Vibration forming device suitable for cement stabilized macadam base

Abstract

The utility model discloses a vibration forming device suitable for a cement stabilized macadam base layer, which comprises a device box body, a handrail is fixedly arranged at one end of the device box body, a vibration bottom plate is arranged at the bottom of the device box body, and the device box body and the vibration bottom plate are in sliding connection through four groups of telescopic sliding mechanisms. Four groups of vibration connecting mechanisms are fixedly mounted at the end part between the device box body and the vibration bottom plate, a cam mechanism is fixedly mounted at the bottom of the device box body, a protective box body is fixedly mounted at the top of the device box body, and a driving motor for driving the cam mechanism to rotate is fixedly mounted in the protective box body. The counterweight ball is matched with the U-shaped ring to increase a certain gravity effect on the rotation of the cam, and is matched with the rotation of the driving end, so that the abrasion between the two ends of the connecting rod fixedly connected with the cam and the bearing is reduced, and the service life of internal components of the cam mechanism is effectively prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of road construction, and particularly relates to a vibration forming device suitable for a cement stabilized macadam base course. Background Art

[0002] Cement stabilized macadam uses graded macadam as aggregate, adopts a certain amount of cementitious materials and sufficient mortar volume to fill the voids of the aggregate, and is paved and compacted according to the interlocking principle. Its compactness is close to the density, and the strength mainly depends on the interlocking principle between the gravels. At the same time, there is enough mortar volume to fill the voids of the aggregate. It has high initial strength, and the strength increases rapidly with the age and forms a plate body. Therefore, it has high strength, good impermeability and frost resistance. The general cement dosage of cement stabilized macadam is 3% - 6% of the mixture, and the unconfined compressive strength for 7 days can reach 5.0 Mpa, which is higher than that of other subgrade materials. After the cement stabilized macadam is completed, it will not become muddy when encountering rain, and the surface is firm, which is an ideal base course material for high-grade roads.

[0003] The existing small vibration forming devices suitable for road construction are generally small vibration rammers, which use an electric control telescopic structure for vibration. Once the electric control fails, they cannot be used. The use of an independent motor drive combined with a cam structure can effectively solve this problem. However, during the rotation of the cam structure, due to the vibration at the bottom, the wear of the bearings at the connection position of the cam structure is increased, shortening the service life of the bearings inside the vibration device. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a vibration forming device suitable for a cement stabilized macadam base course, which includes a device box body. One end of the device box body is fixedly installed with a handrail. The bottom of the device box body is installed with a vibration bottom plate. The device box body and the vibration bottom plate are slidably connected through four sets of telescopic sliding mechanisms. Four sets of vibration connection mechanisms are fixedly installed at the end between the device box body and the vibration bottom plate. A cam mechanism is fixedly installed at the bottom of the device box body, and a protective box body is fixedly installed at the top of the device box body, and a driving motor for driving the rotation of the cam mechanism is fixedly installed inside the protective box body.

[0005] The driving motor drives the rotation of the cam mechanism, and cooperates with the vibration connection mechanism and the telescopic sliding mechanism to vibrate the vibration bottom plate to perform vibration forming on the ground.

[0006] As a further preferred technical solution of the utility model; a dust-proof plate is fixedly installed at the end of the vibration bottom plate. A ramming surface is arranged at the bottom of the vibration bottom plate. Arc-shaped plates and two sets of extension plates are respectively installed at the top and bottom of both ends of the vibration bottom plate, and auxiliary holes are formed on the extension plates.

[0007] Vibrate through the vibration component inside the vibration forming device to compact the bedding surface that needs to be compacted, ensuring its vibration forming. During the road construction process, for the positions that cannot be reached by large road rollers, this vibration forming device is used for vibration compaction to make it formed.

[0008] As a further preferred technical solution of the present utility model; the telescopic sliding mechanism includes a fixed column fixedly installed at the bottom of the device box body, a connecting column fixedly installed at the bottom of the fixed column, and an auxiliary telescopic member clamped and installed on the auxiliary hole and slidably matched with the connecting column. The connecting column passes through the auxiliary telescopic member and the auxiliary hole, and a limiting plate is arranged at its bottom. The connecting column and the limiting plate are fixedly connected by fixing screws.

[0009] The inner side of the auxiliary telescopic member is a smooth metal surface. When the vibration bottom plate is stressed and vibrates up and down, the connecting column slides inside the auxiliary telescopic member to ensure the vibration effect of the vibration bottom plate.

