Double-speed double-shaft gearbox

Abstract

The invention relates to the field of lathe spindle gearboxes, in particular to a double-speed double-shaft gearbox which comprises a shell, an input mechanism, a gear shifting mechanism and an output mechanism, and the input mechanism is arranged on the shell; the gear shifting mechanism is arranged on the shell, the output end of the gear shifting mechanism is connected with the input mechanism, and the gear shifting mechanism is used for adjusting the output gear state of the input mechanism; the output mechanism is arranged on the shell and comprises an output shaft, an output bearing assembly, an output gear and a water outlet shaft, the output shaft is rotationally arranged on the shell through the output bearing assembly, the output gear is fixed to the output shaft, the output gear is a bevel gear, and the output shaft is in transmission connection with the output end of the input mechanism through the output gear; a cooling loop is arranged in the output shaft, one end of the water outlet shaft is connected with one end of the output shaft, and a water outlet is formed in the water outlet shaft and communicated with the cooling loop. The machining adaptability of the lathe is improved, and the machining quality is improved.

Description

Technical Field

[0001] The invention relates to the field of lathe spindle gearboxes, in particular to a double-speed double-shaft gearbox. Background Art

[0002] In the field of machine tool processing, lathes are an extremely important metal processing equipment, and the operating performance of their spindles plays a decisive role in the processing accuracy, efficiency and quality of the processed workpieces. As the core component of the lathe spindle transmission system, the technical level of the lathe spindle gearbox is directly related to the processing capacity and processing effect of the entire lathe.

[0003] With the rapid development of the manufacturing industry, the processing requirements for parts are increasingly tending towards high precision, high efficiency and diversification. During lathe processing, different workpiece materials, shapes and processing technologies have completely different requirements for the spindle speed and torque. For example, when rough machining hard alloy steel materials, the spindle needs to output a large torque to ensure that the tool can smoothly cut into the workpiece and efficiently remove the excess, and the speed is relatively low at this time; when finishing some non-ferrous metals, in order to obtain smooth surface quality and precise dimensional accuracy, the spindle requires a higher speed and a relatively small torque requirement.

[0004] Regarding the above-mentioned related technologies, traditional lathe spindle gearboxes mostly adopt a single-speed or limited fixed transmission ratio design, and are unable to flexibly adjust the spindle speed and torque according to actual working conditions during the processing, which greatly limits the processing adaptability of the lathe and the room for improvement of processing quality. Summary of the invention

[0005] In order to improve the processing adaptability of a lathe and the improvement space of processing quality, the present invention provides a dual-speed dual-shaft gearbox.

[0006] The present invention provides a dual-speed dual-shaft gearbox, which adopts the following technical solution:

[0007] A dual-speed dual-shaft gearbox comprises a housing, an input mechanism, a shift mechanism and an output mechanism, wherein the input mechanism is arranged on the housing;

[0008] The shift mechanism is arranged on the housing, and the output end of the shift mechanism is connected to the input mechanism, and the shift mechanism is used to adjust the output gear state of the input mechanism;

[0009] The output mechanism is arranged on the housing, and comprises an output shaft, an output bearing assembly, an output gear and a water outlet shaft. The output shaft is rotatably arranged on the housing through the output bearing assembly, the output gear is fixed on the output shaft, and the output gear is a helical gear. The output shaft is transmission-connected to the output end of the input mechanism through the output gear.

[0010] A cooling circuit is provided in the output shaft, one end of the water outlet shaft is connected to one end of the output shaft, and a water outlet is provided on the water outlet shaft, and the water outlet is communicated with the cooling circuit.

