Road rolling device for highway construction and road rolling method thereof

Abstract

The invention relates to the technical field of road construction, in particular to a road rolling device for road construction and a road rolling method.The road rolling device comprises a front compression roller and a rear compression roller which are distributed front and back, and compression roller supporting arm assemblies are arranged at the two ends of the front compression roller and the two ends of the rear compression roller correspondingly; the front compression roller and the rear compression roller are supported in a rolling mode through the compression roller supporting arm assembly, and the main machine body is fixedly installed on the compression roller supporting arm assembly to control running of the front compression roller and the rear compression roller. According to the device, road rolling is achieved through the front pressing roller, meanwhile, whether protruding hard objects exist or not is judged according to the fluctuating track of the front pressing roller, the rear pressing roller is matched with the instant pressurizing assembly, when the rear pressing roller moves to the protruding hard objects, downward pressing force is greatly increased, and the protruding hard objects are pressed downwards and flattened in a targeted mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of highway construction, in particular to a road construction rolling device and a rolling method thereof. BACKGROUND

[0002] In the process of highway construction, the use of a rolling device is indispensable. The rolling device can pre-press the road surface to be flat, so as to facilitate subsequent construction such as asphalt paving. The rolling device generates high-frequency vibration through a vibrator, which is transmitted to the compaction roller, so that the roller and the ground produce high-frequency vibration. According to the principle of alternating shear strain in soil mechanics, the pores between soil particles are continuously reduced, and the particles of the soil and other base materials are rearranged, thereby improving the compactness of the roadbed and road surface. In actual construction, due to the existence of protruding hard objects such as rocks on the ground, the traditional rolling device may be difficult to press the larger protruding hard objects into place when the pressing force is not enough due to weight limitations, and it is necessary to roll multiple times or manually remove the protruding hard objects, which affects the construction efficiency. SUMMARY

[0003] The present application aims to provide a road construction rolling device and a rolling method thereof to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a road construction rolling device, comprising a front roller and a rear roller arranged in front and back, respectively, and a roller arm assembly arranged at both ends of the front roller and the rear roller, respectively, for rolling support of the front roller and the rear roller, a main body for driving control of the front roller and the rear roller by fixed installation with the roller arm assembly, a track sensor module symmetrically arranged on the roller arm assembly corresponding to both ends of the front roller for monitoring the undulating track of the front roller. A fixed slide shaft is arranged inside the rear roller, and both ends of the fixed slide shaft are fixed on the roller arm assembly. An offset adjusting sleeve is arranged outside the fixed slide shaft in a sliding manner. An axial driving assembly and an instantaneous pressure assembly are arranged on the offset adjusting sleeve. When the track sensor module detects that the front roller generates an undulating track in accordance with the set track, the axial driving assembly adjusts the position of the offset adjusting sleeve according to the height difference of the undulating track of the track sensor module at both ends of the front roller, so that the offset adjusting sleeve is closer to the side with higher undulating track. Then, after the rear roller moves to the undulating position of the front roller, the instantaneous pressure assembly increases the pressing force of the rear roller.

[0005] The axial driving assembly comprises a side wall hydraulic cylinder and an intermediate piston, the side wall hydraulic cylinder is fixedly installed with the deflection adjusting sliding sleeve, the intermediate piston is arranged inside the side wall hydraulic cylinder and in sealing contact with the inner wall surface of the side wall hydraulic cylinder, both ends of the intermediate piston are provided with connecting cylinder shafts, the connecting cylinder shafts are fixed on the pressure roller support arm assembly, the outside of the side wall hydraulic cylinder is provided with a hydraulic control nozzle in communication, and the deflection adjusting sliding sleeve is axially driven by changing the hydraulic pressure on both sides of the intermediate piston through the hydraulic control nozzle.

[0006] The instantaneous pressurizing assembly comprises a counterweight and an explosion cylinder body, the explosion cylinder body is fixedly installed on the deflection adjusting sliding sleeve, the counterweight is directly above the deflection adjusting sliding sleeve, the inside of the explosion cylinder body is provided with an impact piston, and the impact piston and the counterweight are fixedly connected with an impact shaft.