[0010] As a further preferred technical solution of the present utility model; the vibration connection mechanism includes a mounting block fixedly installed on the top of the vibration bottom plate, a fixed ring fixedly installed on the mounting block, a welding block fixedly installed at the same position at the bottom of the device box body, a fixed rod fixedly installed at the end of the welding block, and a connecting spring connected and installed between the fixed rod and the fixed ring. Hooks are welded and installed at both the top and bottom of the connecting spring, and are connected and fixed to the fixed rod and the fixed ring through the hooks. A pin for limiting the hook is penetrated through the end of the fixed rod.

[0011] After the vibration bottom plate is stressed and moves downward, the connecting spring elastically pulls the vibration bottom plate, so as to ensure that the vibration bottom plate vibrates repeatedly.

[0012] As a further preferred technical solution of the present utility model; the cam mechanism includes a mounting frame fixedly installed at the bottom of the device box body, a connecting rod rotatably installed on the mounting frame, a cam fixedly installed between the connecting rods, two groups of fixed bearings fixedly installed at the same position on the top of the vibration bottom plate, and a rolling rod rotatably installed between the fixed bearings.

[0013] By fixedly installing the cam between the connecting rods, it is ensured that the cam rotates when the connecting rod rotates.

[0014] As a further preferred technical solution of the present utility model; heat dissipation grooves are provided between the top of the mounting frame and the device box body. Both sides of the top of the mounting frame are fixedly installed with the device box body through pads, and multiple groups of heat dissipation holes are provided on the side surfaces of the pads.

[0015] The heat dissipation grooves and heat dissipation holes are arranged to ensure the heat dissipation effect at the top of the cam mechanism during the rotation process.

[0016] As a further preferred technical solution of the utility model, the cam includes a cover plate, an inner ring welded and installed inside, and a U-shaped ring. The outer surface of the cam is provided with a curved surface and a convex surface, and the cam is fixedly installed by connecting bolts penetrating the inner ring, and multiple groups of weighted rolling balls are placed inside the U-shaped ring. The curved surface is arranged in contact with the outer surface of the rolling rod.

[0017] When the cam rotates under force, the curved surface is fitted with the outer surface of the rolling rod. When the convex surface squeezes the rolling rod, the vibration base plate moves downward as a whole, and the connecting column slides inside the auxiliary telescopic part. The connecting spring elastically pulls the vibration base plate, so that the outer surface of the rolling rod is always fitted with the cam surface. The higher the rotation speed, the higher the vibration frequency, thereby achieving the vibration compaction and molding effect of the bottom of the vibration base plate on the cement gravel base.

[0018] As a further preferred technical solution of the utility model, the end of the driving motor and the end of the mounting frame are both butt-jointed with a transmission gear, and the transmission gear is connected and rotated via a transmission chain.

[0019] The two sets of transmission gears are driven to rotate by a driving motor, thereby driving the connecting rod to rotate, causing the cam to rotate, thereby achieving a driving effect on the cam mechanism.

[0020] Beneficial Effects

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. When the cam is rotated under force, the curved surface fits the outer surface of the rolling rod. When the convex surface squeezes the rolling rod, the vibration base plate moves downward as a whole, and the connecting column slides inside the auxiliary telescopic part. The connecting spring elastically pulls the vibration base plate, so that the outer surface of the rolling rod always fits the cam surface. The higher the speed, the higher the vibration frequency, achieving the effect of vibration compaction of the cement gravel base at the bottom of the vibration base plate. The multiple groups of weighted balls placed inside the U-shaped ring match the shape of the U-shaped ring. When the cam rotates, they slide inside the U-shaped ring, adding a certain gravity to the rotation of the cam, and cooperate with the rotation of the drive end, thereby reducing the wear between the two ends of the connecting rod fixedly connected to the cam and the bearings, effectively extending the service life of the internal components of the cam mechanism.

[0023] 2. A heat dissipation groove is provided between the top of the mounting frame and the device box, and multiple groups of heat dissipation holes are provided on the side of the pad. The heat dissipation groove and the heat dissipation holes are provided to ensure the heat dissipation effect of the top of the cam mechanism during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the structural schematic diagram of the present utility model;

[0025] Figure 2 This is the internal structural schematic diagram of the present utility model;

[0026] Figure 3 is Figure 2 the enlarged structural schematic diagram at position A in

[0027] Figure 4 is Figure 2 the sectional structural schematic diagram of

[0028] Figure 5 This is the structural schematic diagram of the vibration bottom plate of the present utility model;

[0029] Figure 6 This is the structural schematic diagram of the telescopic sliding mechanism of the present utility model;

[0030] Figure 7 This is the internal structural schematic diagram of the cam of the present utility model.

