Roller drive system and roller

Abstract

The present invention provides a roller transmission system and a roller. Among them, the roller transmission system includes: a drive axle; a connecting mechanism connected to the input shaft of the drive axle; an integrated speed reducer, the output shaft of the integrated speed reducer is connected to the connecting mechanism, and the input end of the integrated speed reducer is used to connect the driving device of the roller; wherein, the integrated speed reducer is used to transmit the output power of the driving device to the drive axle, and decelerate and / or brake during the power transmission process. The technical solution of the present invention adopts an integrated speed reducer for transmission, deceleration and / or braking operations, simplifies the overall structure and connection relationship of the transmission system, and at the same time simplifies the internal structure of the drive axle. A drive axle with high versatility in the mechanical industry can be used, which is beneficial to improving the reliability of the drive axle and reducing costs at the same time.

Description

Technical Field

[0001] The present application relates to the technical field of road roller drive systems, and more specifically, to a road roller drive system and a road roller. Background Art

[0002] Road rollers are one of the commonly used road construction machines. In recent years, the use of fully hydraulic drive systems in road rollers has been relatively common, and fully hydraulic road rollers have developed rapidly. Currently, most fully hydraulic road rollers use a method of connecting a hydraulic motor to a drive axle for transmission. The overall structure of the drive system and the internal structure of the drive axle are relatively complex. A planetary reducer and a parking brake are provided in the drive axle, resulting in a high failure rate, and the structure of the drive axle needs to be specially designed, leading to high production and manufacturing costs. Summary of the Invention

[0003] According to an embodiment of the present invention, it aims to at least improve one of the technical problems existing in the prior art or related technologies.

[0004] To this end, an object of an embodiment of the present invention is to provide a road roller drive system.

[0005] Another object of an embodiment of the present invention is to provide a road roller.

[0006] To achieve the above object, according to an embodiment of the first aspect of the present invention, a road roller drive system is provided, including: a drive axle; a connection mechanism connected to the input shaft of the drive axle; an integrated speed reducer, the output shaft of the integrated speed reducer is connected to the connection mechanism, and the input end of the integrated speed reducer is used to connect to the hydraulic drive device of the road roller; wherein, the integrated speed reducer is used to transmit the output power of the hydraulic drive device to the drive axle, and decelerate and / or brake during the power transmission process.

[0007] According to an embodiment of the first aspect of the present invention, the road roller drive system includes a drive axle, a connection mechanism, and an integrated speed reducer. By providing a connection mechanism connected to the input shaft of the drive axle and the output shaft of the integrated speed reducer respectively, the integrated speed reducer is in transmission connection with the drive axle. The input end of the integrated speed reducer is connected to the hydraulic drive device of the road roller to obtain the output power of the hydraulic drive device, and transmit the power to the drive axle through the connection mechanism, and then transmit the power to the drive wheels of the road roller through the drive axle, so that the drive wheels rotate to drive the road roller to travel. Among them, the integrated speed reducer can also play a role in decelerating and / or braking during the power transmission process, so that the output speed meets the requirements of the drive axle, and further enables the road roller to travel at the speed required for construction, and at the same time, brake through the integrated speed reducer when needed.

[0008] In the roller transmission system of this solution, by using an integrated speed reducer for transmission, speed reduction, and / or braking, the overall structure and connection relationship of the transmission system are simplified. At the same time, it provides conditions for simplifying the internal structure of the drive axle, and a drive axle with a relatively high universality in the mechanical industry can be used, which is beneficial to reducing costs and improving the reliability of the drive axle.

[0009] In addition, the roller transmission system in the above technical solution provided in the embodiment of the present invention may also have the following additional technical features:

[0010] In the above technical solution, the connection mechanism includes: a mounting bracket, the mounting bracket is connected to the drive axle, and a first through hole corresponding to the input shaft of the drive axle is provided on the mounting bracket; a transmission flange, one end of the transmission flange is connected to the output shaft of the integrated speed reducer; wherein, the input shaft of the drive axle passes through the first through hole and is connected to the other end of the transmission flange.

[0011] In this technical solution, the connection mechanism includes a mounting bracket and a transmission flange. The mounting bracket is connected to the drive axle to provide support and protection for the transmission connection between the integrated speed reducer and the drive axle. Among them, a first through hole corresponding to the input shaft of the drive axle is provided on the mounting bracket, and the input shaft of the drive axle passes through the first through hole and extends into the mounting bracket. One end of the transmission flange is connected to the output shaft of the integrated speed reducer, and the other end is connected to the part of the input shaft of the drive axle passing through the first through hole, thereby realizing the transmission connection to transmit power between the integrated speed reducer and the drive axle. Among them, the input end of the drive axle does not need to be directly connected to the output shaft of the integrated speed reducer. When assembling with drive axles of different models or structures, only the transmission flange needs to be processed, and there is no need to process the drive axle or the integrated speed reducer, which is beneficial to reducing the processing difficulty and processing cost and improving the universality of the transmission system.

