Speed ​​increaser

Abstract

This invention provides a highly durable speed increaser that can increase the rotational output input from drive equipment and the like, thereby increasing the rotational output. [Solution] The input section 2 of the speed increaser 1 according to the present invention consists of an inertia wheel body 3 with an input shaft 21 protruding from the outer center of a wheel 4 on which an internal gear 18 is formed, and an input-side cover body 24 that supports the input shaft 21 by penetrating the outside and surrounds the wheel 4 on the inside with a concave shape. The output section 41 consists of a gear body 42 consisting of a main gear 48 of a main gear section 43 connected to an output shaft 44, and a sub-gear 52 that transmits the rotation of the internal gear 18 to the main gear 48, and an output-side cover body 58 on which the gear body 42 is arranged. The clamping disc 68 is configured to substantially cover the gear body 42 between itself and the output-side cover body 58, and a lid portion 71 is formed in the space between the input-side cover body 24 and the output-side cover body 58, which allows for the injection and discharge of lubricating fluid L.

Description

Technical Field

[0001] The present invention relates to a high-durability speed increaser that increases the rotational output input from a driving device or the like to obtain an increased rotational output.

Background Art

[0002] Conventionally, heavy machinery such as hydraulic excavators and bulldozers, which are large machines used in fields such as construction sites, civil engineering, mining, and agriculture, can operate the arms of each part by hydraulic cylinders. However, in order to move the hydraulic cylinders, it is necessary to use a hydraulic pump and a hydraulic motor with a large load.

[0003] In this case, since the driving force of the diesel engine of the heavy machinery alone cannot properly drive the hydraulic pump and the hydraulic motor, a pump speed increaser is inserted between the engine and the hydraulic pump or the like to make the control of the hydraulic cylinder possible.

[0004] Also, in a wind power generation device, a speed increaser is used to increase the rotation speed of a rotor with low rotational speed even with torque and transmit the increased rotational output to a generator.

[0005] As described above, a speed increaser is used to increase the rotational output of a prime mover such as an engine which is an electric motor or an internal combustion engine, or a rotor to obtain a large rotational output. For example, the speed increaser (rotational transmission device) of the hydraulic drive device described in Patent Document 1 includes an input shaft, a rotating body that is connected to the input shaft, functions as a flywheel itself, and has an internal gear formed on its output side, and an intermediate gear meshing with the internal gear and an output shaft gear meshing with the intermediate gear, and a gear mechanism for transmitting the rotation of the rotating body to a drive output shaft provided on the output shaft gear. A convex portion is provided on the outer periphery of the rotating body, and a concave portion surrounding the convex portion is provided on the fixed frame side, or a convex portion is provided on the fixed frame side and a concave portion surrounding the convex portion is provided on the outer periphery of the rotating body, thereby restricting the axial movement of the rotating body.

[0006] According to this technology, the rotational output of an electric motor can be directly connected to a hydraulic pump or hydraulic motor via a speed increaser to drive the hydraulic pump or hydraulic motor, which can then be used as a power source for hydraulically driven machinery such as hydraulic excavators and bulldozers, or as a power source for a generator. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Patent No. 3892840 [Overview of the project] [Problems that the invention aims to solve]

[0008] Indeed, the speed increaser described in Patent Document 1 is excellent in that it has a small number of parts and a simple configuration, and can increase the rotational output input from a drive device, etc., to obtain an increased rotational output.

[0009] However, intermediate gears and output shaft gears rotate at extremely high speeds compared to internal gears, and because they are constantly subjected to large loads at high temperatures, they have a high risk of tooth fracture or tooth surface damage over time.

[0010] This invention has been made in view of the above circumstances, and aims to provide a highly durable speed increaser that can increase the rotational output input from a drive device or the like to obtain an increased rotational output. [Means for solving the problem]

[0011] To achieve the above objectives, the present invention provides the following:

[0012] The invention according to claim 1 is a device formed integrally by arranging an input shaft formed in an input section and an output shaft formed in an output section opposite each other so that their respective axes lie on the same axis, and by distributing a clamping disc inside, wherein the input section consists of an inertia wheel body in which the input shaft protrudes from the center of the outer side of a wheel having an internal gear formed on an inner surface which is concave on the inside, and an input-side cover body which supports the input shaft by penetrating it to the outside and surrounds the wheel on the inside which is concave, and the output section consists of a main gear of a main gear section to which the output shaft is connected, and the transmission of the rotation of the internal gear to the main gear The present invention provides a speed-increasing device comprising: a gear body consisting of a sub-gear reaching the main gear; an output-side cover body that supports the output shaft through the main gear on the inside and the output shaft on the outside, and secures one end of the sub-gear shaft of the sub-gear on the inside to accommodate the gear body; the clamping disc is formed in the shape of a disc with a diameter smaller than the inner diameter of the internal gear, secures the other end of the sub-gear shaft of the sub-gear to the gear body, and is configured to substantially cover the gear body between itself and the output-side cover body; and a lid portion is formed in the space between the input-side cover body and the output-side cover body that allows for the injection and discharge of lubricating fluid.