[0011] Optionally, the output bearing assembly includes a bearing seat, a spacer sleeve, a first bearing, a second bearing and a pressure cover, the outer end surface of the bearing seat is fixedly connected to the housing, the inner end of the bearing seat is fixedly connected to the outer ring of the first bearing, the inner ring of the first bearing is fixedly connected to the output shaft, the spacer sleeve is sleeved on the output shaft, one end of the spacer sleeve abuts against the first bearing, the other end of the spacer sleeve abuts against the output gear, one end of the pressure cover is fixedly connected to the housing, and the other end of the pressure cover abuts against the first bearing;

[0012] The inner ring of the second bearing is fixedly connected to the output shaft, and the outer ring of the second bearing is fixedly connected to the housing.

[0013] Optionally, the input mechanism includes an input shaft, a sun gear, a planetary gear, a planetary shaft, and a planetary carrier. The input shaft is rotatably arranged on the housing via a bearing, the sun gear is arranged at one end of the input shaft, the planetary shaft is arranged on the planetary carrier, the planetary gear is rotatably arranged on the planetary carrier via the planetary shaft, the planetary gear is meshed with the sun gear, and the planetary carrier is the output end of the input mechanism.

[0014] Optionally, the gears of the sun gear and the planetary gears are all helical gears.

[0015] Optionally, the shift mechanism includes a shift fork, a drive assembly, a first gear ring, a second gear ring, a third gear ring, a fourth gear ring and a fifth gear ring. The shift fork is slidably arranged on the housing, the drive assembly is arranged on the housing, and the drive assembly is used to drive the shift fork to move. The first gear ring is fixed to the input shaft, the second gear ring is fixed to the outer end surface of one end of the fifth gear ring, one end of the third gear ring slides on the first gear ring and the second gear ring by meshing, a gear is arranged on the outer end of the third gear ring, the outer end of the fourth gear ring is fixedly connected to the housing, the inner end of the fourth gear ring can mesh with the third gear ring, and the inner end of the other end of the fifth gear ring meshes with the planetary gear.

[0016] Optionally, the driving assembly includes a motor, a worm, a guide rod, a shifting rod and a guide block, the two ends of the guide rod are fixed on the housing, the shifting fork is slidably arranged on the guide rod, the motor is arranged on the housing, one end of the worm is drivingly connected to the output end of the motor, the shifting rod is drivingly connected to the other end of the worm, the guide block is fixedly connected to the shifting fork, and the shifting rod rotates in the guide block. The shifting rod is used to drive the guide block to drive the shifting fork to slide on the guide rod.

[0017] Optionally, a transmission mechanism is also provided on the shell, and the transmission mechanism includes a first transmission shaft, a second transmission shaft, a first transmission gear and a second transmission gear, both ends of the first transmission shaft are rotatably arranged on the shell through bearings, the inner end of the first transmission gear is fixed on the first transmission shaft, both ends of the second transmission shaft are rotatably arranged on the shell through bearings, the inner end of the second transmission gear is fixedly connected to the second transmission shaft, the first transmission gear is meshed with the second transmission gear, and the second transmission gear is meshed with the output gear.

[0018] Optionally, the output mechanism also includes a detection gear, a positioning ring, a reading sensor and a controller, the detection gear is fixedly connected to the output shaft, one end of the positioning ring is fixedly connected to the output shaft, one end of the positioning ring abuts against the detection gear, the positioning ring is used to position and fix the detection gear, the reading sensor is fixed on the housing close to the detection gear, the controller is arranged on the housing, and the reading sensor is electrically connected to the controller.

[0019] Optionally, a lubrication mechanism is also provided on the shell, and the lubrication mechanism includes an oil pipe and an oil separator, one end of the oil pipe is connected to the oil separator, and the other end of the oil pipe is connected to the shell, and the oil pipe is connected to the input mechanism, the output mechanism and the transmission mechanism for lubricating the input mechanism, the output mechanism and the transmission mechanism.

[0020] Optionally, the lubrication mechanism also includes an oil inlet pipe, an oil outlet pipe, a tee, a pressure sensor and a pressure gauge, the oil inlet pipe is connected to the oil separator, the oil outlet pipe is connected to the housing, the oil inlet pipe is connected to the oil pump, and the pressure sensor and the pressure gauge are connected to the oil separator through the tee.