[0012] In the above technical solution, a groove is provided at one end of the transmission flange facing the integrated speed reducer, and the output shaft of the integrated speed reducer extends into the groove and is detachably connected to the transmission flange.

[0013] In this technical solution, by providing a groove at one end of the transmission flange facing the integrated speed reducer, the output shaft of the integrated speed reducer extends into the groove to be connected to the transmission flange. The shape of the groove is adapted to the shape of the output shaft of the integrated speed reducer, which is convenient for connection, and the output shaft of the integrated speed reducer and the transmission flange are detachably connected, which is convenient for disassembly and assembly.

[0014] In the above technical solution, a first stepped portion is provided on the output shaft of the integrated speed reducer. The first stepped portion protrudes radially and forms a bolt connection with the end face of the transmission flange.

[0015] In this technical solution, a first stepped portion protruding radially is provided on the output shaft of the integral speed reducer. When assembling with the transmission flange, the first stepped portion is fixedly connected to the end face of the transmission flange through bolts to improve the connection strength and reliability. Among them, multiple bolts can be arranged at intervals in the circumferential direction to jointly fix the first stepped portion and the transmission flange. It can be understood that during the power transmission process, the transmission flange bears a large torque. If the connection strength is low, it is easy to cause damage and affect the normal transmission.

[0016] In the above technical solution, the transmission flange is provided with a second through hole corresponding to the first through hole, and an internal spline is provided in the second through hole; the input shaft of the drive axle is provided with an external spline, and the external spline cooperates with the internal spline to realize the transmission connection between the integral speed reducer and the drive axle.

[0017] In this technical solution, a second through hole is correspondingly provided on the transmission flange corresponding to the first through hole. By providing an internal spline in the second through hole, the transmission flange forms a spline sleeve. At the same time, an external spline is provided on the input shaft of the drive axle, so that the input shaft of the drive axle extends into the second through hole, and the transmission connection between the drive axle and the integral speed reducer is realized through the cooperation between the internal spline and the external spline, which is convenient for transmission. Among them, the spline has a high cooperation strength, can bear a large torque, and is simple to disassemble and assemble, which is convenient for assembly.

[0018] In the above technical solution, the mounting bracket includes: a mounting base, the mounting base is a hollow structure, and an opening is provided at one end of the mounting base facing the integral speed reducer; a mounting end plate, which is arranged at the opening and is detachably connected to the mounting base, and a third through hole is provided on the mounting end plate; wherein, the transmission flange is arranged in the mounting base, and the output shaft of the integral speed reducer extends into the mounting base through the third through hole and is connected to the transmission flange.

[0019] In this technical solution, the mounting bracket includes a mounting base and a mounting end plate. The mounting base is a hollow structure with an opening at one end, and the opening is arranged at the end facing the integral speed reducer to facilitate the output shaft of the integral speed reducer to extend into the mounting base. The transmission flange is located in the mounting base and is connected to the output shaft of the integral speed reducer; a mounting end plate is provided at the opening of the mounting base, and the mounting end plate is sleeved on the output shaft of the integral speed reducer and is detachably connected to the mounting base to block the opening of the mounting base, thereby playing a protective role for the transmission flange. Among them, a third through hole is provided on the mounting end plate, and the output shaft of the integral speed reducer passes through the third through hole and extends into the mounting base to provide support for the output shaft of the integral speed reducer through the mounting end plate, and at the same time play a role of radial positioning, which can prevent the output shaft of the integral speed reducer from generating radial displacement.

[0020] In the above technical solution, the part of the output shaft of the integrated reducer located in the mounting base is provided with a second step portion, the second step portion protrudes radially, and the end surface of the second step portion abuts against the mounting end plate.

[0021] In this technical solution, a second step portion is provided on the part of the output shaft of the integrated reducer located within the mounting base, and the second step portion protrudes radially so that the end face of the second step portion abuts against one end of the mounting end plate toward the transmission flange, so that the output shaft of the integrated reducer is axially limited by the second step portion to prevent axial movement.

[0022] In the above technical solution, the mounting base and the transmission flange are both cylindrical structures.

[0023] In this technical solution, by setting the mounting base and the transmission flange to be both cylindrical structures, on the one hand, they can be adapted to the output shaft of the integrated reducer to facilitate positioning and assembly; on the other hand, the cylindrical structure has higher stability during rotation, which helps to reduce shaking.

