Gear box of planetary withdrawal and straightening machine

Abstract

The invention relates to the technical field of gear boxes, in particular to a gear box of a planetary withdrawal and straightening machine. The gear box comprises a machine shell, a main input mechanism, an auxiliary input mechanism and an output mechanism, the main input mechanism comprises a main input shaft and a bevel gear transmission assembly. The main input shaft is in transmission connection with the output mechanism through the bevel gear transmission assembly. The auxiliary input mechanism is in transmission connection with the output mechanism and used for being matched with the main input mechanism so as to adjust the torque of the output mechanism. In the operation process of the gearbox, when the torque output by the output mechanism cannot meet the requirement, the auxiliary transmission-in mechanism intervenes, the auxiliary transmission-in mechanism can transmit part of the torque to the output mechanism, the main input mechanism and the auxiliary transmission-in mechanism are matched, and adjustment of the torque output by the output mechanism is achieved; the auxiliary conveying-in mechanism is small in load during working, flexible and convenient to adjust and convenient to control.

Description

Technical Field

[0001] The invention relates to the technical field of gear boxes, in particular to a gear box for a planetary straightening machine. Background Art

[0002] The straightening machine is an important equipment in the steel production line, which is used for straightening and straightening the ingot. The gearbox of the straightening machine is the core structure of the straightening machine. With the advancement of science and technology and the update of materials, the demand for gearbox performance is getting higher and higher. The traditional cylindrical gear transmission mechanism cannot take into account the high speed ratio and high torque requirements of its use, and the overall structure is complex and large in size. Some technical solutions in the prior art improve the transmission method of cylindrical gears and adopt bevel gear set input. Although it can meet the speed ratio requirements, its output torque is relatively small and cannot meet the increasingly high continuous casting requirements, and its use is limited. Summary of the invention

[0003] The purpose of the present application is to provide a planetary straightening machine gearbox to solve the technical problems existing in the prior art such as complex overall structure, large volume, large occupied space and low torque.

[0004] In a first aspect, the present invention provides a planetary straightening machine gearbox, comprising:

[0005] A casing and a main input mechanism, an auxiliary input mechanism and an output mechanism all mounted on the casing; the main input mechanism comprises a main input shaft and a bevel gear transmission assembly, the main input shaft is transmission-connected to the output mechanism via the bevel gear transmission assembly; the auxiliary input mechanism is transmission-connected to the output mechanism, the auxiliary input mechanism is used to cooperate with the main input mechanism to adjust the torque of the output mechanism.

[0006] In an optional embodiment, the output mechanism includes a primary planetary transmission assembly and a secondary planetary transmission assembly, the output portion of the primary planetary transmission assembly is transmission-connected to the input portion of the secondary planetary transmission assembly, the main input shaft is connected to the input portion of the primary planetary transmission assembly via the bevel gear transmission assembly, and the auxiliary transmission input mechanism is transmission-connected to the primary planetary transmission assembly.

[0007] In an optional embodiment, the first-stage planetary transmission assembly includes a transmission shaft, a first bearing, a first-stage sun gear, a first-stage planetary gear, a first-stage inner gear ring and a first-stage planet carrier; the transmission shaft is rotatably matched with the casing through the first bearing; the main input shaft is arranged perpendicular to the transmission shaft, and the main input shaft is connected to the transmission shaft through the bevel gear transmission assembly; the transmission shaft is fixedly connected to the first-stage sun gear, the first-stage planetary gear is rotatably mounted on the first-stage planet carrier, the first-stage inner gear ring is rotatably mounted on the casing, and the first-stage planetary gear is meshed with the first-stage sun gear and the first-stage inner gear ring at the same time; the first-stage planet carrier is connected to the input part of the second-stage planetary transmission assembly;

[0008] The auxiliary transmission input mechanism is drivingly connected to the primary internal gear ring.

