Duplicate gear of gearbox

Abstract

The duplicate gear of the gear box comprises a large gear and a small gear, the interior of the large gear is connected with a thick shaft through a first connecting mechanism, the interior of the small gear is connected with a thin shaft through a second connecting mechanism, a square groove is formed in the side end of the thick shaft, a square column is arranged in the square groove in a sliding mode, and the square column is connected with the thin shaft through a second connecting mechanism. The side end of the square column is fixedly connected with the side end of the thin shaft, a threaded groove is formed in the square column, a threaded column is in threaded connection with the interior of the threaded groove, the threaded column is rotationally connected with the thick shaft, a circular plate is rotationally connected with the side end of the thick shaft, and the circular plate is fixedly connected with the threaded column, so that the distance between the large gear and the small gear can be correspondingly adjusted; the large gear and the small gear can be independently replaced conveniently, workers can operate and use the device conveniently, the large gear and the small gear can be disassembled conveniently, time and labor are saved, and the large gear and small gear replacing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double gears, and more specifically, to a double gear of a gear box. Background Art

[0002] The duplex gear is composed of two coaxial gears separated by a certain distance. Its function is to change the rotation speed or speed of the output shaft and is widely used in gearboxes.

[0003] The two gears on the double gear of the existing gear box are connected to each other, which makes it inconvenient to adjust the distance between the two gears on the double gear of the gear box according to usage requirements. When replacing gears with different numbers of tooth grooves, the two gears need to be replaced together, which makes it inconvenient for staff to operate and use. In addition, the double gears are connected to the shaft by inserting a key into the keyway on the shaft. Since the double gears are in a clamped state, it is time-consuming and laborious to disassemble the double gears, which affects the efficiency of gear replacement. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the utility model provides a double gear of a gear box to solve the technical problems mentioned in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double gear of a gearbox, comprising a large gear and a small gear, the interior of the large gear is connected to a thick shaft through a first connecting mechanism, the interior of the small gear is connected to a thin shaft through a second connecting mechanism, the side end of the thick shaft is provided with a square groove, the interior of the square groove is slidably provided with a square column, the side end of the square column is fixedly connected to the side end of the thin shaft, a threaded groove is provided on the square column, the internal thread of the threaded groove is connected to a threaded column, the threaded column is rotatably connected to the large shaft, the side end of the large shaft is rotatably connected to a circular plate, and the circular plate is fixedly connected to the threaded column, so as to facilitate the corresponding adjustment of the spacing between the large gear and the small gear, facilitate the replacement of the large gear and the small gear separately, facilitate the operation and use of the staff, facilitate the disassembly of the large gear and the small gear, save time and effort, and improve the efficiency of replacing the large gear and the small gear.

[0008] The utility model is further configured as follows: the first connecting mechanism includes two first positioning rings, the thick shaft is provided with a first strip groove, the interior of the first strip groove is evenly provided with a plurality of first positioning grooves, the two first positioning rings are both sleeved on the outside of the thick shaft, the two first positioning rings are respectively located on both sides of the large gear, the two first positioning rings are respectively located on both sides of the large gear, and one end of the two first positioning rings close to the large gear is fixedly connected with a plurality of first fixing columns in a circular array, both ends of the large gear are provided with a plurality of first clamping grooves adapted to the first fixing columns, the inner side walls of the two first positioning rings are provided with a first slide groove, the interior of the first slide groove is slidably provided with a first slide plate adapted to the first strip groove, the first slide plate is fixedly connected with a first positioning plate adapted to the first positioning groove, the thick shaft is provided with a first through groove connected to the first strip groove, the side end of the first strip groove is provided with a first slot adapted to the first through groove, the two first slide plates are provided with a second through groove, the first slot, the two second through grooves and the first through groove are inserted with a first square rod, the end of the first square rod extending to the outside of the thick shaft is fixedly connected with the first fixing plate, and the large gear is fixed by the first connecting mechanism.