[0024] In the above technical solution, the drive axle includes: a bridge housing, which is arranged along the width direction of the roller; a bevel gear mechanism, which is arranged in the bridge housing, the axial direction of the active bevel gear of the bevel gear mechanism is arranged along the length direction of the roller, and the active gear shaft of the active bevel gear extends outward from the bridge housing to form the input shaft of the drive axle, and is connected to the connecting mechanism, the axial direction of the driven bevel gear of the bevel gear mechanism is arranged along the width direction of the roller, and the driven gear shaft of the driven bevel gear extends to both ends of the bridge housing along the axial direction of the driven bevel gear, which is used to connect the driving wheel of the roller.

[0025] In this technical solution, the drive axle includes a bridge housing and a bevel gear mechanism. The bridge housing is a supporting structure and is arranged along the width direction of the roller to provide installation space for the internal transmission equipment and play a supporting and protective role. A bevel gear mechanism is arranged in the bridge housing, including an active bevel gear and a driven bevel gear that mesh with each other. The active gear shaft of the active bevel gear is arranged along the length direction of the roller and extends outward from the bridge housing to form the input shaft of the drive axle, which is connected with the connecting mechanism to obtain power; the axial direction of the driven bevel gear is arranged along the extension direction of the bridge housing, that is, along the width direction of the roller, and the driven gear shaft of the driven bevel gear extends to both ends of the bridge housing respectively, so as to facilitate the transmission connection with the driving wheels on both sides of the roller, thereby realizing the change of power direction, so that the power of the roller can be transmitted to the driving wheels on both sides through the drive axle, and then the driving wheels rotate to realize the travel of the roller. Among them, due to the use of an integrated reducer, the drive axle in this solution does not need to be specially equipped with a planetary reducer and a parking brake, which simplifies the internal structure of the drive axle, improves the versatility of the drive axle, and can use drive axles commonly used in the field of mechanical engineering, which is conducive to reducing costs.

[0026] According to an embodiment of the second aspect of the present invention, a road roller is provided, including: a road roller body, on which a rolling wheel and a driving wheel are provided; a hydraulic driving device, which is arranged on the road roller body; the road roller transmission system according to any one of the embodiments of the first aspect above, which is arranged at the bottom of the road roller body, the input end of the integral speed reducer in the road roller transmission system is connected to the hydraulic driving device, and the driving axle in the road roller transmission system is in transmission connection with the driving wheel.

[0027] According to an embodiment of the second aspect of the present invention, the road roller includes a road roller body, a hydraulic driving device and the road roller transmission system according to any one of the embodiments of the first aspect above. The road roller body, as the base of the road roller, is used to carry various working mechanisms of the road roller. Among them, a rolling wheel and a driving wheel are provided on the road roller body. The hydraulic driving device and the road roller transmission system are arranged on the road roller body, and the road roller transmission system is located at the bottom of the road roller body to facilitate connection with the driving wheel. Specifically, the output end of the hydraulic driving device is connected to the input end of the integral speed reducer in the road roller transmission system. The driving axle in the road roller transmission system is arranged along the width direction of the road roller body, and both ends of the driving axle are in transmission connection with the driving wheel. When the hydraulic driving device works, it drives the integral speed reducer to rotate. The integral speed reducer transmits power to the driving axle through a connecting mechanism, and then transmits the power to the driving wheel through the driving axle, so that the driving wheel rotates to drive the road roller body to travel. Among them, the integral speed reducer can also perform speed reduction and / or braking during the power transmission process to make the rotation speed of the driving wheel meet the construction requirements.

[0028] In addition, the road roller in this solution also has all the beneficial effects of the road roller transmission system according to any one of the embodiments of the first aspect above, which will not be elaborated here.

[0029] The additional aspects and advantages in the embodiments of the present invention will become obvious in the following description part, or will be understood through the practice of the present invention. Description of the Drawings

[0030] The above and / or additional aspects and advantages in the embodiments of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0031] Figure 1 Shows a partial cross-sectional view of a road roller transmission system according to an embodiment of the present invention;

[0032] Figure 2 Shows a partial cross-sectional view of a road roller transmission system according to an embodiment of the present invention;

[0033] Figure 3 Shows a partial cross-sectional view of a road roller transmission system according to an embodiment of the present invention;

[0034] Figure 4 shows a partial cross-sectional view of a road roller transmission system according to an embodiment of the present invention;

[0035] Figure 5 shows an internal schematic diagram of a drive axle according to an embodiment of the present invention;

[0036] Figure 6 shows a partial cross-sectional view of a road roller transmission system according to an embodiment of the present invention;

[0037] Figure 7 shows a partial cross-sectional view of a road roller transmission system according to an embodiment of the present invention;

[0038] Figure 8 shows a schematic block diagram of a road roller according to an embodiment of the present invention.