[0007] A limiting transverse plate is fixedly arranged on the counterweight, a limiting shaft is fixedly arranged on the deflection adjusting sliding sleeve, the limiting shaft penetrates through the limiting transverse plate for limiting cooperation, and the upward moving height of the counterweight relative to the deflection adjusting sliding sleeve is limited.

[0008] The inside of the explosion cylinder body is provided with an electric spark piece, and the side wall of the explosion cylinder body is embeddedly installed with a fuel nozzle, atomized fuel can be injected into the explosion cylinder body through the fuel nozzle, the electric spark piece is used for detonating and driving the impact piston to move, so that the counterweight moves upward relative to the deflection adjusting sliding sleeve. Therefore, the explosion cylinder body is also provided with a normally closed gas exchange assembly, the inside of the explosion cylinder body is in a normally closed state, and the explosion cylinder body is in communication with the outside only when there is positive pressure gas input.

[0009] The normally closed gas exchange assembly comprises a bottom circular cavity, an air inlet plug column, an air outlet plug column and a separation plug part, the bottom circular cavity is arranged in the bottom wall of the explosion cylinder body, the air inlet plug column, the air outlet plug column and the separation plug part are arranged inside the bottom circular cavity and in sealing contact with the inner wall surface of the bottom circular cavity.

[0010] The air inlet plug column, the air outlet plug column and the separation plug part are fixedly connected with an axle body, and the separation plug part is between the air inlet plug column and the air outlet plug column.

[0011] One end of the air outlet plug column is provided with a reset spring, the bottom of the explosion cylinder body is externally and throughly provided with an air outlet through groove, the air outlet through groove is in communication with the outside atmosphere through the bottom circular cavity, the bottom of the explosion cylinder body is provided with an air inlet groove, the air inlet groove is in communication with the bottom circular cavity, and the end of the bottom circular cavity is provided with an air inlet cavity in communication.

[0012] Under the elastic force of the reset spring, the exhaust plug column is in the corresponding position of the exhaust through groove, and the exhaust through groove is transversely closed; the air inlet plug column is in the corresponding position of the air inlet groove, and the air inlet groove is closed; when the positive pressure gas is input in the air inlet cavity, the gas pressure pushes the air inlet plug column to move axially, so that the reset spring is compressed, and the air inlet cavity is communicated with the inside of the explosion cylinder through the air inlet groove, and the exhaust through groove is in a communication state through the gap between the exhaust plug column and the partition plug part.

[0013] The energy conversion assembly is further arranged between the counterweight and the deflection adjusting sliding sleeve, and the gravitational potential energy of the counterweight can be converted into other forms of energy through the energy conversion assembly.

[0014] The energy conversion assembly comprises an energy conversion cylinder and a conversion piston, the energy conversion cylinder is fixedly installed with the deflection adjusting sliding sleeve, the conversion piston is arranged in the energy conversion cylinder and in sealing contact with the inner wall surface of the energy conversion cylinder, a connecting pressure arm is fixedly arranged on the conversion piston and fixedly installed with the counterweight.

[0015] A bottom air hole is formed through the bottom of the energy conversion cylinder, a one-way cover plate is arranged on the bottom air hole, a spring piece structure is arranged below the one-way cover plate, the one-way cover plate is subjected to downward elastic force of the spring piece structure, so that the one-way cover plate has a downward movement trend, and the bottom air hole is one-way closed by the one-way cover plate. A motor lifter is fixedly arranged below the energy conversion cylinder, a lifting push shaft capable of extending and retracting is arranged on the motor lifter, the lifting push shaft is controlled to be lifted and extended out by the motor lifter, the one-way cover plate is pried open, and the bottom air hole is in a normally open state.

[0016] A road rolling method, which adopts a road rolling device for road construction, comprises the following steps: Step one: the fluctuation track of the front roller is monitored by a track sensor module; Step two: after the fluctuation track generated by the front roller pressing the protruding hard object is monitored, whether the rear roller travels onto the protruding hard object is judged according to the axle distance between the front roller and the rear roller and the driving speed; Step three: the down pressure of the rear roller is increased by the instantaneous pressure increasing assembly, and the protruding hard object is subjected to targeted down pressing.

