Ground smoothing machine for road construction

Abstract

The application relates to the field of road construction engineering equipment, in particular to a ground grinding machine for road construction, which solves the problem of poor adaptability of the existing grinding machine to high-low pavements. The grinding machine comprises a grinding mechanism and a bearing part for mounting the grinding mechanism. The grinding mechanism comprises a rotating support, a power motor and a speed reducer arranged at the upper end of the rotating support, and a main grinding disc rotatably mounted at the lower end of the rotating support. A central shaft is arranged at the center of the main grinding disc, and the central shaft is in transmission connection with the output end of the speed reducer. The rotating support extends outwardly and is provided with a plurality of arm assemblies. Each arm assembly comprises a main arm, a ball joint hinge arranged at the free end of the main arm, a sub-arm fixedly connected to the ball joint hinge, a joint bearing arranged at the tail end of the sub-arm, a sub-rotating shaft fixedly connected to each joint bearing, and a sub-grinding disc fixedly connected to each sub-rotating shaft. The application is applied to the grinding process in road construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of road construction engineering equipment, in particular to a ground grinding machine for road construction. BACKGROUND

[0002] The ground grinding machine runs through the whole process of construction, reconstruction, repair and detection in road construction, and the core functions include surface leveling, defect repair, quality control and performance improvement. The specific process needs to be flexibly applied in combination with factors such as road type, construction stage and technical requirements.

[0003] In the prior art, such as the technical solution with the application publication number CN 109281243 A, the basic structure of the currently used grinding machine is shown, specifically a road engineering construction pavement grinding device, which comprises a fixed plate, the both sides of the outer wall of the fixed plate are rotatably connected with moving wheels near the bottom, and the number of moving wheels is four, one side of the outer wall of the fixed plate is provided with a push rod, and the top outer wall of the push rod is engraved with anti-skid lines, a rectangular slot is opened on the bottom outer wall of the fixed plate, and hydraulic rods are arranged on both sides of the top inner wall of the rectangular slot, support plates are arranged on the bottom outer walls of the two hydraulic rods, a first recess is opened on one side of the bottom outer wall of the support plate, a first bearing is arranged on the inner wall of the first recess, a first rotating shaft is rotatably connected to the inner wall of the first bearing, a grinding disc is arranged on the bottom outer wall of the first rotating shaft, and protrusions are arranged at equal distances on the bottom outer wall of the grinding disc, a first driven gear is arranged on the outer wall of the first rotating shaft, a counterbore is opened on the bottom outer wall of the support plate at the middle position, a third bearing is arranged on the inner wall of the counterbore, a rotating rod is rotatably connected to the inner wall of the third bearing, a cleaning plate is arranged on the bottom outer wall of the rotating rod, a cleaning brush is arranged on the bottom outer wall of the cleaning plate, a second recess is opened on one side of the bottom outer wall of the support plate away from the first recess, a second bearing is arranged on the inner wall of the second recess, a second rotating shaft is rotatably connected to the inner wall of the second bearing, and a polishing disc is arranged on the bottom outer wall of the second rotating shaft. A second driven gear is arranged on the outer wall of the second rotating shaft.

[0004] As for the current equipment, the coverage of a single grinding disc is limited, which affects the efficiency, and moreover, for the case where the road surface height is not uniform, the large-size grinding disc cannot be adaptively adjusted, so that the smooth grinding construction cannot be guaranteed. SUMMARY

[0005] Therefore, the present application provides a ground grinding machine for road construction, which solves the problem of insufficient adaptability of the existing grinding machine to high-low road surfaces.

[0006] To achieve the above-mentioned purpose, the present application is realized by the following technical solutions:

[0007] The utility model provides a ground grinder for road construction, which comprises a grinding mechanism and a carrier for mounting the grinding mechanism, wherein the grinding mechanism comprises a rotating support, a power motor and a speed reducer arranged at the upper end of the rotating support, and a main grinding disc rotatably mounted at the lower end of the rotating support, wherein a central shaft is arranged at the center of the main grinding disc, and the central shaft is in transmission connection with the output end of the speed reducer.

[0008] Each of the branch arm assemblies comprises a main arm, a ball joint arranged at the free end of the main arm, a sub-arm fixed to the ball joint, a joint bearing arranged at the end of the sub-arm, a sub-rotating shaft fixed to each of the joint bearings, and a sub-grinding disc fixed to each of the sub-rotating shafts.

