Planetary speed reducer

Abstract

The invention belongs to the technical field of transmission, and discloses a planetary reduction gear which comprises a box body, an input shaft, a sun gear installed on the input shaft and a plurality of planetary gears, the gear width of the sun gear is larger than or equal to two times of the gear width of the planetary gears, two sliding grooves are formed in the box body, a sliding seat is embedded in each sliding groove, an input bearing is installed on each sliding seat, and the input bearings are arranged on the input shafts. An inner ring of the input bearing is fixedly installed on the input shaft, a plurality of adjusting columns are arranged on the box body, the adjusting columns and the box body are in reciprocating motion sealing, the adjusting columns abut against the end faces of the two ends of the sliding base respectively, a support is arranged on the outer wall of the box body, and the support is in threaded connection with a plurality of adjusting bolts. When the sun gear is abraded or damaged, the box body of the planetary speed reducer does not need to be disassembled, and the planetary speed reducer can continue to work by adjusting the positions of the second shaft of the input shaft and the sun gear, so that the service life of the sun gear is prolonged, and stable operation of the planetary speed reducer is ensured.

Description

Technical Field

[0001] The invention belongs to the field of transmission technology, and in particular relates to a planetary reduction device. Background Art

[0002] The planetary gear reducer includes solar energy, planet carrier, planetary gear, and ring gear. The planetary gear meshes with the sun gear and the ring gear at the same time. The rotation of the sun gear drives the planetary gear to move. The planetary gear not only rotates around its own axis, but also revolves around the sun gear. The planetary gear system has the advantages of large transmission ratio reduction transmission and compact structure, and is widely used. During the transmission process, the sun gear is subject to load, which is prone to wear and even broken teeth during operation. It is necessary to disassemble the planetary reduction device to replace the sun gear. The disassembly and assembly process is very cumbersome and time-consuming. Summary of the invention

[0003] The object of the present invention is to provide a planetary reduction gear which has the effect that the planetary reduction gear does not need to be disassembled after the sun gear is worn.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: a planetary reduction device, including a housing, an input shaft, a sun gear installed on the input shaft, and a plurality of planetary gears, wherein the tooth width of the sun gear is greater than or equal to twice the tooth width of the planetary gears, two slide grooves are arranged in the housing, each of the slide grooves is embedded with a slide seat, an input bearing is installed on the slide seat, and the inner ring of the input bearing is fixedly installed on the input shaft, a plurality of adjusting columns are arranged on the housing, and a reciprocating seal is formed between the adjusting columns and the housing, and a plurality of the adjusting columns respectively abut against the end faces of both ends of the slide seat, a support is arranged on the outer wall of the housing, and a plurality of adjusting bolts are threadedly connected to the support, and the adjusting bolts are connected to the adjusting columns through a connecting bearing.

[0005] By adopting the above technical solution, the fault diagnosis technology in the prior art can be used to detect the planetary gear reduction device, such as the detection of abrasive particles in the oil, the detection of vibration signals, etc. When gear wear is detected, and it may be the wear of the sun gear, the staff can rotate the adjusting bolt to adjust the position of the adjusting column against the end face of the slide seat, so as to adjust the position of the slide seat, the input bearing and the input shaft, so that the sun gear moves along its axial direction, so that the worn position on the sun gear is separated from the planetary gear, and the unworn position on the sun gear moves to the position meshing with the planetary gear. Run the planetary reduction device again, and when it is detected that the gear wear signal has returned to normal, the planetary reduction device can continue to be used normally. If the gear wear signal still exists, it is judged that it may be the wear of the planetary gear, and the planetary reduction device can be disassembled at this time.

[0006] The present invention can reduce the number of times the planetary gear reduction device is disassembled and assembled, and effectively reduces the workload of the staff.

[0007] The present invention is further configured as follows: the adjusting column is provided with a mounting notch, the outer ring of the connecting bearing is mounted and fixed in the mounting notch, and the inner ring of the connecting bearing is fixed on the adjusting bolt.

[0008] By adopting the above technical solution, the adjusting screw can be rotated to drive the adjusting shaft to move axially.

[0009] The present invention is further configured as follows: one end of the adjusting column is located in the box body and abuts against the end surface of the sliding seat, and the other end is provided with the mounting notch.

[0010] The present invention is further configured as follows: the connecting bearing is an angular contact ball bearing.

