A double gear with adjustable relative positions of large and small gears

Abstract

The present invention discloses a double gear with adjustable relative positions of large and small gears, comprising a double gear body; the double gear comprises a number one gear and a number two gear; the number one gear is movably connected to the inside of the number two gear; a movable cavity, a number one limiting groove and a number two limiting groove are provided inside the number two gear, and one end of the number one gear close to the number two gear is movably connected to the movable cavity, the number one limiting groove and the number two limiting groove; by arranging the number one gear movable in the number two gear, while satisfying the effect of the adjustable speed of the double gear, the mobility of the number one gear can also be used to adjust the length of the double gear, and the hexagon socket screw can be used to lock the number one gear and the number two gear, so that within a certain range of adjustment, it can adapt to gearboxes with different transmission structures, making the application range of the double gear wider.

Description

Technical Field

[0001] The present invention relates to the technical field of duplex gears, in particular to a duplex gear with adjustable relative positions of large and small gears. Background Art

[0002] A duplex gear is a gear made of two sets of coaxially stacked gears, which can be used to change the speed of the output shaft.

[0003] There are many types of duplex gears on the market. Generally, duplex gears are fixed structures and cannot be adjusted. When in use, the output shaft sleeve is set in the duplex gear. By adjusting the position of the duplex gear, it can be used to engage with gears of different sizes, thereby changing the output speed of the output shaft.

[0004] Since the current duplex gears are all fixed structures, they cannot be adjusted according to the spacing of the meshing gears when used in the gearbox. Therefore, it is necessary to arrange multiple sets of gears of different sizes on the output shaft for meshing gears that exceed the adjustable spacing of the duplex gears, which in turn limits the application range of the duplex gears. Therefore, to address the above problem, a duplex gear with adjustable relative positions of large and small gears is proposed. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned problems, the present invention proposes a double gear with adjustable relative positions of large and small gears.

[0006] A double gear with adjustable relative positions of large and small gears, comprising a double gear body; the double gear comprises a number one gear and a number two gear; the number one gear is movably connected inside the number two gear; a movable cavity, a number one limiting groove and a number two limiting groove are provided inside the number two gear, and the end of the number one gear close to the number two gear is movably connected in the movable cavity, the number one limiting groove and the number two limiting groove; a threaded hole is provided on the surface of the number two gear that passes through the number two gear, and the threaded hole is threadedly connected to a hexagon socket screw; the hexagon socket screw is threadedly connected to the number one gear and the number two gear.

[0007] Preferably, a connecting ring is fixed to the end of the No. 1 gear, and symmetrically arranged connecting ears are fixed to the connecting ring; the connecting ring is movably connected in the movable cavity, the No. 1 limiting groove and the No. 2 limiting groove; the hexagon socket screw thread passes through the connecting ear.

[0008] Preferably, a protective plate is fixedly connected between the top of the connecting ring and the number one gear, and symmetrically arranged indicating blocks are fixedly connected to the protective plate.

[0009] Preferably, a through hole is provided at the bottom of the second gear, and the threaded holes are distributed on both sides of the through hole.

[0010] Preferably, an adjustment hole corresponding to the connecting ear is provided between the No. 1 limiting groove and the No. 2 limiting groove; and the size of the adjustment hole is larger than the size of the connecting ear.

[0011] Preferably, a sliding groove is provided on the bottom surface of the movable cavity, and a spring coupling is slidably connected in the sliding groove; the other end of the spring coupling is clamped on the bottom of the connecting ring located in the No. 1 limiting groove.

[0012] Preferably, the distance between the protective plate and the second gear is greater than the distance between the first limiting groove and the second limiting groove.

[0013] Preferably, a scraper is fixedly connected to the surface of the second gear at one end facing the first gear, and the inner side of the scraper is attached to the side wall of the connecting ring.

[0014] The present invention is beneficial in that:

[0015] 1. The present invention provides a first gear that is movable within a second gear. While satisfying the effect of adjustable speed of the double gear, the mobility of the first gear can also be used to adjust the length of the double gear. The first and second gears are locked using hexagon socket screws. Therefore, within a certain adjustment range, the double gear can be adapted to gearboxes with different transmission structures, making the application range of the double gear wider.