[0017] Compared with the prior art, the method has the beneficial effects that: 1. The road construction rolling device can determine whether there is a protruding hard object by the undulating track of the front roller while rolling, and the rear roller moves to the protruding hard object, and the pressing force is greatly increased by the instantaneous pressing assembly, so that the protruding hard object is pressed flat, compared with the rolling device in the prior art, the protruding hard object can be pressed flat more effectively, and when the protruding hard object is concentrated on one side, the undulating track height difference can be used to determine which side the protruding hard object is concentrated on, and the axial adjustment sleeve is adjusted by the axial driving assembly, so that the instantaneous pressing force generated by the instantaneous pressing assembly is more concentrated on the protruding hard object, and the flattening performance is improved.

[0018] 2. The instantaneous pressing assembly can greatly increase the pressing force of the rear roller by the reaction force generated by the explosion driving counterweight, so that the peak pressing force is extremely high, and some protruding hard objects such as rocks can be pressed flat.

[0019] 3. The normally closed air exchange assembly can realize air intake and exhaust when communicating with the outside world, and keep the normally closed state when explosion driving, and the opening and closing control of the air intake groove and the exhaust through groove is realized by the air pressure when air exchange, and the explosion pressure will not affect the normally closed air exchange assembly, so that the structure is simple and stable, and the durability is improved while realizing stable air exchange.

[0020] 4. The energy conversion assembly can convert part of the gravitational potential energy of the counterweight after being lifted by the reaction force into the internal energy of the gas in the energy conversion cylinder, so that the increase range of the pressing force of the rear roller is reduced when the counterweight is reset and lowered; since the protruding hard object has been passed, the impact generated by the downward movement of the counterweight will cause the pressing force of the rear roller to increase to a certain extent, and the once roller-shaped groove left on the ground will affect the flatness. And the energy conversion assembly can be controlled to open and close, and the energy conversion assembly can be closed when not needed to eliminate the influence. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic view of the overall structure of the application.

[0022] Figure 2 It is a front view of the overall structure of the application.

[0023] Figure 3 It is a three-dimensional half-section view of the overall structure of the application.

[0024] Figure 4 It is a three-dimensional half-section view of the overall structure of the application.

[0025] Figure 5For the back of the roller shaft axial three-dimensional half section.

[0026] Figure 6 For the bias adjustment sleeve parts schematic diagram.

[0027] Figure 7 For the explosion cylinder body place three-dimensional half section.

[0028] Figure 8 For the explosion cylinder body place three-dimensional half section local front view.

[0029] Figure 9 For the energy conversion cylinder place three-dimensional half section local front view.

[0030] Figure: 1, the front roller; 2, the back roller; 3, the roller arm assembly; 4, the main body; 5, the track sensor module; 6, fixed slide shaft; 7, the bias adjustment sleeve; 701, side wall hydraulic cylinder; 702, intermediate piston; 703, connecting cylinder shaft; 704, hydraulic control nozzle; 8, counterweight; 801, explosion cylinder body; 802, impact piston; 803, impact shaft; 804, limit plate; 805, limit shaft; 806, electric spark; 807, fuel nozzle; 808, bottom round cavity; 809, air inlet plug column; 810, exhaust plug column; 811, partition plug; 812, reset spring; 813, exhaust through slot; 814, air inlet groove; 815, air inlet cavity; 9, energy conversion cylinder; 901, conversion piston; 902, connecting pressure arm; 903, bottom air hole; 904, one-way cover plate; 905, spring structure; 906, electric lift; 907, lifting shaft; 101, hydraulic motor; 102, eccentric shaft; 103, eccentric block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Please refer to Figures 1 to 9 The present application provides a technical solution: a road construction rolling device, comprising front and rear distribution of the front roller 1 and the back roller 2, the front roller 1 and the back roller 2 are both cylindrical steel cylinder, the front roller 1 and the back roller 2 are provided with roller arm assembly 3 at both ends, the front roller 1 and the back roller 2 are supported by the roller arm assembly 3, such as Figure 3 and Figure 5As shown in the front and rear rollers 1 and 2 are provided with eccentric vibration assembly, through the eccentric vibration assembly makes the front and rear rollers 1 and 2 in the process of vibration.

