Multi-piece laminated type lubricating pinion

Abstract

The utility model discloses a multi-piece overlapped type lubricating pinion which comprises a plurality of gear pieces, and the gear pieces are overlapped to form a gear. When the two opposite gear pieces are attached and stacked, the two oil grooves form a closed oil channel, each gear tooth corresponds to two oil channels, and the two oil channels penetrate through different tooth surfaces of the gear tooth respectively. The gear sheet is provided with bulges at oil outlets of the oil channels; the outer wall of the shaft tube is in smooth fit and rotary fit with the circular through hole of the gear sheet; an oil cavity and an oil hole penetrating through the oil cavity are formed in the center of the shaft tube along the central axis, and when the shaft tube is sleeved with the gear piece, the oil hole corresponds to the oil channel oil inlet in position. The pinion composed of the gear pieces is not directly attached to the gear to be lubricated through the tooth surface, lubricating grease flows out through the protrusions and then is guided to flow towards the two sides of the gear to be lubricated in the thickness direction, and the lubricating gear is fully covered. When the difference is small, the gear gaskets are thin, and the thickness specification can be finely adjusted by adjusting the number of the gear gaskets.

Description

A multi-plate stacked lubricated pinion Technical Field

[0001] This utility model belongs to the field of wind power generation lubrication technology, specifically relating to a multi-plate stacked lubrication pinion. Background Technology

[0002] Gear lubrication in wind turbine generator sets plays a crucial role, far exceeding that of general industrial gear lubrication. This is mainly because wind power installation costs are high, and the equipment is exposed to harsh outdoor environments for extended periods, resulting in high maintenance and replacement costs.

[0003] When used, the lubrication gear of the wind turbine is installed near the gear to be lubricated and meshes with it. When the gear to be lubricated rotates, it drives the lubrication gear to rotate, and grease can flow out from the tooth surface of the lubrication gear. When the lubrication gear meshes with the gear to be lubricated, the grease flowing out from the lubrication gear can be adhered to the tooth surface of the gear to be lubricated, so that the gear to be lubricated can be lubricated by the grease during subsequent meshing and transmission. At the same time, it can also play a role in preventing corrosion and rust of the gear to be lubricated and other gears meshing with it.

[0004] Existing lubrication gears are mostly solid, one-piece structures, which consume a lot of materials and are heavy. Furthermore, the grease is easily lost from the tooth surface of the lubrication gear under the squeezing action of meshing. Based on the above problems, the existing technology has disclosed lubrication pinions composed of gear plates. In use, a certain number of lubrication pinion plates are selected and connected together by bolts, and then fitted onto a shaft tube connected to the oil supply pipe, so that its tooth width is close to the tooth width of the gear to be lubricated. Each lubrication pinion plate has an oil groove on one side, and every two pinion plates face each other to form an oil channel. The shaft tube has oil holes spaced apart for each group of gear plate oil channels, and oil is supplied and lubricated through the spaced oil holes. The other side of the gear plate is hollowed out to form a hollow shell structure to reduce weight.

[0005] However, the above technical solutions have the following technical problems: 1. The small gear composed of gear plates directly contacts the gear to be lubricated through its tooth surface, and there is no gap between the lubricating small gear and the tooth surface of the gear to be lubricated. When they are in contact, the oil outlet is easily blocked; 2. The gear plate itself has a hollow design, and an oil groove needs to be opened, so it has a certain thickness. Adding or removing gear plates will cause a large change in thickness. When the difference is small, it is difficult to adjust by adjusting the thickness of the gear plate; 3. The gears to be lubricated are of various types, and the lubricating gears need to be arranged in various ways according to different situations, such as vertical, oblique and horizontal. During the oblique and horizontal lubrication process, when the oil pressure is adjusted according to the lubrication, when the oil pressure is low, oil may come out of the oil hole of the lower gear plate, while the oil hole of the upper gear plate may have limited or no oil, resulting in insufficient lubrication of the gear to be lubricated. Summary of the Invention