[0031] In the figure: 1. Device box body; 11. Protection box body; 12. Handrail; 2. Vibration bottom plate; 21. Dust-proof plate; 22. Arc plate; 23. Extension plate; 24. Compaction surface; 25. Auxiliary hole; 3. Vibration connection mechanism; 31. Installation block; 32. Fixed ring; 33. Welding block; 34. Fixed rod; 35. Plug pin; 36. Connection spring; 37. Hook; 4. Cam mechanism; 41. Installation frame; 42. Base plate; 43. Heat dissipation groove; 44. Cam; 441. Cover plate; 442. Inner layer ring; 443. Connection bolt; 444. U-shaped ring; 445. Counterweight ball; 446. Convex surface; 447. Curved surface; 45. Connecting rod; 46. Heat dissipation hole; 47. Fixed bearing; 48. Rolling rod; 5. Telescopic sliding mechanism; 51. Fixed column; 52. Connection column; 53. Auxiliary telescopic member; 54. Fixed screw; 55. Limiting plate; 6. Driving motor; 61. Transmission gear; 62. Transmission chain. Specific embodiments

[0032] This specific embodiment is a vibration forming device applicable to the cement stabilized macadam base course.

[0033] The existing small vibration forming devices applicable to road construction are generally small vibrating rammers, which use an electric control telescopic structure for vibration. Once the electric control fails, they cannot be used. However, using an independent motor drive combined with a cam structure can effectively solve this problem. During the rotation of the cam structure, due to the vibration at the bottom, the wear of the bearings at the connection position of the cam structure increases, shortening the service life of the bearings inside the vibration device.

[0034] Its structural schematic diagram is as shown in Figure 1 - Figure 2As shown in the figure. A vibration forming device applicable to the cement stabilized macadam base layer includes a device box body 1. One end of the device box body 1 is fixedly installed with a handrail 12, and the bottom of the device box body 1 is installed with a vibration bottom plate 2. A dust-proof plate 21 is fixedly installed at the end of the vibration bottom plate 2. A ramming surface 24 is arranged at the bottom of the vibration bottom plate 2. Arc-shaped plates 22 and two groups of extension plates 23 are respectively installed at the top and bottom of both ends of the vibration bottom plate 2. Auxiliary holes 25 are opened on the extension plates 23. Through the vibration of the internal vibration assembly of the vibration forming device, the ramming surface 24 rams the subgrade of the cement that needs to be rammed at any time to ensure its vibration forming. During the road construction process, for the positions that cannot be rolled by large rollers, the vibration forming device is used for vibration rolling to make it formed.

[0035] The structural schematic diagram thereof is as Figure 3 - Figure 6 shown. The device box body 1 and the vibration bottom plate 2 are slidably connected through four sets of telescopic sliding mechanisms 5. The telescopic sliding mechanism 5 includes a fixed column 51 fixedly installed at the bottom of the device box body 1, a connecting column 52 fixedly installed at the bottom of the fixed column 51, and an auxiliary telescopic member 53 clamped on the auxiliary hole 25 and slidably matched with the connecting column 52. The connecting column 52 penetrates through the auxiliary telescopic member 53 and the auxiliary hole 25, and a limiting plate 55 is arranged at its bottom. The connecting column 52 and the limiting plate 55 are fixedly connected through a fixing screw 54. The inner side of the auxiliary telescopic member 53 is a smooth metal surface. When the vibration bottom plate 2 is stressed and vibrates up and down, the connecting column 52 slides inside the auxiliary telescopic member 53 to ensure the vibration effect of the vibration bottom plate 2.

[0036] Four sets of vibration connection mechanisms 3 are fixedly installed between the device box body 1 and the vibration bottom plate 2 at the end. The vibration connection mechanism 3 includes a mounting block 31 fixedly installed on the top of the vibration bottom plate 2, a fixing ring 32 fixedly installed on the mounting block 31, a welding block 33 fixedly installed at the same position at the bottom of the device box body 1, a fixing rod 34 fixedly installed at the end of the welding block 33, and a connecting spring 36 connected and installed between the fixing rod 34 and the fixing ring 32. Hooks 37 are welded and installed at both the top and bottom of the connecting spring 36, and are connected and fixed to the fixing rod 34 and the fixing ring 32 through the hooks 37. A pin 35 for limiting the hook 37 is penetrated through the end of the fixing rod 34. After the vibration bottom plate 2 is stressed and moves downward, the connecting spring 36 elastically pulls the vibration bottom plate 2 to ensure that the vibration bottom plate 2 vibrates repeatedly.

