auxiliary roller frame, an auxiliary pressure roller and a gear pump. The boosting box is fixedly arranged in the assisting groove, the boosting orifice plate is vertically slidably arranged in the boosting box, the auxiliary roller frame is vertically slidably penetrated and arranged at the bottom of the boosting box, the auxiliary pressure roller is rotatably arranged at the bottom of the auxiliary roller frame, and the gear pump is fixedly arranged under the height limiting bracket, a pumping gear in the gear pump is fixedly connected to the speed matching connecting shaft, and the upper end of the gear pump is connected to the upper end pipeline of the boosting box.

[0010] Furthermore, the circulation boosting unit also includes a reflux box, which is fixed in the assisting tank, the lower end of the gear pump is connected to the upper end pipeline of the reflux box, and the lower end of the boosting box is connected to the lower end pipeline of the reflux box.

[0011] Furthermore, the concave-convex detection unit also includes a counterweight block, and the counterweight block is fixed on a detection rod rotatably connected to the detection wheel.

[0012] Furthermore, the auxiliary grooves and the secondary rolling components are provided with multiple groups in a front-to-back linear array.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The cooperation of the circulating boosting unit, the bump detection unit and the differential distribution unit enables the detection wheel to be lifted by the raised roadbed when encountering a bump on the roadbed, and the lifting degree of the detection wheel can be adjusted according to the bump degree of the roadbed. The middle gear and the differential distribution unit further increase the top fluid impact force on the boosting orifice plate, the auxiliary roller frame and the auxiliary pressure roller, thereby increasing the contact pressure between the auxiliary pressure roller and the roadbed and improving the flattening effect of the auxiliary pressure roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of a road roller for roadbed construction according to the present invention.

[0015] Figure 2 It is a three-dimensional schematic diagram of the two-stage rolling assembly of the present invention.

[0016] Figure 3 It is a three-dimensional schematic diagram of the circulating boosting unit and the speed matching connecting shaft of the present invention.

[0017] Figure 4 It is a cross-sectional schematic diagram of the circulating boosting unit and the speed matching connecting shaft of the present invention.

[0018] Figure 5 It is a three-dimensional schematic diagram of the concave-convex detection unit of the present invention.

[0019] Figure 6 It is a cross-sectional schematic diagram of the concave-convex detection unit of the present invention.

[0020] Figure 7 It is a three-dimensional schematic diagram of the differential distribution unit and the speed matching connecting shaft of the present invention.

[0021] Figure 8 It is a three-dimensional schematic diagram of the distribution differential of the present invention.

[0022] Among them, 1. body, 2. main pressure roller, 3. auxiliary groove, 4. secondary rolling assembly, 5. circulation boost unit, 501. boost box, 502. boost orifice plate, 503. auxiliary roller frame, 504. auxiliary pressure roller, 505. reflux box, 506. gear pump, 6. concave-convex detection unit, 601. middle platform, 602. middle gear, 603. detection rod, 604. middle rack, 605. detection wheel, 606. counterweight, 607. speed matching connecting shaft, 7. differential distribution unit, 701. height limiting bracket, 702. motor, 703. distribution differential, 7031. input gear, 7032. right output gear, 7033. left output shaft, 704. speed matching connecting gear, 705. elastic load wheel, 706. load block.

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0024] 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figure 1 to Figure 8 As shown, a roller for roadbed construction includes a machine body 1, a main pressure roller 2 and a secondary roller assembly 4. The main pressure roller 2 is rotatably arranged at the right end of the machine body 1. An assisting groove 3 is opened at the bottom of the machine body 1. The secondary roller assembly 4 is arranged in the assisting groove 3. The secondary roller assembly 4 includes a circulating boosting unit 5, a concave-convex detection unit 6 and a differential distribution unit 7.