[0033] The eccentric vibration assembly comprises a hydraulic motor 101, an eccentric shaft 102 and an eccentric block 103, the hydraulic motor 101 is fixedly installed in the roller arm assembly 3, the eccentric shaft 102 is respectively located at the shaft center position of the front and rear rollers 1 and 2, the eccentric shaft 102 is driven to rotate by the hydraulic motor 101, and the eccentric block 103 is fixedly installed on the eccentric shaft 102 by a pin, and impact vibration is generated by the rotation of the eccentric shaft 102.

[0034] It also comprises a main body 4, which is the main part of the road roller in the prior art, comprising an engine system, an operating room and the like, which will not be described herein. The main body 4 controls the travel of the front and rear rollers 1 and 2 by being fixedly installed with the roller arm assembly 3, and the roller arm assembly 3 corresponding to the two ends of the front roller 1 is respectively provided with a track sensor module 5, which monitors the fluctuation track of the front roller 1; the track sensor module 5 is composed of an acceleration sensor and a gyroscope, which measures the linear acceleration and angular velocity of the front roller 1 in the vertical direction, and calculates the vertical motion track by combining the algorithm.

[0035] The inside of the rear roller 2 is provided with a fixed slide shaft 6, the two ends of the fixed slide shaft 6 are welded and fixed on the roller arm assembly 3, and the outside of the fixed slide shaft 6 is slidably provided with a deflection adjusting sleeve 7, as shown in Figure 5 and Figure 6 As shown in the deflection adjusting sleeve 7 is in the shape of a circular tube, a cylinder is integrally welded on the inner wall thereof, the fixed slide shaft 6 penetrates through the cylinder, so that the deflection adjusting sleeve 7 can slide axially along the fixed slide shaft 6, and the deflection adjusting sleeve 7 and the fixed slide shaft 6 can bear the impact force on the rear roller 2.

[0036] The deflection adjusting sleeve 7 is provided with an axial driving assembly and an instantaneous pressure assembly; when the track sensor module 5 detects that the front roller 1 generates a fluctuation track in accordance with the setting, the axial driving assembly adjusts the position of the deflection adjusting sleeve 7 according to the height difference of the fluctuation track of the track sensor module 5 at the two ends of the front roller 1, so that the deflection adjusting sleeve 7 is closer to the side with higher fluctuation track, and then the instantaneous pressure assembly increases the pressing force of the rear roller 2 after the rear roller 2 moves to the fluctuation position of the front roller 1.

[0037] The axial driving assembly comprises a side wall hydraulic cylinder 701 and an intermediate piston 702, the side wall hydraulic cylinder 701 is fixedly installed by welding with the deflection adjusting sliding sleeve 7, the intermediate piston 702 is arranged in the inside of the side wall hydraulic cylinder 701 and is in sealing contact with the inner wall surface of the side wall hydraulic cylinder 701, both ends of the intermediate piston 702 are provided with a connecting cylinder shaft 703, the connecting cylinder shaft 703 is fixedly welded on the pressure roller supporting arm assembly 3, the outside of the side wall hydraulic cylinder 701 is provided with a hydraulic control nozzle 704 in communication, the hydraulic pressure on both sides of the intermediate piston 702 is changed through the hydraulic control nozzle 704, so that the deflection adjusting sliding sleeve 7 is axially driven.

[0038] The instantaneous pressurizing assembly comprises a counterweight 8 and an explosion cylinder body 801, the explosion cylinder body 801 is fixedly installed by welding on the deflection adjusting sliding sleeve 7, the counterweight 8 is directly above the deflection adjusting sliding sleeve 7, the inside of the explosion cylinder body 801 is provided with an impact piston 802, the impact piston 802 and the counterweight 8 are fixedly connected by welding and provided with an impact shaft 803.

[0039] The counterweight 8 is provided with a limiting transverse plate 804 fixedly welded thereon, the deflection adjusting sliding sleeve 7 is provided with a limiting shaft 805 fixedly welded thereon, the limiting shaft 805 penetrates through the limiting transverse plate 804 for limiting cooperation, so that the upward moving height of the counterweight 8 relative to the deflection adjusting sliding sleeve 7 is limited.

