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CN-224201104-U - Two-stage planetary gear box device for fault diagnosis experiment

CN224201104UCN 224201104 UCN224201104 UCN 224201104UCN-224201104-U

Abstract

The utility model relates to the technical field of mechanical transmission equipment, in particular to a secondary planetary gear box device for fault diagnosis experiments. The technical scheme includes that the split type planetary gear train comprises a first-stage planetary gear train module, a second-stage planetary gear train module and a split type box body, wherein the first-stage module consists of an input shaft, a first-stage sun gear, three first-stage planetary gears uniformly distributed at 120 degrees and a split planetary frame, the input shaft is connected with the sun gear through flat keys, a first-stage annular gear is fixed with a gasket through annular gear pins, the second-stage module is coupled with the first-stage planetary frame through a connecting shaft, the second-stage sun gear is connected with an output shaft through flat keys, the second-stage planetary frame is also in a shaft body separation structure in threaded connection, the split type box body is fixed by upper box body bolts and lower box body bolts, a supporting block is arranged in the split type box body to stabilize the annular gear, and input and output shaft end covers are packaged rapidly through screws. The device realizes the quick replacement of gears through the design of the modularized planet carrier and the split type quick-dismantling box body, is suitable for the comparison test of the transmission performance of multiple working stations in a laboratory, and obviously improves the experimental efficiency.

Inventors

  • QU JINXIU
  • KE FEI
  • QIN MINZHI
  • YUN JIE
  • WU JIAYAN

Assignees

  • 西安工业大学

Dates

Publication Date
20260505
Application Date
20250630

Claims (8)

  1. 1. The secondary planetary gear box device for the fault diagnosis experiment comprises a split type box body (3), a primary planetary gear train module (1) and a secondary planetary gear train module (2) which are arranged in the split type box body (3), wherein the primary planetary gear train module (1) and the secondary planetary gear train module (2) are connected through a connecting shaft (21), The primary planetary gear train module (1) adopts a central input type structure and consists of an input shaft (4), a primary sun gear (8) and a planetary gear transmission assembly, wherein the input shaft (4) is circumferentially connected with the primary sun gear (8) through a flat key, the planetary gear transmission assembly comprises three primary planetary gears (10), a primary planet carrier (13) and a primary annular gear (12) which are distributed at equal angles along the circumference by 120 DEG, the three primary planetary gears (10) are rotatably arranged on the primary planet carrier (13) through planetary gear shafts, and the axial positioning of the primary planetary gears (10) is realized by using meshed gear ring gaskets (11) which are fixed on the left and right of the primary annular gear (12) through bolts; The secondary planetary gear train module (2) consists of a secondary sun gear (20), an output shaft (24), a connecting shaft (21), three secondary planetary gears (16) which are distributed at equal angles along the circumference by 120 degrees, a secondary planet carrier (18) and a secondary annular gear (15), wherein the connecting shaft (21) is connected with the primary planet carrier (13) and the secondary sun gear (20) through a flat key to realize power transmission; The split type box body (3) comprises an upper box body (19) and a lower box body (26), wherein the upper box body (19) is connected with the lower box body (26) through bolts, and a first support (28) and a second support (27) are arranged in the lower box body (26) and are used for supporting the primary annular gear (12) and the secondary annular gear (15).
  2. 2. The two-stage planetary gear box device for fault diagnosis experiments according to claim 1, wherein one end of the input shaft (4) is radially positioned with the split box body (3) through a first rolling bearing (6).
  3. 3. A two-stage planetary gear box device for fault diagnosis experiments according to claim 1 or 2, characterized in that the output shaft (24) is supported and positioned by a rolling bearing two (22), and the axial installation size of the output shaft (24) is controlled by a sleeve two (25).
  4. 4. A two-stage planetary gear box device for fault diagnosis experiments according to claim 3, wherein the two sides of the split box body (3) are respectively provided with an input shaft end cover (5) and an output shaft end cover (23), and the split box body is respectively sleeved on the input shaft (4) and the output shaft (24) and is fixed on the upper part box body (19) and the lower part box body (26) by screws.
  5. 5. The secondary planetary gear box device for fault diagnosis experiments according to claim 4, wherein the secondary annular gear (15) is fixed on the split box body (3) through a secondary annular gear pin (30).
  6. 6. A two-stage planetary gearbox arrangement for fault diagnosis experiments according to claim 5, characterized in that the input shaft (4) is limited by a sleeve one (7).
  7. 7. The two-stage planetary gear box device for fault diagnosis experiment according to claim 6, wherein the primary planet carrier (13) and the secondary planet carrier (18) are divided into three planet carrier shafts and planet carrier bodies, and the planet carrier shafts and the planet carrier bodies are connected by screws.
  8. 8. The two-stage planetary gear box device for fault diagnosis experiment according to claim 7, wherein the input shaft (4), the connecting shaft (21), the primary planet carrier (13) and the secondary planet carrier (18) are provided with circlip positioning gears for the shafts.