[0009] In an optional embodiment, the casing has a first inner wall and a second inner wall arranged at intervals in the axial direction of the transmission shaft, and a retaining ring is provided on the first inner wall and the second inner wall. The first planetary carrier is clamped between the two retaining rings to limit the axial movement of the first planetary carrier in the transmission shaft.

[0010] In an optional embodiment, the auxiliary transmission input mechanism includes an auxiliary transmission input shaft, an auxiliary transmission sun gear, an auxiliary transmission planetary gear, an auxiliary transmission planetary carrier, an auxiliary transmission inner ring gear, a first auxiliary transmission gear and a second auxiliary transmission gear; the auxiliary transmission input shaft is rotatably matched with the casing, and the axis of the auxiliary transmission input shaft is parallel to the axis of the transmission shaft; the auxiliary transmission sun gear is fixedly connected to the auxiliary transmission input shaft, the auxiliary transmission planetary gear is rotatably mounted on the auxiliary transmission planetary carrier, the auxiliary transmission inner ring gear is fixed in the casing, and the auxiliary transmission planetary gear is meshed with the auxiliary transmission sun gear and the auxiliary transmission inner ring gear at the same time; the first auxiliary transmission gear is fixed to the auxiliary transmission planetary carrier and the two are coaxially arranged, and the second auxiliary transmission gear is fixed to the primary inner ring gear and the two are coaxially arranged; the first auxiliary transmission gear is meshed with the second auxiliary transmission gear.

[0011] In an optional embodiment, a first pin groove is provided on the second auxiliary transmission gear, and a second pin groove is provided on the primary inner gear ring. The first pin groove and the second pin groove are butted against each other and cooperate with each other to assemble a positioning pin, and the positioning pin is used to limit the relative rotation of the second auxiliary transmission gear and the primary inner gear ring.

[0012] In an optional embodiment, the axis of the main input shaft and the axis of the transmission shaft cooperate to define a first plane; the axis of the auxiliary transmission input shaft and the axis of the transmission shaft cooperate to define a second plane, and the angle between the first plane and the second plane is set between 19.5°-20.5°.

[0013] In an optional embodiment, the secondary planetary transmission assembly includes a secondary sun gear, a secondary planetary gear, an output planetary carrier and a secondary inner ring gear, the secondary sun gear is fixedly connected to the primary planetary carrier, the secondary planetary gear is rotatably mounted on the output planetary carrier, the output planetary carrier is rotatably mounted on the casing, the secondary inner ring gear is fixedly connected to the casing, and the secondary planetary gear is meshed with the secondary sun gear and the secondary inner ring gear at the same time.

[0014] In an optional embodiment, the outer peripheral surface of the secondary sun gear is equipped with two limit rings arranged in its axial direction, the primary planet carrier is sleeved on the outside of the secondary sun gear, and the part of the primary planet carrier sleeved on the outside of the secondary sun gear is located between the two limit rings.

[0015] In an optional embodiment, the planetary straightening machine gearbox further includes a plurality of vibration sensors, which are all mounted on the housing and are used to obtain vibration parameters of bearings at corresponding positions.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In summary, the planetary straightening machine gearbox provided in this embodiment includes a housing and a main input mechanism, an auxiliary input mechanism and an output mechanism all mounted on the housing. The main input mechanism includes a main input shaft and a bevel gear transmission assembly, and the main input shaft is connected to the output mechanism through the bevel gear transmission assembly; the auxiliary input mechanism is connected to the output mechanism through the bevel gear transmission assembly, and the auxiliary input mechanism is used to cooperate with the main input mechanism to adjust the torque of the output mechanism. In this way, the main input shaft and the output mechanism are connected through the bevel gear transmission assembly, and the bevel gear transmission assembly has a compact structure, so that after the main input shaft and the output mechanism cooperate, the overall structure is compact and the volume is small. At the same time, an auxiliary input mechanism that cooperates with the output mechanism is set on the housing. When the output torque of the output mechanism needs to be fine-tuned, due to the large load of the main input mechanism, the regulation is inconvenient, and the adjustment accuracy is not high. Therefore, through the intervention of the auxiliary input mechanism, the torque of the output mechanism is adjusted without affecting the main input mechanism, and the adjustment is convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a planetary straightening machine gearbox provided in an embodiment of the present invention;

[0020] Figure 2 A schematic cross-sectional view of a gearbox of a planetary straightening machine provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0024] Figure 6 A schematic diagram of the lateral structure of a planetary straightening machine gearbox provided in an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the structure of the cooperation between the second auxiliary transmission gear and the primary internal gear ring provided in an embodiment of the present invention.