[0037] A cam mechanism 4 is fixedly installed at the bottom of the device box body 1. The cam mechanism 4 includes a mounting frame 41 fixedly installed at the bottom of the device box body 1, a connecting rod 45 rotatably installed on the mounting frame 41, a cam 44 fixedly installed between the connecting rods 45, two groups of fixed bearings 47 fixedly installed at the same position on the top of the vibration bottom plate 2, and a rolling rod 48 rotatably installed between the fixed bearings 47. Since the cam 44 is fixedly installed between the connecting rods 45, it is ensured that the cam 44 also rotates when the connecting rod 45 rotates. A heat dissipation groove 43 is provided between the top of the mounting frame 41 and the device box body 1, and both sides of the top of the mounting frame 41 are fixedly installed with the device box body 1 through cushion plates 42, and multiple groups of heat dissipation holes 46 are provided on the side surfaces of the cushion plates 42. Through the arrangement of the heat dissipation groove 43 and the heat dissipation holes 46, the heat dissipation effect at the top of the cam mechanism 4 during rotation is ensured.

[0038] The structural schematic diagram is as Figure 7 shown. The cam 44 includes a cover plate 441, an inner layer ring 442 welded and installed inside, and a U-shaped ring 444. The outer surface of the cam 44 is provided with a curved surface 447 and a convex surface 446. The cam 44 is fixedly installed through a connecting bolt 443 penetrating the inner layer ring 442, and multiple groups of counterweight balls 445 are placed inside the U-shaped ring 444. The curved surface 447 is arranged in fit with the outer surface of the rolling rod 48. When the cam 44 rotates under force, the curved surface 447 is arranged in fit with the outer surface of the rolling rod 48. When the convex surface 446 presses the rolling rod 48, the entire vibration bottom plate 2 moves downward, and the connecting column 52 slides inside the auxiliary telescopic member 53, and the connecting spring 36 elastically pulls the vibration bottom plate 2, so that the outer surface of the rolling rod 48 is always arranged in fit with the surface of the cam 44. The higher the rotation speed, the higher the vibration frequency, achieving the vibration compaction forming effect of the bottom of the vibration bottom plate 2 on the cement macadam base. The multiple groups of counterweight balls 445 placed inside the U-shaped ring 444 cooperate with the shape of the U-shaped ring 444. When the cam 44 rotates, they slide inside the U-shaped ring 444, adding a certain gravitational effect to the rotation of the cam 44, reducing the wear between the two ends of the connecting rod 45 fixedly connected to the cam 44 and the bearings, and effectively extending the service life of the internal components of the cam mechanism 4. A protective box body 11 is fixedly installed on the top of the device box body 1, and a driving motor 6 for driving the cam mechanism 4 to rotate is fixedly installed inside the protective box body 11. A transmission gear 61 is butt-jointed and installed at the end of the driving motor 6 and the end of the mounting frame 41, and the transmission gears 61 are connected and rotated through a transmission chain 62. By driving the two transmission gears 61 to rotate through the driving motor 6, the connecting rod 45 is driven to rotate, so that the cam 44 rotates, achieving the driving effect on the cam mechanism 4.

[0039] The construction process of cement stabilized gravel base: First, the mix ratio is determined based on the actual incoming materials and the water content is strictly controlled for centralized mixing. The clinker is transported on site after being inspected and qualified. After being transported to the site, the quality of the base is re-inspected. Only after it meets the quality requirements of the sub-project can the cement stabilized layer be paved. During the paving process, the transport vehicle cooperates with the paver to pave the base, and the thickness and elevation of the base are strictly controlled. In order to ensure the compaction of the edge, it is supported in combination with the fixed steel formwork. Workers are set up behind the paver to eliminate the phenomenon of segregation of the mixture. After the paver, vibrating rollers, tire rollers and double steel rollers are followed closely for rolling, strictly in accordance with the standards. For the positions that cannot be rolled down, workers use small vibration forming devices for vibration rolling to ensure that the base is rolled and formed in one piece. After the rolling is completed, the road surface is sampled for a second test to see if the base meets the standard requirements, and it is immediately covered with a wet soil cloth, and a sprinkler truck is used to sprinkle water 2 hours after covering to achieve a maintenance effect. When processing the unrolled position, the two sets of transmission gears 61 are driven to rotate by the driving motor 6, thereby driving the connecting rod 45 to rotate, so that the cam 44 is rotated, and the driving effect of the cam mechanism 4 is achieved. When the cam 44 is rotated under force, the curved surface 447 is arranged to fit the outer surface of the rolling rod 48, and when the convex surface 446 squeezes the rolling rod 48, the vibration base plate 2 moves downward as a whole, and the connecting column 52 slides inside the auxiliary telescopic member 53, and the connecting spring 36 elastically pulls the vibration base plate 2, so that the outer surface of the rolling rod 48 is always arranged to fit the surface of the cam 44. The higher the rotation speed, the higher the vibration frequency, so as to achieve the vibration compaction and molding effect of the bottom of the vibration base plate 2 on the cement gravel base.