[0040] The inside of the explosion cylinder body 801 is provided with an electric spark piece 806, the electric spark piece 806 can generate electric sparks after being electrified, which is used to detonate atomized fuel, the side wall of the explosion cylinder body 801 is embeddedly installed with a fuel nozzle 807, the atomized fuel can be injected into the explosion cylinder body 801 through the fuel nozzle 807, the impact piston 802 is driven to move by the detonation of the electric spark piece 806, so that the counterweight 8 moves upward relative to the deflection adjusting sliding sleeve 7; therefore, the explosion cylinder body 801 is also provided with a normally closed gas exchange assembly, the inside of the explosion cylinder body 801 is in a normally closed state, and the explosion cylinder body 801 is in communication with the outside only when there is positive pressure gas input.

[0041] The normally closed gas exchange assembly comprises a bottom circular cavity 808, an air inlet plug column 809, an air outlet plug column 810 and a partition plug part 811, the bottom circular cavity 808 is opened in the bottom wall of the explosion cylinder body 801, the air inlet plug column 809, the air outlet plug column 810 and the partition plug part 811 are all arranged in the inside of the bottom circular cavity 808 and are in sealing contact with the inner wall surface of the bottom circular cavity 808.

[0042] The air inlet plug column 809, the air outlet plug column 810 and the partition plug part 811 are fixedly connected by shafts, and the partition plug part 811 is between the air inlet plug column 809 and the air outlet plug column 810.

[0043] One end of the exhaust plug column 810 is provided with a reset spring 812, and the bottom of the explosion cylinder body 801 is provided with an exhaust through slot 813. The exhaust through slot 813 is communicated with the outside atmosphere through the bottom circular cavity 808. The bottom of the explosion cylinder body 801 is provided with an air inlet slot 814, which is communicated with the bottom circular cavity 808. The end of the bottom circular cavity 808 is provided with an air inlet cavity 815.

[0044] Under the elastic force of the reset spring 812, the exhaust plug column 810 is located at the corresponding position of the exhaust through slot 813, and the exhaust through slot 813 is transversely closed. The air inlet plug column 809 is located at the corresponding position of the air inlet slot 814, and the air inlet slot 814 is closed. When the positive pressure gas is input into the air inlet cavity 815, the gas pressure pushes the air inlet plug column 809 to move axially, so that the reset spring 812 is compressed. At this time, the air inlet cavity 815 is communicated with the inside of the explosion cylinder body 801 through the air inlet slot 814, and the exhaust through slot 813 is in a communication state through the gap between the exhaust plug column 810 and the partition plug part 811.

[0045] The energy conversion assembly is further arranged between the counterweight 8 and the deflection adjusting sliding sleeve 7, and the gravitational potential energy of the counterweight 8 can be converted into other forms of energy through the energy conversion assembly. The energy conversion assembly comprises an energy conversion cylinder 9 and a conversion piston 901. The energy conversion cylinder 9 is fixedly installed by welding with the deflection adjusting sliding sleeve 7. The conversion piston 901 is arranged in the inside of the energy conversion cylinder 9 and is in sealing contact with the inner wall surface of the energy conversion cylinder 9. A connecting pressure arm 902 is fixedly arranged on the conversion piston 901 and is fixedly installed by welding with the counterweight 8.

[0046] A bottom air hole 903 is arranged through the bottom of the energy conversion cylinder 9. A one-way cover plate 904 is arranged on the bottom air hole 903. A spring piece structure 905 is arranged below the one-way cover plate 904. The one-way cover plate 904 has a downward movement trend by applying a downward elastic force to the one-way cover plate 904 through the spring piece structure 905, so that the bottom air hole 903 is one-way closed by the one-way cover plate 904. An electric lifting device 906 is fixedly arranged below the energy conversion cylinder 9. A lifting push shaft 907 capable of telescopic movement is arranged on the electric lifting device 906. The electric lifting device 906 is composed of a motor, a speed reduction gear set and a rack. The torque of the motor is amplified through the speed reduction gear set, and the rack is driven to move linearly. The rack and the lifting push shaft 907 are fixed by bolts, so that the lifting push shaft 907 can be controlled to extend and retract. The lifting push shaft 907 is controlled to extend and retract by the electric lifting device 906, and the one-way cover plate 904 is pried open, so that the bottom air hole 903 is in a normally open state.