[0009] A central transmission wheel is arranged on the central shaft, and a sub-transmission wheel is arranged on each of the sub-rotating shafts, wherein a synchronous unit is arranged around the central transmission wheel and each of the sub-transmission wheels to realize synchronous transmission.

[0010] Preferably, a retaining elastic member is fixed between the main arm and the sub-arm to keep the sub-arm in an inclined downward state to fit the ground.

[0011] Preferably, at least one compression wheel for fastening the synchronous unit is arranged at the lower end of the rotating support.

[0012] Preferably, the carrier comprises a carrier support, two moving wheels arranged at the lower end of the carrier support, and a push-pull handrail arranged at the upper end of the carrier support.

[0013] Preferably, the carrier is a vehicle body, a lifting assembly is arranged on the carrier, and the grinding mechanism is arranged on the lifting assembly.

[0014] Preferably, a water tank and a spray pipe in communication with the water tank are arranged on the rotating support.

[0015] Preferably, replaceable abrasive materials are arranged at the lower end of the main grinding disc and the sub-grinding disc.

[0016] Preferably, the synchronous unit is a transmission belt or a transmission chain.

[0017] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0018] The ball joint of the branch arm assembly is combined with the joint bearing in the technical solution, multi-dimensional angle self-adaptive adjustment of the sub-grinding disc is realized, a 'center + periphery' composite grinding structure is formed with the main grinding disc, the sub-arm realizes radial offset through the ball joint, the joint bearing allows axial torsion, the sub-grinding disc can automatically adapt to the ground undulation (such as construction height difference), the ground adhesion is improved, the problems of local suspension or excessive wear caused by uneven ground of the traditional rigid grinding disc are avoided, and uniform distribution of the grinding pressure is ensured; the main grinding disc with a large size is combined with a plurality of small-size sub-grinding discs, the effective working surface is expanded, the single grinding coverage area is increased by 30%-50% compared with the single grinding disc, and the operation efficiency is optimized; after the size of the sub-grinding disc is reduced, the overall equipment weight is reduced, and the operation and transportation are facilitated; the synchronous transmission unit ensures that the rotation speeds of the main grinding disc and the sub-grinding disc are synchronous, uneven grinding marks caused by speed difference are avoided, and the flexibility of the equipment is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the device of the embodiment one of the application.

[0020] Figure 2 It is a distribution structure schematic view (top view direction) of the main grinding disc and the sub-grinding disc in the embodiment one of the application.

[0021] Figure 3 It is an installation structure schematic view of the grinding material at the bottom of the main grinding disc in the embodiment one of the application.

[0022] Figure 4 It is a whole structure schematic view of the device of the embodiment two of the application.

[0023] The drawings show that: 1, a grinding mechanism; 11, a rotating support; 111, a pressing wheel; 12, a power motor; 13, a main grinding disc; 131, a center shaft; 132, a center transmission wheel; 133, a clamping block group; 14, a sub-grinding disc; 15, a main arm; 151, a ball joint; 152, a sub-arm; 153, a joint bearing; 154, a sub-transmission wheel; 155, a synchronous unit; 16, a retaining elastic member; 17, a water tank; 171, a spray pipe; 2, a bearing support; 21, a moving wheel; 22, a push-pull handrail; 3, a vehicle body; 31, an installation platform; 32, a lifting assembly. DETAILED DESCRIPTION

[0024] The embodiments of the application will be described in detail below with reference to specific embodiments, so that the application can be fully understood and implemented by means of technical means to solve technical problems and achieve technical effects. Embodiment one

[0025] Reference Figure 1 And Figure 2The utility model provides a ground grinder for road construction, which comprises a grinding mechanism 1 and a carrier for mounting the grinding mechanism 1, wherein the grinding mechanism 1 comprises a rotating support 11, a power motor 12 and a speed reducer arranged at the upper end of the rotating support 11, and a main grinding disc 13 rotatably mounted at the lower end of the rotating support 11, wherein the center of the main grinding disc 13 is provided with a central shaft 131, and the central shaft 131 is in transmission connection with the output end of the speed reducer.

[0026] The rotating support 11 extends outwardly with two arm assemblies, each of which comprises a main arm 15, a ball joint 151 mounted at the free end of the main arm 15, a sub-arm 152 fixedly connected to the ball joint 151, and an articulation bearing 153 arranged at the end of the sub-arm 152, wherein each articulation bearing 153 is fixedly connected with a sub-rotating shaft, and each sub-rotating shaft is fixedly connected with a sub-grinding disc 14.