[0021] In summary, the present invention includes at least one of the following beneficial technical effects:

[0022] 1. By setting up an input mechanism, when the power of the power source needs to be transmitted to the gearbox, the input shaft receives the power to rotate, the input shaft drives the sun gear to rotate, the sun gear drives the planetary gear and the planetary carrier to rotate together, and then the planetary carrier transmits the power to the output mechanism. The transmission structure composed of the planetary gear and the sun gear has a compact structure and reduces the volume; the planetary gear and the sun gear are helical gears, which reduces the load between each gear, reduces the friction coefficient, and improves the transmission efficiency. Compared with traditional spur gears, helical gears are more compact and improve space utilization.

[0023] 2. By setting a shift mechanism, when it is necessary to adjust the output speed of the input mechanism, the shift mechanism is used for adjustment, the drive assembly drives the shift fork to slide, and the plugging and unplugging drive the third gear ring to slide on the first gear ring and the second gear ring; when the third gear ring is meshed with the first gear ring and the second gear ring at the same time, it is an acceleration state, the input shaft drives the first gear ring and the second gear ring to rotate, and drives the fifth gear ring to rotate, and the fifth gear ring drives the planetary carrier to rotate at the same time; when the third gear ring is only meshed with the second gear ring, the input shaft drives the sun gear to rotate alone, and the planetary carrier is not locked at this time, the sun gear drives the planetary gear to rotate, and the fifth gear ring and the planetary carrier do not rotate, and it is a neutral state at this time; when the third gear ring fits with the fourth gear ring, and the third gear ring is meshed with the second gear ring on the fifth gear ring, the fifth gear ring is locked, the input shaft drives the sun gear to rotate, the sun gear drives the planetary gear to rotate, the planetary gear and the fifth gear ring are meshed and rotated internally, the planetary gear rotates in the fifth gear ring, and drives the planetary carrier to rotate, and it is a deceleration state at this time.

[0024] 3. Detection and positioning device: The detection gear is combined with a reading sensor and a controller to achieve real-time monitoring of the output position, enhancing the intelligence level of the system. The positioning ring ensures the position accuracy of the detection gear, thereby improving the reliability of the measurement data.

[0025] 4. Lubrication mechanism: The automatic lubrication system ensures that all moving parts are fully lubricated, reduces the friction coefficient, reduces wear, and extends the service life of the equipment. Systematic and automated lubrication management reduces the workload of manual maintenance and improves work efficiency.

[0026] 5. Lubricating oil circuit monitoring: Adding pressure sensors and pressure gauges can monitor the pressure status of the lubricating oil in real time, detect potential problems in time, and prevent mechanical failures caused by lack of proper lubrication. The three-way structure facilitates the connection of the pressure sensor and pressure gauge, while also simplifying the pipeline layout, improving the overall aesthetics and ease of maintenance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0028] Figure 2yes Figure 1 A cross-sectional schematic diagram of

[0029] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0030] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B;

[0031] Figure 5 yes Figure 2 A partial enlarged schematic diagram of part C in the middle;

[0032] Figure 6 yes Figure 1 A schematic diagram of a side view of

[0033] Figure 7 It is a partial enlarged schematic diagram of the reading sensor location.