[0047] A road rolling method is provided, which adopts a road rolling device for road construction, and comprises the following steps: Step one: monitoring the fluctuating track of the front roller 1 by the track sensor module 5; Step two: after monitoring the undulating track caused by the front roller 1 pressing the protruding hard object, it is determined whether the rear roller 2 moves to the protruding hard object according to the distance between the front roller 1 and the rear roller 2 and the driving speed; Step three: the down pressure of the rear roller 2 is increased by the instantaneous pressure assembly, and the protruding hard object is targeted.

[0048] As shown in the present application Figure 1 When the protruding hard object exists and it is difficult to be flattened by the down pressure of the road roller itself during the process of the road roller rolling, the front roller 1 will undulate up and down when rolling through the protruding hard object, and the track sensor module 5 monitors the undulating track of the front roller 1.

[0049] Since the track sensor module 5 is provided with two groups, and is respectively located at both ends of the front roller 1, when the protruding hard object is biased to one side, it will cause the undulating track height of one side of the front roller 1 to be higher, and the undulating track height of the other side to be lower; when the protruding hard object is located in the middle position of the front roller 1, the front roller 1 undulates up and down as a whole, and the undulating track height of both ends is close. According to the above principle, the position bias of the protruding hard object can be determined according to the height difference of the undulating track of both ends of the front roller 1.

[0050] Through the hydraulic input into the hydraulic control nozzle 704, cooperating with the intermediate piston 702, the side wall hydraulic cylinder 701 and the intermediate piston 702 are relatively axially moved, and then the axial driving of the bias adjusting sleeve 7 is realized, so that the bias adjusting sleeve 7 moves to the side where the protruding hard object is biased, and when the protruding hard object is in the middle, the bias adjusting sleeve 7 remains in the middle position.

[0051] According to the driving speed of the road roller at this time, combined with the distance between the front roller 1 and the rear roller 2, when the rear roller 2 moves to the protruding hard object, as shown in Figure 7 and Figure 8 The fuel nozzle 807 instantaneously sprays atomized fuel, and is ignited by the electric spark piece 806. The explosion pressure drives the impact piston 802 to rise, and the propelling force generated by the explosion acts on the counterweight 8, and the reaction force is downward. The reaction force is transmitted in turn through the bias adjusting sleeve 7, the fixed slide shaft 6 and the roller arm assembly 3, so that the down pressure of the rear roller 2 is instantaneously greatly increased, and the protruding hard object is flattened.

[0052] Then, the oxygen-containing compressed air is input through the air inlet cavity 815. In use, the air inlet cavity 815 is communicated with the external compressed air pump, and the compressed air enters through the air inlet cavity 815 to drive the air inlet plug column 809 to move axially. At this time, the air outlet plug column 810 and the separation plug part 811 are synchronously moved to the left, as shown in Figure 8As shown in . At this time, the compressed air enters the interior of the explosion cylinder 801 through the air inlet groove 814, located in the area below the impact piston 802. The explosion exhaust gas is discharged through the exhaust through groove 813, completing the ventilation. After the compressed gas input of the air inlet cavity 815 is stopped, under the reset elastic force of the reset spring 812, the air inlet plug 809 and the exhaust plug 810 are reset to the position shown in Figure 8 In the state shown in , the exhaust through-slot 813 and the air inlet slot 814 are closed, waiting for the next cycle.

[0053] In the process from the explosion of the explosion cylinder 801 to pushing the counterweight 8 upward and using the reaction force to greatly increase the downward pressure of the rear pressure roller 2, the counterweight 8 will move upward relative to the deflection adjustment sleeve 7 due to the explosion. When the explosion pressure disappears, the counterweight 8 will inevitably move downward and reset. The counterweight 8 hits the explosion cylinder 801, generating downward pressure, which is transmitted through the deflection adjustment sleeve 7 and the fixed slide shaft 6 and other structures, and will also cause the downward pressure of the rear pressure roller 2 to increase instantly. When necessary, the secondary increase in the downward pressure of the rear pressure roller 2 can be ignored. Under some working conditions, since the rear pressure roller 2 has already moved past the protruding hard object, it is usually not necessary to increase the downward pressure of the rear pressure roller 2 again. At this time, it is easy to cause the flat road surface to be pressed into an arc groove again.