[0027] The central shaft 131 is provided with a central transmission wheel 132, each sub-rotating shaft is provided with a sub-transmission wheel 154, and the central transmission wheel 132 and each sub-transmission wheel 154 are provided with a synchronous unit 155 to realize synchronous transmission. In the technical solution, the ball joint 151 and the articulation bearing 153 of the arm assembly are combined to realize multi-dimensional angle self-adaptive adjustment of the sub-grinding disc 14, and the main grinding disc 13 forms a "center + periphery" composite grinding structure. The sub-arm 152 realizes radial deviation through the ball joint 151, and the articulation bearing 153 allows axial torsion, so that the sub-grinding disc 14 can automatically adapt to the ground undulation (such as construction height difference), the ground fitting property is improved, the problem of local suspension or excessive wear caused by uneven ground of the traditional rigid grinding disc is avoided, and uniform distribution of grinding pressure is ensured; the combination of the large-size main grinding disc 13 and the plurality of small-size sub-grinding discs 14 expands the effective working surface, the single grinding coverage area is increased by 30%-50% compared with the single grinding disc, and the operation efficiency is optimized; after the size of the sub-grinding disc 14 is reduced, the overall equipment weight is reduced, and the operation and transportation are facilitated; the synchronous transmission unit ensures that the rotation speed of the main grinding disc 13 and the sub-grinding disc 14 is synchronous, avoids uneven grinding marks caused by speed difference, and enhances the flexibility of the equipment.

[0028] In the embodiment, a resilient member 16 is fixedly connected between the main arm 15 and the sub-arm 152 to keep the sub-arm 152 in an inclined downward state to fit the ground. The resilient member keeps the sub-arm 152 in an inclined downward state through elastic pre-tightening force, enhances the contact pressure between the sub-grinding disc 14 and the ground, and improves the grinding effect; at the same time, the resilient member can absorb part of the impact load, reduce the fatigue damage of the ball joint 151 and the articulation bearing 153, and prolong the service life of the arm assembly.

[0029] Structurally, the rotating support 11 is provided with a water tank 17 and a spray pipe 171 communicating with the water tank 17. The spray pipe 171 is arranged on both sides of the rotating support 11, and the water tank 17 and the spray pipe 171 are combined to realize water mist spraying during construction, inhibit dust diffusion, improve the construction environment (protect the health of the operating personnel), and at the same time, the water mist can reduce the temperature of the grinding disc, prolong the service life of the abrasive, and meet the environmental protection construction requirements.

[0030] In this embodiment, the synchronous unit 155 is a transmission belt or a transmission chain. When the transmission belt is used, the elastic buffering property can absorb vibration and impact, which is suitable for high-speed and low-load scenes; but it is prone to relaxation after long-term use, and needs to be matched with the compression wheel 111 to maintain tension; while the transmission chain is used, there is no elastic sliding, the transmission precision is high, and it is suitable for heavy load and low speed scenes; but it needs to be lubricated regularly, and the installation precision is relatively high.

[0031] In the grinding machine, if the construction efficiency and cost balance are emphasized, the transmission belt is preferred; if the high-precision transmission and heavy load capacity are emphasized, the transmission chain is preferred.

[0032] Structurally, the lower end of the rotating support 11 is provided with a compression wheel 111 for fastening the synchronous unit 155. The compression wheel 111 is arranged between the two sub-grinding discs 14 to increase the contact point and apply tension to the synchronous transmission unit to prevent slipping or tooth skipping during transmission, especially under high-speed or heavy-load working conditions, to ensure the transmission stability between the main-sub transmission wheels 154 and ensure the consistency of the rotation speed of each grinding disc. When the transmission belt structure is used, a double-sided toothed belt is selected; when the chain transmission structure is used, the compression wheel 111 is matched with the chain wheel structure.

[0033] In this embodiment, the bearing includes a bearing support 2, two moving wheels 21 arranged at the lower end of the bearing support 2, and a push-pull handrail 22 arranged at the upper end of the bearing support 2 for pushing and pulling. Through the combination of the push-pull handrail 22 and the moving wheel 21, lightweight operation of small equipment is realized; during construction, the height of the grinding mechanism 1 is adjusted (such as lifting one side), and the moving wheel 21 is used to realize flexible movement, which is suitable for grinding work in small area ground and narrow area, and reduces the operation threshold.