[0040] All technical features in this embodiment can be freely combined according to actual needs.

[0041] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A vibration forming device suitable for cement stabilized gravel base, characterized in that: The invention comprises a device box (1), a handrail (12) is fixedly mounted on one end of the device box (1), a vibration base plate (2) is mounted on the bottom of the device box (1), the device box (1) and the vibration base plate (2) are slidably connected via four sets of telescopic sliding mechanisms (5), four sets of vibration connection mechanisms (3) are fixedly mounted at the ends between the device box (1) and the vibration base plate (2), a cam mechanism (4) is fixedly mounted on the bottom of the device box (1), a protection box (11) is fixedly mounted on the top of the device box (1), and a drive motor (6) for driving the cam mechanism (4) to rotate is fixedly mounted inside the protection box (11).

2. A vibration forming device suitable for cement stabilized gravel base according to claim 1, characterized in that: A dustproof plate (21) is fixedly mounted on the end of the vibration base plate (2), a tamping surface (24) is provided at the bottom of the vibration base plate (2), and an arc-shaped plate (22) and two groups of extension plates (23) are respectively mounted on the top and bottom of both ends of the vibration base plate (2), and auxiliary holes (25) are provided on the extension plates (23).

3. A vibration forming device suitable for cement stabilized gravel base according to claim 2, characterized in that: The telescopic sliding mechanism (5) comprises a fixing column (51) fixedly mounted on the bottom of the device housing (1), a connecting column (52) fixedly mounted on the bottom of the fixing column (51), and an auxiliary telescopic member (53) snap-fitted on the auxiliary hole (25) and slidably matched with the connecting column (52); the connecting column (52) passes through the auxiliary telescopic member (53) and the auxiliary hole (25), and a limiting plate (55) is arranged at the bottom of the connecting column; the connecting column (52) and the limiting plate (55) are fixedly connected by fixing screws (54).

4. A vibration forming device suitable for cement stabilized gravel base according to claim 3, characterized in that: The vibration connection mechanism (3) comprises a mounting block (31) fixedly mounted on the top of the vibration base plate (2), a fixing ring (32) fixedly mounted on the mounting block (31), a welding block (33) fixedly mounted at the same position on the bottom of the device housing (1), a fixing rod (34) fixedly mounted at the end of the welding block (33), and a connecting spring (36) connected between the fixing rod (34) and the fixing ring (32), wherein hooks (37) are welded on the top and bottom of the connecting spring (36) and are connected and fixed to the fixing rod (34) and the fixing ring (32) via the hooks (37), and a latch (35) for limiting the hook (37) is installed through the end of the fixing rod (34).

5. A vibration forming device suitable for cement stabilized gravel base according to claim 4, characterized in that: The cam mechanism (4) comprises a mounting frame (41) fixedly mounted on the bottom of the device housing (1), a connecting rod (45) rotatably mounted on the mounting frame (41), a cam (44) fixedly mounted between the connecting rods (45), two sets of fixed bearings (47) fixedly mounted at the same position on the top of the vibration base plate (2), and a rolling rod (48) rotatably mounted between the fixed bearings (47).

6. A vibration forming device suitable for cement stabilized gravel base according to claim 5, characterized in that: A heat dissipation slot (43) is provided between the top of the mounting frame (41) and the device box (1), and both sides of the top of the mounting frame (41) are fixedly mounted to the device box (1) via pads (42), and a plurality of heat dissipation holes (46) are provided on the side of the pads (42).

7. A vibration forming device suitable for cement stabilized gravel base according to claim 6, characterized in that: The cam (44) comprises a cover plate (441), an inner ring (442) welded inside, and a U-shaped ring (444); the outer surface of the cam (44) is provided with a curved surface (447) and a convex surface (446); the cam (44) is fixedly installed by connecting bolts (443) penetrating the inner ring (442); a plurality of groups of weighted rolling balls (445) are placed inside the U-shaped ring (444); and the curved surface (447) is arranged to fit the outer surface of the rolling rod (48).

8. A vibration forming device suitable for cement stabilized gravel base according to claim 7, characterized in that: The end of the driving motor (6) and the end of the mounting frame (41) are both butted against each other and are provided with a transmission gear (61), and the transmission gear (61) is connected and rotated via a transmission chain (62).

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