[0013] The invention according to claim 2 provides a speed-increasing device as described in claim 1, characterized in that the auxiliary gears are arranged radially in three directions at equal angles around the main gear, and there are two or more auxiliary gears in each direction.

[0014] The invention according to claim 3 is characterized in that a guide portion is formed between the clamping disc and the output side cover body to guide the lubricating fluid, which is inclined toward the auxiliary gear, and is provided for the speed increase device according to claim 1 or 2.

[0015] The invention according to claim 4 provides a speed-increasing device according to claim 1 or 2, characterized in that a concave stirring section is formed on the inner bottom surface of the wheel.

[0016] The invention according to claim 5 provides a speed-increasing device according to claim 1 or 2, characterized in that a guide portion is formed between the clamping disc and the output-side cover body to guide the lubricating fluid inclined toward the auxiliary gear, and a concave stirring portion is formed on the inner bottom surface of the wheel. [Effects of the Invention]

[0017] According to the invention described in claim 1, an input shaft formed in an input section and an output shaft formed in an output section are arranged opposite each other so that their axes lie on the same axis, and a clamping disc is disposed inside to form an integral device, the input section consists of an inertia wheel body in which an internal gear is formed on an inner surface that is concave on the inside, with an input shaft protruding from the center of the outside of the wheel, and an input side cover body that supports the input shaft by penetrating it to the outside and surrounds the wheel on the inside which it is concave, the output section consists of a gear body consisting of a main gear of a main gear section connected to the output shaft, and a secondary gear that transmits the rotation of the internal gear to the main gear, and a secondary gear that supports the output shaft by penetrating it to the outside with the main gear on the inside and the secondary teeth of the secondary gear on the inside The gear assembly consists of an output-side cover body that secures one end of the axle and accommodates the gear body, and a clamping disc formed in the shape of a disc with a diameter smaller than the inner diameter of the internal gear, which secures the other end of the auxiliary gear shaft of the auxiliary gear and is configured to substantially cover the gear body between itself and the output-side cover body, and a lid portion that allows lubricant to be injected and discharged into the space between the input-side cover body and the output-side cover body. As a result, it is possible to permanently prevent breakage of the teeth and damage to the tooth surfaces of each gear in the gear assembly, which is constantly subjected to large loads at high rotational speeds and high temperatures, and the clamping disc significantly reduces the effect of resistance from the lubricant on the rotational force of each gear in the gear assembly, thus maintaining high durability while maintaining high rotational output.

[0018] According to the invention described in claim 2, the auxiliary gears are arranged radially in three directions at equal angles around the main gear, and each direction has two or more auxiliary gears. This makes it easy to increase the diameter of the internal gear in order to obtain high rotational output.

[0019] According to the invention described in claim 3, by forming a guide portion between the clamping disc and the output-side cover body that guides lubricating fluid toward the sub-gear, when the speed increase device is installed with the axis of the input / output shaft in the horizontal direction, the lubricating fluid that adheres to the rotating internal gear and falls from above can be efficiently applied to the substantially upper half of the gear that is not immersed in the lubricating fluid. This permanently prevents breakage of the gear teeth and damage to the tooth surfaces, and maintains high durability.

[0020] According to the invention described in claim 4, by forming a concave stirring section on the inner bottom surface of the wheel, when the speed increase device is installed with the axis of the input / output shaft in the horizontal direction, the lubricating fluid in the gap between the clamping disc and the inner bottom surface of the wheel is stirred for the approximately upper half of the gear that is not immersed in the lubricating fluid. This makes it easier for the lubricating fluid to move upward when the internal gear rotates, increasing the amount of lubricating fluid adhering to the internal gear. This increases the amount of lubricating fluid falling from above that adheres to the approximately upper half of the gear, permanently preventing tooth breakage and tooth surface damage, and maintaining high durability.