[0011] The present invention is further configured as follows: it also includes a circulating oil circuit system, the circulating oil circuit system includes an oil inlet pipe, a filtering device, a heat dissipation pipe, an oil pump installed in the heat dissipation pipe, a radiator installed in the heat dissipation pipe, and an oil return pipe, the filtering device includes a filter, a plurality of filtering channels are formed in the filter, a filter screen is installed in the filtering channel, the oil inlet pipe is provided with a plurality of first branch pipes, the first branch pipes are respectively connected to the middle side walls of the filtering channels, a first valve is installed on the first branch pipe, a slag collecting barrel is connected to the lower end of the filtering channel, a second branch pipe is connected to the upper end of the filtering channel, the second branch pipe is connected to the heat dissipation pipe, and a second valve is installed on the second branch pipe.

[0012] By adopting the above technical solution, the lubricating oil in the box enters the circulating oil circuit system, is filtered, and sent back to the box after heat dissipation and cooling. The residue in the lubricating oil is filtered by the filter, and when the circulating oil circuit system stops running, the first valve and the second valve are closed, and the residue falls into the residue collecting barrel below under the action of its own weight.

[0013] The present invention is further configured as follows: the radiator includes a heat exchanger, a liquid cooling pipe connected to the heat exchanger, and a circulating pump installed on the liquid cooling pipe. The liquid cooling pipe is made of a through pipe, and a thermal fan is installed on the liquid cooling pipe. When the thermal fan is in operation, an airflow is formed to flow through the heat exchanger.

[0014] By adopting the above technical solution, the lubricating oil with a high temperature in the circulating oil system undergoes heat exchange with the refrigerant in the liquid cooling pipe in the heat exchanger, and the temperature is reduced and sent back to the box again. The refrigerant in the liquid cooling pipe increases in temperature after the heat exchange, and the thermal fan operates under the heat of the refrigerant after the temperature rises, and the heat exchanger is cooled by air, and the heat of the refrigerant after the temperature rises is reused. No additional energy is required to drive the thermal fan to operate, and liquid cooling and air cooling are combined. Thermal fans are also called thermal energy fans and thermal power fans.

[0015] The present invention is further configured to include a ring gear, wherein the planetary gears are meshed with the ring gear.

[0016] The present invention is further configured as follows: the input bearing is a deep groove ball bearing, and the outer ring of the input bearing is mounted and fixed on the slide seat.

[0017] The present invention is further configured as follows: the input shaft is divided into a first shaft and a second shaft, a first half shaft is formed at the end of the first shaft, a second half shaft is formed at the end of the second shaft, and the first half shaft and the second half shaft are connected and fixed by a plurality of transmission bolts and transmission nuts.

[0018] By adopting the above technical solution, the sun gear is installed and fixed on the second shaft, the first shaft is installed on the power source, the transmission bolts and transmission nuts are loosened and removed, and the position of the sun gear can be adjusted by moving the position of the second shaft. The connection between the first shaft and the power source does not need to be adjusted. After the position of the sun gear is adjusted, the transmission bolts and transmission nuts are used to connect and fix the first shaft and the second shaft again.

[0019] The present invention is further configured as follows: the adjusting column is provided with a scale mark.

[0020] The beneficial effect of the present invention is that when the sun gear is worn or damaged, the housing of the planetary reduction device does not need to be disassembled. By adjusting the position of the second shaft of the input shaft and the sun gear, the planetary reduction device can continue to serve, thereby extending the service life of the sun gear and ensuring the stable operation of the planetary reduction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the positional relationship between the input shaft and the housing of the present invention.

[0024] Figure 3 It is a schematic diagram of the positional relationship among the input shaft, sun gear, planetary gears and ring gear of the present invention.

[0025] Figure 4 It is a schematic diagram of the positional relationship between the ring gear, the planet carrier and the output shaft of the present invention.

[0026] Figure 5It is a schematic diagram of the positional relationship between the box body, the support and the adjusting screw of the present invention.

[0027] Figure 6 It is a schematic diagram of the connection relationship between the slide seat, input bearing and housing of the present invention.

[0028] Figure 7 It is a schematic diagram of the connection relationship between the adjusting bolt and the adjusting column of the present invention.

[0029] Figure 8 yes Figure 1 Enlarged view of point A.