[0027] like Figure 1 to Figure 8 As shown, the concave-convex detection unit 6 is arranged in the assisting groove 3, and the concave-convex detection unit 6 includes a middle platform 601, a middle gear 602, a detection rod 603, a middle rack 604, a detection wheel 605 and a speed matching connecting shaft 607. The middle platform 601 is fixedly arranged in the assisting groove 3, the middle gear 602 is rotatably arranged at the center of the middle platform 601, the detection rod 603 is vertically slidably arranged in the middle platform 601, the middle rack 604 is fixedly connected to the detection rod 603, the middle rack 604 is meshingly connected to the middle gear 602, and the detection rod 603 and the middle rack 604 are both provided with two in a circular array relative to the central axis of the middle gear 602, the detection wheel 605 and the speed matching connecting shaft 607 are respectively rotatably arranged at the ends of the two detection rods 603, the detection wheel 605 is located below the middle gear 602, and the speed matching connecting shaft 607 is located above the middle gear 602.

[0028] like Figure 1 to Figure 8 As shown, the differential distribution unit 7 is arranged in the assisting groove 3, and the differential distribution unit 7 includes a height limiting bracket 701, a motor 702, a distribution differential 703 and a speed matching connecting gear 704. The height limiting bracket 701 is vertically slidably arranged in the assisting groove 3, the motor 702 is fixedly arranged below the height limiting bracket 701, and the distribution differential 703 is arranged below the height limiting bracket 701. The distribution differential 703 includes an input gear 7031, a right output gear 7032 and a left output shaft 7033. The input gear 7031 is fixedly connected to the output end of the motor 702, the speed matching connecting gear 704 is fixedly arranged on the speed matching connecting shaft 607, the right output gear 7032 is meshedly connected to the speed matching connecting gear 704, and the left output shaft 7033 is coaxially arranged with the right output gear 7032.

[0029] like Figure 1 to Figure 8As shown, the differential distribution unit 7 also includes an elastic load wheel 705 and a load block 706 , the left output shaft 7033 is fixedly connected to the elastic load wheel 705 , the load block 706 is fixedly disposed in the assisting groove 3 , and the load block 706 is closely connected to the elastic load wheel 705 .

[0030] like Figure 1 to Figure 8 As shown, the circulating boosting unit 5 is arranged in the assisting groove 3, and the circulating boosting unit 5 includes a boosting box 501, a boosting orifice plate 502, an auxiliary roller frame 503, an auxiliary pressure roller 504 and a gear pump 506. The boosting box 501 is fixedly arranged in the assisting groove 3, the boosting orifice plate 502 is vertically slidably arranged in the boosting box 501, the auxiliary roller frame 503 is vertically slidably penetrated and arranged at the bottom of the boosting box 501, the auxiliary pressure roller 504 is rotatably arranged at the bottom of the auxiliary roller frame 503, and the gear pump 506 is fixedly arranged below the height limiting bracket 701. A pumping gear in the gear pump 506 is fixedly connected to the speed matching connecting shaft 607, and the upper end of the gear pump 506 is connected to the upper end pipeline of the boosting box 501.

[0031] like Figure 1 to Figure 8 As shown, the circulation boosting unit 5 also includes a reflux box 505, which is fixed in the assisting tank 3, the lower end of the gear pump 506 is connected to the upper end pipeline of the reflux box 505, and the lower end of the boosting box 501 is connected to the lower end pipeline of the reflux box 505.

[0032] like Figure 1 to Figure 8 As shown, the concave-convex detection unit 6 further includes a counterweight block 606 , which is fixedly disposed on a detection rod 603 rotatably connected to a detection wheel 605 .

[0033] like Figure 1 to Figure 8 As shown, the assisting grooves 3 and the secondary rolling components 4 are provided in multiple groups in a front-to-back linear array.

[0034] During specific use, the main pressure roller 2 performs preliminary flattening on the roadbed. As the roller body 1 continues to move forward, the secondary roller assembly 4 will detect the unevenness of the roadbed rolled by the main pressure roller 2, and adjust the downward pressure of the auxiliary pressure roller 504 according to the unevenness of the roadbed to perform secondary flattening.