[0021] According to the invention described in claim 5, a guide portion is formed between the clamping disc and the output-side cover body to guide the lubricating fluid toward the auxiliary gear, and a concave stirring portion is formed on the inner bottom surface of the wheel. As a result, when the speed increase device is installed with the axis of the input / output shafts in the horizontal direction, the lubricating fluid that adheres to the rotating internal gear and falls from above can be efficiently applied to the approximately upper half of the gear that is not immersed in the lubricating fluid. Furthermore, by stirring the lubricating fluid in the gap between the clamping disc and the inner bottom surface of the wheel, the lubricating fluid moves more easily upward when the internal gear rotates, increasing the amount of lubricating fluid that adheres to the internal gear and increasing the amount of lubricating fluid that falls from above and adheres to the approximately upper half of the gear. This further permanently prevents gear tooth breakage and tooth surface damage, and maintains high durability. [Brief explanation of the drawing]

[0022] [Figure 1] This is a perspective view of the output side of the speed increaser according to this embodiment. [Figure 2]It is an exploded perspective view of the speed increasing device according to the present embodiment as seen from the input side. [Figure 3] It is an exploded perspective view of the speed increasing device according to the present embodiment as seen from the output side. [Figure 4] It is a simplified perspective front view as seen with the output side as the front. [Figure 5] It is a cross-sectional view taken along line A-A in FIG. 4. [Figure 6] It is an explanatory front view showing the inside of the speed increasing device filled with lubricating fluid. [Figure 7] It is an internal explanatory front view showing that a guiding part is formed inside the speed increasing device. [Figure 8] It is an internal explanatory perspective view showing that a guiding part is formed inside the speed increasing device. [Figure 9] It is an internal explanatory front view showing that a guiding part is formed inside the speed increasing device. [Figure 10] It is an internal explanatory perspective view showing that a guiding part is formed inside the speed increasing device. [Figure 11] It is an explanatory perspective view showing that a stirring part is formed on the inner bottom surface of the wheel.

Mode for Carrying Out the Invention

[0023] The gist of the speed increaser according to the present invention is a device formed integrally by arranging an input shaft formed in an input section and an output shaft formed in an output section opposite each other so that their respective axes lie on the same axis, and by arranging a clamping disc inside, the input section consists of an inertia wheel body in which an internal gear is formed on the inner surface which is concave on the inside, with the input shaft protruding from the center of the outside of the wheel, and an input side cover body which supports the input shaft by penetrating it to the outside and surrounds the wheel on the inside which is concave, and the output section consists of a main gear of a main gear section to which the output shaft is connected, and The device consists of a gear body comprising a secondary gear that transmits the rotation of a toothed gear to a main gear, and an output-side cover body that supports the output shaft passing through to the outside with the main gear on the inside and fixing one end of the secondary gear shaft of the secondary gear on the inside to accommodate the gear body. The clamping disc is formed in the shape of a disc with a diameter smaller than the inner diameter of the internal toothed gear, and is configured to fix the other end of the secondary gear shaft of the secondary gear and substantially cover the gear body between itself and the output-side cover body. A lid portion is formed in the space between the input-side cover body and the output-side cover body that allows for the injection and discharge of lubricating fluid. In other words, the aim is to provide a highly durable speed-increasing device that can increase the rotational output input from a drive device or the like to obtain an increased rotational output.

[0024] Hereinafter, an embodiment of the speed-increasing device 1 according to the present invention will be described with reference to the drawings. In this description, structures and parts that are identical or symmetrical on the left and right sides will, in principle, be denoted by the same reference numerals, and only one side will be described, while the other side will be omitted as appropriate.

[0025] For the sake of explanation, the side from which the output shaft 44 on the output side is visible, as shown in Figure 1, will be referred to as the front, and the side from which the input shaft 21 is visible will be referred to as the back.

[0026] As shown in Figures 1 to 3, the speed increase device 1 according to an embodiment of the present invention is a device formed integrally by arranging an input shaft 21 formed in the input section 2 and an output shaft 44 formed in the output section 41 opposite each other so that their respective axes lie on the same axis, and by distributing a clamping disc 68 inside. The input section 2 consists of an inertia wheel body 3 with an input shaft 21 protruding from the center of the outer side of a wheel 4 having an internal gear 18 formed on its inner circumferential surface which is concave on the inside, and an input side cover body 24 that penetrates the input shaft 21 to the outside and supports it, and surrounds the wheel 4 on the inside which is concave. The output section 41 consists of a main gear 48 of a main gear section 43 to which the output shaft 44 is connected. The gear body 42 consists of an internal gear 18 and a sub-gear 52 that transmits the rotation of the internal gear 18 to the main gear 48, and an output-side cover body 58 that supports the gear body 42 by passing the output shaft 44 through to the outside with the main gear 48 on the inside and fixing one end 53a of the sub-gear shaft 53 of the sub-gear 52 on the inside, and the clamping disc 68 is formed in the shape of a disc with a diameter smaller than the inner diameter of the internal gear 18, and is configured to fix the other end 53b of the sub-gear shaft 53 of the sub-gear 52 and substantially cover the gear body 42 between the output-side cover body 58, and a lid portion 71 is formed in the space E between the input-side cover body 24 and the output-side cover body 58 so that lubricating fluid L can be injected and discharged.