Description

Two-stage planetary gear box device for fault diagnosis experiment Technical Field The utility model relates to the technical field of mechanical transmission equipment, in particular to a secondary planetary gear box device for fault diagnosis experiments. Background The rapid development of science and technology and modern industry brings about the vigorous development of the manufacturing industry of mechanical equipment, various mechanical equipment in the national defense and national economy industries are developing towards large-scale, high-speed, heavy-load, high-power, intelligent and the like, and higher requirements are also put forward on the performance of a planetary gear transmission system. The planetary gear transmission system inevitably generates performance decline and failure in the operation process due to the reasons of complex structure, high bearing load, high power density, severe working condition environment, internal and external excitation and the like, thereby affecting the operation safety of the whole mechanical equipment. Therefore, the requirements for health monitoring and fault intelligent diagnosis of the running state of the planetary gear transmission system are increasingly urgent, and the method has important academic significance and engineering application value for meeting the urgent requirements of engineering practice, improving the service performance of the planetary gear transmission system and guaranteeing the safe running of mechanical equipment. For health monitoring and fault intelligent diagnosis of the running state of the planetary gear box, firstly, one planetary gear box is needed, however, the existing gear box is inconvenient to detach, gears in the gear box are inconvenient to replace, the box body is inconvenient to arrange sensors, and the experimental efficiency is low. If the patent number is 202420064953.3, the patent name is 'novel planetary gear box', it includes oblique ring gear and straight ring gear, the straight ring gear of oblique ring gear fixed connection, be provided with one-level transmission in the interior of oblique ring gear, be provided with two sets of connecting holes in the interior of oblique ring gear, one-level transmission includes oblique sun tooth and oblique planet tooth, be provided with the secondary drive in the interior of straight ring gear, straight ring gear is provided with tertiary transmission in the inside, through setting up of oblique ring gear, can make whole device cancel motor connecting plate, make whole device directly make the integral type with motor connecting plate, make the cost lower, simultaneously through setting up of oblique inner ruler ring, can make one-level transmission change from straight gear to helical gear transmission, make whole device operation noise lower, straight ring gear and output lid make the integral type, cancel the output lid, make whole device cost lower, simultaneously straight ring gear and oblique ring gear be laser welding or glue connection mode, its has the problem that the dismantlement is inconvenient, the gear is difficult to change. The laser welding or glue connection has weak impact resistance. The heat generation of the multi-stage transmission is concentrated. Disclosure of Invention In view of the above, in order to solve the problems of inconvenient disassembly and inconvenient gear replacement, inconvenient sensor arrangement of a box body and low experimental efficiency in the prior art, the two-stage planetary gear box device for fault diagnosis experiments is provided. In order to achieve the aim of the utility model, the technical scheme of the utility model is that the secondary planetary gear box device for fault diagnosis experiments comprises a split type box body, a primary planetary gear train module and a secondary planetary gear train module which are arranged in the split type box body, wherein the primary planetary gear train module and the secondary planetary gear train module are connected through a connecting shaft, The primary planetary gear train module adopts a central input type structure and consists of an input shaft, a primary sun gear and a planetary gear transmission assembly; the planetary gear transmission assembly comprises three first-stage planetary gears, a first-stage planetary carrier and a first-stage annular gear, wherein the first-stage planetary gears, the first-stage planetary carrier and the first-stage annular gear are equiangularly distributed along the circumference by 120 degrees; The secondary planetary gear train module consists of a secondary sun gear, an output shaft, a connecting shaft, three secondary planetary gears, a secondary planet carrier and a secondary annular gear, wherein the three secondary planetary gears, the secondary planet carrier and the secondary annular gear are distributed at equal angles along the circumference of 120 degrees, the connecting shaft is connected with the prima