[0006] This utility model provides a multi-plate stacked lubrication pinion, in which the pinion composed of gear plates does not directly contact the gear to be lubricated through the tooth surface. Instead, the grease flows out through the protrusions and is guided to flow to both sides of the thickness direction of the gear to be lubricated, thus fully covering the gear to be lubricated. When the difference is small, the thickness of the gear shims is relatively thin. The thickness can be finely adjusted by adjusting the number of gear shims, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-plate stacked lubricating pinion, comprising multiple gear plates, the multiple gear plates having an overall identical shape, which are stacked to form a gear;

[0008] The gear plate includes a circular body and multiple teeth evenly distributed on the outer edge of the circular body; each gear plate has a circular through hole at its center;

[0009] Two gears form a group, and the mating surfaces of the two gears are designed with corresponding oil grooves. When two opposing gears are mated and stacked, the two oil grooves form a closed oil passage. One end of the oil passage passes through a circular through hole, and the other end passes through one side of the tooth surface.

[0010] Each gear tooth corresponds to two oil passages, and the two oil passages respectively connect to different tooth surfaces of the gear tooth;

[0011] The gear blades are all provided with protrusions at the oil outlet of the oil passage, so that a gap is formed between the lubricating pinion and the tooth surface of the gear to be lubricated and the oil outlet of the oil passage.

[0012] It also includes a shaft tube, which passes through the circular through holes of multiple stacked gear pieces, and the outer wall of the shaft tube is smoothly fitted and rotated with the circular through holes of the gear pieces;

[0013] The shaft tube has an oil cavity and an oil hole that penetrates the oil cavity along the central axis. When the gear plate is fitted on the shaft tube, the position of the oil hole corresponds to the oil inlet of the oil passage.

[0014] It also includes a positioning mechanism; the positioning mechanism is used to position multiple gear pieces on the shaft tube;

[0015] It also includes an oil supply mechanism, which includes oil pipe joints and sealing plugs located at both ends of the shaft tube.

[0016] Preferably, the positioning mechanism includes a mounting bracket. One end plate of the mounting bracket fixes the shaft tube. The plate has a mounting hole for the exposed end of the shaft tube. The exposed end of the shaft tube has threads on its outer wall, and then fastening bolts are installed to fix it. The fastening bolt also has a set screw hole through its side, and then a set screw is installed to fix it. The other end plate of the mounting bracket has a strip hole and a mounting screw. The other end of the shaft tube also has a shaft retaining ring, which, together with the washer on the shaft tube, positions multiple sets of gear pieces.

[0017] Preferably, the gear plate has a hollow structure, specifically a hollow structure on the back side of the mating surface in the same gear plate assembly; the fastening structure includes a screw and a locking nut, and each gear plate has a corresponding hole through which the screw passes, the inner wall of the hole is just in contact with the outer wall of the screw, so that the screw is fixed at the head end by the locking nut after passing through.

[0018] Preferably, the outer wall of the shaft tube is further provided with an elongated groove at the oil hole. The elongated groove is arranged along the rotation direction of the shaft tube and is used to cover the two oil passages on the same tooth of the same set of gear plates.

[0019] Preferably, a gear shim is further provided between the gear plate assemblies. The gear shim has the same shape as the gear plate as the whole, and the thickness of the gear shim is less than the thickness of the gear plate.

[0020] Preferably, the shaft tube is also provided with a sealing ring groove, and a sealing ring is installed in the sealing ring groove. At least two sealing rings are designed, located at both ends of the shaft tube respectively, and covered by a lubrication pinion. All oil passages and oil holes are located inside the sealing rings.

[0021] Preferably, the oil groove end of the gear plate is further provided with an oil-blocking mechanism, and the oil-blocking mechanisms are distributed at intervals on different teeth of the gear plate. Both oil grooves on the same tooth are provided with oil-blocking mechanisms; on the two teeth of two adjacent gear plate assemblies, one is provided with an oil-blocking mechanism and the other is not.

