Directional output internal gear pump

Abstract

The invention relates to the field of gear pumps, and particularly discloses a directional output internal gear pump which comprises a pump body, the directional input assembly is fixed to the pump body and is in power connection with a main shaft of the pump body, power of a gear box of the wind generating set is transmitted to the first input shaft through the power transmission assembly, then two one-way wheels rotate, and through the one-way rotation effect of a ratchet mechanism, no matter whether a bevel gear shaft rotates forwards or reversely, the two one-way wheels rotate. When the pump body rotates, only one of the two reversing bevel gears rotates, then the output bevel gear can be driven to rotate in one direction all the time, then directional rotation of the main shaft of the pump body is achieved, the motor can adjust the rotating direction of the output shaft according to the rotating speed of the second input shaft, and then the distance between the two small fixing rings is adjusted. Therefore, the circumcircle diameters of the clamping plates are adjusted, the transmission ratio between the transmission adjusting mechanism and the transmission belt wheel is changed, and the rotating speed of the first input shaft is controlled to be stabilized within a certain range.

Description

Technical Field

[0001] This invention relates to the field of gear pumps, specifically to a directional output internal meshing gear pump. Background Technology

[0002] In wind turbine generators, the gearbox is a critical transmission component, and its reliable operation depends on a continuous and stable supply of lubricating oil. In harsh natural environments, rapid changes in wind direction can cause negative torque on the turbine blades, leading to a brief reversal of the gearbox input shaft. For traditional internal gear pumps directly driven by the gearbox main shaft, the pumping direction is fixedly coupled to the main shaft's rotation. Once the main shaft reverses, the pump's oil outlet direction will also reverse, not only failing to supply oil to the gearbox normally but also drawing oil from the gearbox's lubrication lines, causing a dangerous "oil backflow" phenomenon. This will cause the high-speed rotating gears and bearings to instantly lose lubrication and cooling, easily leading to severe wear or even complete failure of the equipment.

[0003] Furthermore, wind turbine generators operate over a wide speed range, and the speed of the gearbox output shaft fluctuates with wind speed. Directly driving the oil pump would cause significant fluctuations in the pump's speed and displacement, making it difficult to establish stable lubricating oil pressure and flow, thus affecting lubrication performance. Summary of the Invention

[0004] The purpose of this invention is to provide a directional output internal gear pump to overcome the above-mentioned defects in the prior art.

[0005] A directional output internal gear pump according to the present invention comprises: Pump body; A directional input assembly is fixed to the pump body and poweredly connected to the main shaft of the pump body. The directional input assembly includes a mounting plate, an output bevel gear, a reversing bevel gear, a bevel gear shaft, an intermediate bevel gear, an input bevel gear, and a first input shaft. The mounting plate is fixed to the pump body. The main shaft of the pump body passes through the mounting plate and is fixedly connected to the output bevel gear. Two rod seats symmetrically arranged on both sides of the output bevel gear are fixed on the mounting plate. The bevel gear shaft passes through the two rod seats and is rotatably connected to them. Two reversing bevel gears are provided and rotatably connected to the bevel gear shaft and simultaneously mesh with the output bevel gear. Two ratchet mechanisms are fixed on the bevel gear shaft and can drive the two reversing bevel gears to rotate in opposite directions respectively. The intermediate bevel gear is fixed on the bevel gear shaft and located between the two reversing bevel gears. The first input shaft is coaxially arranged with the main shaft of the pump body. The input bevel gear is fixed on the first input shaft and meshes with the intermediate bevel gear. A first housing is fixed to a mounting plate, the directional input component is disposed inside the first housing, and the first input shaft is rotatably connected to the front side wall of the first housing; A power transmission assembly is fixed to the first housing and is used to connect the gearbox output shaft and the first input shaft in the wind turbine generator set.

[0006] The transmission ratio adjustment component is poweredly connected to the first input shaft. The power input of the power transmission component is provided by the output shaft of the gearbox in the wind turbine generator set, and the power is transmitted to the first input shaft through the transmission ratio adjustment component. The power transmission component can adaptively adjust the transmission ratio of the transmission ratio adjustment component according to the rotational speed of the output shaft of the gearbox.