[0026] Reference numerals:

[0027] 001- housing; 011- retaining ring; 002- first plane; 003- second plane; 100- main input mechanism; 110- main input shaft; 120- first bevel gear; 130- second bevel gear; 140- support bearing; 200- auxiliary transmission input mechanism; 210- auxiliary transmission input shaft; 220- auxiliary transmission sun gear; 230- auxiliary transmission planetary gear; 240- auxiliary transmission planetary carrier; 250- auxiliary transmission inner gear ring; 260- first auxiliary transmission gear; 270- second auxiliary transmission gear; 280- third bearing; 290- fourth bearing; 300- output mechanism; 310- first-stage planetary Transmission assembly; 311-transmission shaft; 312-first bearing; 313-first-stage sun gear; 314-first-stage inner gear ring; 315-first-stage planet carrier; 316-first limit block; 317-second limit block; 318-first-stage planet gear; 320-second-stage planetary transmission assembly; 321-second-stage sun gear; 322-second-stage planet gear; 323-output planet carrier; 324-second bearing; 325-limiting retaining ring; 326-third limit block; 327-fourth limit block; 328-fifth limit block; 329-sixth limit block; 340-second-stage inner gear ring; 400-locating pin. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Refer to the following Figures 1 to 7 A planetary straightening machine gearbox according to some embodiments of the present invention is described.

[0034] Please combine Figure 1 to Figure 2 The embodiment of the present application provides a planetary straightening machine gearbox, which includes a housing 001 and a main input mechanism 100, an auxiliary transmission input mechanism 200 and an output mechanism 300 all mounted on the housing 001; the main input mechanism 100 includes a main input shaft 110 and a bevel gear transmission assembly, and the main input shaft 110 is transmission-connected to the output mechanism 300 through the bevel gear transmission assembly; the auxiliary transmission input mechanism 200 is transmission-connected to the output mechanism 300, and the auxiliary transmission input mechanism 200 is used to cooperate with the main input mechanism 100 to adjust the torque of the output mechanism 300.

[0035] Based on the above, the working mode of the planetary straightening machine gearbox provided in this embodiment is as follows:

[0036] The main input motor is connected to the main input shaft 110, and the auxiliary input motor is connected to the auxiliary input mechanism 200. Under normal circumstances, the main input motor drives the main input shaft 110 to rotate after starting, and the main input shaft 110 transmits the torque to the output mechanism 300 through the bevel gear transmission assembly, and the output mechanism 300 outputs the torque after the speed ratio is adjusted. During the operation of the gearbox, when the torque output from the output mechanism 300 cannot meet the demand, at this time, the auxiliary input mechanism 200 intervenes, and the auxiliary input mechanism 200 can transmit part of the torque to the output mechanism 300. The main input mechanism 100 and the auxiliary input mechanism 200 cooperate to adjust the torque output by the output mechanism 300, and the auxiliary input mechanism 200 has a small load when working, and the adjustment is flexible and convenient, which is easy to operate.

[0037] The details of the planetary straightening machine gearbox according to the embodiment of the present application are described below by way of examples.

[0038] Please combine Figure 1-Figure 2 In this embodiment, optionally, the planetary straightening machine gearbox includes a housing 001 and a main input mechanism 100, an auxiliary transmission input mechanism 200, an output mechanism 300 and a vibration sensor all mounted on the housing 001. The main input mechanism 100 and the auxiliary transmission input mechanism 200 are both transmission-connected to the output mechanism 300, and the auxiliary transmission input mechanism 200 is used to cooperate with the main input mechanism 100 to adjust the torque of the output mechanism 300. There are multiple vibration sensors distributed at corresponding positions of the housing 001, which can monitor the vibration parameters of the bearings at the corresponding positions, thereby obtaining the working status of the bearings.