[0022] Preferably, the oil-blocking mechanism includes an oil-blocking plug groove formed on the oil tank. The oil-blocking plug groove has a semi-cylindrical structure and a radius larger than that of the oil tank. The gear plate assemblies in the same group are fitted together to form a cylindrical oil-blocking plug groove, and an oil-blocking plug is installed in the cylindrical oil-blocking plug groove.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. The oil outlets on both sides of the oil passages contact the gear to be lubricated at different times, thus setting up two oil passages. This allows the grease to enter the two oil passages on the same gear tooth one after the other. Then, the two oil passages successively release oil through their respective oil outlets at the corresponding contact times to lubricate the gear to be lubricated.

[0025] 2. The small gear composed of gear plates does not directly contact the gear to be lubricated through its tooth surface. Instead, a gap is formed between the lubricating small gear and the tooth surface of the gear to be lubricated and the oil outlet of the oil passage through the protrusion. This prevents the oil outlet of the oil passage from being blocked when it is in contact with the gear. Two triangular protrusions are set on both sides of the oil outlet of the oil passage so that the grease flows out and is guided to flow to both sides of the thickness direction of the gear to be lubricated, so as to fully cover the gear to be lubricated.

[0026] 3. When the difference is small, the gear shim is thinner. The thickness can be finely adjusted by adjusting the number of gear shims.

[0027] 4. When the oil pressure is low, the design of the oil blocking mechanism allows oil to flow intermittently when the lubricating pinion meshes with the gear to be lubricated. That is, the lower oil holes are blocked and no oil can be produced, but the upper part can still produce oil even when the oil pressure is low, thus ensuring sufficient lubrication.

[0028] 5. By setting long grooves, the connection time between oil passages and oil holes can be increased. That is, when oil passages and oil holes do not correspond and have intersection, oil can be discharged as long as the long groove connects the oil passage. Under the premise of realizing that the two oil passages lubricate the meshing surface in turn, the oil discharge time is greatly extended and the lubrication efficiency is improved. Attached Figure Description

[0029] Figure 1 is a schematic diagram of the oblique three-dimensional structure of this utility model;

[0030] Figure 2 is a schematic diagram of the oblique three-dimensional structure of this utility model;

[0031] Figure 3 is a schematic diagram of the exploded structure of this utility model;

[0032] Figure 4 is a schematic diagram of the cross-sectional structure of this utility model laid flat;

[0033] Figure 5 is a schematic diagram of the oil hole and long groove structure of this utility model;

[0034] Figure 6 is a schematic diagram of the oil tank, oil plug groove, and oil plug structure of this utility model.

[0035] In the diagram: 1. Gear plate; 101. Circular body; 102. Gear tooth; 103. Circular through hole; 104. Oil groove; 1041. Oil outlet of oil passage; 1042. Oil plug groove; 1043. Oil plug; 105. Protrusion; 2. Shaft tube; 201. Oil cavity; 202. Oil hole; 2021. Long groove; 3. Oil pipe joint; 4. Sealing plug; 5. Mounting bracket; 501. Strip hole; 502. Mounting screw; 6. Fastening bolt; 601. Set screw; 7. Shaft retaining ring; 8. Washer; 9. Screw; 10. Locking nut; 11. Hole; 12. Gear washer; 13. Sealing ring. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Example 1, please refer to Figures 1-5. This utility model provides a multi-plate stacked lubrication pinion, including multiple gear plates 1. The multiple gear plates 1 have the same overall shape and are stacked to form a gear. The multi-plate stacking design is used to change the thickness by stacking different numbers of gear plates 1, thereby manufacturing lubrication pinions of various specifications to cope with the contact lubrication of gears in different wind turbine units.

[0038] The gear 1 includes a circular body 101 and a plurality of teeth 102 equally distributed on the outer edge of the circular body 101. The teeth 102 are designed according to the specifications of the gear to be lubricated to ensure meshing and rotational movement. Each gear 1 has a circular through hole 103 at its center. The circular through hole 103 is designed to be used for the gear 1 to be stacked and then fitted onto the shaft, so that it can rotate around the shaft. When the teeth 102 of the gear 1 mesh with the gear to be lubricated, it can rotate accordingly as the gear to be lubricated rotates.

