Driving device for road roller

Abstract

The driving device comprises a main transmission shaft installed in an inner cavity of a pressing wheel of the road roller, the two sides of the surface of the main transmission shaft are rotationally connected with the pressing wheel of the road roller through bearings, supporting frames are arranged on the two sides of the surface of the main transmission shaft in a sleeved mode, a double-vibration assembly is arranged between the two supporting frames, and the double-vibration assembly is arranged between the two supporting frames. The double-vibration assembly comprises transmission columns located on the front side and the rear side of the main transmission shaft, eccentric pendulum bobs are fixedly installed on the two sides of the surface of each transmission column, driving fluted discs are fixedly connected to the two sides of the surface of the main transmission shaft, and stress fluted discs are fixedly connected to the surfaces of the transmission columns. Through cooperative use of the main transmission shaft, the oil pressure motor and the double-vibration assembly, double-amplitude vibration is generated in the inner cavity of the pressing wheel of the road roller, then the pressing wheel of the road roller is subjected to double-vibration pressing on the ground, meanwhile, under cooperative use of the supporting frame and the tensioning assembly, stable transmission is ensured, and the service life of the pressing wheel of the road roller is prolonged. Therefore, the purposes of double-amplitude jolt-squeeze and stable transmission can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of road construction machinery technology, and in particular relates to a drive device for a road roller. Background Technology

[0002] The internal drive unit of a road roller drum is a power transmission and vibration generation system integrated inside the road roller drum (compactor). By organically combining the drive components, transmission mechanism and vibration device, it realizes the rotation drive and high-frequency vibration function of the drum. It uses a hydraulic motor to drive the main drive shaft, and drives the eccentric pendulum to generate double-amplitude vibration through toothed belt transmission. At the same time, it is equipped with an automatic tensioning mechanism and a shock-absorbing support structure, which significantly improves compaction efficiency and road surface smoothness while ensuring transmission stability.

[0003] In road construction, the main function of a road roller is to compact materials such as soil and asphalt. However, the dual-vibration transmission structure requires belt drive. Due to the large vibration generated during operation, the belt is prone to slippage and wear. Under long-term vibration conditions, the belt is also prone to loosening. At the same time, the torsion spring or tension spring tensioning structure has rapid elastic fatigue decay and is prone to repeated loosening and tightening. Therefore, it is necessary to provide a drive device for road rollers that improves transmission stability and reliability of vibration process through the coordinated design of dual-vibration components, automatic tensioning mechanism and optimized support structure. Utility Model Content

[0004] The purpose of this invention is to provide a drive device for a road roller, which improves transmission stability and vibration process reliability through the coordinated design of a dual-vibration assembly, an automatic tensioning mechanism, and an optimized support structure, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A drive device for a road roller includes a main drive shaft installed in the inner cavity of the road roller drum. Both sides of the surface of the main drive shaft are rotatably connected to the road roller drum through bearings. Support frames are sleeved on both sides of the surface of the main drive shaft. A double vibration assembly is arranged between the two support frames. The double vibration assembly includes a transmission column located on the front and rear sides of the main drive shaft. An eccentric pendulum is fixedly installed on both sides of the surface of the transmission column. A drive gear is fixedly connected to both sides of the surface of the main drive shaft. A force-bearing gear is fixedly connected to the surface of the transmission column. The two force-bearing gears are arranged in a mirror image. A toothed belt is sleeved on the surface of the drive gear and the force-bearing gear. The drive gear and the force-bearing gear are connected by a toothed belt drive. A protective shell is fixedly connected to the surface of the support frame. A tensioning assembly is arranged in the inner cavity of the protective shell.

[0006] Preferably, a hydraulic motor is installed on the left side of the roller roller and mounted on the side of the roller frame, and the left end of the main drive shaft is fixedly connected to the output shaft of the hydraulic motor.

[0007] Preferably, both sides of the surface of the main drive shaft are rotatably connected to the support frame via bearings, and both ends of the drive column are rotatably connected to the support frame via bearings.

[0008] Preferably, the tensioning assembly includes a triangular extrusion plate rotatably connected to the inner cavity of the protective shell, and a tensioning wheel rotatably connected to the bottom of one side of the triangular extrusion plate, the tensioning wheel rollingly contacting the surface of the toothed belt.

[0009] Preferably, a damping rod is fixedly installed on the surface of the protective shell, and an arc-shaped groove is provided on the top of one side of the triangular extrusion plate, with the extended end of the protective shell slidably connected to the inner cavity of the arc-shaped groove.