[0034] Description of reference numerals: 100, housing; 200, output mechanism; 210, output shaft; 220, output bearing assembly; 221, bearing seat; 222, spacer; 223, first bearing; 224, second bearing; 225, gland; 230, output gear; 240, water outlet shaft; 250, cooling circuit; 260, water outlet; 270, detection gear; 280, positioning ring; 290, reading sensor; 300, input mechanism; 310, input shaft; 320, sun gear; 330, planetary gear; 340, planetary shaft; 350, planetary carrier; 400, shift mechanism; 410, shift fork; 420 , drive assembly; 421, motor; 422, worm; 423, guide rod; 424, lever; 425, guide block; 430, first gear ring; 440, second gear ring; 450, third gear ring; 460, fourth gear ring; 470, fifth gear ring; 500, transmission mechanism; 510, first transmission shaft; 520, second transmission shaft; 530, first transmission gear; 540, second transmission gear; 600, controller; 700, lubrication mechanism; 710, oil pipeline; 720, oil distributor; 730, oil inlet pipe; 740, oil outlet pipe; 750, tee; 760, pressure sensor; 770, pressure gauge. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 7 , the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] The embodiment of the present invention discloses a dual-speed dual-shaft gearbox. Figure 1 -Attached Figure 7 A dual-speed dual-shaft gearbox mainly includes a housing 100, an input mechanism 300, a shift mechanism 400 and an output mechanism 200, wherein the input mechanism 300 is arranged on the housing 100;

[0041] The shift mechanism 400 is disposed on the housing 100 , and the output end of the shift mechanism 400 is connected to the input mechanism 300 . The shift mechanism 400 is used to adjust the output gear state of the input mechanism 300 .

[0042] The output mechanism 200 is arranged on the housing 100, and the output mechanism 200 includes an output shaft 210, an output bearing assembly 220, an output gear 230 and a water outlet shaft 240. The output shaft 210 is rotatably arranged on the housing 100 through the output bearing assembly 220, and the output gear 230 is fixed on the output shaft 210, and the output gear 230 is a helical gear. The output shaft 210 is transmission-connected with the output end of the input mechanism 300 through the output gear 230;

[0043] A cooling circuit 250 is provided in the output shaft 210 . One end of the water outlet shaft 240 is connected to one end of the output shaft 210 . A water outlet 260 is provided on the water outlet shaft 240 . The water outlet 260 is communicated with the cooling circuit 250 .

[0044] When the power of the power source needs to be transmitted to the gearbox, the input shaft 310 receives the power to rotate, the input shaft 310 drives the sun gear 320 to rotate, the sun gear 320 drives the planetary gear 330 and the planetary carrier 350 to rotate together, and then the planetary carrier 350 transmits the power to the output mechanism 200. The transmission structure composed of the planetary gear 330 and the sun gear 320 has a compact structure and reduces the volume; the housing 100 is composed of two parts, the upper part of the housing 100 is formed by integral die-casting, which can achieve the characteristics of high precision, high rigidity and low vibration during use.

[0045] In some embodiments, the output bearing assembly 220 includes a bearing seat 221, a spacer sleeve 222, a first bearing 223, a second bearing 224 and a pressure cover 225, the outer end surface of the bearing seat 221 is fixedly connected to the housing 100, the inner end of the bearing seat 221 is fixedly connected to the outer ring of the first bearing 223, the inner ring of the first bearing 223 is fixedly connected to the output shaft 210, the spacer sleeve 222 is sleeved on the output shaft 210, one end of the spacer sleeve 222 abuts against the first bearing 223, and the other end of the spacer sleeve 222 abuts against the output gear 230, one end of the pressure cover 225 is fixedly connected to the housing 100, and the other end of the pressure cover 225 abuts against the first bearing 223; the inner ring of the second bearing 224 is fixedly connected to the output shaft 210, and the outer ring of the second bearing 224 is fixedly connected to the housing 100.

[0046] The use of a multi-layer structure (such as the spacer 222) can enhance the stability of the system, reduce vibration and noise, and improve transmission efficiency. The design of the gland 225 helps prevent dust and other impurities from entering the interior, maintains internal cleanliness, and further ensures long-term reliable operation of the equipment.

[0047] In some embodiments, the input mechanism 300 includes an input shaft 310, a sun gear 320, a planetary gear 330, a planetary shaft 340, and a planetary carrier 350. The input shaft 310 is rotatably set on the housing 100 through a bearing, the sun gear 320 is set at one end of the input shaft 310, the planetary shaft 340 is set on the planetary carrier 350, the planetary gear 330 is rotatably set on the planetary carrier 350 through the planetary shaft 340, the planetary gear 330 is meshed with the sun gear 320, and the planetary carrier 350 is the output end of the input mechanism 300.