[0039] Two gear plates 1 form a group. The mating surfaces of the two gear plates are designed with corresponding oil grooves 104. That is, each gear plate 1 has an open oil groove 104 designed along the mating surface. When two opposing gear plates are mated and superimposed, the two oil grooves form a closed oil passage. One end of the oil passage passes through the circular through hole 103, and the other end passes through one side of the tooth surface of the gear tooth 102.

[0040] Each gear tooth 102 corresponds to two oil passages, which respectively pass through different tooth surfaces. These passages are used to transport the grease that enters through the circular through-hole 103 to the tooth surfaces on both sides of the gear tooth 102. As the gear to be lubricated rotates, the grease flows out from both sides of the gear tooth 102, continuously rotating and lubricating the gear. Considering that the oil outlets 1041 on both sides of the gear mesh with the gear to be lubricated at different times, two oil passages are provided so that the grease can enter the two oil passages on the same gear tooth 102 one after the other. Then, the two oil passages successively exit through the oil outlets 1041 at their respective contact times to lubricate the gear to be lubricated.

[0041] Gear plate 1 is made of nylon. Nylon gears have excellent self-lubricating properties and a low coefficient of friction, as well as good wear resistance. They also have good vibration absorption and noise reduction performance, making them suitable for applications requiring lightweight, low noise, high stability, and low maintenance.

[0042] Each gear plate 1 has a protrusion 105 at the oil outlet 1041 of the oil passage. The small gear composed of gear plates 1 does not directly contact the gear to be lubricated through its tooth surface. Instead, the protrusion 105 creates a gap between the lubricating small gear, the tooth surface of the gear to be lubricated, and the oil outlet 1041 of the oil passage. This prevents the oil outlet 1041 from being blocked or mostly blocked when in contact, which would hinder the flow of grease and affect lubrication. Alternatively, the structure of the protrusion 105 can be optimized. In this embodiment, two triangular protrusions are set on both sides of the oil outlet 1041. This allows the grease to flow out and be guided to both sides of the thickness direction of the gear to be lubricated, thus fully covering the gear to be lubricated.

[0043] It also includes a shaft tube 2, which is made of 304 stainless steel. The shaft tube 2 passes through the circular through hole 103 of multiple stacked gear pieces 1. The outer wall of the shaft tube 2 is smoothly fitted and rotated with the circular through hole 103 of the gear piece 1. The shaft tube 2 is used to support the multiple stacked gear pieces 1, so that the lubricating pinion formed by the combination of multiple stacked gear pieces 1 can rotate around the shaft tube 2 when the gear to be lubricated rotates.

[0044] An oil cavity 201 is provided along the central axis of the shaft tube 2. The oil cavity 201 is used to axially transport the grease. An oil hole 202 is also provided on the shaft tube 2 to pass through the oil cavity 201. When the gear plate 1 is mounted on the shaft tube 2, the position of the oil hole 202 corresponds to the oil inlet of the oil passage. That is, the oil hole 202 covers the two oil passages of each set of gear plates 1. Furthermore, the two oil passages of the same set of gear plates 1 pass through the circular through hole 103 at one end and approach each other. This can reduce the opening diameter of the oil hole 202 and cover the oil inlet of the oil passage with the premise of a smaller diameter oil hole 202.

[0045] A row of oil holes 202 is opened along the length of the shaft tube 2. The direction of the oil holes 202 corresponds to the meshing lubrication point of the gear to be lubricated, so that when the oil passage of the gear rotates to the oil inlet of the oil passage, the grease enters the oil hole through the oil cavity, then enters the oil passage through the oil hole, and is sprayed out for lubrication through the meshing point of the gear to be lubricated.