[0035] During the movement of the machine body 1, when encountering a part of the protrusion that has not been initially flattened by the main pressure roller 2, the detection wheel 605 is lifted up by the protrusion of the roadbed and pulls the connected detection rod 603 and the middle rack 604 to move upward. Because the two sets of detection rods 603 and the middle rack 604 are arranged in a circumferential array on both sides of the middle gear 602, the detection rod 603 and the middle rack 604 connected to the speed connection shaft 607 will move downward under the meshing and pushing action of the middle gear 602.

[0036] The downward movement of the speed matching connecting shaft 607 will drive the gear pump 506 to move downward synchronously through the pumping gear fixedly connected thereto, and the fixed connection relationship between the gear pump 506 and the height limiting bracket 701 will drive the height limiting bracket 701, the motor 702, the distribution differential 703 and the elastic load wheel 705 to move downward synchronously. The elastic load wheel 705 always maintains a contact and fit relationship with the load block 706. When the elastic load wheel 705 moves downward, a certain amount of deformation occurs and the supporting force and friction force between the elastic load wheel 705 and the load block 706 are increased. The driving force output by the motor 702 is transmitted to the left output shaft 7033 and the right output gear 7032 on both sides through the distribution differential 703. When the load resistance on both sides of the left output shaft 7033 and the right output gear 7032 changes, the driving force output by the motor 702 is distributed more to the side with less resistance through the distribution differential 703. When the load resistance of the elastic load wheel 705 and the left output shaft 7033 increases, the driving force output by the motor 702 is distributed more to the right output gear 7032, and is transmitted to the speed matching connecting shaft 607 and a pumping gear in the gear pump 506 through the speed matching connecting gear 704, thereby increasing the rotation speed and power of the gear pump 506.

[0037] The pumping gear in the gear pump 506 rotates, and the liquid in the reflux box 505 is extracted through the pipeline at the lower end of the gear pump 506, and pumped to the upper end of the boost box 501 by the pipeline at the upper end of the gear pump 506, so that the boost orifice plate 502 is subjected to the fluid impact force from above. The motor 702 increases the speed and power of the gear pump 506 through the distribution differential 703, further increasing the fluid impact force on the boost orifice plate 502, so that the top fluid impact force on the auxiliary pressure roller 504 and the auxiliary roller frame 503 is enhanced. Therefore, the cooperation of the circulating boosting unit 5, the bump detection unit 6 and the differential distribution unit 7 enables the detection wheel 605 to be lifted up by the raised roadbed when encountering a bump on the roadbed, and the lifting degree of the detection wheel 605 is adjusted according to the bump degree of the roadbed. The middle gear 602 and the differential distribution unit 7 further increase the top fluid impact force on the boosting orifice plate 502, the auxiliary roller frame 503 and the auxiliary pressure roller 504, thereby increasing the contact pressure between the auxiliary pressure roller 504 and the roadbed, and improving the flattening effect of the auxiliary pressure roller 504.

[0038] Similarly, when encountering a partial depression on the roadbed, under the action of the counterweight block 606, the detection wheel 605 moves downward, thereby driving the speed matching connecting shaft 607 away from the middle gear 602 and moving upward, reducing the contact pressure and friction between the elastic load wheel 705 and the load block 706, and the distribution differential 703 reduces the output power of the gear pump 506, thereby reducing the contact pressure between the auxiliary pressure roller 504 and the roadbed, avoiding the depression from being subjected to greater pressure and further depression.

[0039] It is worth pointing out that the distribution differential 703 and the gear pump 506 are both commonly used mechanical transmission existing technologies, and their specific structures are not fully described in this application.

[0040] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A road roller for roadbed construction, characterized in that: The invention comprises a machine body (1), a main pressing roller (2) and a secondary pressing assembly (4), wherein the main pressing roller (2) is rotatably arranged at the right end of the machine body (1), an assisting groove (3) is opened at the bottom of the machine body (1), and the secondary pressing assembly (4) is arranged in the assisting groove (3), and the secondary pressing assembly (4) comprises a circulating pressurizing unit (5), a concave-convex detection unit (6) and a differential speed distribution unit (7).