[0054] The present invention Figure 7 and Figure 9 As shown in , when the downward pressure of the rear pressure roller 2 needs to be increased a second time, the electric lifter 906 drives the lifting push shaft 907 to extend, so that the lifting push shaft 907 pushes open the one-way cover 904. At this time, the bottom of the energy conversion cylinder 9 is in a normally open state, and the up and down movement of the conversion piston 901 is not restricted.

[0055] When the downward pressure of the rear pressure roller 2 is no longer needed to be increased, the lifting push shaft 907 does not extend to push open the one-way cover plate 904; thus, when the counterweight block 8 is pushed upward by the explosive driving force, the conversion piston 901 moves upward synchronously, so that the gas is sucked into the energy conversion cylinder 9 through the bottom air hole 903, and when the counterweight block 8 moves downward and resets, the conversion piston 901 moves downward synchronously. At this time, due to the one-way sealing effect of the one-way cover plate 904, the conversion piston 901 will squeeze and work on the gas in the energy conversion cylinder 9, thereby converting part of the gravitational potential energy of the counterweight block 8 into the internal energy of the gas in the energy conversion cylinder 9, and the gas in the energy conversion cylinder 9 heats up, thereby weakening the peak intensity of the downward pressure of the rear pressure roller 2 that increases again; after the counterweight block 8 is stable, the lifting push shaft 907 pushes open the one-way cover plate 904 to exhaust, so that the counterweight block 8 is completely reset.

[0056] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A road roller device for highway construction, comprising a front roller and a rear roller arranged in a front-to-back distribution, with roller support arm assemblies provided at both ends of the front roller and the rear roller, respectively, for rolling support of the front roller and the rear roller by the roller support arm assemblies, and a main body, which is fixedly mounted to the roller support arm assemblies to control the movement of the front roller and the rear roller, characterized in that: Track sensor modules are symmetrically provided on the roller support arm assemblies corresponding to the two ends of the front roller, and the ups and downs of the front roller are monitored by the track sensor modules; A fixed sliding shaft is provided inside the rear pressure roller, and both ends of the fixed sliding shaft are fixed to the pressure roller support arm assembly. A deflection adjustment sliding sleeve is provided on the outside of the fixed sliding shaft, and an axial drive assembly and an instantaneous pressure assembly are provided on the deflection adjustment sliding sleeve. When the trajectory sensor module detects that the front pressure roller produces an undulating trajectory that meets the set requirements, the axial drive component adjusts the position of the deflection adjustment sleeve according to the height difference of the undulating trajectory of the trajectory sensor module at both ends of the front pressure roller, so that the deflection adjustment sleeve is closer to the side with higher undulating trajectory. Then, after the rear pressure roller moves to the undulating position of the front pressure roller, the instantaneous pressure component increases the downward force of the rear pressure roller.

2. A road roller device for highway construction according to claim 1, characterized in that: The axial drive assembly includes a side wall hydraulic cylinder and an intermediate piston. The side wall hydraulic cylinder is fixedly installed with the deflection adjustment sleeve. The intermediate piston is arranged inside the side wall hydraulic cylinder and is in sealing contact with the inner wall surface of the side wall hydraulic cylinder. Connecting cylinder shafts are provided at both ends of the intermediate piston. The connecting cylinder shafts are fixed on the pressure roller support arm assembly. A hydraulic control nozzle is provided on the outside of the side wall hydraulic cylinder. The hydraulic pressure on both sides of the intermediate piston is changed by the hydraulic control nozzle to axially drive the deflection adjustment sleeve.

3. A road roller for highway construction according to claim 1, characterized in that: The instantaneous pressurization assembly includes a counterweight block and an explosion cylinder body. The explosion cylinder body is fixedly mounted on the deflection adjustment sleeve. The counterweight block is located directly above the deflection adjustment sleeve. An impact piston is provided inside the explosion cylinder body. An impact shaft is fixedly connected between the impact piston and the counterweight block.

4. A road roller for highway construction according to claim 3, characterized in that: A limit transverse plate is fixedly provided on the counterweight block, and a limit shaft is fixedly provided on the deflection adjustment sleeve. The limit shaft is inserted through the limit transverse plate for limit fitting, so that the upward movement height of the counterweight block relative to the deflection adjustment sleeve is limited.