[0010] Preferably, the front and rear ends of the two opposing sides of the support frame are fixedly connected with arc-shaped guide blocks by bolts, and the inner sides of the roller drum of the road roller are provided with circular grooves, and the arc-shaped guide blocks are slidably connected to the inner cavity of the circular grooves.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model uses the main drive shaft, hydraulic motor and double vibration assembly to generate double vibration in the inner cavity of the roller drum, thereby enabling the roller drum to perform double vibration pressing on the ground. At the same time, with the cooperation of the support frame and tensioning assembly, transmission stability is ensured, thus achieving the purpose of double vibration pressing and transmission stability.

[0013] 2. This utility model uses the bearing connection between the main drive shaft, support frame and drive column to prevent the support frame from rotating rapidly during the rotation of the main drive shaft and drive column, while also providing support for the drive column and improving the stability of the drive column during movement.

[0014] 3. The present invention, through the setting of the tensioning component, wherein the damping rod and the triangular extrusion plate work together to exert a squeezing effect on the tensioning wheel, so that the tensioning wheel presses against the toothed belt, thereby improving the meshing transmission stability of the toothed belt, the drive toothed disc, and the force-bearing toothed disc. Attached Figure Description

[0015] in:

[0016] Figure 1 This is a top view schematic diagram of one embodiment of the present utility model;

[0017] Figure 2 This is a three-dimensional exploded view of the roller drum, main drive shaft, and double vibration assembly of a road roller according to an embodiment of the present invention;

[0018] Figure 3 This is a perspective view of a support frame, a dual-vibration assembly, a protective shell, and a tensioning assembly according to an embodiment of the present invention.

[0019] Figure 4 This is a three-dimensional exploded view of the main drive shaft, the double vibration assembly, and the tensioning assembly according to one embodiment of the present invention.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Roller roller, 2. Main drive shaft, 3. Hydraulic motor, 4. Support frame, 5. Double vibration assembly, 51. Drive column, 52. Eccentric pendulum, 53. Drive gear plate, 54. Force-bearing gear plate, 55. Toothed belt, 6. Protective shell, 7. Tensioning assembly, 71. Triangular extrusion plate, 72. Tensioning wheel, 73. Damping rod, 74. Arc-shaped slide, 8. Arc-shaped guide block, 9. Circular groove. Detailed Implementation

[0022] In the following description, embodiments of the drive device for a road roller according to the present invention will be described with reference to the accompanying drawings.

[0023] Figure 1-4This invention illustrates a drive device for a road roller according to an embodiment of the present invention. It includes a main drive shaft 2 installed inside the roller 1. Both sides of the main drive shaft 2 are rotatably connected to the roller 1 via bearings. A hydraulic motor 3 is installed on the left side of the roller 1, mounted on one side of the roller frame. The left end of the main drive shaft 2 is fixedly connected to the output shaft of the hydraulic motor 3. Both sides of the main drive shaft 2 are rotatably connected to a support frame 4 via bearings. Both ends of a transmission column 51 are rotatably connected to the support frame 4 via bearings. The main drive shaft 2, the support frame 4, and the transmission column 51 are connected by bearings. This design prevents the main drive shaft 2 and drive column 51 from rotating rapidly, thus avoiding rapid rotation of the support frame 4. It also provides support for the drive column 51, improving its stability during movement. Support frames 4 are fitted on both sides of the main drive shaft 2. Arc-shaped guide blocks 8 are bolted to the front and rear ends of the opposing sides of the two support frames 4. Circular grooves 9 are formed on both sides of the inner cavity of the roller drum 1. The arc-shaped guide blocks 8 are slidably connected to the inner cavity of the circular grooves 9. A double-vibration assembly 5 is installed between the two support frames 4. The double-vibration assembly 5 includes components located on the front and rear sides of the main drive shaft 2. The transmission column 51 has eccentric pendulums 52 fixedly mounted on both sides of its surface. Drive gear discs 53 are fixedly connected to both sides of the main transmission shaft 2. Force-receiving gear discs 54 are fixedly connected to the surface of the transmission column 51. The two force-receiving gear discs 54 are mirror images of each other. A toothed belt 55 is fitted onto the surfaces of the drive gear disc 53 and the force-receiving gear disc 54. The drive gear disc 53 and the force-receiving gear disc 54 are connected via the toothed belt 55. A protective shell 6 is fixedly connected to the surface of the support frame 4. A tensioning assembly 7 is provided inside the protective shell 6. The tensioning assembly 7 includes a triangular compression plate 71 rotatably connected to the inner cavity of the protective shell 6. A tensioning wheel 72 is rotatably connected to the bottom of one side of the extrusion plate 71. The tensioning wheel 72 rolls in contact with the surface of the toothed belt 55. A damping rod 73 is fixedly installed on the surface of the protective shell 6. An arc-shaped groove 74 is opened on the top of one side of the triangular extrusion plate 71. The protruding end of the protective shell 6 is slidably connected to the inner cavity of the arc-shaped groove 74. Through the setting of the tensioning assembly 7, the damping rod 73 and the triangular extrusion plate 71 work together to squeeze the tensioning wheel 72, so that the tensioning wheel 72 presses against the toothed belt 55, thereby improving the meshing transmission stability of the toothed belt 55, the drive toothed disc 53, and the force-bearing toothed disc 54.