2. A road roller for roadbed construction according to claim 1, characterized in that: The concave-convex detection unit (6) is arranged in the assisting groove (3), and comprises a middle platform (601), a middle gear (602), a detection rod (603), a middle rack (604), a detection wheel (605) and a speed matching connecting shaft (607). The middle platform (601) is fixedly arranged in the assisting groove (3), the middle gear (602) is rotatably arranged at the center of the middle platform (601), the detection rod (603) is vertically slidably arranged in the middle platform (601), and the middle rack (604) is arranged on the middle platform (601). ) is fixedly connected to the detection rod (603), the middle rack (604) is meshingly connected to the middle gear (602), the detection rod (603) and the middle rack (604) are each provided with two in a circular array relative to the central axis of the middle gear (602), the detection wheel (605) and the speed matching connecting shaft (607) are rotatably arranged at the ends of the two detection rods (603), the detection wheel (605) is located below the middle gear (602), and the speed matching connecting shaft (607) is located above the middle gear (602).

3. A road roller for roadbed construction according to claim 2, characterized in that: The differential distribution unit (7) is arranged in the assisting groove (3), and comprises a height-limiting bracket (701), a motor (702), a distribution differential (703), and a speed matching connecting gear (704); the height-limiting bracket (701) is vertically slidably arranged in the assisting groove (3); the motor (702) is fixedly arranged below the height-limiting bracket (701); the distribution differential (703) is arranged below the height-limiting bracket (701); and the distribution differential (703) is arranged below the height-limiting bracket (701). (703) comprises an input gear (7031), a right output gear (7032) and a left output shaft (7033), wherein the input gear (7031) is fixedly connected to the output end of the motor (702), the speed matching connecting gear (704) is fixedly arranged on the speed matching connecting shaft (607), the right output gear (7032) is meshedly connected to the speed matching connecting gear (704), and the left output shaft (7033) is coaxially arranged with the right output gear (7032).

4. A road roller for roadbed construction according to claim 3, characterized in that: The differential distribution unit (7) further comprises an elastic load wheel (705) and a load stopper (706); the left output shaft (7033) is fixedly connected to the elastic load wheel (705); the load stopper (706) is fixedly disposed in the assisting groove (3); and the load stopper (706) is fittedly connected to the elastic load wheel (705).

5. A road roller for roadbed construction according to claim 4, characterized in that: The circulating pressurizing unit (5) is arranged in the assisting groove (3), and the circulating pressurizing unit (5) comprises a pressurizing box (501), a pressurizing orifice plate (502), an auxiliary roller frame (503), an auxiliary pressure roller (504) and a gear pump (506). The pressurizing box (501) is fixedly arranged in the assisting groove (3), the pressurizing orifice plate (502) is vertically slidably arranged in the pressurizing box (501), the auxiliary roller frame (503) is vertically slidably penetrated and arranged at the bottom of the pressurizing box (501), the auxiliary pressure roller (504) is rotatably arranged at the bottom of the auxiliary roller frame (503), the gear pump (506) is fixedly arranged below the height limiting bracket (701), a pumping gear in the gear pump (506) is fixedly connected to the speed matching connecting shaft (607), and the upper end of the gear pump (506) is connected to the upper end pipeline of the pressurizing box (501).

6. A road roller for roadbed construction according to claim 5, characterized in that: The circulation boosting unit (5) further comprises a return box (505), wherein the return box (505) is fixedly arranged in the assisting tank (3), the lower end of the gear pump (506) is connected to the upper end pipeline of the return box (505), and the lower end of the boosting box (501) is connected to the lower end pipeline of the return box (505).

7. A road roller for roadbed construction according to claim 6, characterized in that: The concave-convex detection unit (6) further comprises a counterweight block (606), wherein the counterweight block (606) is fixedly arranged on a detection rod (603) rotatably connected to the detection wheel (605).

8. A road roller for roadbed construction according to claim 7, characterized in that: The auxiliary grooves (3) and the secondary rolling components (4) are both provided with multiple groups in a front-to-back linear array.

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