An output shaft support device and a paver

Abstract

The present invention discloses an output shaft support device and a paver, which include a support bracket, a left bearing, a right bearing, a left connecting shaft and a right connecting shaft. A cavity is provided inside the support bracket, and two bearing mounting holes are symmetrically provided inside the cavity. The outer rings of the left bearing and the right bearing are respectively connected in the two bearing mounting holes; the support bracket is fixed on the frame. One end of the left connecting shaft is connected to the inner ring of the left bearing, and the other end is used to connect to the output shaft of the left reducer; one end of the right connecting shaft is connected to the inner ring of the right bearing, and the other end is used to connect to the output shaft of the right reducer. The left connecting shaft and the right connecting shaft designed in the support device transfer the radial force borne by the output shaft of the reducer to the connecting shaft, and further transfer the force to the frame through the support bracket, ensuring the smooth operation of the output shaft of the reducer, reducing the risks of damage to gears, bearings and oil seals and oil leakage, and improving the reliability of the system operation.

Description

Technical Field

[0001] The present invention relates to the technical field of pavers, and particularly relates to an output shaft support device and a paver. Background Art

[0002] At present, in pavement paving construction, the material distribution box is one of the important working mechanisms of the paver. In the current material distribution system, the material distribution box is driven by a speed reducer, and the material distribution drive shaft is the output shaft of the speed reducer. In actual work, the output shaft of the speed reducer is connected to a sprocket, and the sprocket drives the material distribution screw through chain drive to achieve the material distribution operation. In a conventional mechanism, the output shaft of the speed reducer adopts a cantilever type and is subjected to a large radial force during work. In addition, the material distribution screw is subjected to an impact force during work, and this impact force will ultimately be transmitted to the output shaft of the speed reducer. Moreover, the impact force generated by the structure of the chain itself will also be transmitted from the sprocket to the output shaft of the speed reducer. Therefore, the output shaft of the speed reducer is not only subjected to a large radial force during work, but also subjected to a periodically changing impact torque. This operating condition often causes problems such as gear damage, bearing failure, and oil leakage from the oil seal in the speed reducer, greatly reducing the reliability of the speed reducer in the material distribution system and directly having an adverse impact on the paving work of the paver. Summary of the Invention

[0003] The purpose of the present invention is to provide an output shaft support device and a paver to solve the problems of gear damage and bearing failure of the output shaft of the speed reducer in the prior art due to the radial force and impact torque borne.

[0004] To achieve the above purpose, the present invention is implemented by adopting the following technical solutions:

[0005] An output shaft support device includes a support bracket, a left bearing, a right bearing, a left connecting shaft, and a right connecting shaft. A cavity is provided inside the support bracket, and two bearing mounting holes are symmetrically provided inside the cavity. The outer rings of the left bearing and the right bearing are respectively connected in the two bearing mounting holes; the support bracket is fixed on the frame, one end of the left connecting shaft is connected to the inner ring of the left bearing, and the other end is used for connecting to the left speed reducer output shaft; one end of the right connecting shaft is connected to the inner ring of the right bearing, and the other end is used for connecting to the right speed reducer output shaft.

[0006] Furthermore, it further includes a left connecting screw and a right connecting screw. The left connecting screw penetrates through the axis of the left connecting shaft and is connected to the connection hole of the left speed reducer output shaft, and the right connecting screw penetrates through the axis of the right connecting shaft and is connected to the connection hole of the right speed reducer output shaft.

[0007] Furthermore, the connection holes of the left speed reducer output shaft, the connection holes of the right speed reducer output shaft, the left bearing, and the right bearing are coaxially arranged.

[0008] Further, a retaining ring mounting groove is also provided in the cavity. The retaining ring mounting groove is located between the two bearing mounting holes. A circlip for hole is connected in the retaining ring mounting groove. The circlip for hole is located between the outer rings of the left bearing and the right bearing.

[0009] Further, an oil filling hole is also provided on the support bracket. The oil filling hole is communicated with the cavity. The opening of the circlip for hole faces the oil filling hole.

[0010] Further, two oil seal mounting holes are symmetrically provided in the cavity. The two oil seal mounting holes are respectively located on both sides of the two bearing mounting holes. A left oil seal and a right oil seal are respectively installed in the two oil seal mounting holes.