[0048] The planetary gear 330 and the sun gear 320 are helical gears, which reduces the load between each gear, reduces the friction coefficient, and improves the transmission efficiency. Compared with traditional spur gears, helical gears are more compact and improve space utilization.

[0049] In some embodiments, the gears of the sun gear 320 and the planetary gear 330 are all helical gears. Compared with spur gears, helical gears have a smoother meshing process, can reduce noise, improve work efficiency, and are particularly suitable for operating occasions that require a quiet environment.

[0050] In some embodiments, the shift mechanism 400 includes a shift fork 410, a drive assembly 420, a first ring gear 430, a second ring gear 440, a third ring gear 450, a fourth ring gear 460 and a fifth ring gear 470. The shift fork 410 is slidably disposed on the housing 100, the drive assembly 420 is disposed on the housing 100, the drive assembly 420 is used to drive the shift fork 410 to move, the first ring gear 430 is fixed on the input shaft 310, the second ring gear 440 is fixed to the outer end surface of one end of the fifth ring gear 470, one end of the third ring gear 450 slides on the first ring gear 430 and the second ring gear 440 by meshing, a gear is disposed at the outer end of the third ring gear 450, the outer end of the fourth ring gear 460 is fixedly connected to the housing 100, the inner end of the fourth ring gear 460 can mesh with the third ring gear 450, and the inner end of the other end of the fifth ring gear 470 meshes with the planetary gear 330.

[0051] When the output speed of the input mechanism 300 needs to be adjusted, the adjustment is performed through the shift mechanism 400, the drive assembly 420 drives the shift fork 410 to slide, and the plugging and unplugging drives the third gear ring 450 to slide on the first gear ring 430 and the second gear ring 440; when the third gear ring 450 is meshed with the first gear ring 430 and the second gear ring 440 at the same time, it is an acceleration state, the input shaft 310 drives the first gear ring 430 and the second gear ring 440 to rotate, and drives the fifth gear ring 470 to rotate, and at this time the fifth gear ring 470 also drives the planetary carrier 350 to rotate; when the third gear ring 450 is only meshed with the second gear ring 440, at this time the input shaft 310 drives the planetary carrier 350 alone. The positive gear 320 rotates, and the planet carrier 350 is not locked at this time. The sun gear 320 drives the planet gears 330 to rotate, and the fifth ring gear 470 and the planet carrier 350 do not rotate. At this time, it is in a neutral state; when the third ring gear 450 and the fourth ring gear 460 are fitted, and the third ring gear 450 is meshed with the second ring gear 440 on the fifth ring gear 470, the fifth ring gear 470 is locked at this time, the input shaft 310 drives the sun gear 320 to rotate, the sun gear 320 drives the planet gears 330 to rotate, the planet gears 330 are meshed and rotated with the fifth ring gear 470, the planet gears 330 rotate in the fifth ring gear 470, and drive the planet carrier 350 to rotate, and it is in a deceleration state at this time.

[0052] In some embodiments, the driving assembly 420 includes a motor 421, a worm 422, a guide rod 423, a lever 424 and a guide block 425. Both ends of the guide rod 423 are fixed on the housing 100, the fork 410 is slidably arranged on the guide rod 423, the motor 421 is arranged on the housing 100, one end of the worm 422 is transmission-connected to the output end of the motor 421, the lever 424 is transmission-connected to the other end of the worm 422, the guide block 425 is fixedly connected to the fork 410, and the lever 424 rotates in the guide block 425. The lever 424 is used to drive the guide block 425 to drive the fork 410 to slide on the guide rod 423; the motor 421 has a large starting torque, a strong overload capacity, high reliability, and simple maintenance; the worm gear 422 has a large transmission ratio, a compact structure, a stable transmission, and a self-locking property; and the gear shifting is smoother.