[0039] It should be noted that during the operation of the gearbox, the main input mechanism 100 mainly inputs power to the output mechanism 300, and the auxiliary input mechanism 200 intervenes when the output torque of the output mechanism 300 needs to be adjusted, and cooperates with the main input mechanism 100 to adjust the torque of the output mechanism 300.

[0040] Please combine Figure 2 In this embodiment, optionally, the main input mechanism 100 includes a main input shaft 110, a bevel gear transmission assembly and a support bearing 140. The main input shaft 110 is rotatably matched with the housing 001 through two support bearings 140, and the main input shaft 110 is transmission-connected with the output mechanism 300 through the bevel gear transmission assembly. Among them, the bevel gear transmission assembly includes a first bevel gear 120 and a second bevel gear 130, and the first bevel gear 120 is sleeved outside the main input shaft 110 and the two are fixedly connected. The second bevel gear 130 cooperates with the output mechanism 300. The first bevel gear 120 and the second bevel gear 130 are meshed to achieve torque transmission.

[0041] The first bevel gear 120 and the second bevel gear 130 cooperate to achieve torque transmission, thereby improving the compactness of the structure and reducing the overall volume.

[0042] In this embodiment, the output mechanism 300 optionally includes a primary planetary transmission assembly 310 and a secondary planetary transmission assembly 320, the output portion of the primary planetary transmission assembly 310 is in driving connection with the input portion of the secondary planetary transmission assembly 320, the main input shaft 110 is connected to the input portion of the primary planetary transmission assembly 310 through a bevel gear transmission assembly, and the auxiliary transmission input mechanism 200 is in driving connection with the primary planetary transmission assembly 310. Through the cooperation of the two-stage planetary transmission assembly, a larger speed ratio can be adjusted to meet the use requirements of various occasions and have a wide range of uses.

[0043] Specifically, for example, the primary planetary transmission assembly 310 includes a transmission shaft 311, a first bearing 312, a primary sun gear 313, a primary planetary gear 318, a primary inner gear ring 314 and a primary planetary carrier 315. The transmission shaft 311 is rotatably matched with the housing 001 through two first bearings 312, and the models of the two first bearings 312 can be set to be the same or different, which can be selected as needed. The second bevel gear 130 is installed on the transmission shaft 311, the main input shaft 110 is arranged vertically with the transmission shaft 311, and the main input shaft 110 transmits torque to the transmission shaft 311 through the first bevel gear 120 and the second bevel gear 130. The transmission shaft 311 is fixedly connected to the primary sun gear 313, and the two can achieve torque transmission through a spline structure. The primary planetary gear 318 is rotatably mounted on the primary planetary carrier 315, and the primary inner gear ring 314 is rotatably mounted on the housing 001. The primary planetary gear 318 is meshed with the primary sun gear 313 and the primary inner gear ring 314 at the same time. The primary planetary carrier 315 is connected to the input part of the secondary planetary transmission assembly 320. The number of the primary planetary gears 318 can be multiple, which is not specifically limited in this embodiment. The auxiliary transmission input mechanism 200 is transmission-connected to the primary inner gear ring 314.

[0044] During operation, the main input shaft 110 rotates, and the torque is transmitted to the transmission shaft 311 through the first bevel gear 120 and the second bevel gear 130. The transmission shaft 311 drives the first-stage sun gear 313 to rotate, and the first-stage sun gear 313 drives the first-stage planetary gear 318 to rotate. The first-stage planetary gear 318 rotates while revolving, driving the first-stage planet carrier 315 and the first-stage inner ring 314 to rotate, and the torque is transmitted to the second-stage planetary transmission assembly 320 through the first-stage planet carrier 315.