[0030] In the figure, 1, housing; 11, slide; 12, slide seat; 13, input bearing; 14, support; 2, input shaft; 21, first shaft; 22, second shaft; 23, first semi-shaft; 24, second semi-shaft; 25, transmission bolt; 3, sun gear; 4, planetary gear; 41, planetary carrier; 42, output shaft; 5, ring gear; 6, adjusting column; 7, adjusting bolt; 71, connecting bearing; 8, circulating oil system; 81, oil inlet pipe; 811, first branch pipe; 812, first valve; 82, filtering device; 821, filtering channel; 822, filter screen; 823, slag collecting barrel; 824, second branch pipe; 825, second valve; 83, heat pipe; 84, oil pump; 85, radiator; 851, heat exchanger; 852, liquid cooling pipe; 853, thermal fan; 86, oil return pipe. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] A planetary reduction gear, such as Figures 1 to 8 As shown, it includes a housing 1, an input shaft 2, a sun gear 3 mounted on the input shaft 2, three planetary gears 4, a ring gear 5, a planet carrier 41 connected to the three planetary gears 4, and an output shaft 42 fixed to the planet carrier 41. The tooth width of the sun gear 3 is greater than or equal to twice the tooth width of the planetary gear 4. The ring gear 5 is fixed in the housing 1, and the planetary gear 4 is meshed with the sun gear 3, and the planetary gear 4 is meshed with the ring gear 5 at the same time.

[0033] Two slide grooves 11 are arranged in the housing 1, and a slide seat 12 is embedded in each of the slide grooves 11. The slide seat 12 is installed with an input bearing 13, which is a deep groove ball bearing. The inner ring of the input bearing 13 is fixed on the input shaft 2, and the outer ring of the input bearing 13 is fixed on the slide seat 12. The housing 1 is provided with a plurality of adjustment columns 6, and the adjustment columns 6 and the housing 1 are reciprocatingly sealed. The plurality of adjustment columns 6 are respectively against the end faces of the slide seat 12. The outer wall of the housing 1 is provided with a support 14, and the support 14 is threadedly connected with a plurality of adjustment bolts 7, and the adjustment bolts 7 are connected to the adjustment columns 6 through a connecting bearing 71. One end of the adjustment column 6 is located in the housing 1 and against the end face of the slide seat 12, and the other end is provided with the installation notch. The outer ring of the connecting bearing 71 is fixed in the installation notch, and the inner ring of the connecting bearing 71 is fixed on the adjustment bolt 7. The connecting bearing 71 is an angular contact ball bearing. The adjusting column 6 is provided with scale markings.

[0034] The input shaft 2 is divided into a first shaft 21 and a second shaft 22. A first half shaft 23 is formed at the end of the first shaft 21, and a second half shaft 24 is formed at the end of the second shaft 22. The first half shaft 23 and the second half shaft 24 are connected and fixed by a plurality of transmission bolts 25 and transmission nuts. The first shaft 21 is used to connect the power source, and the sun gear 3 and the inner ring of the input bearing 13 are both mounted and fixed on the second shaft 22.

[0035] The planetary reduction device also includes a circulating oil circuit system 8, which includes an oil inlet pipe 81, a filtering device 82, a heat dissipation pipe 83, an oil pump 84 installed in the heat dissipation pipe 83, a radiator 85 installed in the heat dissipation pipe 83, and an oil return pipe 86. The filtering device 82 includes a filter, and a plurality of filtering channels 821 are formed in the filter. A filter screen 822 is installed in the filtering channel 821. The oil inlet pipe 81 is provided with a plurality of first branch pipes 811, and the first branch pipes 811 are respectively connected to the middle side walls of the filtering channels 821. A first valve 812 is installed on the first branch pipe 811. The lower end of the filtering channel 821 is connected to a slag collecting barrel 823. The upper end of the filtering channel 821 is connected to a second branch pipe 824, and the second branch pipe 824 is connected to the heat dissipation pipe 83. The second branch pipe 824 is installed with a second valve 825. The radiator 85 includes a heat exchanger 851, a liquid cooling pipe 852 connected to the heat exchanger 851, and a circulation pump installed in the liquid cooling pipe 852. The liquid cooling pipe 852 is made of a through pipe. A thermal fan 853 is installed on the liquid cooling pipe. When the thermal fan 853 is in operation, an airflow is formed to flow through the heat exchanger 851.