[0027] Furthermore, the auxiliary gears 52 are arranged radially in three directions at equal angles around the main gear 48, and each direction has at least two auxiliary gears 52.

[0028] Furthermore, as shown in Figures 7 and 9, a guide portion 69 is formed between the clamping disc 68 and the output side cover body 58, which is inclined toward the auxiliary gear 52 and guides the lubricating fluid L.

[0029] Furthermore, as shown in Figure 11, a concave stirring section 7 is formed on the inner bottom surface 6 of the wheel 4.

[0030] In other words, in this embodiment of the rotation mechanism, as shown in Figure 4, the internal gear 18 of the inertia wheel body 3, which rotates on the outside and is connected to the input shaft 21, meshes with the three outermost sub-gears 52a, the outermost sub-gears 52a mesh with the three intermediate sub-gears 52b, and furthermore, the intermediate sub-gears 52b mesh with the main gear 48 located in the center, thereby causing the output shaft 44 to rotate at high speed.

[0031] Furthermore, the clamping disc 68 can significantly reduce the effect of the resistance caused by the lubricating fluid L filled inside on the rotational force of each gear 48, 52a, and 52b of the gear body 42.

[0032] In this invention, the lubricating fluid L mainly refers to lubricating oil, but any liquid that functions as a lubricant other than oil is acceptable. Furthermore, in this embodiment, as shown in Figure 6, the description assumes that the lubricating fluid L is filled inside to a degree lower than the main gear 48, but the amount of lubricating fluid L to be filled is not particularly limited.

[0033] Furthermore, in this embodiment, the lid portion 71 that allows for the injection and discharge of lubricating fluid L is composed of two parts: an injection port lid portion 71a and an discharge port lid portion 71b, which consist of a female screw that penetrates from the output side cover body 58 to the inside and a male screw that seals it. However, the position, number, shape, etc. of the lid portion 71 are not limited to this embodiment, and various modifications and changes are possible within the scope of the gist of the present invention.

[0034] Furthermore, the lid portion 71 is omitted in the following explanation and diagrams.

[0035] The configuration of each part of the speed increaser 1 will be described in detail below using diagrams.

[0036] As shown in Figures 3 and 5, the input section 2 of the speed increaser 1 consists of an inertia wheel body 3 and an input-side cover body 24. The inertia wheel body 3 consists of a wheel 4 and an input shaft 21. The input-side cover body 24 supports the input shaft 21 by penetrating it to the outside and surrounds the wheel 4 with its concave inner surface, and is connected to an output-side cover body 58, which will be described later.

[0037] The wheel 4 consists of a wheel base 5 and an internal gear 18. The wheel base 5 is made of metal and has a circular shape when viewed from the front, with an input shaft mounting hole 14 drilled in the center and a concave inner surface. Eight evenly spaced female threads 16a are formed on the surface of the first convex step portion 15, which is an annular shape when viewed from the front and has eight evenly spaced through-holes 19a. The annular internal gear 18, also made of metal, is fixed to the wheel base 5 by screwing it with eight bolts 20 to form the wheel 4.

[0038] In other words, the internal gear 18 is formed on the inner circumferential surface of the wheel base 5, which has a concave inner surface, so that the tooth tips point towards the center of the wheel base 5.

[0039] Furthermore, annular flanges 17a and 17b are provided on the inner and outer edges of the first convex step portion 15 of the wheel base 5. As shown in Figure 5, the height of the inner flange 17a is formed to be approximately equal to or less than the thickness of the internal gear 18.

[0040] Furthermore, as shown in Figure 11, a concave stirring section 7 can be formed on the concave inner bottom surface 6 of the wheel base 5 to stir the lubricating fluid L in the gap between the inner bottom surface 6 and the clamping disc 68, which will be described later.

[0041] In this embodiment, the stirring section 7 is close to the teeth of the internal gear 18, and four stirring sections 7 are formed at equal intervals near the periphery of the inner bottom surface 6 by cutting. In a front view, it is shaped like a right triangle extending outward from the center of the input shaft mounting hole 14, with adjacent sides 8 facing inward and the vertex 11 where opposite sides 9 and the hypotenuse 10 intersect facing outward.