[0045] Please combine Figure 2 and Figure 3, further, a slot is provided at one end of the transmission shaft 311, and a first limit block 316 is installed on the bottom wall of the slot, and the first limit block 316 has a first limit surface facing the slot. The axle of the primary sun gear 313 is inserted into the slot, and the end face of the primary sun gear 313 inserted into the slot is installed with a second limit block 317, and the second limit block 317 has a second limit surface facing the transmission shaft 311, and one of the first limit surface and the second limit surface is set as an arc surface, and the other is set as a plane, and the first limit surface and the second limit surface are in contact. In this design, the first limit surface and the second limit surface cooperate to limit the axial position of the transmission shaft 311 and the primary sun gear 313, and because the first limit surface and the second limit surface are point contact, the contact area is small, the friction is small, and they can rotate relatively, so as to adapt to the vibration during the operation of the gearbox. That is, under the vibration condition, the reliability of the axial position of the primary sun gear 313 and the transmission shaft 311 can also be guaranteed.

[0046] In this embodiment, optionally, the housing 001 has a first inner wall and a second inner wall arranged at intervals in the axial direction of the transmission shaft 311, and a retaining ring 011 is provided on the first inner wall and the second inner wall. The first-stage planetary carrier 315 is clamped between the two retaining rings 011 to limit the axial movement of the first-stage planetary carrier 315 in the transmission shaft 311, thereby improving the stability of the first-stage planetary carrier 315 during operation, and the entire gearbox operates stably and reliably.

[0047] Optionally, the secondary planetary transmission assembly 320 includes a secondary sun gear 321, a secondary planetary gear 322, an output planetary carrier 323, a secondary inner gear ring 340, and a second bearing 324. The secondary sun gear 321 is fixedly connected to the primary planetary carrier 315, the secondary planetary gear 322 is rotatably mounted on the output planetary carrier 323, the output planetary carrier 323 is rotatably mounted on the housing 001 through the second bearing 324, the secondary inner gear ring 340 is fixedly connected to the housing 001, and the secondary planetary gear 322 is meshed with the secondary sun gear 321 and the secondary inner gear ring 340 at the same time. During operation, the primary planetary carrier 315 transmits torque to the secondary sun gear 321, the secondary sun gear 321 drives the secondary planetary gear 322 to rotate, and the secondary planetary gear 322 rotates while revolving, thereby driving the output planetary carrier 323 to rotate, and outputting torque through the output planetary carrier 323.

[0048] Optionally, two limit retaining rings 325 arranged in the axial direction are installed on the outer peripheral surface of the secondary sun gear 321, and the primary planet carrier 315 is sleeved outside the secondary sun gear 321, and the portion of the primary planet carrier 315 sleeved outside the secondary sun gear 321 is located between the two limit retaining rings 325. With such a design, when the secondary planet carrier generates axial runout relative to the secondary sun gear 321 during operation, the two limit retaining rings 325 cooperate to limit the range, thereby ensuring the stability of the overall transmission structure.

[0049] Please combine Figure 2 and Figure 4 Optionally, a third limit block 326 is installed at one end of the primary sun gear 313 close to the secondary sun gear 321, and the third limit block 326 has a third limit surface facing the secondary sun gear 321. A fourth limit block 327 is installed on the end surface of the secondary sun gear 321 facing the primary sun gear 313, and the fourth limit block 327 has a fourth limit surface facing the primary sun gear 313. One of the third limit surface and the fourth limit surface is set as an arc surface, and the other is set as a plane, and the third limit surface and the fourth limit surface are in contact. In this design, the third limit surface and the fourth limit surface cooperate to limit the axial position of the primary sun gear 313 and the secondary sun gear 321, and because the third limit surface and the fourth limit surface are point contact, the contact area is small, the friction is small, and they can rotate relatively, so as to adapt to the vibration during the operation of the gearbox. That is, under the vibration condition, the reliability of the axial position of the secondary sun gear 321 and the primary sun gear 313 can also be guaranteed.