[0036] Working principle: The planetary gear reduction device can be tested by using the fault diagnosis technology in the prior art, such as the detection of abrasive particles in the oil, the detection of vibration signals, etc. When gear wear is detected, and it may be the wear of the sun gear 3, the staff can rotate the adjusting bolt 7 to adjust the position of the adjusting column 6 against the end face of the slide 12, so as to adjust the position of the slide 12, the input bearing 13 and the input shaft 2, so that the sun gear 3 moves along its axial direction, so that the worn position on the sun gear 3 is separated from the planetary gear 4, and the unworn position on the sun gear 3 moves to the position meshing with the planetary gear 4. Run the planetary reduction device again, and when it is detected that the gear wear signal has returned to normal, the planetary reduction device can continue to be used normally. If the gear wear signal still exists, it is judged that the planetary gear 4 may be worn, and the planetary reduction device can be disassembled at this time.

Claims

1. A planetary reduction gear, comprising a housing (1), an input shaft (2), a sun gear (3) mounted on the input shaft (2), and a plurality of planetary gears (4), characterized in that: The tooth width of the sun gear (3) is greater than or equal to twice the tooth width of the planetary gear (4). Two slide grooves (11) are arranged in the housing (1). A slide seat (12) is embedded in each of the slide grooves (11). An input bearing (13) is installed on the slide seat (12). The inner ring of the input bearing (13) is fixedly installed on the input shaft (2). A plurality of adjustment columns (6) are arranged on the housing (1). The adjustment columns (6) and the housing (1) are sealed in a reciprocating manner. The plurality of adjustment columns (6) are respectively pressed against the end faces of both ends of the slide seat (12). A support (14) is arranged on the outer wall of the housing (1). The support (14) is threadedly connected with a plurality of adjustment bolts (7). The adjustment bolts (7) are connected to the adjustment columns (6) through a connecting bearing (71).

2. A planetary reduction gear according to claim 1, characterized in that: The adjusting column (6) is provided with a mounting notch, the outer ring of the connecting bearing (71) is mounted and fixed in the mounting notch, and the inner ring of the connecting bearing (71) is fixed on the adjusting bolt (7).

3. A planetary reduction gear according to claim 1, characterized in that: One end of the adjusting column (6) is located in the box body (1) and abuts against the end surface of the sliding seat (12), and the other end is provided with the installation notch.

4. A planetary reduction gear according to claim 2, characterized in that: The connecting bearing (71) is an angular contact ball bearing.

5. A planetary reduction gear according to claim 1, characterized in that: The invention also comprises a circulating oil circuit system (8), wherein the circulating oil circuit system (8) comprises an oil inlet pipe (81), a filtering device (82), a heat dissipation pipe (83), an oil pump (84) installed on the heat dissipation pipe (83), a radiator (85) installed on the heat dissipation pipe (83), and an oil return pipe (86); the filtering device (82) comprises a filter, wherein a plurality of filtering channels (821) are formed in the filter, and a filter screen (822) is installed in the filtering channel (821); the oil inlet pipe (81) is provided with A plurality of first branch pipes (811), wherein the first branch pipes (811) are respectively connected to the middle side walls of the filtering channel (821), a first valve (812) is installed on the first branch pipe (811), the lower end of the filtering channel (821) is connected to a slag collecting cylinder (823), the upper end of the filtering channel (821) is connected to a second branch pipe (824), the second branch pipe (824) is connected to the heat dissipation pipe (83), and a second valve (825) is installed on the second branch pipe (824).

6. A planetary reduction gear according to claim 5, characterized in that: The radiator (85) comprises a heat exchanger (851), a liquid cooling pipe (852) connected to the heat exchanger (851), and a circulation pump installed on the liquid cooling pipe (852); the liquid cooling pipe (852) is made of a through pipe; a thermal fan (853) is installed on the liquid cooling pipe; when the thermal fan (853) is in operation, an air flow is formed to flow through the heat exchanger (851).

7. A planetary reduction gear according to claim 1, characterized in that: It also comprises a ring gear (5), and the planetary gear (4) is meshed with the ring gear (5).

8. A planetary reduction gear according to claim 1, characterized in that: The input bearing (13) is a deep groove ball bearing, and the outer ring of the input bearing (13) is fixedly mounted on the slide seat (12).

9. A planetary reduction gear according to claim 1, characterized in that: The input shaft (2) is divided into a first shaft (21) and a second shaft (22); a first half shaft (23) is formed at the end of the first shaft (21); a second half shaft (24) is formed at the end of the second shaft (22); the first half shaft (23) and the second half shaft (24) are connected and fixed by a plurality of transmission bolts (25) and transmission nuts.

10. A planetary reduction gear according to claim 1, characterized in that: The adjusting column (6) is provided with scale markings.

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