[0016] 2. The present invention provides adjustment slots in the No. 1 limit slot and the No. 2 limit slot, which can be used to adjust the duplex gears within a certain range, so that the No. 1 gear can be telescopically changed within the No. 2 gear. At the same time, in conjunction with the spring coupling provided in the connecting ring, the No. 1 gear can be tightened and limited after the No. 1 gear is adjusted, and in conjunction with the hexagon socket screw, the stability of the duplex gears during operation is maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A perspective view of an embodiment of the present invention;

[0019] Figure 2 An exploded view of an embodiment of the present invention;

[0020] Figure 3 A first sectional perspective view of an embodiment of the present invention;

[0021] Figure 4A second cross-sectional perspective view of an embodiment of the present invention;

[0022] Figure 5 A cross-sectional view of an embodiment of the present invention;

[0023] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part A;

[0024] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure of part B.

[0025] In the figure: 11, gear No. 1; 111, indicator block; 112, connecting ring; 113, protective plate; 114, connecting ear; 12, gear No. 2; 121, through hole; 122, threaded hole; 123, movable cavity; 124, limit slot No. 1; 125, limit slot No. 2; 126, spring coupling; 127, slide slot; 128, adjustment hole; 13, hexagon socket screw; 14, scraper. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1-7 As shown, a double gear with adjustable relative positions of large and small gears includes a double gear body; the double gear includes a number one gear 11 and a number two gear 12; the number one gear 11 is movably connected inside the number two gear 12; a movable cavity 123, a number one limiting groove 124 and a number two limiting groove 125 are provided inside the number two gear 12, and the end of the number one gear 11 close to the number two gear 12 is movably connected in the movable cavity 123, the number one limiting groove 124 and the number two limiting groove 125; a threaded hole 122 is provided on the surface of the number two gear 12, which passes through the number two gear 12, and the threaded hole 122 is threadedly connected to a hexagon socket screw 13; the hexagon socket screw 13 is threadedly connected to the number one gear 11 and the number two gear 12.

[0028] During operation, since the current double gears are all fixed structures, when used in a transmission, they cannot be adjusted according to the spacing of the meshing gears. Therefore, it is necessary to arrange multiple sets of gears of different sizes on the output shaft to mesh with gears that exceed the adjustable spacing of the double gears, which limits the application range of the double gears. When the device is in use, the connecting ring 112 at the bottom of the first gear 11 is located in the first limiting groove 124 or the second limiting groove 125 in the second gear 12, and the part between the connecting ring 112 and the first gear 11 is located in the movable cavity 123. When the connecting ring 112 at the bottom of the first gear 11 is located in the second limiting groove 125, it is the initial state of the double gear. When used in a transmission with a larger gear spacing, since the connecting ring 112 at the bottom of the first gear 11 is located in the second limiting groove 125, the overlapping length of the first gear 11 and the second gear 12 is less than the spacing between the two sets of gears. The first gear 11 is rotated 90 degrees and then pulled outwards a certain distance, so that the connecting ring 112 at the bottom of the first gear 11 can be displaced into the first limiting groove 124, thereby increasing the length of the first gear 11 and the second gear 12. When adjusting the double gear, it is possible to mesh with gears with larger spacings respectively to achieve the purpose of adjusting the speed. Therefore, the double gear uses the mobility of the first gear 11 to adjust the relative position of the first gear 11 and the second gear 12 in the double gear, and uses the hexagon socket screw 13 to lock the first gear 11 and the second gear 12, so that within a certain range of adjustment, it can adapt to gearboxes with different transmission structures, making the application range of the double gear wider.

[0029] As an embodiment of the present invention, a connecting ring 112 is fixed to the end of the No. 1 gear 11, and symmetrically arranged connecting ears 114 are fixed to the connecting ring 112; the connecting ring 112 is movably connected in the movable cavity 123, the No. 1 limiting groove 124 and the No. 2 limiting groove 125; the hexagon socket screw 13 is threaded through the connecting ear 114.

[0030] During operation, a connecting ring 112 is provided at the end of the No. 1 gear 11, on which symmetrical connecting ears 114 are arranged. The position of the No. 1 gear 11 can be limited by the connecting ears 114. Only after it is manually rotated 90° can it be driven to move longitudinally on the No. 2 gear 12, thereby realizing the relative position adjustment of the double gears. After adjustment, it is fixed with the hexagon socket screw 13 that passes through the No. 2 gear 12.

[0031] As an embodiment of the present invention, a protective plate 113 is fixedly connected between the top of the connecting ring 112 and the first gear 11 , and symmetrically arranged indicator blocks 111 are fixedly connected to the protective plate 113 .

[0032] During operation, the protective plate 113 arranged between the number one gear 11 and the connecting ring 112 is attached to the bottom of the number one gear 11, and is used to protect the bottom of the number one gear 11 to prevent it from getting stuck in the gap between the number one gear 11 and the number two gear 12 when the gears are engaged. The indicator block 111 arranged on the protective plate 113 is used to indicate the rotation angle of the number one gear 11, which is convenient for adjustment.