[0007] Preferably, the ratchet mechanism includes a one-way wheel, a pawl, and a first spring. The reversing bevel gear has a mounting groove recessed towards the bevel gear on its end face away from the intermediate bevel gear. The one-way wheel is disposed within the mounting groove and fixed to the bevel gear shaft, rotating with the bevel gear shaft. Multiple circumferentially evenly distributed limiting grooves are formed within the side wall of the mounting groove. Multiple circumferentially evenly distributed receiving grooves recessed towards the bevel gear shaft are formed on the outer circumference of the one-way wheel. Multiple pawls are provided and rotatably connected to multiple receiving grooves. A first spring is fixed between the receiving groove and the side wall of the receiving groove near the bevel gear shaft. The elastic force of the first spring causes the end of the receiving groove to engage with the limiting groove. When the receiving groove is located within the limiting groove, one side wall of the limiting groove is perpendicular to the end of the pawl, and the other side wall of the limiting groove is parallel to the end of the pawl. The pawls on the two one-way wheels face opposite directions.

[0008] Preferably, the transmission ratio adjustment component includes a transmission pulley, a transmission belt, a second housing, and a transmission adjustment mechanism. The transmission pulley and the transmission adjustment mechanism are connected by the transmission belt. The inner side of the transmission belt is provided with a plurality of belt teeth that are equidistantly distributed along its path. The outer circumference of the transmission pulley is provided with a plurality of uniformly distributed grooves. When the transmission belt abuts against the outer circumference of the transmission pulley, the belt teeth are engaged in the grooves.

[0009] Preferably, the transmission adjustment mechanism includes a small fixed ring, a large fixed ring, and a transmission component. Two large fixed rings are symmetrically arranged, and two small fixed rings are symmetrically arranged and located between the two large fixed rings. The diameter of the small fixed ring is smaller than the diameter of the large fixed ring. Multiple transmission components are provided and are evenly distributed circumferentially around the axis of the large fixed ring. The transmission component includes a clamping plate and diagonal rods. The clamping plate has a groove recessed towards the side closest to the small fixed ring axis on its side away from the small fixed ring axis. Two centrally symmetrical connecting slides are fixed to the side of the clamping plate closest to the small fixed ring axis. Each connecting slide has a through groove. Two diagonal rods are provided and slidably connected to the two through grooves. The two diagonal rods are arranged in a cross configuration. One diagonal rod has its ends fixed to a large fixed ring and a small fixed ring on the side furthest from the large fixed ring, respectively. The other diagonal rod has its ends fixed to a large fixed ring on the other side and a small fixed ring on the side furthest from the large fixed ring, respectively. By adjusting the distance between the two small fixed rings, the cross position of the two diagonal rods changes, causing the connecting slides to slide along the corresponding diagonal rods, thereby changing the distance between the clamping plate and the small fixed ring axis. Both ends of the toothed band are provided with guide slopes, which abut against two inclined rods respectively.

[0010] Preferably, a collar coaxial with the two small fixed rings is provided between them. The collar is fixed to the first input shaft, which passes through the small fixed ring and the large fixed ring, and a fixed plate is fixed to its end. Two lead screws passing through the small fixed rings on both sides are rotatably connected inside the collar. The lead screws are threaded to the small fixed rings. The end of the lead screw away from the first housing passes through the collar and is rotatably connected to it. A motor base is fixed to the side of the fixed plate away from the collar. Two connecting rods are fixed between the motor base and the fixed plate. A motor is fixed on the motor base. The output shaft of the motor is connected to the ends of the two lead screws by a belt drive.

[0011] Preferably, the power transmission component includes an intermediate drive shaft, a toothed pulley, a toothed belt, and a second input shaft. One end of the intermediate drive shaft is fixed inside the drive pulley. Two toothed pulleys are provided, and the toothed pulley is fixed to the other end of the intermediate drive shaft. The second input shaft passes through the cover plate and is rotatably connected to it. The second input shaft is coaxially arranged with the first input shaft. The other toothed pulley is fixed to the end of the second input shaft near the first input shaft. The two toothed pulleys are poweredly connected by a toothed belt.