[0011] Further, journal shafts are provided on both the left connecting shaft and the right connecting shaft. The inner ring of the left oil seal is matched with the journal shaft of the left connecting shaft. The inner ring of the right oil seal is matched with the journal shaft of the right connecting shaft.

[0012] Further, both the left bearing and the right bearing are cylindrical roller bearings.

[0013] The present invention provides a paver, and the paver includes the support device proposed by the present invention.

[0014] Further, the paver further includes a left sprocket fixed on the output shaft of the left speed reducer and a right sprocket fixed on the output shaft of the right speed reducer; the outer circle of the left connecting shaft is matched with the inner circle of the left sprocket, and the outer circle of the right connecting shaft is matched with the inner circle of the right sprocket.

[0015] The advantages of the present invention are as follows:

[0016] 1. The left connecting shaft and the right connecting shaft designed in the support device of the present invention are respectively used to connect the output shafts of the left speed reducer and the right speed reducer, transfer the radial force borne by the output shafts of the speed reducer to the connecting shafts, and further transfer the force to the frame through the support bracket, ensuring the smooth operation of the output shafts of the speed reducer, reducing the risk of damage and oil leakage of gears, bearings and oil seals, and improving the reliability of the system operation;

[0017] 2. The connecting holes of the left speed reducer output shaft, the connecting holes of the right speed reducer output shaft, the left bearing and the right bearing are coaxially arranged, improving the support effect;

[0018] 3. The opening of the circlip for hole faces the oil filling hole. When adding lubricating grease, the lubricating grease can quickly flow into the bearing, facilitating the lubrication of the bearing;

[0019] 4. The settings of the left oil seal and the right oil seal prevent the lubricating grease in the bearing from leaking to the outside;

[0020] 5. The bearing adopts a cylindrical roller bearing, which can bear a large radial load and is suitable for the heavy load and impact load conditions in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the support device and the paver connected in the specific embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the specific structure of the support device in the specific embodiment of the present invention.

[0023] Wherein: 1. Support bracket; 2. Left oil seal; 3. Left connecting shaft; 4. Left connecting screw; 5. Left bearing; 6. Circlip for hole; 7. Right oil seal; 8. Right connecting shaft; 9. Right connecting screw; 10. Right bearing; 11. Oil groove. SPECIFIC EMBODIMENTS

[0024] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0025] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "up", "down", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. The terms "front", "rear", "left", "right", "up", "down" used in the description of the present invention refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0026] As Figures 1 to 2 shown, an output shaft support device and a paver, the support device provides radial support for the output shaft of the splitting speed reducer to achieve the purpose of improving the reliability of the speed reducer.

[0027] The support bracket 1 is welded to the paver frame. The support bracket 1 is machined with an oil seal mounting hole, a bearing mounting hole, a retaining ring mounting groove and an oil groove 11, which are respectively used for installing the left oil seal 2 and the right oil seal 7, the outer rings of the left bearing 5 and the right bearing 10 and the shaft-mounted snap ring 6. The shaft-mounted snap ring 6 is used to separate the outer rings of the left bearing 5 and the right bearing 10. The oil groove 11 is used to introduce lubricating grease to lubricate the left bearing 5 and the right bearing 10. The shaft-mounted snap ring 6 is installed in the retaining groove inside the support bracket 1, and the opening of the snap ring faces the oil groove 11, facilitating the passage of the lubricating grease and entering the cavity of the support bracket 1. On one side of the left connecting shaft 3 and the right connecting shaft 8, the inner rings of the left bearing 5 and the right bearing 10 are installed. Through these bearings, the left connecting shaft 3 and the right connecting shaft 8 are connected to the support bracket 1, and the operations of the left connecting shaft 3 and the right connecting shaft 8 are independent of each other without interference. The left bearing 5 and the right bearing 10 can be of a split type for convenient installation. The left connecting shaft 3 and the right connecting shaft 8 are machined with journal necks for mating with the inner rings of the oil seals installed on the support bracket 1 to prevent the leakage of lubricating grease.