[0039] Wherein, Figures 1 to 8 the corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0040] 1 road roller transmission system, 11 drive axle, 111 input shaft, 1111 external spline, 112 axle housing, 113 bevel gear mechanism, 1131 driving bevel gear, 1132 driving gear shaft, 1133 driven bevel gear, 1134 driven gear shaft, 12 connecting mechanism, 121 mounting bracket, 1211 mounting base, 1212 mounting end plate, 1213 first through hole, 1214 third through hole, 122 transmission flange, 1221 groove, 1222 second through hole, 1223 internal spline, 13 integral speed reducer, 131 output shaft, 1311 first step portion, 1312 second step portion, 132 input end, 14 connecting bolt, 2 road roller, 21 road roller body, 211 roller, 212 driving wheel, 22 hydraulic driving device. Detailed embodiments

[0041] In order to more clearly understand the above objects, features and advantages in the embodiments according to the present invention, the embodiments according to the present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0042] In the following description, many specific details are set forth in order to fully understand the embodiments according to the present invention. However, the embodiments according to the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0043] The following refers to Figures 1 to 8 describe a road roller transmission system and a road roller according to some embodiments of the present invention.

[0044] Example 1

[0045] In this embodiment, a transmission system 1 for a roller is provided. As Figure 1 shown, the transmission system 1 of the roller includes a drive axle 11, a connecting mechanism 12, and an integrated speed reducer 13.

[0046] The drive axle 11 is used to transmit power to the drive wheels of the roller. The connecting mechanism 12 is disposed between the drive axle 11 and the integrated speed reducer 13, and the connecting mechanism 12 is respectively connected to the input shaft 111 of the drive axle 11 and the output shaft 131 of the integrated speed reducer 13, so that the integrated speed reducer 13 is in transmission connection with the drive axle 11. The input end 132 of the integrated speed reducer 13 is connected to the hydraulic drive device of the roller to obtain the output power of the hydraulic drive device. Among them, the integrated speed reducer 13 integrates the functions of speed reduction and braking.

[0047] When the hydraulic drive device of the roller is working, power is transmitted to the drive axle 11 through the integrated speed reducer 13 and the connecting mechanism 12. The drive axle 11 then transmits the power to the drive wheels of the roller, causing the drive wheels to rotate and driving the roller to travel. Among them, the integrated speed reducer 13 can perform speed reduction and / or braking operations during the power transmission process, so that the rotational speed of the drive wheels meets the construction requirements, ensuring that the roller travels at the required construction speed and compacts the road surface.

[0048] The transmission system 1 of the roller in this embodiment uses an integrated speed reducer 13 for transmission, speed reduction, and / or braking operations, which simplifies the overall structure and connection relationship of the transmission system. At the same time, it provides conditions for simplifying the internal structure of the drive axle 11, and a drive axle 11 with high versatility in the mechanical industry can be used, which is beneficial to improving the reliability of the drive axle 11 and reducing costs.

[0049] Example 2

[0050] In this embodiment, a transmission system 1 for a roller is provided, which is further improved on the basis of Example 1.

[0051] As Figure 2As shown in the figure, the connecting mechanism 12 includes a mounting bracket 121 and a transmission flange 122. The mounting bracket 121 is connected to the drive axle 11 and is located on the side of the drive axle 11 facing the integral speed reducer 13. A first through hole 1213 is correspondingly provided on the mounting bracket 121 for the input shaft 111 of the drive axle 11. The input shaft 111 of the drive axle 11 passes through the first through hole 1213 and extends into the mounting bracket 121, and is connected to the transmission flange 122. One end of the transmission flange 122 away from the drive axle 11 is connected to the output shaft 131 of the integral speed reducer 13, so that the integral speed reducer 13 and the drive axle 11 are in transmission connection and power is transmitted between the integral speed reducer 13 and the drive axle 11. The mounting bracket 121 provides support and protection for the transmission connection between the integral speed reducer 13 and the drive axle 11.

[0052] Among them, the input shaft 111 of the drive axle 11 is indirectly connected to the output shaft 131 of the integral speed reducer 13. When assembling the integral speed reducer 13 with drive axles of different models or structures, only the transmission flange 122 needs to be processed, without processing the drive axle or the integral speed reducer 13, which is beneficial to reducing the processing difficulty and cost and enhancing the versatility of the transmission system.

[0053] Embodiment III

[0054] In this embodiment, a transmission system 1 for a roller is provided, which is further improved on the basis of Embodiment II.

[0055] As Figure 2 and Figure 3 shown in the figure, a groove 1221 is provided at one end of the transmission flange 122 facing the integral speed reducer 13, and the groove 1221 is recessed in the direction away from the integral speed reducer 13. The output shaft 131 of the integral speed reducer 13 extends into the groove 1221 and is connected to the transmission flange 122. The shape of the groove 1221 is adapted to the shape of the output shaft 131 of the integral speed reducer 13, which is convenient for connection. Among them, the output shaft 131 of the integral speed reducer 13 is detachably connected to the transmission flange 122, which is convenient for disassembly and assembly.