[0053] The motor 421 drives the worm 422-shift rod 424 mechanism to control the movement of the shift fork 410, which not only increases the accuracy of the shifting, but also improves the response speed of the system. In addition, the electrified control is easy to integrate into the modern control system, which is convenient for remote monitoring and fault diagnosis.

[0054] In some embodiments, a transmission mechanism 500 is further provided on the housing 100, and the transmission mechanism 500 includes a first transmission shaft 510, a second transmission shaft 520, a first transmission gear 530 and a second transmission gear 540. Both ends of the first transmission shaft 510 are rotatably arranged on the housing 100 through bearings, the inner end of the first transmission gear 530 is fixed on the first transmission shaft 510, and both ends of the second transmission shaft 520 are rotatably arranged on the housing 100 through bearings, the inner end of the second transmission gear 540 is fixedly connected to the second transmission shaft 520, the first transmission gear 530 is meshed with the second transmission gear 540, and the second transmission gear 540 is meshed with the output gear 230. The additional transmission mechanism 500 expands the transmission range of the entire system and provides users with more diverse choices. The precise meshing between the gears ensures the high efficiency and reliability of power transmission.

[0055] In some embodiments, the output mechanism 200 also includes a detection gear 270, a positioning ring 280, a reading sensor 290 and a controller 600. The detection gear 270 is fixedly connected to the output shaft 210, one end of the positioning ring 280 is fixedly connected to the output shaft 210, one end of the positioning ring 280 abuts against the detection gear 270, and the positioning ring 280 is used to position and fix the detection gear 270. The reading sensor 290 is fixed on the housing 100 near the detection gear 270, the controller 600 is arranged on the housing 100, and the reading sensor 290 is electrically connected to the controller 600.

[0056] The detection gear 270 is combined with the reading sensor 290 and the controller 600 to realize real-time monitoring of the output position, thereby enhancing the intelligence level of the system. The positioning ring 280 ensures the position accuracy of the detection gear 270, thereby improving the reliability of the measurement data.

[0057] In some embodiments, a lubrication mechanism 700 is further provided on the housing 100, and the lubrication mechanism 700 includes an oil pipe 710 and an oil distributor 720, one end of the oil pipe 710 is connected to the oil distributor 720, and the other end of the oil pipe 710 is connected to the housing 100, and the oil pipe 710 is connected to the input mechanism 300, the output mechanism 200 and the transmission mechanism 500, and is used to lubricate the input mechanism 300, the output mechanism 200 and the transmission mechanism 500. The automatic lubrication system ensures that all moving parts are fully lubricated, reduces the friction coefficient, reduces wear, and extends the service life of the equipment. Systematic and automated lubrication management reduces the workload of manual maintenance and improves work efficiency.

[0058] In some embodiments, the lubrication mechanism 700 further includes an oil inlet pipe 730, an oil outlet pipe 740, a tee 750, a pressure sensor 760 and a pressure gauge 770. The oil inlet pipe 730 is connected to the oil distributor 720, the oil outlet pipe 740 is connected to the housing 100, the oil inlet pipe 730 is connected to the oil pump, and the pressure sensor 760 and the pressure gauge 770 are connected to the oil distributor 720 through the tee 750. The addition of the pressure sensor 760 and the pressure gauge 770 can monitor the pressure state of the lubricating oil in real time, detect potential problems in time, and prevent mechanical failures caused by lack of proper lubrication. The tee 750 structure facilitates the connection of the pressure sensor 760 and the pressure gauge 770, and also simplifies the pipeline layout, improving the overall aesthetics and maintainability of the system.