[0042] Furthermore, opposite sides 9 form a stirring wall 12 that is cut almost vertically to the inner bottom surface 6, increasing in depth from the vertex 11 to the adjacent side 8. An inclined surface 13 that rises gently from below the stirring wall 12 to the inner bottom surface 6 is formed as the hypotenuse 10 at the point where it reaches the inner bottom surface 6.

[0043] The stirring wall 12 on opposite sides 9 is formed such that it holds and moves the internal lubricating fluid in the rotational direction relative to the rotation of the wheel 4, that is, the slanted side 10 is positioned forward and the opposite side 9 is positioned backward with respect to the direction of rotation.

[0044] The number, position, and shape of the stirring section 7 are not limited to this embodiment; any configuration is acceptable as long as it can hold and move the internal lubricating fluid in the rotational direction.

[0045] As shown in Figures 3 and 15, the input shaft 21 is made of metal and has an outer diameter formed at its tip so that it can be press-fitted into the input shaft mounting hole 14. It also has a shaft fixing flange 22 that contacts the outer surface of the wheel 4, and a keyway (not shown) is formed from there to the rear end. The input shaft 21 is press-fitted into the wheel 4 and protrudes outwards to form an integrated inertia wheel body 3.

[0046] As shown in Figures 2, 3, and 5, the input-side cover body 24 is made of metal and has a cylindrical bearing projection 25 that protrudes outward from the center of its circular shape when viewed from the front, with a rearward-expanding step formed on the inner surface of its rear end, and an input shaft through hole 26 drilled in this location. The end face of the connecting projection 28, which forms the outer circumference and is annular when viewed from the front, has 24 female threads 29b that are screwed into the bolt 20, and a second annular protruding step 30 is formed inside the connecting projection 28 when viewed from the front, and the outer circumference of the wheel base 5 and the outer flange 17b are formed to the extent that they do not come into contact with each other by the connecting projection 28 and the second protruding step 30.

[0047] Furthermore, a circular step 31, which is circular in shape and has an extremely low step, is formed on the concave bottom surface of the input-side cover body 24, and a transfer tongue 32, which is roughly triangular in shape and has a through hole 33, is provided protruding from the outer circumferential surface of the coupling projection 28.

[0048] The outer ring of a donut-shaped input bearing 27 (Fujikoshi Co., Ltd.: Model 6020) is press-fitted into the input shaft through hole 26, and the input shaft 21 is press-fitted into the inner ring of the input bearing 27, thereby supporting the input shaft 21, and the wheel 4 is surrounded inside the concave-shaped input-side cover body 24.

[0049] Furthermore, an oil seal (NOK Corporation: Model AE4079E0), not shown, and a C-type retaining ring (Ochiai Co., Ltd.: Model STW-100), not shown, are formed on the outside of the input bearing 27. The C-type retaining ring is disposed in an annular groove (not shown) formed at a predetermined location on the input shaft 21.

[0050] Next, as shown in Figures 2, 3, and 5, the output section 41 of the speed increaser 1 is composed of a gear body 42 and an output-side cover body 58. The gear body 42 consists of a main gear section 43, which is a main gear 48 connected to the output shaft 44, and a sub-gear 52 that transmits the rotation of the internal gear 18 to the main gear 48. The output-side cover body 58 supports the main gear 48 on the inside and the output shaft 44 passing through it on the outside, while fixing one end (rear end side) 53a of the sub-gear shaft 53 of the sub-gear 52 on the inside to accommodate the gear body 42, and is coupled to the output-side cover body 58.

[0051] As shown in Figure 5, the main gear section 43 consists of a main gear 48, an output shaft 44, and a flange 50 that presses and fixes them together. The main gear 48 is made of metal and has a roughly donut shape with teeth formed on its outer surface. The center is stepped, with a small-diameter opening that goes through to form an output shaft mounting hole 49 like a counterbore, and a large-diameter opening where the flange 50 is mounted.

[0052] The output shaft 44 is made of metal and has an outer diameter formed so that its tip can be press-fitted into the output shaft mounting hole 49. It also has four female threads 45c formed in the flange 50 that can be screwed into it via the counterbore holes 51b. It has a main gear fixing flange 47 that contacts the outer surface of the main gear 48, and a keyway (not shown) formed from there to the rear end. It is formed as a round bar of a predetermined length.

[0053] Furthermore, the thickness of the output shaft mounting hole 49 of the main gear 48 is formed to be slightly thicker than the length from the main gear fixing flange 47 to the tip of the output shaft 44, so that the flange 50 can press the main gear 48 against the tip of the output shaft 44.