[0033] As an embodiment of the present invention, a through hole is formed at the bottom of the second gear 12 , and the threaded holes 122 are distributed on both sides of the through hole 121 .

[0034] During operation, a through hole is provided at the bottom of the second gear 12, and a through hole is provided inside the corresponding number one gear 11. The through hole can be used for the output shaft to pass through, thereby driving the output shaft to rotate, and the threaded holes 122 are located on both sides of the through hole 121, so when adjusting with the hexagon socket screw 13, it will not be affected by the output shaft.

[0035] As an embodiment of the present invention, an adjustment hole 128 corresponding to the connecting ear 114 is opened between the first limiting groove 124 and the second limiting groove 125 ; the size of the adjustment hole 128 is larger than that of the connecting ear 114 .

[0036] During operation, the adjustment hole 128 located between the No. 1 limiting groove 124 and the No. 2 limiting groove 125 needs to be larger than the connecting ear 114. Therefore, when the No. 1 gear 11 is manually moved, the connecting ear 114 at the bottom of the No. 1 gear 11 can pass through the adjustment hole 128, so that the connecting ring 112 can move from the No. 1 limiting groove 124 to the No. 2 limiting groove 125, and vice versa.

[0037] As an embodiment of the present invention, a sliding groove 127 is provided on the bottom surface of the movable cavity 123, and a spring connecting shaft 126 is slidably connected in the sliding groove 127; the other end of the spring connecting shaft 126 is clamped at the bottom of the connecting ring 112 located in the No. 1 limiting groove 124.

[0038] During operation, a slide groove 127 is provided at the bottom of the movable cavity 123. The spring movably connected in the slide groove 127 has two cycles, and one end thereof is clamped at the bottom of the connecting ring 112. Therefore, when the connecting ring 112 is adjusted, the spring connecting shaft 126 will rotate on the bottom surface of the movable cavity 123. The spring connecting shaft 126 has a certain elastic potential energy, which can drive the connecting ring 112 to press tightly against the No. 1 limit groove 124 or the No. 2 limit groove 125.

[0039] As an embodiment of the present invention, the distance between the protective plate 113 and the second gear 12 is greater than the distance between the first limiting groove 124 and the second limiting groove 125 .

[0040] During operation, the distance between the protective plate 113 and the second gear 12 is set to be smaller than the distance between the first limiting groove 124 and the second limiting groove 125. The purpose is to avoid excessive adjustment of the first gear 11 when adjusting the first gear 11, so that the connecting ring 112 cannot move into the second limiting groove 125 in the second gear 12.

[0041] As an embodiment of the present invention, a scraper 14 is fixedly connected to the surface of the second gear 12 facing the first gear 11 , and the inner side of the scraper 14 is attached to the side wall of the connecting ring 112 .

[0042] During operation, when the No. 1 gear 11 and the No. 2 gear 12 move relative to each other, the scraper 14 on the top of the No. 2 gear 12 can clean the movable connecting ring 112 of the No. 1 gear 11. The scraper 14 can be used to remove oil and dirt attached between the connecting ring 112 and the protective plate 113 to maintain the mechanical properties of the double gears.

[0043] Working principle: Since the current double gears are all fixed structures, they cannot be adjusted according to the spacing of the meshing gears when used in the gearbox. Therefore, it is necessary to arrange multiple sets of gears of different sizes on the output shaft to mesh with gears that exceed the adjustable spacing of the double gears, which in turn limits the application range of the double gears. When the device is in use, the connecting ring 112 at the bottom of the No. 1 gear 11 is located in the No. 1 limiting groove 124 or the No. 2 limiting groove 125 in the No. 2 gear 12, and the part between the connecting ring 112 and the No. 1 gear 11 is located in the movable cavity 123. When the connecting ring 112 at the bottom of the No. 1 gear 11 is in the movable cavity 123, When it is located in the No. 2 limiting groove 125, it is the initial state of the duplex gear. When it is used in a gearbox with a larger gear spacing, since the connecting ring 112 at the bottom of the No. 1 gear 11 is located in the No. 2 limiting groove 125, the overlapping length of the No. 1 gear 11 and the No. 2 gear 12 is less than the spacing between the two sets of gears. Therefore, the duplex gear cannot be adjusted to mesh with the other set of gears by adjusting the duplex gear. At this time, the hexagon socket screw 13 is manually removed to maintain a movable relationship between the No. 1 gear 11 and the No. 2 gear 12. Through manual action, the No. 1 gear 11 is rotated 90° and then pulled outward a certain distance, so that the connecting ring 112 at the bottom of the No. 1 gear 11 can be displaced into the No. 1 limiting groove 124, thereby increasing the length of the No. 1 gear 11 and the No. 2 gear 12. When adjusting the duplex gear, it can be adjusted to mesh with the gears with a larger spacing. The two gears 11 and 12 are engaged with each other respectively to achieve the purpose of adjusting the speed. Therefore, the double gear uses the mobility of the first gear 11 to adjust the relative position of the first gear 11 and the second gear 12 in the double gear, and uses the hexagon socket screw 13 to lock the first gear 11 and the second gear 12, so that within a certain range of adjustment, it can adapt to gearboxes with different transmission structures, making the application range of the double gear wider; wherein, the connecting ring 112 provided at the end of the first gear 11 has symmetrical connecting ears 114 arranged thereon, and the position of the first gear 11 can be limited by the connecting ears 114. Only after it is manually rotated 90° can it be driven to move longitudinally on the second gear 12, thereby achieving the relative position adjustment of the double gear, and after adjustment, it is fixed with the hexagon socket screw 13 passing through the second gear 12;