[0012] Preferably, a fixing block is fixed on the lower side wall of the second housing, a guide post is fixed between the fixing block and the side wall of the second housing, a slider is slidably connected to the guide post, the lower end face of the slider abuts against the lower side wall of the second housing, a second spring is fixed between the slider and the fixing block, a shaft seat is fixed on the upper end face of the slider, and the intermediate transmission shaft passes through the shaft seat and is rotatably connected to it.

[0013] Preferably, a slide rod is fixed to the upper side wall of the second housing, a tension wheel seat is slidably connected to the slide rod, a tension wheel is rotatably connected to the lower end of the tension wheel seat, the tension wheel abuts against the toothed belt, so that the toothed belt is always in a taut state, and a third spring is fixed between the tension wheel seat and the upper side wall of the second housing.

[0014] The beneficial effects of this invention are: 1. The power transmission component transmits power from the gearbox of the wind turbine generator to the first input shaft, thereby driving the first input shaft to rotate, which in turn drives the bevel gear shaft to rotate, and then causes the two one-way wheels to rotate. Through the one-way rotation action of the ratchet mechanism, no matter whether the bevel gear shaft rotates forward or backward, only one of the two reversing bevel gears will rotate, thereby driving the output bevel gear to always rotate in one direction, thus realizing the directional rotation of the pump body's main shaft.

[0015] 2. The motor can adjust the rotation direction of its output shaft according to the rotation speed of the second input shaft, thereby adjusting the distance between the two small fixed rings, and thus adjusting the outer diameter of the multiple clamping plates, thereby changing the transmission ratio between the transmission adjustment mechanism and the transmission pulley, so as to control the speed of the first input shaft to be stable within a certain range. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the power transmission component in this invention; Figure 4 This is a schematic diagram of the transmission ratio adjustment component in this invention; Figure 5 This is the present invention. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the structure of the directional input component in this invention; Figure 7 This is a cross-sectional view of the ratchet mechanism in this invention; Figure 8 This is a schematic diagram of the transmission adjustment mechanism in this invention; Figure 9 This is a cross-sectional schematic diagram of the transmission ratio adjustment component in this invention; Figure 10 This is a schematic diagram of the transmission component in this invention; Figure 11 This is a schematic diagram of the card plate in this invention.

[0017] In the picture: 1. Pump body; 5. Transmission adjustment mechanism; 8. Transmission component; 10. Mounting plate; 11. First housing; 12. Output bevel gear; 13. Reversing bevel gear; 131. Limiting groove; 132. Mounting groove; 14. Input bevel gear; 15. First input shaft; 16. Intermediate bevel gear; 17. Rod seat; 18. Positioning bushing; 19. Bevel gear shaft; 20. Second housing; 21. Cover plate; 30. Second input shaft; 31. Intermediate transmission shaft; 32. Toothed belt; 33. Toothed pulley; 34. Slider; 35. Guide post; 36. Shaft seat; 37. 38. Fixed block; 40. Second spring; 41. Transmission pulley; 42. Transmission belt; 43. Toothed belt; 44. Guide slope; 55. Large fixed ring; 56. Lead screw; 57. Small fixed ring; 58. Fixed disc; 59. Motor base; 50. Motor; 51. Connecting rod; 62. Collar; 63. Tensioning wheel; 64. Tensioning wheel seat; 65. Third spring; 70. Slide rod; 71. One-way wheel; 72. Pawl; 73. Receiving groove; 84. First spring; 85. Clamping plate; 86. Diagonal rod; 87. Through groove; 88. Connecting slide; 89. Clamping groove. Detailed Implementation