[0054] The flange 50 is made of metal, is a circular block-shaped object positioned in the opening on the larger diameter side of the main gear section 43, and has four counterbore holes 51b formed therein.

[0055] By forming it in this way, the main gear section 43 is formed by press-fitting the tip of the output shaft 44 into the output shaft mounting hole 49 of the main gear 48, and then screwing and fixing the tip of the output shaft 44 with four pressing bolts 46 such that the flange 50 clamps and presses against the periphery of the output shaft mounting hole 49 of the main gear 48, thereby forming a main gear section 43 in which the main gear 48 and the output shaft 44 are firmly integrated.

[0056] The output-side cover body 58 is made of metal and has a circular shape when viewed from the front, with a disc-shaped gear bearing projection 59 of a predetermined thickness that is concentrically projecting outward from the center, and an output shaft through hole 60 drilled in this location. Twenty-four counterbore holes 64c are evenly formed on the annular coupling contact surface 63 that forms the outer edge when viewed from the front, through which bolts 20 are inserted. An annular third protruding step portion 65 is formed on the inside of the coupling contact surface 63 when viewed from the front, and the outer surface and inner flange portion 17a of the wheel base portion 5 are formed to engage with the inner wall of the input-side cover body 24 by the third protruding step portion 65 to the extent that they do not come into contact.

[0057] The outer ring of a donut-shaped output bearing 61 (Fujikoshi Co., Ltd.: Model 6020) is press-fitted into the output shaft through hole 60, and the output shaft 44 is press-fitted into the inner ring of the output bearing 61, thereby supporting the output shaft 44, and the main gear 48 is arranged inside the output side cover body 58.

[0058] Furthermore, a C-shaped retaining ring (Ochiai Co., Ltd.: Model STW-100), not shown, is fitted to the outside of the output bearing 61, and a flanged bush 62 made of POM resin, as shown in Figures 1 and 5, is fitted to the outermost part. The C-shaped retaining ring is positioned in an annular groove (not shown) formed at a predetermined location on the output shaft 44.

[0059] As shown in Figures 2, 3, and 5, the auxiliary gear 52 is made of metal, has teeth formed on its outer surface, and is roughly donut-shaped. An auxiliary gear bearing 55 (Misumi Corporation: Model B6008ZZ) is installed inside, and the auxiliary gear shaft 53 is press-fitted into the auxiliary gear bearing 55.

[0060] The auxiliary gear shaft 53 is made of metal and has an auxiliary gear fixing flange 54 formed approximately in the center. The rear end (one end) 53a is press-fitted into the first auxiliary gear shaft fixing hole 66 drilled in the output side cover body 58. The front end (other end) 53b, which is slightly shorter than the rear end 53a, is press-fitted into the auxiliary gear bearing 55 so that the auxiliary gear shaft 53 protrudes from the auxiliary gear bearing 55 to the extent that a clamping disc 68, which will be described later, can be press-fitted into it, thereby fixing the auxiliary gear 52 to the output side cover body 58.

[0061] Furthermore, a metal, annular collar 56 is fitted to the tip side 53b of the auxiliary gear shaft 53 to prevent contact between the clamping disc 68 and the auxiliary gear 52 when the auxiliary gear shaft 53 is pressed into the clamping disc 68, which will be described later.

[0062] In this embodiment, the auxiliary gears 52 are arranged radially in three directions at equal angles around the main gear 48, and each auxiliary gear 52 in each direction consists of two gears.

[0063] As shown in Figures 2 and 5, the clamping disc 68 is made of metal and is formed in the shape of a disc with a diameter smaller than the inner diameter of the internal gear 18. It has six second sub-gear shaft fixing holes 67 into which the tip side (other end) 53b of the sub-gear shaft 53 is press-fitted and secured, and is configured to substantially cover the gear body 42 between itself and the output side cover body 58.

[0064] Furthermore, the diameter of the clamping disc 68 should ideally be such that the teeth of the outermost auxiliary gear 52a are exposed when viewed from the front.

[0065] Furthermore, a guide portion 69 can be formed between the clamping disc 68 and the output side cover body 58 to guide the lubricating fluid L inclined toward the auxiliary gear 52.

[0066] In this embodiment, as shown in Figures 7 to 10, the guide portion 69 is formed on the inner surface of the clamping disc 68, and this will be described below. However, the guide portion 69 may also be formed on the output-side cover body 58, as long as it is between the clamping disc 68 and the output-side cover body 58.