[0046] It also includes a positioning mechanism; the positioning mechanism is used to position multiple gear pieces 1 on the shaft tube 2 so that the pinion does not slide off the smoothly fitting shaft tube 2, so that it stably follows the rotation of the gear to be lubricated, and keeps the oil passage and oil hole 202 from deviating at all times.

[0047] It also includes an oil supply mechanism, which includes oil pipe joints 3 and sealing plugs 4 located at both ends of the shaft tube 2. The oil pipe joints 3 are threaded to one end of the shaft tube 2, and the sealing plugs 4 are threaded to the other end of the shaft tube 2 for sealing. The oil pipe joints 3 are used to connect to an external oil supply system, such as using an oil pipe to connect to a 10L lubrication pump. The grease supplied by the lubrication pump enters the oil pipe joints 3 through the oil pipe and enters the oil chamber 201. Since the other end is sealed, it will flow out through the oil hole 202 under oil pressure and enter the oil passage, and then lubricate the gear to be lubricated.

[0048] As an embodiment of this utility model, the positioning mechanism includes a mounting frame 5. The specific shape of the mounting frame 5 is set according to the actual situation. In this embodiment, a Z-shaped plate is selected. One end plate fixes the shaft tube 2. Specifically, the plate is opened to expose the head end of the shaft tube 2. The corresponding end of the shaft tube 2 connected to it has a structure with a diameter slightly smaller than the body. Threads are provided on the outer wall of the exposed head end. Then, fastening bolts 6 are installed to fix it.

[0049] Furthermore, to increase the fastening strength, a set screw hole is also opened through the side of the fastening bolt 6, and then the set screw 601 is installed for fixation;

[0050] The other end of the Z-shaped plate is provided with a strip hole 501 and a mounting screw 502 for flange connection and fixation at the fixed body;

[0051] Furthermore, a shaft retaining ring 7 is provided at the other end of the shaft tube 2, which, together with the washer 8 on the shaft tube 2, positions multiple sets of gear pieces 1.

[0052] As one embodiment of this utility model, the gear plate 1 has a hollow structure, specifically a hollow structure on the back side of the mating surface in the same gear plate assembly. This reduces weight on the one hand and provides installation space for the fastening structure on the other.

[0053] The fastening structure includes a screw 9 and a locking nut 10. Each gear piece 1 has a corresponding hole 11 through which the screw passes. The inner wall of the hole 11 fits perfectly with the outer wall of the screw 9, so that the screw 9 is fixed at the head end by the locking nut 10 after passing through, locking multiple gear pieces 1. This is used to tightly fit each group of gear pieces 1. In conjunction with the positioning mechanism, it can achieve stable and tight fitting of the gear pieces 1 and prevent grease leakage.

[0054] Multiple holes 11 are evenly distributed around the center of the circular body 101. To make better use of space, the holes 11 correspond to each gear tooth 102, which also enhances the locking stability of the pinion in all directions.

[0055] As an embodiment of the present invention, the outer wall of the shaft tube 2 is also provided with a long groove 2021 at the oil hole 202. The long groove 2021 is arranged along the rotation direction of the shaft tube 2. The long groove 2021 is used to cover the two oil passages on the same gear tooth 102 of the same set of gear plates 1.

[0056] Considering that during gear meshing, the oil outlets 1041 on both sides of the oil passages contact the gear to be lubricated at different times, the two oil passages successively release oil through their respective outlets to lubricate the gear to be lubricated at their corresponding contact times. However, if the oil passages and oil holes 202 only correspond to each other, the oil release time is short, that is, oil will only be released when they intersect, and the lubrication efficiency is still not high. By setting the long groove 2021, the connection time between the oil passages and oil holes 202 can be increased. That is, when the oil passages and oil holes do not correspond to each other, oil can be released as long as the long groove 2021 connects the oil passages. Under the premise of realizing that the two oil passages lubricate the meshing surfaces successively, the oil release time is greatly extended and the lubrication efficiency is improved.