[0050] Please combine Figure 2 and Figure 5 , further, optionally, a fifth limit block 328 is installed at one end of the secondary sun gear 321 close to the output planet carrier 323, and the fifth limit block 328 has a fifth limit surface facing the output planet carrier 323. A sixth limit block 329 is installed on the end surface of the output planet carrier 323 facing the secondary sun gear 321, and the sixth limit block 329 has a sixth limit surface facing the secondary sun gear 321. One of the fifth limit surface and the sixth limit surface is set as an arc surface, and the other is set as a plane, and the fifth limit surface and the sixth limit surface are in contact. In this design, the fifth limit surface and the sixth limit surface cooperate to limit the axial position of the secondary sun gear 321 and the output planet carrier 323, and because the fifth limit surface and the sixth limit surface are point contact, the contact area is small, the friction is small, and they can rotate relatively, so as to adapt to the vibration during the operation of the gearbox. That is, under vibration conditions, the reliability of the axial position of the output planet carrier 323 and the secondary sun gear 321 can also be guaranteed.

[0051] In this embodiment, the auxiliary transmission input mechanism 200 optionally includes an auxiliary transmission input shaft 210, an auxiliary transmission sun gear 220, an auxiliary transmission planetary gear 230, an auxiliary transmission planetary carrier 240, an auxiliary transmission inner gear ring 250, a first auxiliary transmission gear 260, a second auxiliary transmission gear 270, a third bearing 280 and a fourth bearing 290. The auxiliary transmission input shaft 210 is rotatably matched with the housing 001 through the third bearing 280, and the axis of the auxiliary transmission input shaft 210 is parallel to the axis of the transmission shaft 311. The auxiliary transmission sun gear 220 is fixedly connected to the auxiliary transmission input shaft 210, the auxiliary transmission planetary gear 230 is rotatably mounted on the auxiliary transmission planetary carrier 240, and the auxiliary transmission planetary carrier 240 is rotatably mounted on the housing 001 through the fourth bearing 290. The auxiliary transmission inner gear ring 250 is fixed in the housing 001, and the auxiliary transmission planetary gear 230 is meshed with the auxiliary transmission sun gear 220 and the auxiliary transmission inner gear ring 250 at the same time. The first auxiliary transmission gear 260 is fixed to the auxiliary transmission planetary carrier 240 and the two are coaxially arranged. The second auxiliary transmission gear 270 is fixed to the primary inner gear ring 314 and the two are coaxially arranged. The first auxiliary transmission gear 260 is meshed with the second auxiliary transmission gear 270 .

[0052] It should be noted that the auxiliary transmission input shaft 210 rotates, driving the auxiliary transmission sun gear 220 to rotate, thereby driving the auxiliary transmission planetary gear 230 to rotate. The auxiliary transmission planetary gear 230 rotates while revolving, thereby driving the auxiliary transmission planetary carrier 240 to rotate. The auxiliary transmission planetary carrier 240 drives the first auxiliary transmission gear 260 to rotate, thereby driving the second auxiliary transmission gear 270 to rotate. The rotation of the second auxiliary transmission gear 270 can output torque to the first-stage internal gear ring 314.

[0053] Please combine Figure 7 It should be understood that the second auxiliary transmission gear 270 can be sleeved on the outside of the primary inner gear ring 314, and the two are interference fit. In order to improve the firmness of the combination of the second auxiliary transmission gear 270 and the primary inner gear ring 314, further, a first pin groove is provided on the second auxiliary transmission gear 270, and a second pin groove is provided on the primary inner gear ring 314. The first pin groove and the second pin groove are butted and cooperated to assemble a positioning pin 400. The positioning pin 400 is used to limit the relative rotation of the second auxiliary transmission gear 270 and the primary inner gear ring 314. It is worth noting that the number of the first pin groove and the second pin groove can be multiple, so that multiple pairs of jacks can be formed, and the cooperation of multiple positioning pins 400 can enhance the firmness of the second auxiliary transmission gear 270 and the primary inner gear ring 314.