[0059] The implementation principle of a dual-speed dual-shaft gearbox in an embodiment of the present invention is as follows:

[0060] The dual-speed dual-axis gearbox has a compact design. The planetary gear 330 system composed of helical gears effectively reduces the friction coefficient and load, improves transmission efficiency, and optimizes space utilization. The built-in shift mechanism 400 allows the user to switch between acceleration, deceleration and neutral states. The drive assembly 420 controls the movement of the shift fork 410 to achieve the meshing conversion between different gear rings to meet the speed change requirements. The detection and positioning device combines the reading sensor 290 and the controller 600 to monitor the output position in real time, ensure data accuracy and improve system intelligence. The automatic lubrication system cooperates with the lubrication oil circuit monitoring, including the pressure sensor 760 and the pressure gauge 770, to ensure that all moving parts are fully lubricated, extend the life of the equipment, reduce maintenance workload, prevent mechanical failures, and ensure the efficient operation of the system and the beauty and easy maintenance. This design comprehensively improves the performance, reliability and ease of operation of the gearbox.

[0061] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-speed dual-shaft gearbox, characterized in that: It comprises a housing (100), an input mechanism (300), a shift mechanism (400) and an output mechanism (200), wherein the input mechanism (300) is arranged on the housing (100); The shift mechanism (400) is arranged on the housing (100), and the output end of the shift mechanism (400) is connected to the input mechanism (300), and the shift mechanism (400) is used to adjust the output gear state of the input mechanism (300); The output mechanism (200) is arranged on the housing (100), and comprises an output shaft (210), an output bearing assembly (220), an output gear (230) and a water outlet shaft (240); the output shaft (210) is rotatably arranged on the housing (100) via the output bearing assembly (220); the output gear (230) is fixed on the output shaft (210), and the output gear (230) is a helical gear; the output shaft (210) is transmission-connected to the output end of the input mechanism (300) via the output gear (230); A cooling circuit (250) is provided in the output shaft (210), one end of the water outlet shaft (240) is connected to one end of the output shaft (210), and a water outlet (260) is provided on the water outlet shaft (240), and the water outlet (260) is in communication with the cooling circuit (250).

2. A dual-speed dual-shaft gearbox according to claim 1, characterized in that: The output bearing assembly (220) comprises a bearing seat (221), a spacer sleeve (222), a first bearing (223), a second bearing (224) and a pressure cover (225); the outer end surface of the bearing seat (221) is fixedly connected to the housing (100); the inner end of the bearing seat (221) is fixedly connected to the outer ring of the first bearing (223); the inner ring of the first bearing (223) is fixedly connected to the output shaft (210); the spacer sleeve (222) is sleeved on the output shaft (210); one end of the spacer sleeve (222) abuts against the first bearing (223); the other end of the spacer sleeve (222) abuts against the output gear (230); one end of the pressure cover (225) is fixedly connected to the housing (100); the other end of the pressure cover (225) abuts against the first bearing (223); The inner ring of the second bearing (224) is fixedly connected to the output shaft (210), and the outer ring of the second bearing (224) is fixedly connected to the housing (100).

3. A dual-speed dual-shaft gearbox according to claim 1, characterized in that: The input mechanism (300) comprises an input shaft (310), a sun gear (320), a planetary gear (330), a planetary shaft (340), and a planetary carrier (350); the input shaft (310) is rotatably arranged on the housing (100) via a bearing; the sun gear (320) is arranged at one end of the input shaft (310); the planetary shaft (340) is arranged on the planetary carrier (350); the planetary gear (330) is rotatably arranged on the planetary carrier (350) via the planetary shaft (340); the planetary gear (330) is meshed with the sun gear (320); and the planetary carrier (350) is the output end of the input mechanism (300).

4. A dual-speed dual-shaft gearbox according to claim 3, characterized in that: The gears of the sun gear (320) and the planetary gears (330) are both helical gears.