[0034] In this embodiment, as shown in Figure 3 As shown in the figure, replaceable abrasives (not shown in the figure) are installed at the lower end of the main grinding disc 13 and the sub-grinding disc 14. Specifically, the main grinding disc 13 and the sub-grinding disc 14 are provided with a clamping block group 133, which is fixed by bolts and holds the required abrasive; the lower end of the grinding disc adopts modular abrasive (such as diamond grinding block, silicon carbide grinding sheet), which can be quickly replaced according to the construction demand (such as concrete rough grinding, stone polishing), avoiding the whole scrap caused by local wear of the traditional integrated grinding disc, reducing the use cost, and improving the equipment applicability. Embodiment Two

[0035] Reference Figure 4 Compared with the first embodiment, the bearing is the vehicle body 3, the tail of the vehicle body is equipped with a mounting platform 31, the mounting platform 31 is provided with a lifting assembly 32, and the grinding mechanism 1 is arranged on the lifting assembly 32. The technical scheme is a vehicle-mounted grinding machine structure, the grinding mechanism 1 is integrated on the lifting assembly 32 of the vehicle body 3, and is suitable for large-area ground construction (such as roads and squares); the lifting assembly 32 can adjust the height of the grinding disc, adapt to different construction stages (such as rough grinding and fine grinding), and can realize rapid scene switching through the power of the vehicle body 3, thereby improving the construction efficiency.

[0036] The lifting assembly 32 includes a motor, a lifting screw and other basic structures, is used to lift the grinding mechanism 1 when the vehicle body 3 moves, and is convenient for moving. This is a conventional selection in the art, and will not be described in detail here.

[0037] Although the present application is specifically shown and described in connection with preferred embodiments, those skilled in the art will understand that various changes in form and detail can be made without departing from the spirit and scope of the application as defined by the appended claims.

Claims

1. A road construction surface grinding machine, comprising a grinding mechanism (1) and a support member for mounting the grinding mechanism (1), characterized in that: The grinding mechanism (1) includes a rotating bracket (11), a power motor (12) and its reducer located at the upper end of the rotating bracket (11), and a main grinding disc (13) rotatably mounted at the lower end of the rotating bracket (11). A central shaft (131) is installed at the center of the main grinding disc (13), and the central shaft (131) is connected to the output end of the reducer. The rotating support (11) extends outward with several arm assemblies. Each arm assembly includes a main arm (15), a ball joint hinge (151) installed at the free end of the main arm (15), a sub-arm (152) fixed to the ball joint hinge (151), and a joint bearing (153) located at the end of the sub-arm (152). Each joint bearing (153) has a sub-shaft fixed to it, and each sub-shaft has a sub-grinding disc (14) fixed to it. A central drive wheel (132) is installed on the central shaft (131), and a sub-drive wheel (154) is installed on each of the sub-shafts. A synchronization unit (155) is installed around the central drive wheel (132) and each sub-drive wheel (154) to achieve synchronous transmission.

2. The road construction surface grinder according to claim 1, characterized in that: A retaining elastic element (16) is fixed between the main arm (15) and the sub-arm (152) to keep the sub-arm (152) in a tilted downward state.

3. The road construction surface grinding machine according to claim 1, characterized in that: The lower end of the rotating bracket (11) is provided with at least one pressure wheel (111) for fastening the synchronization unit (155).

4. A road construction surface grinding machine according to claim 1, characterized in that: The support component includes a support bracket (2), two movable wheels (21) located at the lower end of the support bracket (2), and a push-pull handle (22) located on the upper side of the support bracket (2) for pushing and pulling.

5. A road construction surface grinding machine according to claim 1, characterized in that: The supporting component is the vehicle body (3), and a lifting assembly (32) is installed on the supporting component. The grinding mechanism (1) is arranged on the lifting assembly (32).

6. A road construction surface grinder according to any one of claims 1-5, characterized in that: The rotating support (11) is provided with a water tank (17) and a nozzle (171) connected to the water tank (17).

7. A road construction surface grinder according to any one of claims 1-5, characterized in that: Replaceable abrasives are installed at the lower ends of both the main grinding disc (13) and the sub-grinding disc (14).

8. A road construction surface grinder according to any one of claims 1-5, characterized in that: The synchronization unit (155) is a transmission belt or transmission chain.

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