[0018] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely for the purpose of simplifying the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0019] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is only used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of a directional output internal gear pump are described in detail below: An embodiment of the present invention: Reference Figures 1-11 The present invention provides a directional output internal meshing gear pump, comprising: Pump body 1; A directional input assembly, fixed to the pump body 1 and poweredly connected to the main shaft of the pump body 1, includes a mounting plate 10, an output bevel gear 12, a reversing bevel gear 13, a bevel gear shaft 19, an intermediate bevel gear 16, an input bevel gear 14, and a first input shaft 15. The mounting plate 10 is fixed to the pump body 1. The main shaft of the pump body 1 passes through the mounting plate 10 and is fixedly connected to the output bevel gear 12 by a key. Two rod seats 17 symmetrically arranged on both sides of the output bevel gear 12 are fixed on the mounting plate 10. The bevel gear shaft 19 passes through the two rod seats 17 and is rotatably connected to them. Two reversing bevel gears 13 are provided and rotatably connected to the bevel gear shaft 19. Simultaneously meshing with the output bevel gear 12, two ratchet mechanisms are fixed on the bevel gear shaft 19 and can drive two reversing bevel gears 13 to rotate in opposite directions respectively. The intermediate bevel gear 16 is fixed on the bevel gear shaft 19 and located between the two reversing bevel gears 13. Two positioning bushings 18 are sleeved on the bevel gear shaft 19. The two positioning bushings 18 are respectively set between the intermediate bevel gear 16 and the two reversing bevel gears 13 and abut against each other, thereby increasing the positioning accuracy and stability of the intermediate bevel gear 16. The first input shaft 15 is coaxially arranged with the main shaft of the pump body 1. The input bevel gear 14 is fixed on the first input shaft 15 and meshes with the intermediate bevel gear 16. The first housing 11 is fixed on the mounting plate 10, the directional input component is disposed inside the first housing 11, and the first input shaft 15 is rotatably connected to the front side wall of the first housing 11; A power transmission assembly is fixed to the first housing 11 and is used to connect the gearbox output shaft and the first input shaft 15 in the wind turbine generator set.

[0020] Specifically, the transmission ratio adjustment component is poweredly connected to the first input shaft 15. The power input of the power transmission component is provided by the output shaft of the gearbox in the wind turbine generator set, and the power is transmitted to the first input shaft 15 through the transmission ratio adjustment component. The power transmission component can adaptively adjust the transmission ratio of the transmission ratio adjustment component according to the rotational speed of the output shaft of the gearbox.

[0021] Specifically, the ratchet mechanism includes a one-way wheel 70, a pawl 71, and a first spring 73. The reversing bevel gear 13 has a mounting groove 132 recessed towards the side closest to the intermediate bevel gear 16 on its end face away from the intermediate bevel gear 16. The one-way wheel 70 is disposed within the mounting groove 132 and fixed to the bevel gear shaft 19, rotating together with the bevel gear shaft 19. Multiple circumferentially evenly distributed limiting grooves 131 are formed within the side wall of the mounting groove 132. Multiple circumferentially evenly distributed limiting grooves 131 recessed towards the side closest to the bevel gear shaft 19 are formed on the outer periphery of the one-way wheel 70. The recessed receiving groove 72 has multiple pawls 71, each rotatably connected to one of the multiple receiving grooves 72. A first spring 73 is fixed between the receiving groove 72 and the side wall of the receiving groove 72 near the bevel gear shaft 19. The elastic force of the first spring 73 causes the end of the receiving groove 72 to engage in the limiting groove 131. When the receiving groove 72 is located in the limiting groove 131, one side wall of the limiting groove 131 is perpendicular to the end of the pawl 71, and the other side wall of the limiting groove 131 is parallel to the end of the pawl 71. The pawls 71 on the two one-way wheels 70 face opposite directions.

[0022] Specifically, the transmission ratio adjustment component includes a transmission pulley 40, a transmission belt 41, a second housing 20, and a transmission adjustment mechanism 5. The transmission pulley 40 and the transmission adjustment mechanism 5 are connected by the transmission belt 41. Multiple teeth 411 are fixed on the inner side of the transmission belt 41 and are evenly distributed along its path. Multiple evenly distributed grooves are opened on the outer periphery of the transmission pulley 40. When the transmission belt 41 abuts against the outer periphery of the transmission pulley 40, the teeth 411 are engaged in the grooves.