[0057] As an embodiment of this utility model, a gear shim 12 is also provided between the gear plate assemblies. The gear shim 12 is consistent with the gear plate 1 in shape. The thickness of the gear shim 12 (usually 5mm) is less than the thickness of the gear plate 1 (usually 20mm). The number of shims 12 is set according to actual needs. It is used to finely adjust the thickness of the lubricated pinion by setting different numbers of gear shims 12. Since the thickness of different gears to be lubricated varies, it is difficult to adjust the thickness of the gear plate 1 when the difference is small (the gear plate 1 itself has a hollow design, plus the need to open the oil groove 104, which has a certain thickness. Adding or removing gear plate 1 will cause a large change in thickness). The gear shim 12 is thinner, and the thickness can be finely adjusted by adjusting the number of gear shims 1. Of course, the shaft tube 2 and the oil hole 202 are adjusted accordingly according to different specifications, so as to manufacture pinions of various specifications by using different numbers of gear shims 12 of the same specification of gear plate 1.

[0058] As an embodiment of this utility model, the shaft tube is also provided with a sealing ring groove, and a sealing ring 13 is installed in the sealing ring groove. At least two sealing rings 13 are designed, located at both ends of the shaft tube 2 respectively, and covered by the lubrication pinion. All oil passages and oil holes 202 are connected to the inner side of the sealing ring 13. The sealing ring 13 ensures the internal sealing, prevents grease leakage, and ensures stable lubrication.

[0059] Example 2, please refer to Figure 6. As an embodiment of this utility model, an oil-blocking mechanism is also provided at the end of the oil groove 104 of the gear plate 1. The oil-blocking mechanisms are distributed at intervals on different teeth 102 of the gear plate 1 (i.e., one adjacent tooth 102 has an oil-blocking mechanism and the other does not). Both oil grooves 104 on the same tooth 102 are provided with oil-blocking mechanisms, which are used to adjust the oil output of different teeth 102 of the gear plate 1.

[0060] Furthermore, on the two gear teeth 102 of two adjacent sets of gear assemblies, one is equipped with an oil-blocking mechanism and the other with no oil-blocking mechanism. When the pinion is placed flat (i.e., the pinion rotates horizontally) or at an angle, the oil pressure will be adjusted according to the lubrication needs during the lubrication process. When the oil pressure is low, due to the limited oil pressure, oil may come out of the lower oil hole, while the upper oil hole may have limited or no oil coming out, resulting in insufficient lubrication of the flat gear to be lubricated, i.e., insufficient lubrication at the top. Therefore, by setting up an oil-blocking mechanism, oil can be released intermittently when the lubricating pinion meshes with the gear to be lubricated. That is, the lower part of the oil hole 202 is blocked and no oil can be released. Even when the oil pressure is low, it can still facilitate the upper part to release oil and achieve sufficient lubrication.

[0061] As one embodiment of this utility model, the oil-blocking mechanism includes an oil-blocking plug groove 1042 formed on the oil groove 104. The oil-blocking plug groove 1042 has a semi-cylindrical structure and its radius is larger than that of the oil groove. The gear plate assemblies of the same group are fitted together to form a cylindrical oil-blocking plug groove 1042, and an oil-blocking plug 1043 is installed in the cylindrical oil-blocking plug groove 1042. The oil-blocking plug 1043 is preferably made of 304 stainless steel and is installed in the oil-blocking plug groove 1042 to form a seal.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-plate stacked lubricated pinion, characterized in that, The gear includes multiple gear pieces (1), which have a uniform shape and are stacked together to form a gear. Each gear piece (1) includes a circular body (101) and multiple teeth (102) evenly distributed on the outer edge of the circular body (101). Each gear piece (1) has a circular through hole (103) at its center. Two gear pieces (1) form a group, and the mating surfaces of the two gear pieces are designed with corresponding oil grooves (104). When two opposing gear pieces are mated and stacked, the two oil grooves form a closed oil passage. One end of the oil passage passes through the circular through hole (103), and the other end passes through one tooth surface of the tooth (102). Each tooth (102) corresponds to two oil passages, and the two oil passages pass through different tooth surfaces of the tooth respectively. (1) A protrusion (105) is provided at the oil outlet (1041) of the oil passage to form a gap between the lubricating pinion and the tooth surface of the gear to be lubricated and the oil outlet (1041); it also includes a shaft tube (2), which passes through the circular through hole (103) of multiple stacked gear pieces (1), and the outer wall of the shaft tube (2) is smoothly fitted and rotated with the circular through hole (103) of the gear piece (1); the shaft tube (2) has an oil cavity (201) and an oil hole (202) through the oil cavity (201) along the central axis. When the gear piece (1) is fitted on the shaft tube (2), the position of the oil hole (202) corresponds to the oil inlet of the oil passage; it also includes a positioning mechanism; the positioning mechanism is used to position multiple gear pieces (1) on the shaft tube (2).