[0067] As shown in Figures 7 and 8, the guide portion 69 is formed in an arc shape by curving a strip of metal plate concentric with the main gear 48 toward each tooth of the outermost auxiliary gear 52a and the intermediate auxiliary gear 52b, and is positioned on the inner surface of the clamping disc 68 so as to be positioned in the gaps between the auxiliary gears 52 which are arranged radially in three directions.

[0068] Furthermore, the guide portion 69a positioned in the gap between the outermost sub-gears 52a has two guide portions 69a in the center with a predetermined distance between them, and one guide portion 69b is formed in the gap between the intermediate sub-gears 52b.

[0069] By forming the guide portion 69 in this way, when the speed increase device 1 is installed with the axes of the input and output shafts 21 and 44 in the horizontal direction, the lubricating fluid L that adheres to the rotating internal gear 18 and falls from above can be efficiently applied to the upper half of the auxiliary gear 52.

[0070] Furthermore, the guide portion 69 is not limited to the shape described above. For example, as shown in Figures 9 and 10, the guide portion 69a, which is positioned in the gap between the outermost sub-gears 52a, can be made of metal, in a block-shaped, curved arc shape, concentric with the main gear 48, and positioned so that its inner side is close to the guide portion 69b formed in the gap between the intermediate sub-gears 52b. In short, various modifications and changes are possible within the scope of the gist of the present invention, as long as the guide portion 69a, which is positioned in the gap between the outermost sub-gears 52a, is inclined toward the sub-gears 52 between the clamping disc 68 and the output-side cover body 58 to guide the lubricating fluid L.

[0071] As described above, the input section 2, composed of the inertia wheel body 3 and the input-side cover body 24, and the output section 41, composed of the gear body 42 and the output-side cover body 58, are assembled by butting the coupling projection 28 of the input-side cover body 24, which has a female screw 29b, with the coupling contact surface 63 of the output-side cover body 58, which has a counterbore hole 64c, together and screwing them in place with 24 bolts 20. This creates a speed increaser 1 that incorporates a wheel 4 with an internal gear 18, a sub-gear 52, a main gear 48, and a clamping disc 68 (including a guide part 69), and is arranged opposite the input shaft 21 and the output shaft 44 so that their respective axes lie on the same axis.

[0072] The speed-increasing device 1, having the above-described configuration, is a device formed integrally by arranging an input shaft 21 formed in the input section 2 and an output shaft 44 formed in the output section 41 opposite each other so that their respective axes lie on the same axis, and by distributing a clamping disc 68 inside. The input section 2 consists of an inertia wheel body 3 with an input shaft 21 protruding from the center of the outside of a wheel 4 having an internal gear 18 formed on its inner circumferential surface which is concave on the inside, and an input-side cover body 24 that supports the input shaft 21 by penetrating it to the outside and surrounds the wheel 4 on the inside which is concave. The output section 41 consists of a gear body 42 consisting of a main gear 48 of a main gear section 43 to which the output shaft 44 is connected, and a sub-gear 52 that transmits the rotation of the internal gear 18 to the main gear 48, and a gear body 42 that supports the output shaft 44 by penetrating it to the outside with the main gear 48 on the inside and the sub-gear 52 on the inside. The gear body 42 is mounted on an output-side cover body 58 that secures one end 53a of the auxiliary gear shaft 53, and the clamping disc 68 is formed in the shape of a disc with a smaller diameter than the inner diameter of the internal gear 18, and secures the other end 53b of the auxiliary gear shaft 53 of the auxiliary gear 52, and is configured to substantially cover the gear body 42 between itself and the output-side cover body 58. A lid portion 71 is formed in the space between the input-side cover body 24 and the output-side cover body 58, which allows for the injection and discharge of lubricating fluid L. As a result, it is possible to permanently prevent tooth breakage and tooth surface damage of each gear 48, 52 of the gear body 42, which is constantly subjected to a large load at high rotational speeds and high temperatures, and the clamping disc 68 significantly reduces the effect of resistance from the lubricating fluid L on the rotational force of each gear 48, 52 of the gear body 42, so that high durability can be maintained while maintaining high rotational output.

[0073] Furthermore, since the auxiliary gears 52 are arranged radially in three directions at equal angles around the main gear 48, and there are two or more auxiliary gears 52 in each direction, it becomes easier to increase the diameter of the internal gear 18 in order to obtain high rotational output.