[0056] Furthermore, a first stepped portion 1311 protruding radially is provided on the output shaft 131 of the integral speed reducer 13. The first stepped portion 1311 is fixedly connected to the end face of the transmission flange 122 through a connecting bolt 14 to enhance the connection strength and reliability and facilitate disassembly and assembly. Among them, the number of the connecting bolts 14 is multiple and they are arranged at intervals along the circumferential direction of the transmission flange 122.

[0057] Further, among the multiple connecting bolts 14, at least two connecting bolts 14 have different thread helix directions, so as to generate opposite acting forces on the first stepped portion 1311 through the differences in the two thread movement trends, prevent the connecting bolts 14 from loosening under long-term vibration and impact, and make the fixation more firm.

[0058] Furthermore, a second through hole 1222 is correspondingly provided on the transmission flange 122 at a position corresponding to the first through hole 1213. An internal spline 1223 is machined on the inner wall surface of the second through hole 1222, so that the transmission flange 122 forms a spline sleeve; an external spline 1111 is machined on the input shaft 111 of the drive axle 11. The input shaft 111 of the drive axle 11 extends into the second through hole 1222, and through the cooperation between the internal spline 1223 and the external spline 1111, the input shaft 111 of the drive axle 11 rotates together with the transmission flange 122, realizing the transmission connection between the drive axle 11 and the integral speed reducer 13. Among them, the spline fit has a high strength, can bear a large torque, and is simple to disassemble and assemble, facilitating assembly.

[0059] Embodiment 4

[0060] In this embodiment, a road roller transmission system 1 is provided, which is further improved on the basis of Embodiment 2.

[0061] As Figure 2 and Figure 4 shown, the mounting bracket 121 includes a mounting base 1211 and a mounting end plate 1212. The mounting base 1211 is a hollow structure and is fixedly connected to the drive axle 11 through the connecting bolts 14; a first through hole 1213 is provided on the end face of one end of the mounting base 1211 facing the drive axle 11, and an opening is provided at one end of the mounting base 1211 facing the integral speed reducer 13. Among them, the transmission flange 122 is located inside the mounting base 1211. An mounting end plate 1212 is provided at the opening of the mounting base 1211 and is detachably connected to the mounting base 1211; a third through hole 1214 is provided on the mounting end plate 1212, and the output shaft 131 of the integral speed reducer 13 passes through the third through hole 1214 and extends into the mounting base 1211 and is connected to the output shaft 131 of the integral speed reducer 13. The mounting end plate 1212 blocks the opening of the mounting base 1211, thereby protecting the transmission flange 122 and playing a role in supporting and radially positioning the output shaft 131 of the integral speed reducer 13, and preventing the output shaft 131 of the integral speed reducer 13 from shaking during rotation.

[0062] Furthermore, a second step portion 1312 is provided in the portion of the output shaft 131 of the integrated reducer 13 located within the mounting base 1211, and the second step portion 1312 protrudes radially, so that the diameter of the output shaft 131 of the integrated reducer 13 at the position of the second step portion 1312 is greater than the diameter of the third through hole 1214, so that the end face of the second step portion 1312 is abutted against one end of the mounting end plate 1212 toward the transmission flange 122, thereby realizing axial limitation of the output shaft 131 of the integrated reducer 13 to prevent axial movement during rotation, thereby further improving the stability of the transmission system.

[0063] Furthermore, the mounting base 1211 and the transmission flange 122 are both cylindrical structures to match the output shaft 131 of the integrated reducer 13, which is convenient for positioning and assembly. At the same time, it can improve the stability during rotation and help reduce shaking.

[0064] Embodiment 5

[0065] This embodiment provides a road roller transmission system 1, which is further improved on the basis of the first embodiment.

[0066] like Figure 1 and Figure 5 As shown, the drive axle 11 includes a bridge housing 112 and a bevel gear mechanism 113. The bridge housing 112 is arranged along the width direction of the roller to provide an installation space for the bevel gear mechanism 113 and to play a supporting and protective role. The bevel gear mechanism 113 includes a driving bevel gear 1131 and a driven bevel gear 1133 that mesh with each other, and the axial direction of the driving bevel gear 1131 is arranged along the length direction of the roller, and the axial direction of the driven bevel gear 1133 is arranged along the width direction of the roller, so as to change the transmission direction through the meshing between the driving bevel gear 1131 and the driven bevel gear 1133.