[0054] Please combine Figure 6In this embodiment, optionally, the axis of the main input shaft 110 and the axis of the transmission shaft 311 cooperate to define a first plane 002; the axis of the auxiliary input shaft 210 and the axis of the transmission shaft 311 cooperate to define a second plane 003, and the angle between the first plane 002 and the second plane 003 is α, and the value range of α is between 19.5°-20.5°. Such a design ensures that the phase angle of the main input shaft 110 and the auxiliary input shaft 210 is controlled within a reasonable range, facilitates the assembly of the main input shaft 110 and the auxiliary input shaft 210, improves the assembly quality and assembly accuracy, and is conducive to the compact design of the overall structure.

[0055] In this embodiment, optionally, there are multiple vibration sensors distributed at corresponding positions of the housing 001, which can monitor multiple bearings in the housing 001 and judge the working conditions of the bearings at corresponding positions through vibration parameters. That is, the vibration parameters can be used to determine whether the bearings are damaged, so that timely processing can be performed.

[0056] The planetary straightening machine gearbox provided in this embodiment has a main input shaft 110 and an output mechanism 300 connected by a bevel gear transmission assembly. The bevel gear transmission assembly has a compact structure, so that after the main input shaft 110 and the output mechanism 300 are matched, the overall structure is compact and the volume is small. At the same time, an auxiliary transmission input mechanism 200 matched with the output mechanism 300 is provided on the housing 001. When the output torque of the output mechanism 300 needs to be fine-tuned, due to the large load of the main input mechanism 100, the regulation is inconvenient and the adjustment accuracy is not high. Therefore, the auxiliary transmission input mechanism 200 intervenes to adjust the torque of the output mechanism 300 without affecting the main input mechanism 100, and the adjustment is convenient and reliable.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A planetary straightening machine gearbox, characterized in that: include: A housing (001) and a main input mechanism (100), an auxiliary transmission input mechanism (200) and an output mechanism (300) all mounted on the housing (001); the main input mechanism (100) comprises a main input shaft (110) and a bevel gear transmission assembly, the main input shaft (110) is transmission-connected to the output mechanism (300) via the bevel gear transmission assembly; the auxiliary transmission input mechanism (200) is transmission-connected to the output mechanism (300), the auxiliary transmission input mechanism (200) is used to cooperate with the main input mechanism (100) to adjust the torque of the output mechanism (300).

2. The planetary straightening machine gearbox according to claim 1, characterized in that: The output mechanism (300) comprises a primary planetary transmission assembly (310) and a secondary planetary transmission assembly (320); the output portion of the primary planetary transmission assembly (310) is transmission-connected to the input portion of the secondary planetary transmission assembly (320); the main input shaft (110) is connected to the input portion of the primary planetary transmission assembly (310) via the bevel gear transmission assembly; and the auxiliary transmission input mechanism (200) is transmission-connected to the primary planetary transmission assembly (310).

3. The planetary straightening machine gearbox according to claim 2, characterized in that: The first-stage planetary transmission assembly (310) comprises a transmission shaft (311), a first bearing (312), a first-stage sun gear (313), a first-stage planetary gear (318), a first-stage inner gear ring (314) and a first-stage planetary carrier (315); the transmission shaft (311) is rotatably matched with the housing (001) through the first bearing (312); the main input shaft (110) and the transmission shaft (311) are arranged vertically, and the main input shaft (110) is connected to the transmission shaft through the bevel gear transmission assembly. (311); the transmission shaft (311) is fixedly connected to the primary sun gear (313); the primary planetary gear (318) is rotatably mounted on the primary planetary carrier (315); the primary inner gear ring (314) is rotatably mounted on the housing (001); the primary planetary gear (318) is meshed with the primary sun gear (313) and the primary inner gear ring (314) at the same time; the primary planetary carrier (315) is connected to the input part of the secondary planetary transmission assembly (320); The auxiliary transmission input mechanism (200) is in transmission connection with the primary internal gear ring (314).