[0028] On the other side of the left connecting shaft 3 and the right connecting shaft 8, the outer circles are mated with the inner circles of the left sprocket and the right sprocket, and are firmly connected to the output shafts of the left reducer and the right reducer through the left connecting screw 4 and the right connecting screw 9. Then, the left sprocket and the right sprocket are passed through the mounting holes of the left reducer bracket and the right reducer bracket, so that the left connecting shaft 3 and the right connecting shaft 8 are correctly mated with the oil seals and bearings on the support bracket 1.

[0029] The left reducer bracket, the right reducer bracket and the support bracket 1 are all welded to the frame, and after welding, the inner holes for installing the left reducer, the inner holes for installing the right reducer and the inner holes on the support bracket 1 are machined in one clamping to ensure coaxiality, improve the support effect, and make the mounting holes of the left and right reducer brackets larger than the maximum outer diameter of the left and right sprockets for easy installation.

[0030] Specifically, as Figures 1 - 2 shown. The support device includes a support bracket 1, a left bearing 5, a right bearing 10, a left connecting shaft 3 and a right connecting shaft 8. The support bracket 1 is provided with a cavity inside, and two bearing mounting holes are symmetrically arranged in the cavity. The outer rings of the left bearing 5 and the right bearing 10 are respectively connected in the two bearing mounting holes. The support bracket 1 is welded to the frame. The right end of the left connecting shaft 3 is connected to the inner ring of the left bearing 5 and is used to connect the output shaft of the left reducer. The left end of the right connecting shaft 8 is connected to the inner ring of the right bearing, and the right end is used to connect the output shaft of the right reducer. In the support device of the present invention, the designed left connecting shaft and right connecting shaft are respectively used to connect the output shafts of the left reducer and the right reducer, transfer the radial force borne by the reducer output shaft to the connecting shaft, and further transfer the force to the frame through the support bracket, ensuring the stable operation of the reducer output shaft, reducing the risk of damage and oil leakage of gears, bearings and oil seals, and improving the reliability of the system operation.

[0031] In this embodiment, the support bracket 1 is welded to the paver frame. The support bracket 1 is provided with a hollow cavity inside. A retaining ring mounting groove is machined in the cavity. Two symmetrical bearing mounting holes are machined on the left and right sides of the retaining ring mounting groove. The specifications of the two bearing mounting holes are the same, and the centers of the two bearing mounting holes coincide. Oil seal mounting holes are machined on the left and right sides of the two bearing mounting holes respectively. An oil groove 11 is machined on the support bracket 1. The oil groove 11 is communicated with the cavity through an oil filling hole. When lubricating grease is added to the oil groove, the lubricating grease will flow into the cavity.

[0032] In this embodiment, the left connecting shaft 3 and the right connecting shaft 8 have the same structure, specifically as Figure 2 shown. The left connecting shaft 3 includes three sections of structure. The right section of the shaft is used to connect with the inner ring of the left bearing 5, and the right section of the shaft is used to cooperate with the inner circle of the left sprocket. The shaft diameter of the middle section of the shaft neck is larger than that of the left section of the shaft and larger than that of the right section of the shaft neck. Correspondingly, the left bearing 5 and the right bearing 10 are the same.

[0033] In this embodiment, the connection method between the support device and the output shaft can be divided into two connection methods. The following is a brief description of the two connection methods. According to different types of bearings, the connection and assembly processes are different. If the left bearing 5 and the right bearing 10 are split bearings, the specific connection process is as follows: When connecting, install the inner ring of the left bearing 5 on the right section of the left connecting shaft 3, fix the outer ring of the left bearing 5 in the bearing mounting hole, and the assembly of the left connecting shaft 3 and the left bearing 5 is realized after assembling the inner and outer rings of the bearing. Further, a screw hole is machined on the central axis of the left connecting shaft 3. The left connecting screw 4 passes through the screw hole and is tightly connected to the connecting hole in the left reducer output shaft. The connecting hole of the left reducer output shaft is located on the central axis of the output shaft. That is, the connecting hole of the left reducer output shaft, the left bearing 5 and the central axis of the left connecting shaft 3 are on the same straight line, improving the support effect.