[0067] The driving bevel gear 1131 is provided with a driving gear shaft 1132 extending in the axial direction, and the driving gear shaft 1132 extends outward from the bridge housing 112 to form the input shaft 111 of the drive bridge 11, and is connected with the connecting mechanism 12 to obtain power. The driven bevel gear 1133 is provided with a driven gear shaft 1134 extending in the axial direction, that is, the driven gear shaft 1134 is arranged along the width direction of the roller and extends to both ends of the bridge housing 112, so as to facilitate transmission connection with the driving wheels on both sides of the roller.

[0068] During the transmission process, the bevel gear mechanism 113 of the drive axle 11 changes the transmission direction of power, so that the power of the roller can be transmitted to the driving wheels on both sides through the drive axle 11, thereby driving the roller to travel.

[0069] It should be noted that since the integrated speed reducer 13 is adopted, there is no need to specifically set a planetary speed reducer and a parking brake in the drive axle 11 of this embodiment, which simplifies the internal structure of the drive axle 11. A drive axle commonly used in the field of mechanical engineering can be adopted, improving the versatility of the drive axle and facilitating cost reduction.

[0070] Embodiment Six

[0071] In this embodiment, a transmission system 1 for a roller is provided, which is used for a roller. As Figure 6 and Figure 7 shown, the roller transmission system 1 includes a drive axle 11, a connecting mechanism 12, and an integrated speed reducer 13.

[0072] The drive axle 11 is used to transmit power to the drive wheels of the roller. The connecting mechanism 12 is arranged between the drive axle 11 and the integrated speed reducer 13, and the connecting mechanism 12 is respectively connected to the input shaft 111 of the drive axle 11 and the output shaft 131 of the integrated speed reducer 13, so that the integrated speed reducer 13 is in transmission connection with the drive axle 11. The input end 132 of the integrated speed reducer 13 is connected to the hydraulic drive device of the roller to obtain the output power of the hydraulic drive device. Among them, the integrated speed reducer 13 integrates the functions of speed reduction and braking.

[0073] The connecting mechanism 12 includes a mounting bracket 121 and a transmission flange 122. The mounting bracket 121 is connected to the drive axle 11 and is located on the side of the drive axle 11 facing the integrated speed reducer 13. Specifically, the mounting bracket 121 includes a mounting base 1211 and a mounting end plate 1212. The mounting base 1211 is a cylindrical hollow structure and is fixedly connected to the drive axle 11 through connecting bolts 14; a first through hole 1213 is provided on the end face of the mounting base 1211 facing the drive axle 11, and an opening is provided at the end of the mounting base 1211 facing the integrated speed reducer 13. A mounting end plate 1212 is provided at the opening of the mounting base 1211 and is detachably connected to the mounting base 1211, and a third through hole 1214 opposite to the first through hole 1213 is provided on the mounting end plate 1212.

[0074] The transmission flange 122 is a hollow cylindrical structure, which is arranged in the mounting base 1211. The transmission flange 122 is provided with a second through hole 1222 corresponding to the first through hole 1213. An internal spline 1223 is processed on the inner wall surface of the second through hole 1222, so that the transmission flange 122 forms a spline sleeve; an external spline 1111 is processed on the input shaft 111 of the drive axle 11. The input shaft 111 of the drive axle 11 extends into the first through hole 1213 and the second through hole 1222, and through the cooperation between the internal spline 1223 and the external spline 1111, the input shaft 111 of the drive axle 11 forms a transmission connection with the transmission flange 122. A groove 1221 is provided at one end of the transmission flange 122 facing the integrated reducer 13, and the groove 1221 is recessed in a direction away from the integrated reducer 13; the output shaft 131 of the integrated reducer 13 passes through the third through hole 1214 and extends into the groove 1221, and is fixedly connected to the transmission flange 122 by the connecting bolt 14. The shape of the groove 1221 is adapted to the shape of the output shaft 131 of the integrated reducer 13, which is convenient for connection. The mounting end plate 1212 blocks the opening of the mounting base 1211, thereby protecting the transmission flange 122, and supporting and radially positioning the output shaft 131 of the integrated reducer 13, which can prevent the output shaft 131 of the integrated reducer 13 from shaking during rotation.

[0075] The output shaft 131 of the integrated reducer 13 is provided with a first step portion 1311 and a second step portion 1312 protruding in the radial direction. The first step portion 1311 is fixedly connected to the end face of the transmission flange 122 by the connecting bolt 14 to enhance the connection strength and reliability. There are multiple connecting bolts 14, which are arranged at intervals along the circumferential direction of the transmission flange 122, and at least two connecting bolts 14 have different thread rotation directions, so that the first step portion 1311 is subjected to opposite forces through the different movement trends of the two threads, so as to prevent the connecting bolts 14 from loosening under long-term vibration impact. The second step portion 1312 is located between the first step portion 1311 and the mounting end plate 1212, and the diameter of the output shaft 131 of the integrated reducer 13 at the second step portion 1312 is greater than the diameter of the third through hole 1214, so that the end face of the second step portion 1312 is abutted against one end of the mounting end plate 1212 toward the transmission flange 122, thereby realizing axial limitation of the output shaft 131 of the integrated reducer 13 to prevent axial movement during rotation, thereby further improving the stability of the transmission system.