5. A dual-speed dual-shaft gearbox according to claim 3 or 4, characterized in that: The shift mechanism (400) comprises a shift fork (410), a drive assembly (420), a first ring gear (430), a second ring gear (440), a third ring gear (450), a fourth ring gear (460) and a fifth ring gear (470); the shift fork (410) is slidably disposed on the housing (100); the drive assembly (420) is disposed on the housing (100); the drive assembly (420) is used to drive the shift fork (410) to move; the first ring gear (430) is fixed on the input shaft (310); The second gear ring (440) is fixed to the outer end surface of one end of the fifth gear ring (470), one end of the third gear ring (450) slides on the first gear ring (430) and the second gear ring (440) in a meshing manner, a gear is provided at the outer end of the third gear ring (450), the outer end of the fourth gear ring (460) is fixedly connected to the housing (100), the inner end of the fourth gear ring (460) can mesh with the third gear ring (450), and the inner end of the other end of the fifth gear ring (470) meshes with the planetary gear (330).

6. A dual-speed dual-shaft gearbox according to claim 5, characterized in that: The driving assembly (420) comprises a motor (421), a worm (422), a guide rod (423), a shifting rod (424) and a guide block (425); both ends of the guide rod (423) are fixed on the housing (100); the shifting fork (410) is slidably arranged on the guide rod (423); the motor (421) is arranged on the housing (100); one end of the worm (422) is transmission-connected to the output end of the motor (421); the shifting rod (424) is transmission-connected to the other end of the worm (422); the guide block (425) is fixedly connected to the shifting fork (410); the shifting rod (424) rotates in the guide block (425); and the shifting rod (424) is used to drive the guide block (425) to drive the shifting fork (410) to slide on the guide rod (423).

7. A dual-speed dual-shaft gearbox according to any one of claims 1 to 4, characterized in that: The housing (100) is also provided with a transmission mechanism (500), and the transmission mechanism (500) comprises a first transmission shaft (510), a second transmission shaft (520), a first transmission gear (530) and a second transmission gear (540), wherein both ends of the first transmission shaft (510) are rotatably arranged on the housing (100) via bearings, an inner end of the first transmission gear (530) is fixed on the first transmission shaft (510), and both ends of the second transmission shaft (520) are rotatably arranged on the housing (100) via bearings, an inner end of the second transmission gear (540) is fixedly connected to the second transmission shaft (520), the first transmission gear (530) is meshed with the second transmission gear (540), and the second transmission gear (540) is meshed with the output gear (230).

8. A dual-speed dual-shaft gearbox according to any one of claims 1 to 4, characterized in that: The output mechanism (200) further comprises a detection gear (270), a positioning ring (280), a reading sensor (290) and a controller (600); the detection gear (270) is fixedly connected to the output shaft (210); one end of the positioning ring (280) is fixedly connected to the output shaft (210); one end of the positioning ring (280) abuts against the detection gear (270); the positioning ring (280) is used to position and fix the detection gear (270); the reading sensor (290) is fixed on the housing (100) near the detection gear (270); the controller (600) is arranged on the housing (100); and the reading sensor (290) is connected to the controller (600) via electrical signals.

9. A dual-speed dual-shaft gearbox according to any one of claims 1 to 4, characterized in that: The housing (100) is also provided with a lubricating mechanism (700), the lubricating mechanism (700) comprising a plurality of oil delivery pipes (710) and an oil distributor (720), one end of the oil delivery pipe (710) being in communication with the oil distributor (720), the other end of the oil delivery pipe (710) being connected with the housing (100), and the oil delivery pipe (710) being in communication with the input mechanism (300), the output mechanism (200) and the transmission mechanism (500), for lubricating the input mechanism (300), the output mechanism (200) and the transmission mechanism (500).

10. A dual-speed dual-shaft gearbox according to claim 9, characterized in that: The lubrication mechanism (700) further comprises an oil inlet pipe (730), an oil outlet pipe (740), a tee (750), a pressure sensor (760) and a pressure gauge (770); the oil inlet pipe (730) is in communication with the oil separator (720); the oil outlet pipe (740) is in communication with the housing (100); the oil inlet pipe (730) is in communication with an oil pump; and the pressure sensor (760) and the pressure gauge (770) are in communication with the oil separator (720) via the tee (750).

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