[0074] Furthermore, by forming a guide portion 69 between the clamping disc 68 and the output-side cover body 58 that is inclined toward the sub-gear 52 and guides the lubricating fluid L, when the speed increase device 1 is installed with the axes of the input and output shafts 21 and 44 in the horizontal direction, the lubricating fluid L that adheres to the rotating internal gear 18 and falls from above can be efficiently applied to the upper half of the gear that is not immersed in the lubricating fluid L. This permanently prevents tooth breakage and tooth surface damage of the gears and maintains high durability.

[0075] Furthermore, by forming a concave stirring section 7 on the inner bottom surface 6 of the wheel 4, when the speed increaser 1 is installed with the axes of the input and output shafts 21 and 44 in the horizontal direction, the lubricating fluid L in the gap between the clamping disc 68 and the inner bottom surface 6 of the wheel 4 is stirred, making it easier for the lubricating fluid L to move upward when the internal gear 18 rotates. This increases the amount of lubricating fluid L adhering to the internal gear 18, and increases the amount of lubricating fluid L falling from above adhering to the upper half of the gear, permanently preventing tooth breakage and tooth surface damage, and maintaining high durability.

[0076] Furthermore, by forming a guide portion 69 between the clamping disc 68 and the output-side cover body 58 that is inclined toward the sub-gear 52 to guide the lubricating fluid L, and by forming a concave stirring portion 7 on the inner bottom surface 6 of the wheel 4, when the speed increaser 1 is installed with the axes of the input and output shafts 21 and 44 in the horizontal direction, the lubricating fluid L that adheres to the rotating internal gear 18 and falls from above can be efficiently attached to the approximately upper half of the gear that is not immersed in the lubricating fluid L. Moreover, by stirring the lubricating fluid L in the gap between the clamping disc 68 and the inner bottom surface 6 of the wheel 4, the lubricating fluid L moves more easily upward when the internal gear 18 rotates, increasing the amount of lubricating fluid L that adheres to the internal gear 18, and increasing the amount of lubricating fluid L that falls from above and adheres to the approximately upper half of the gear, it is possible to further permanently prevent gear tooth breakage and tooth surface damage and maintain high durability.

[0077] Although preferred embodiments of the speed increaser 1 according to this embodiment of the present invention have been described above, the present invention is not limited to any particular embodiment, and various modifications and changes are possible. [Explanation of symbols]

[0078] E space L Lubricant 1. Speed ​​increaser 2 Input section 3. Inertia Wheel 4 wheels 6 Inner bottom surface 7 Stirring section 18 Internal gear 21 Input axis 24 Input side cover Output section 41 42 Gear Body 43 Main gear section 44 Output shaft 48 Main gear 52 Sub-gear 53 Sub-gear shaft 53a One end (rear end side) 53b Other end (tip side) 58 Output side cover 68 Clamping disc 69 Information Department 71 Lid

Claims

1. An apparatus formed integrally by arranging an input shaft formed in the input section and an output shaft formed in the output section opposite each other so that their respective axes lie on the same axis, and by placing a clamping disc inside, The input section comprises an inertia wheel body in which an internal gear is formed on the inner circumferential surface of a wheel with a concave inner surface, and the input shaft is provided protruding from the center of the outer side of the wheel. It consists of an input-side cover body that penetrates the input shaft outward and supports it, and an input-side cover body that surrounds the wheel on its concave inner surface, The output unit comprises a gear body consisting of a main gear of a main gear section connected to the output shaft, and a secondary gear that transmits the rotation of the internal gear to the main gear. The output side cover body supports the main gear on the inside and the output shaft through it on the outside, while fixing one end of the auxiliary gear shaft of the auxiliary gear on the inside and arranging the gear body thereon. The clamping disc is formed in the shape of a disc with a diameter smaller than the inner diameter of the internal gear, and is configured to anchor the other end of the auxiliary gear shaft of the auxiliary gear and substantially cover the gear body between itself and the output side cover body. A speed-increasing device characterized by having a lid portion formed in the space between the input-side cover body and the output-side cover body, which allows for the injection and discharge of lubricating fluid.

2. The speed-increasing device according to claim 1, characterized in that the auxiliary gears are arranged radially in three directions at equal angles around the main gear, and each direction has two or more auxiliary gears.

3. The speed increaser according to claim 1 or 2, characterized in that a guide portion is formed between the clamping disc and the output side cover body, which is inclined toward the auxiliary gear and guides the lubricating fluid.

4. The speed-increasing device according to claim 1 or 2, characterized in that a concave stirring section is formed on the inner bottom surface of the wheel.

5. The speed increaser according to claim 1 or 2, characterized in that a guide portion is formed between the clamping disc and the output side cover body, inclined toward the auxiliary gear to guide the lubricating fluid, and a concave stirring portion is formed on the inner bottom surface of the wheel.

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