[0044] The protective plate 113 provided between the No. 1 gear 11 and the connecting ring 112 is fitted to the bottom of the No. 1 gear 11, and is used to protect the bottom of the No. 1 gear 11 to prevent it from getting stuck in the gap between the No. 1 gear 11 and the No. 2 gear 12 when the gears are engaged. The indicator block 111 provided on the protective plate 113 is used to indicate the rotation angle of the No. 1 gear 11 for easy adjustment. At the same time, a sliding groove 127 is provided at the bottom of the movable cavity 123. The two sides of the spring movably connected in the sliding groove 127 have one end clamped on the bottom of the connecting ring 112. Therefore, when the connecting ring 112 is adjusted, the spring connecting shaft 126 will rotate on the bottom surface of the movable cavity 123. The spring connecting shaft 126 has a certain elastic potential energy, which can drive the connecting ring 112 to press tightly against the No. 1 limiting groove 124 or the No. 2 limiting groove 125.

[0045] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A double gear with adjustable relative positions of large and small gears, characterized by: The invention comprises a double gear body; the double gear comprises a first gear (11) and a second gear (12); the first gear (11) is movably connected to the inside of the second gear (12); a movable cavity (123), a first limiting groove (124) and a second limiting groove (125) are provided inside the second gear (12), and one end of the first gear (11) close to the second gear (12) is movably connected to the movable cavity (123), the first limiting groove (124) and the second limiting groove (125); a threaded hole (122) penetrating the second gear (12) is provided on the surface of the second gear (12), and the threaded hole (122) is internally threadedly connected to a hexagon socket screw (13); the hexagon socket screw (13) is threadedly connected to the first gear (11) and the second gear (12); The end of the first gear (11) is fixedly connected to a connecting ring (112), and a protective plate (113) is fixedly connected between the top of the connecting ring (112) and the first gear (11); the distance between the protective plate (113) and the second gear (12) is greater than the distance between the first limiting groove (124) and the second limiting groove (125); A scraper (14) is fixedly connected to the surface of one end of the second gear (12) facing the first gear (11), and the inner side of the scraper (14) is attached to the side wall of the connecting ring (112).

2. The double gear with adjustable relative positions of large and small gears according to claim 1, characterized in that: The connecting ring (112) is fixedly connected with symmetrically arranged connecting ears (114); the connecting ring (112) is movably connected in the movable cavity (123), the first limiting groove (124) and the second limiting groove (125); the hexagon socket screw (13) is threadedly passed through the connecting ears (114).

3. The double gear with adjustable relative positions of large and small gears according to claim 2, characterized in that: Furthermore, symmetrically arranged indicator blocks (111) are fixedly connected to the protective plate (113).

4. The double gear with adjustable relative positions of large and small gears according to claim 3, characterized in that: A through hole is provided at the bottom of the second gear (12), and the threaded holes (122) are distributed on both sides of the through hole (121).

5. The double gear with adjustable relative positions of large and small gears according to claim 4, characterized in that: An adjustment hole (128) corresponding to the connecting ear (114) is provided between the first limiting groove (124) and the second limiting groove (125); the size of the adjustment hole (128) is larger than the size of the connecting ear (114).

6. The double gear with adjustable relative positions of large and small gears according to claim 5, characterized in that: The bottom surface of the movable cavity (123) is provided with a sliding groove (127), and a spring connecting shaft (126) is slidably connected in the sliding groove (127); the other end of the spring connecting shaft (126) is clamped on the bottom of the connecting ring (112) located in the No. 1 limiting groove (124).

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