[0076] The drive axle 11 specifically includes a axle housing 112 and a bevel gear mechanism 113. The axle housing 112 is arranged along the width direction of the road roller to provide an installation space for the bevel gear mechanism 113 and play a role in support and protection. The bevel gear mechanism 113 includes a driving bevel gear 1131 and a driven bevel gear 1133 that mesh with each other. The axial direction of the driving bevel gear 1131 is arranged along the length direction of the road roller, and the axial direction of the driven bevel gear 1133 is arranged along the width direction of the road roller to change the transmission direction through the meshing between the driving bevel gear 1131 and the driven bevel gear 1133.

[0077] The driving bevel gear 1131 is provided with a driving gear shaft 1132 extending along the axial direction, and the driving gear shaft 1132 extends outwards from the axle housing 112 to form the input shaft 111 of the drive axle 11, and is connected with the transmission flange 122 of the connecting mechanism 12 through spline fit to obtain power. The driven bevel gear 1133 is provided with a driven gear shaft 1134 extending along the axial direction, that is, the driven gear shaft 1134 is arranged along the width direction of the road roller and extends towards both ends of the axle housing 112 to facilitate the transmission connection with the drive wheels on both sides of the road roller. It should be noted that due to the adoption of the integrated speed reducer 13, there is no need to specifically set a planetary reducer and a parking brake in the drive axle 11 of this embodiment, which simplifies the internal structure of the drive axle 11.

[0078] When the hydraulic drive device of the road roller works, power is transmitted to the drive axle 11 through the integrated speed reducer 13 and the transmission flange 122 of the connecting mechanism 12. The bevel gear mechanism 113 of the drive axle 11 changes the power transmission direction and transmits the power to the drive wheels on both sides of the road roller, causing the drive wheels to rotate and driving the road roller to travel. Among them, the integrated speed reducer 13 can perform deceleration and / or braking operations during the power transmission process to make the rotation speed of the drive wheels meet the construction requirements, ensure that the road roller travels at the construction required speed, and compact the road surface.

[0079] In the road roller transmission system 1 of this embodiment, the integrated speed reducer 13 is adopted for transmission, deceleration and / or braking operations, which simplifies the overall structure and connection relationship of the road roller transmission system 1, and at the same time simplifies the internal structure of the drive axle 11. A drive axle with high versatility in the mechanical industry can be adopted, which is beneficial to improving the reliability of the drive axle and reducing costs at the same time.

[0080] Embodiment Seven

[0081] In this embodiment, a road roller 2 is provided, as Figure 1 and Figure 8 shown. The road roller 2 includes a road roller body 21, a hydraulic drive device 22 and the road roller transmission system 1 in any of the above embodiments.

[0082] The road roller body 21 serves as the base of the road roller 2 and is used to carry various working mechanisms of the road roller 2. Among them, a roller 211 and a driving wheel 212 are provided on the road roller body 21. The hydraulic drive device 22 is provided on the road roller body 21 and is used to output power. The road roller transmission system 1 is provided at the bottom of the road roller body 21 for easy connection with the driving wheel 212. Specifically, the input end 132 of the integral speed reducer 13 in the road roller transmission system 1 is connected to the hydraulic drive device 22, and the drive axle 11 in the road roller transmission system 1 is arranged along the width direction of the road roller body 21, and both ends of the drive axle 11 are respectively in transmission connection with the driving wheel 212.

[0083] When the hydraulic drive device 22 works, it drives the integral speed reducer 13 to rotate. The integral speed reducer 13 transmits power to the drive axle 11 through the connection mechanism 12, and then transmits the power to the driving wheel 212 through the drive axle 11, so that the driving wheel 212 rotates and drives the road roller body 21 to travel. Among them, the integral speed reducer 13 can perform speed reduction and / or braking during the power transmission process, so that the rotation speed of the driving wheel 212 meets the construction requirements, and drives the roller 211 to perform compaction operations.

[0084] In addition, the road roller 2 in this embodiment also has all the beneficial effects of the road roller transmission system 1 in any of the above embodiments, which will not be elaborated here.

[0085] The above has described in detail the technical solutions of some embodiments according to the present invention with reference to the accompanying drawings. By using an integral speed reducer for transmission, speed reduction and / or braking operations, the overall structure and connection relationship of the road roller transmission system are simplified. At the same time, the internal structure of the drive axle is simplified, and a drive axle with relatively high versatility in the mechanical industry can be used, which is beneficial to improving the reliability of the drive axle and reducing costs at the same time.