[0023] Specifically, the transmission adjustment mechanism 5 includes a small fixed ring 52, a large fixed ring 50, and a transmission component 8. Two large fixed rings 50 are symmetrically arranged, and two small fixed rings 52 are symmetrically arranged and located between the two large fixed rings 50. The diameter of the small fixed rings 52 is smaller than the diameter of the large fixed rings 50. Multiple transmission components 8 are arranged and are evenly distributed circumferentially around the axis of the large fixed rings 50. The transmission component 8 includes a clamping plate 81 and a diagonal rod 82. The clamping plate 81 has a groove 85 recessed towards the side of the small fixed ring 52 away from the axis. Two centrally symmetrical connecting slides 84 are fixed on the side of the clamping plate 81 near the axis of the small fixed ring 52. A through groove 83 is opened in the connecting slide 84. Two diagonal rods 82 are provided and slidably connected in the two through grooves 83 respectively. The two diagonal rods 82 are arranged in a cross configuration. One diagonal rod 82 is fixed at both ends to the large fixed ring 50 and the small fixed ring 52 away from the large fixed ring 50 respectively. The other diagonal rod 82 is fixed at both ends to the large fixed ring 50 on the other side and the small fixed ring 52 away from the large fixed ring 50 respectively. By adjusting the distance between the two small fixed rings 52, the cross position of the two diagonal rods 82 is changed, thereby causing the connecting slide 84 to slide along the corresponding diagonal rod 82, thus changing the distance between the clamping plate 81 and the axis of the small fixed ring 52. Both ends of the toothed belt 411 are provided with guide slopes 4111 and abut against two inclined rods 82 respectively. The width of the clamping plate 81 is consistent with the spacing between two adjacent transmission belts 41.

[0024] Specifically, a collar 57 coaxial with the two small fixed rings 52 is provided between them. The collar 57 is fixed to the first input shaft 15. The first input shaft 15 passes through the small fixed rings 52 and the large fixed ring 50, and a fixed plate 53 is fixed at its end. Two lead screws 51 passing through the small fixed rings 52 on both sides are rotatably connected inside the collar 57. The lead screws 51 are threaded to the small fixed rings 52. The end of the lead screw 51 away from the first housing 11 passes through the collar 57 and is rotatably connected to it. A motor base 54 is fixed on the side of the fixed plate 53 away from the collar 57. Two connecting rods 56 are fixed between the motor base 54 and the fixed plate 53. A motor 55 is fixed on the motor base 54. The motor 55 is a stepper motor. The output shaft of the motor 55 is connected to the ends of the two lead screws 51 by a belt drive.

[0025] Specifically, the power transmission components include an intermediate drive shaft 31, a toothed pulley 33, a toothed belt 32, and a second input shaft 30. One end of the intermediate drive shaft 31 is fixed inside the drive pulley 40. Two toothed pulleys 33 are provided, and the toothed pulleys 33 are fixed on the other end of the intermediate drive shaft 31. The second input shaft 30 passes through the cover plate 21 and is rotatably connected to it. The second input shaft 30 is coaxially arranged with the first input shaft 15. The other toothed pulley 33 is fixed on the end of the second input shaft 30 near the first input shaft 15. The two toothed pulleys 33 are poweredly connected by the toothed belt 32.

[0026] Specifically, a fixing block 37 is fixed on the lower side wall of the second housing 20, a guide post 35 is fixed between the fixing block 37 and the side wall of the second housing 20, a slider 34 is slidably connected to the guide post 35, the lower end face of the slider 34 abuts against the lower side wall of the second housing 20, a second spring 38 is fixed between the slider 34 and the fixing block 37, a bearing seat 36 is fixed on the upper end face of the slider 34, and an intermediate transmission shaft 31 passes through the bearing seat 36 and is rotatably connected to it.

[0027] Specifically, a slide rod 63 is fixed to the upper side wall of the second housing 20, a tension wheel seat 61 is slidably connected to the slide rod 63, a tension wheel 60 is rotatably connected to the lower end of the tension wheel seat 61, the tension wheel 60 abuts against the toothed belt 32, so that the toothed belt 32 is always in a taut state, and a third spring 62 is fixed between the tension wheel seat 61 and the upper side wall of the second housing 20.

[0028] In use, the wind turbine generator set is equipped with a Hall effect speed sensor for detecting the output shaft speed of the gearbox. The sensor and the motor 55 are connected and controlled by a microcontroller. The Hall effect speed sensor detects the output shaft speed in real time and transmits the signal to the microcontroller.

[0029] The power supply for motor 55 can be transmitted using the principle of brushes. Specifically, a standard cap-type slip ring is selected, and the rotor (rotating part) of the slip ring is connected to the fixed plate 53 through a connector to ensure that the slip ring rotor can rotate synchronously with the motor assembly. The cable leading out from the external power supply is soldered to the terminal block of the slip ring stator, and the cable leading out from motor 55 is soldered to the terminal block of the slip ring rotor.