5. A road roller for highway construction according to claim 3, characterized in that: An electric spark piece is provided inside the explosion cylinder, and a fuel nozzle is embedded in the side wall of the explosion cylinder. Atomized fuel can be sprayed into the explosion cylinder through the fuel nozzle. The electric spark piece is detonated to drive the impact piston to move, so that the counterweight block moves upward relative to the deflection adjustment sleeve; Therefore, the explosion cylinder is also provided with a normally closed ventilation component, which makes the interior of the explosion cylinder in a normally closed state. The explosion cylinder is connected to the outside world only when and only when positive pressure gas is input.

6. A road roller for highway construction according to claim 5, characterized in that: The normally closed ventilation assembly includes a bottom circular cavity, an air intake plug, an exhaust plug and a separating plug. The bottom circular cavity is opened in the bottom wall of the explosion cylinder. The air intake plug, the exhaust plug and the separating plug are all arranged inside the bottom circular cavity and are in sealing contact with the inner wall surface of the bottom circular cavity.

7. A road roller for highway construction according to claim 6, characterized in that: The air intake plug, the air exhaust plug and the separation plug are fixedly connected to each other through a shaft, and the separation plug is located between the air intake plug and the air exhaust plug.

8. A road roller for highway construction according to claim 6, characterized in that: A return spring is provided at one end of the exhaust plug, and an exhaust through-groove is opened outwardly at the bottom of the explosion cylinder body, and the exhaust through-groove is connected to the outside atmosphere through the bottom circular cavity. An air intake groove is opened at the bottom of the explosion cylinder body, and the air intake groove is connected to the bottom circular cavity, and the end of the bottom circular cavity is connected with an air intake cavity.

9. A road roller for highway construction according to claim 8, characterized in that: Pushed by the elastic force of the return spring, the exhaust plug is in the corresponding position of the exhaust through-groove, and the exhaust through-groove is cross-sectionally closed; the intake plug is in the corresponding position of the intake groove, and the intake groove is blocked and closed; when positive pressure gas is input into the intake cavity, the gas pressure pushes the intake plug to move axially, so that the return spring is compressed. At this time, the intake cavity is connected with the interior of the explosion cylinder through the intake groove, and the exhaust through-groove is in a connected state through the gap between the exhaust plug and the partition plug.

10. A road roller device for highway construction according to claim 3, characterized in that: An energy conversion component is further provided between the counterweight block and the deflection adjustment sleeve, and the energy conversion component can convert the gravitational potential energy of the counterweight block into other forms of energy.

11. A road roller for highway construction according to claim 10, characterized in that: The energy conversion assembly includes an energy conversion cylinder and a conversion piston. The energy conversion cylinder is fixedly installed with the deflection adjustment sleeve. The conversion piston is arranged inside the energy conversion cylinder and is in sealing contact with the inner wall surface of the energy conversion cylinder. A connecting pressure arm is fixedly provided on the conversion piston, and the connecting pressure arm is fixedly installed with the counterweight block.

12. A road roller device for highway construction according to claim 11, characterized in that: A bottom air hole is formed through the bottom of the energy conversion cylinder, a one-way cover is provided on the bottom air hole, and a spring structure is provided below the one-way cover. The spring structure applies a downward elastic force to the one-way cover, so that the one-way cover has a downward movement trend, so that the bottom air hole is unidirectionally closed by the one-way cover; An electric lift is fixedly installed directly below the energy conversion cylinder. The electric lift is provided with a telescopic lifting push shaft. The electric lift controls the lifting push shaft to be lifted and extended, which can push open the one-way cover plate and keep the bottom air hole in a normally open state.

13. A road compacting method, the method using the road compacting device for highway construction according to any one of claims 1 to 12, characterized in that: The following steps are involved: Step 1: Monitor the undulating trajectory of the front pressure roller through the trajectory sensor module; Step 2: After monitoring the undulating trajectory of the front pressure roller when it presses against the raised hard object, determine whether the rear pressure roller has moved onto the raised hard object based on the wheelbase between the front and rear pressure rollers and the driving speed; Step 3: Increase the downward pressure of the rear pressure roller through the instantaneous pressure component to press down on the protruding hard objects.

Images