[0086] In the embodiments according to the present invention, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; the term "plurality" means two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments according to the present invention can be understood according to specific situations.

[0087] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present invention and for simplification, rather than indicating or implying that the device or unit referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be construed as a limitation to the technical solutions of the present application.

[0088] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0089] The above are only the preferred embodiments according to the present invention, and are not used to limit the technical solutions of the present application. For those skilled in the art, the technical solutions of the present application can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the technical solutions of the present application shall be included within the protection scope of the present application.

Claims

1. A road roller transmission system (1), characterized in that, it includes: a drive axle (11); a connecting mechanism (12) connected to the input shaft (111) of the drive axle (11); an integrated speed reducer (13), the output shaft (131) of the integrated speed reducer (13) is connected to the connecting mechanism (12), and the input end (132) of the integrated speed reducer (13) is used to connect to the hydraulic drive device (22) of the road roller (2); wherein, the integrated speed reducer (13) is used to transmit the output power of the hydraulic drive device (22) to the drive axle (11), and decelerate and / or brake during the power transmission process; the connecting mechanism (12) includes: a mounting bracket (121), the mounting bracket (121) is connected to the drive axle (11), and a first through hole (1213) corresponding to the input shaft (111) of the drive axle (11) is provided on the mounting bracket (121); a transmission flange (122), one end of the transmission flange (122) is connected to the output shaft (131) of the integrated speed reducer (13); wherein, the input shaft (111) of the drive axle (11) passes through the first through hole (1213) and is connected to the other end of the transmission flange (122); the mounting bracket (121) includes: a mounting base (1211), the mounting base (1211) is a hollow structure, and an opening is provided at one end of the mounting base (1211) facing the integrated speed reducer (13); a mounting end plate (1212) provided at the opening and detachably connected to the mounting base (1211), and a third through hole (1214) is provided on the mounting end plate (1212); wherein, the transmission flange (122) is arranged inside the mounting base (1211), and the output shaft (131) of the integrated speed reducer (13) extends into the mounting base (1211) through the third through hole (1214) and is connected to the transmission flange (122); a second step portion (1312) is provided on the portion of the output shaft (131) of the integrated speed reducer (13) located inside the mounting base (1211), the second step portion (1312) protrudes radially, and the end face of the second step portion (1312) abuts against the mounting end plate (1212); both the mounting base (1211) and the transmission flange (122) are cylindrical structures.

2. The road roller transmission system (1) according to claim 1, characterized in that, a groove (1221) is provided at one end of the transmission flange (122) facing the integrated speed reducer (13), and the output shaft (131) of the integrated speed reducer (13) extends into the groove (1221) and is detachably connected to the transmission flange (122).

3. The road roller transmission system (1) according to claim 2, characterized in that, A first step portion (1311) is provided on the output shaft (131) of the integral speed reducer (13). The first step portion (1311) protrudes radially and forms a bolt connection with the end face of the transmission flange (122).

4. The road roller transmission system (1) according to claim 2, wherein, the transmission flange (122) is provided with a second through hole (1222) corresponding to the first through hole (1213), and an internal spline (1223) is provided in the second through hole (1222); the input shaft (111) of the drive axle (11) is provided with an external spline (1111), and the external spline (1111) cooperates with the internal spline (1223) to achieve a transmission connection between the integral speed reducer (13) and the drive axle (11).

5. The road roller transmission system (1) according to claim 1, wherein, the drive axle (11) includes: a housing (112) arranged along the width direction of the road roller (2); a bevel gear mechanism (113) arranged in the housing (112). The axial direction of the driving bevel gear (1131) of the bevel gear mechanism (113) is arranged along the length direction of the road roller (2), and the driving gear shaft (1132) of the driving bevel gear (1131) extends outwards from the housing (112) to form the input shaft (111) of the drive axle (11) and is connected to the connecting mechanism (12). The axial direction of the driven bevel gear (1133) of the bevel gear mechanism (113) is arranged along the width direction of the road roller (2), and the driven gear shaft (1134) of the driven bevel gear (1133) extends towards both ends of the housing (112) along the axial direction of the driven bevel gear (1133) for connecting the drive wheels (212) of the road roller (2).

6. A road roller (2), wherein, it includes: a road roller body (21) provided with a roller (211) and drive wheels (212); a hydraulic drive device (22) arranged on the road roller body (21); the road roller transmission system (1) according to any one of claims 1 to 5, arranged at the bottom of the road roller body (21). The input end (132) of the integral speed reducer (13) in the road roller transmission system (1) is connected to the hydraulic drive device (22), and the drive axle (11) in the road roller transmission system (1) is in transmission connection with the drive wheels (212).

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