[0030] The second input shaft 30 is connected to the gearbox output shaft of the wind turbine generator set via a coupling.

[0031] When the blades of the wind turbine rotate, the output shaft of the gearbox rotates, driving the second input shaft 30 to rotate. Through the transmission of the toothed belt 32 and the toothed pulley 33, the intermediate transmission shaft 31 rotates, thereby driving the transmission pulley 40 to rotate. Through the transmission of the transmission belt 41, the transmission adjustment mechanism 5 rotates. Through the engagement of the belt teeth 411 with the grooves 85 and the clamping plates 81 on the outer periphery of the transmission pulley 40, the transmission stability of the transmission belt 41 is improved.

[0032] When the Hall effect speed sensor detects an increase in the output shaft speed of the gearbox, the microcontroller drives the motor 55 to rotate. This rotation is transmitted via a belt, causing the two lead screws 51 to rotate synchronously. Consequently, the two small fixed rings 52 increase in size, while the distance between the two large fixed rings 50 decreases. The two connecting slides 84 then slide obliquely upwards along the two inclined rods 82, causing multiple clamping plates 81 to move simultaneously away from the first input shaft 15 until the arc distance between two adjacent clamping plates 81 on their circumcircle is equal to an integer multiple of the distance between adjacent belt teeth 411. This reduces the transmission ratio between the transmission adjustment mechanism 5 and the transmission pulley 40, thereby reducing the increase in the speed of the first input shaft 15.

[0033] During this process, the transmission pulley 40 moves toward the transmission adjustment mechanism 5, and the intermediate transmission shaft 31 moves accordingly, thereby driving the slider 34 to move toward the transmission adjustment mechanism 5. The second spring 38 is then compressed, and the elastic force of the second spring 38 is used to ensure that the transmission belt 41 always remains taut.

[0034] During the above process, the gap between the two toothed pulleys 33 decreases, and the tensioning pulley 60 moves downward under the elastic force of the third spring 62, so that the toothed belt 32 always remains taut.

[0035] If the Hall effect speed sensor detects a decrease in the output shaft speed of the gearbox, the above motion process will be reversed.

[0036] In summary, by adjusting the transmission ratio between the second input shaft 30 and the first input shaft 15 through the power transmission component, when the speed of the second input shaft 30 fluctuates, the speed fluctuation of the first input shaft 15 is reduced, thereby reducing the impact of the speed fluctuation of the second input shaft 30 on the operation of the pump body 1.

[0037] When the second input shaft 30 drives the first input shaft 15 to rotate, the input bevel gear 14 rotates accordingly, thereby driving the intermediate bevel gear 16 to rotate, which in turn causes the bevel gear shaft 19 to rotate, thereby driving the two one-way wheels 70 to rotate.

[0038] Reference Figure 6 When the bevel gear shaft 19 drives the upper one-way wheel 70 to rotate, the pawl 71 on it pushes the side wall perpendicular to the pawl 71 in the limiting groove 131 to rotate, thereby driving the reversing bevel gear 13 to rotate, which in turn drives the output bevel gear 12 to rotate, thus causing the main shaft of the pump body 1 to rotate.

[0039] The lower one-way wheel 70 rotates in the same direction as the upper one-way wheel 70. Since the pawls 71 on the two one-way wheels 70 face opposite directions, the pawls 71 on the lower one-way wheel 70 move away from the side wall perpendicular to the pawl 71 in the limiting groove 131. As a result, the lower one-way wheel 70 and the lower reversing bevel gear 13 rotate freely. At the same time, the upper reversing bevel gear 13 drives the output bevel gear 12 to rotate, and the output bevel gear 12 drives the lower reversing bevel gear 13 to rotate, and the rotation direction is opposite to that of the lower one-way wheel 70.

[0040] In this way, it is ensured that the rotation direction of the pump body 1 main shaft remains consistent regardless of the rotation direction of the first input shaft 15.

[0041] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of the present invention. All such modifications fall within the protection scope of the present invention. The protection scheme of the present invention is defined by the appended claims.