[0034] The left oil seal 2 is installed in the oil seal mounting hole. The diameter of the oil seal mounting hole is larger than that of the bearing mounting hole. During assembly, the middle section of the shaft neck of the left connecting shaft 3 cooperates with the inner ring of the left oil seal 2 to prevent the leakage of lubricating grease. The left end of the left connecting shaft 3 is used to assemble with the left sprocket. The hole-type snap ring 6 is installed in the retaining ring mounting groove of the support bracket 1, between the left bearing 5 and the right bearing 10. The opening of the snap ring faces the oil groove 11, facilitating the passage of lubricating grease and entering the cavity of the support bracket 1.

[0035] In this embodiment, if the left bearing 5 and the right bearing 10 adopt an integral structure, during assembly, directly fix the left bearing 5 in the bearing mounting hole, and then fix the right section of the shaft of the left connecting shaft 3 in the inner ring of the left bearing 5. The remaining assembly process is the same as that of the split type.

[0036] In this embodiment, a paver is further provided, and the paver includes a support device.

[0037] As is known by technical common sense, the present invention can be implemented by other embodiments without departing from its spirit or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. An output shaft support device, characterized in that, it includes a support bracket (1), a left bearing (5), a right bearing (10), a left connecting shaft (3) and a right connecting shaft (8). A cavity is provided inside the support bracket (1), and two bearing mounting holes are symmetrically provided inside the cavity. The outer rings of the left bearing (5) and the right bearing (10) are respectively connected in the two bearing mounting holes; the support bracket (1) is fixed on the frame. One end of the left connecting shaft (3) is connected to the inner ring of the left bearing (5), and the other end is used to connect to the output shaft of the left reducer; One end of the right connecting shaft (8) is connected to the inner ring of the right bearing (10), and the other end is used to connect to the output shaft of the right reducer; It further includes a left connecting screw (4) and a right connecting screw (9). The left connecting screw (4) passes through the axis of the left connecting shaft (3) and is connected to the connecting hole of the output shaft of the left reducer. The right connecting screw (9) passes through the axis of the right connecting shaft (8) and is connected to the connecting hole of the output shaft of the right reducer; It further includes a left sprocket fixed on the output shaft of the left reducer and a right sprocket fixed on the output shaft of the right reducer; the outer circle of the left connecting shaft (3) is matched with the inner circle of the left sprocket, and the outer circle of the right connecting shaft (8) is matched with the inner circle of the right sprocket; The left connecting shaft and the right connecting shaft have the same structure. The left connecting shaft includes three sections of structure. The right section of the shaft is used to connect to the inner ring of the left bearing. The left section of the shaft is used to match with the inner circle of the left sprocket. The shaft diameter of the middle section of the shaft is larger than that of the left section of the shaft and larger than that of the right section of the shaft. The diameter of the left section of the shaft is larger than the output shaft of the reducer.

2. The output shaft support device according to claim 1, characterized in that, the connecting holes of the output shaft of the left reducer, the connecting holes of the output shaft of the right reducer, the left bearing (5) and the right bearing (10) are coaxially arranged.

3. The output shaft support device according to claim 1, characterized in that, a retaining ring mounting groove is further provided inside the cavity. The retaining ring mounting groove is located between the two bearing mounting holes. A circlip for hole (6) is connected in the retaining ring mounting groove. The circlip for hole (6) is located between the outer rings of the left bearing (5) and the right bearing (10).

4. The output shaft support device according to claim 3, characterized in that, an oil filling hole is further provided on the support bracket (1). The oil filling hole is communicated with the cavity. The opening of the circlip for hole (6) faces the oil filling hole.

5. The output shaft support device according to claim 1, characterized in that, two oil seal mounting holes are symmetrically provided inside the cavity. The two oil seal mounting holes are respectively located on both sides of the two bearing mounting holes. A left oil seal (2) and a right oil seal (7) are respectively installed in the two oil seal mounting holes.

6. The output shaft support device according to claim 5, characterized in that, shaft necks are provided on both the left connecting shaft (3) and the right connecting shaft (8). The inner circle of the left oil seal (2) is matched with the shaft neck of the left connecting shaft (3), and the inner circle of the right oil seal (7) is matched with the shaft neck of the right connecting shaft (8).

7. The output shaft support device according to claim 1, wherein, the left bearing (5) and the right bearing (10) are both cylindrical roller bearings.

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