4. The planetary straightening machine gearbox according to claim 3, characterized in that: The housing (001) comprises a first inner wall and a second inner wall which are arranged at intervals in the axial direction of the transmission shaft (311); a retaining ring (011) is provided on each of the first inner wall and the second inner wall; and the first-stage planetary carrier (315) is clamped between the two retaining rings (011) to limit the axial movement of the first-stage planetary carrier (315) in the transmission shaft (311).

5. The planetary straightening machine gearbox according to claim 3, characterized in that: The auxiliary transmission input mechanism (200) comprises an auxiliary transmission input shaft (210), an auxiliary transmission sun gear (220), an auxiliary transmission planetary gear (230), an auxiliary transmission planetary carrier (240), an auxiliary transmission inner ring gear (250), a first auxiliary transmission gear (260) and a second auxiliary transmission gear (270); the auxiliary transmission input shaft (210) is rotatably matched with the housing (001), and the axis of the auxiliary transmission input shaft (210) is parallel to the axis of the transmission shaft (311); the auxiliary transmission sun gear (220) is fixedly connected to the auxiliary transmission input shaft (210), and the auxiliary transmission planetary gear (230) is fixedly connected to the auxiliary transmission input shaft (210). 30) is rotatably mounted on the auxiliary planetary carrier (240), the auxiliary internal gear ring (250) is fixed in the housing (001), and the auxiliary planetary gear (230) is meshed with the auxiliary sun gear (220) and the auxiliary internal gear ring (250) at the same time; the first auxiliary gear (260) is fixed to the auxiliary planetary carrier (240) and the two are coaxially arranged, and the second auxiliary gear (270) is fixed to the primary internal gear ring (314) and the two are coaxially arranged; the first auxiliary gear (260) is meshed with the second auxiliary gear (270).

6. The planetary straightening machine gearbox according to claim 5, characterized in that: The second auxiliary transmission gear (270) is provided with a first pin groove, and the primary inner gear ring (314) is provided with a second pin groove. The first pin groove and the second pin groove are connected and cooperate with each other to assemble a positioning pin (400). The positioning pin (400) is used to limit the relative rotation of the second auxiliary transmission gear (270) and the primary inner gear ring (314).

7. The planetary straightening machine gearbox according to claim 5, characterized in that: The axis of the main input shaft (110) and the axis of the transmission shaft (311) cooperate to define a first plane (002); the axis of the auxiliary transmission input shaft (210) and the axis of the transmission shaft (311) cooperate to define a second plane (003), and the angle between the first plane (002) and the second plane (003) is set between 19.5° and 20.5°.

8. The planetary straightening machine gearbox according to claim 3, characterized in that: The secondary planetary transmission assembly (320) comprises a secondary sun gear (321), a secondary planetary gear (322), an output planetary carrier (323) and a secondary inner gear ring (340); the secondary sun gear (321) is fixedly connected to the primary planetary carrier (315); the secondary planetary gear (322) is rotatably mounted on the output planetary carrier (323); the output planetary carrier (323) is rotatably mounted on the housing (001); the secondary inner gear ring (340) is fixedly connected to the housing (001); and the secondary planetary gear (322) is meshed with the secondary sun gear (321) and the secondary inner gear ring (340) at the same time.

9. The planetary straightening machine gearbox according to claim 8, characterized in that: The outer peripheral surface of the secondary sun gear (321) is provided with two limit retaining rings (325) arranged in its axial direction, the primary planet carrier (315) is sleeved on the outside of the secondary sun gear (321), and the portion of the primary planet carrier (315) sleeved on the outside of the secondary sun gear (321) is located between the two limit retaining rings (325).

10. The planetary straightening machine gearbox according to claim 1, characterized in that: The planetary straightening machine gearbox further comprises a plurality of vibration sensors, which are all mounted on the housing (001) and are used to obtain vibration parameters of bearings at corresponding positions.

Images