Claims

1. A directional output internal gear pump, characterized in that, include: Pump body (1); A directional input assembly is fixed to the pump body (1) and is poweredly connected to the main shaft of the pump body (1). The directional input assembly includes a mounting plate (10), an output bevel gear (12), a reversing bevel gear (13), a bevel gear shaft (19), an intermediate bevel gear (16), an input bevel gear (14), and a first input shaft (15). The mounting plate (10) is fixed to the pump body (1). The main shaft of the pump body (1) passes through the mounting plate (10) and is fixedly connected to the output bevel gear (12). Two rod seats (17) symmetrically arranged on both sides of the output bevel gear (12) are fixed on the mounting plate (10). The bevel gear shaft (19) Two reversing bevel gears (13) are provided and rotatably connected to the two rod seats (17). They are rotatably connected to the bevel gear shaft (19) and simultaneously mesh with the output bevel gear (12). Two ratchet mechanisms are fixed on the bevel gear shaft (19) and can drive the two reversing bevel gears (13) to rotate in opposite directions respectively. The intermediate bevel gear (16) is fixed on the bevel gear shaft (19) and located between the two reversing bevel gears (13). The first input shaft (15) is coaxially arranged with the main shaft of the pump body (1). The input bevel gear (14) is fixed on the first input shaft (15) and meshes with the intermediate bevel gear (16). The first housing (11) is fixed on the mounting plate (10), the directional input component is disposed inside the first housing (11), and the first input shaft (15) is rotatably connected to the front side wall of the first housing (11); The power transmission assembly is fixed to the first housing (11) and is used to connect the gearbox output shaft and the first input shaft (15) in the wind turbine generator set.

2. The directional output internal gear pump according to claim 1, characterized in that, The power transmission component includes a transmission ratio adjustment component and a power transmission component. The transmission ratio adjustment component is poweredly connected to the first input shaft (15). The power input of the power transmission component is provided by the output shaft of the gearbox in the wind turbine generator set, and the power is transmitted to the first input shaft (15) through the transmission ratio adjustment component. The power transmission component can adaptively adjust the transmission ratio of the transmission ratio adjustment component according to the rotational speed of the output shaft of the gearbox.

3. The directional output internal gear pump according to claim 1, characterized in that, The ratchet mechanism includes a one-way wheel (70), a pawl (71), and a first spring (73). The reversing bevel gear (13) has a mounting groove (132) recessed towards the side of the intermediate bevel gear (16) on its end face away from the intermediate bevel gear (16). The one-way wheel (70) is disposed within the mounting groove (132) and fixed to the bevel gear shaft (19), rotating together with the bevel gear shaft (19). Multiple circumferentially evenly distributed limiting grooves (131) are provided within the side wall of the mounting groove (132). Multiple circumferentially evenly distributed receiving grooves (72) recessed towards the side of the bevel gear shaft (19) are provided on the outer periphery of the one-way wheel (70). The pawl (71) is provided with multiple pawls and is rotatably connected to multiple receiving grooves (72). A first spring (73) is fixed between the receiving groove (72) and the side wall of the receiving groove (72) near the bevel gear shaft (19). Through the elastic force of the first spring (73), the end of the receiving groove (72) is inserted into the limiting groove (131). When the receiving groove (72) is located in the limiting groove (131), one side wall of the limiting groove (131) is perpendicular to the end of the pawl (71), and the other side wall of the limiting groove (131) is parallel to the end of the pawl (71). The pawls (71) on the two one-way wheels (70) face opposite directions.

4. A directional output internal gear pump according to claim 2, characterized in that, The transmission ratio adjustment component includes a transmission pulley (40), a transmission belt (41), a second housing (20), and a transmission adjustment mechanism (5). The transmission pulley (40) and the transmission adjustment mechanism (5) are connected by the transmission belt (41). Multiple teeth (411) are fixed on the inner side of the transmission belt (41) and are evenly distributed along its path. Multiple evenly distributed grooves are opened on the outer periphery of the transmission pulley (40). When the transmission belt (41) abuts against the outer periphery of the transmission pulley (40), the teeth (411) are engaged in the grooves.