2. The multi-plate stacked lubricated pinion according to claim 1, characterized in that, The positioning mechanism includes a mounting bracket (5). One end plate of the mounting bracket (5) fixes the shaft tube (2). The mounting bracket (5) has a mounting hole for the exposed head end of the shaft tube (2). The shaft tube (2) has a thread on the exposed head end outer wall, and then a fastening bolt (6) is installed to fix it. The fastening bolt (6) also has a set screw hole through the side, and then a set screw (601) is installed to fix it. The other end plate of the mounting bracket (5) has a strip hole (501) and a mounting screw (502). The other end of the shaft tube (2) also has a shaft retaining ring (7), which, together with the washer (8) on the shaft tube (2), positions multiple sets of gear pieces (1).

3. The multi-plate stacked lubricated pinion according to claim 2, characterized in that, The gear piece (1) has a hollow structure, specifically a hollow structure on the back side of the mating surface in the same gear piece assembly; the fastening structure includes a screw (9) and a locking nut (10), and each gear piece (1) has a hole (11) through which the screw passes. The inner wall of the hole (11) fits just with the outer wall of the screw (9), so that the screw (9) is fixed at the head end by the locking nut (10) after passing through.

4. The multi-plate stacked lubricated pinion according to claim 1, characterized in that, The outer wall of the shaft tube (2) is also provided with a long groove (2021) at the oil hole (202). The long groove (2021) is arranged along the rotation direction of the shaft tube (2). The long groove (2021) is used to cover the two oil passages on the same tooth (102) of the same set of gear plates (1).

5. A multi-plate stacked lubricated pinion according to claim 1, characterized in that, A gear shim (12) is also provided between the gear plate assemblies. The gear shim (12) is consistent with the gear plate (1) in shape, and the thickness of the gear shim (12) is less than the thickness of the gear plate (1).

6. The multi-plate stacked lubricated pinion according to claim 1, characterized in that, The shaft tube is also provided with a sealing ring groove, and a sealing ring (13) is installed in the sealing ring groove. At least two sealing rings (13) are designed, located at both ends of the shaft tube (2) respectively, and covered by the lubrication pinion. All oil passages and oil holes (202) are located inside the sealing ring (13).

7. A multi-plate stacked lubricated pinion according to claim 1, characterized in that, The oil groove (104) of the gear plate (1) is also provided with an oil blocking mechanism. The oil blocking mechanism is distributed at intervals on different teeth (102) of the gear plate (1). Both oil grooves (104) on the same tooth (102) are provided with oil blocking mechanisms. On the two teeth (102) of two adjacent gear plate assemblies, one is provided with an oil blocking mechanism and the other is not.

8. A multi-plate stacked lubricated pinion according to claim 7, characterized in that, The oil-blocking mechanism includes an oil-blocking plug groove (1042) opened on the oil tank (104). The oil-blocking plug groove (1042) has a semi-cylindrical structure and its radius is larger than that of the oil tank. The gear plate assemblies of the same group are fitted together to form a cylindrical oil-blocking plug groove (1042), and an oil-blocking plug (1043) is installed in the cylindrical oil-blocking plug groove (1042).

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