[0024] Working principle: In use, the user drives the main drive shaft 2 to rotate via the hydraulic motor 3, causing the main drive shaft 2 to rotate within the inner cavity of the roller 1. During the rotation of the main drive shaft 2, the drive gear 53 and the gear belt 55 work together to drive the force-bearing gear 54 to rotate. This causes the transmission column 51 to drive the eccentric pendulum 52 to rotate eccentrically within the inner cavity of the roller 1, resulting in high-frequency vibration inside the roller 1 and transmitting the vibration force to the roller. During use, the damping rod 73 generates a damping thrust on the triangular pressing plate 71, causing the triangular pressing plate 71 to rotate around its connection point with the protective shell 6, and pushes the tensioning wheel 72. This causes the tensioning wheel 72 to press against the surface of the toothed belt 55, and simultaneously to be in rolling contact with the surface of the toothed belt 55, thus tightening the toothed belt 55. This ensures that the teeth on the surfaces of the drive toothed disc 53 and the force-bearing toothed disc 54 can tightly mesh with the internal teeth of the toothed belt 55, preventing tooth wear and tear.

[0025] In summary, the drive device for the road roller, through the combined use of the main drive shaft 2, the hydraulic motor 3, and the double vibration assembly 5, generates double-amplitude vibrations in the inner cavity of the road roller drum 1, thereby enabling the road roller drum 1 to perform double-vibration pressing on the ground. At the same time, with the combined use of the support frame 4 and the tensioning assembly 7, transmission stability is ensured, thus achieving the purpose of double-amplitude vibration pressing and transmission stability.

Claims

1. A drive device for a road roller, characterized in that, The system includes a main drive shaft (2) installed inside the roller (1) of a road roller: both sides of the surface of the main drive shaft (2) are rotatably connected to the roller (1) of the road roller via bearings; both sides of the surface of the main drive shaft (2) are fitted with support frames (4); a double vibration assembly (5) is provided between the two support frames (4); the double vibration assembly (5) includes drive columns (51) located on the front and rear sides of the main drive shaft (2); eccentric pendulums (52) are fixedly installed on both sides of the surface of the drive columns (51); the main drive shaft ( 2) Both sides of the surface are fixedly connected to a drive gear plate (53), and the surface of the transmission column (51) is fixedly connected to a force-receiving gear plate (54). The two force-receiving gear plates (54) are arranged in a mirror image. The surfaces of the drive gear plate (53) and the force-receiving gear plate (54) are fitted with a toothed belt (55). The drive gear plate (53) and the force-receiving gear plate (54) are connected by a toothed belt (55). The surface of the support frame (4) is fixedly connected to a protective shell (6), and the inner cavity of the protective shell (6) is provided with a tensioning component (7).

2. The drive device for a road roller according to claim 1, characterized in that, A hydraulic motor (3) is installed on the left side of the roller (1) of the road roller and is mounted on the side of the roller frame. The left end of the main drive shaft (2) is fixedly connected to the output shaft of the hydraulic motor (3).

3. A drive device for a road roller according to claim 2, characterized in that, Both sides of the surface of the main drive shaft (2) are rotatably connected to the support frame (4) through bearings, and both ends of the drive column (51) are rotatably connected to the support frame (4) through bearings.

4. A drive device for a road roller according to claim 3, characterized in that, The tensioning assembly (7) includes a triangular extrusion plate (71) rotatably connected to the inner cavity of the protective shell (6), and a tensioning wheel (72) is rotatably connected to the bottom of one side of the triangular extrusion plate (71), and the tensioning wheel (72) rolls in contact with the surface of the toothed belt (55).

5. A drive device for a road roller according to claim 4, characterized in that, A damping rod (73) is fixedly installed on the surface of the protective shell (6), and an arc-shaped groove (74) is opened on the top of one side of the triangular extrusion plate (71). The protruding end of the protective shell (6) is slidably connected to the inner cavity of the arc-shaped groove (74).

6. A drive device for a road roller according to claim 5, characterized in that, The front and rear ends of the two support frames (4) on opposite sides are fixedly connected with arc-shaped guide blocks (8) by bolts. The inner sides of the roller roller (1) are provided with circular grooves (9), and the arc-shaped guide blocks (8) are slidably connected to the inner cavity of the circular grooves (9).

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