5. A directional output internal gear pump according to claim 4, characterized in that, The transmission adjustment mechanism (5) includes a small fixed ring (52), a large fixed ring (50), and a transmission component (8). There are two large fixed rings (50) symmetrically arranged, and two small fixed rings (52) symmetrically arranged and located between the two large fixed rings (50). The diameter of the small fixed ring (52) is smaller than the diameter of the large fixed ring (50). There are multiple transmission components (8) and they are evenly distributed circumferentially with the axis of the large fixed ring (50) as the center. The transmission component (8) includes a retaining plate (81) and a diagonal rod (82). The retaining plate (81) has a groove (85) recessed towards the axis of the small fixed ring (52) on one side away from the axis. Two centrally symmetrical connecting slides (84) are fixed to the side of the retaining plate (81) near the axis of the small fixed ring (52). A through groove (83) is provided in each connecting slide (84). Two diagonal rods (82) are provided and slidably connected to the two through grooves (83). The two diagonal rods (82) are arranged in a crisscross pattern. One of the diagonal rods... The two ends of the rod (82) are respectively fixed to the large fixed ring (50) and the small fixed ring (52) on the side away from the large fixed ring (50). The two ends of the other inclined rod (82) are respectively fixed to the large fixed ring (50) on the other side and the small fixed ring (52) on the side away from the large fixed ring (50). By adjusting the distance between the two small fixed rings (52), the intersection position of the two inclined rods (82) is changed, so that the connecting slide (84) slides along the corresponding inclined rod (82), thereby changing the distance between the axis of the card plate (81) and the small fixed ring (52). Both ends of the toothed band (411) are provided with guide slopes (4111) and respectively abut against two inclined rods (82).

6. A directional output internal gear pump according to claim 5, characterized in that, A collar (57) is provided between two small fixed rings (52) and is coaxial with them. The collar (57) is fixed on the first input shaft (15). The first input shaft (15) passes through the small fixed ring (52) and the large fixed ring (50) and is fixed at its end with a fixed plate (53). Two lead screws (51) that pass through the small fixed rings (52) on both sides are rotatably connected inside the collar (57). The lead screws (51) are threaded to the small fixed rings (52). The end of the lead screw (51) away from the first housing (11) passes through the collar (57) and is rotatably connected to it. A motor base (54) is fixed on the side of the fixed plate (53) away from the collar (57). Two connecting rods (56) are fixed between the motor base (54) and the fixed plate (53). A motor (55) is fixed on the motor base (54). The output shaft of the motor (55) is connected to the ends of the two lead screws (51) by a belt drive.

7. A directional output internal gear pump according to claim 4, characterized in that, The power transmission component includes an intermediate drive shaft (31), a toothed pulley (33), a toothed belt (32), and a second input shaft (30). One end of the intermediate drive shaft (31) is fixed inside the drive pulley (40). There are two toothed pulleys (33), which are fixed to the other end of the intermediate drive shaft (31). The second input shaft (30) passes through the cover plate (21) and is rotatably connected to it. The second input shaft (30) is coaxially arranged with the first input shaft (15). The other toothed pulley (33) is fixed to the end of the second input shaft (30) near the first input shaft (15). The two toothed pulleys (33) are poweredly connected by the toothed belt (32).

8. A directional output internal gear pump according to claim 7, characterized in that, A fixing block (37) is fixed on the lower side wall of the second housing (20). A guide post (35) is fixed between the fixing block (37) and the side wall of the second housing (20). A slider (34) is slidably connected to the guide post (35). The lower end face of the slider (34) abuts against the lower side wall of the second housing (20). A second spring (38) is fixed between the slider (34) and the fixing block (37). A bearing seat (36) is fixed on the upper end face of the slider (34). The intermediate transmission shaft (31) passes through the bearing seat (36) and is rotatably connected to it.

9. A directional output internal gear pump according to claim 8, characterized in that, A slide rod (63) is fixed on the upper side wall of the second housing (20). A tension wheel seat (61) is slidably connected to the slide rod (63). A tension wheel (60) is rotatably connected to the lower end of the tension wheel seat (61). The tension wheel (60) abuts against the toothed belt (32), so that the toothed belt (32) is always in a taut state. A third spring (62) is fixed between the tension wheel seat (61) and the upper side wall of the second housing (20).

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