[0009] The utility model is further configured as follows: the second connecting mechanism includes two second positioning rings, a second strip groove is provided on the thin shaft, and a plurality of second positioning grooves are evenly provided inside the second strip groove, the two second positioning rings are both sleeved on the outside of the thin shaft, the two second positioning rings are respectively located on both sides of the pinion, and the two second positioning rings are fixedly connected to a plurality of second fixing columns in a circular array at one end close to the pinion, and a plurality of second clamping grooves adapted to the second fixing columns are provided at both ends of the pinion, a second slide groove is provided on the inner side wall of the two second positioning rings, a second slide groove is slidably provided inside the second slide groove and adapted to the second strip groove, and a second positioning plate adapted to the second positioning groove is fixedly connected to the second slide plate, a third through groove connected to the second strip groove is provided on the thin shaft, a second slot adapted to the first through groove is provided at the side end of the first strip groove, and a fourth through groove is provided on the two second slide plates, a second square rod is inserted into the second slot, the two fourth through grooves and the third through groove, and the second square rod is fixedly connected to the second fixing plate at one end extending to the outside of the thin shaft, so that the pinion can be fixed conveniently through the second connecting mechanism.

[0010] The utility model is further configured such that the side ends of the first fixing plate and the second fixing plate are both provided with a third card slot, and the positions on the thick shaft and the thin shaft corresponding to the third card slot are fixedly connected with a fixing mechanism to facilitate fixing the first fixing plate and the second fixing plate.

[0011] The utility model is further configured as follows: the fixing mechanism includes a fixing seat, the fixing seat is provided with a third sliding groove, a third slide plate is slidingly provided inside the third sliding groove, the side end of the third slide plate is fixedly connected with a clamping plate adapted to the third clamping groove, the clamping plate and the fixing seat are slidably matched, the side end of the fixing seat is connected with a sealing plate by screws, a compression spring is connected between the sealing plate and the third slide plate, a pull rod is slidingly provided on the sealing plate, the side end of the pull rod is fixedly connected to the side end of the third slide plate, and the first fixing plate, the second fixing plate, the first square rod and the second square rod are conveniently fixed through the fixing mechanism.

[0012] The utility model is further configured that a pull plate is fixedly connected to the side end of the pull rod, and the pull plate facilitates the pull rod to move.

[0013] The utility model is further configured such that a plurality of fourth slots are arranged in a circular array on the side end of the circular plate, and a clamping column adapted to the fourth slot is fixedly connected to the first fixing plate, and the clamping column is inserted into the interior of the corresponding fourth slot to facilitate fixing of the circular plate.

[0014] The utility model is further configured that a regular hexagonal groove is provided at the side end of the circular plate, so that a hexagonal wrench can be inserted into the interior of the regular hexagonal groove to facilitate the rotation of the circular plate.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a double gear of a gear box, which has the following

[0017] Beneficial effects:

[0018] 1. By rotating the threaded column, the square column slides inside the square groove, so as to adjust the distance between the thin shaft and the thick shaft. At the same time, the large gear and the small gear are respectively installed at appropriate positions on the thick shaft and the thin shaft through the first connecting mechanism and the second connecting mechanism, so as to facilitate the corresponding adjustment of the distance between the large gear and the small gear. At the same time, through the cooperation of the square column and the square groove, the stable and synchronous rotation of the thin shaft, the thick shaft, the large gear and the small gear are guaranteed.

[0019] 2. When replacing gears with different numbers of tooth grooves, the first connecting mechanism and the second connecting mechanism are used to facilitate the removal of the large gear and the small gear from the thick shaft and the thin shaft respectively, and the first connecting mechanism and the second connecting mechanism are used to facilitate the installation of the large gear and the small gear on the thick shaft and the thin shaft respectively, thereby facilitating the replacement of the large gear and the small gear separately and facilitating the operation and use by the staff.

[0020] 3. The large gear and the small gear are respectively installed on the thick shaft and the thin shaft through the first connecting mechanism and the second connecting mechanism, which avoids the use of keys and other structures to fix the large gear and the small gear. At the same time, it is easy to disassemble the large gear and the small gear, saving time and effort, and improving the efficiency of replacing the large gear and the small gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front structure of a double gear of a gear box in the utility model;

[0022] Figure 2 It is a structural schematic diagram of the other side of a double gear of a gear box in the utility model;

[0023] Figure 3 It is a cross-sectional structural diagram of a local structure of a double gear of a gear box in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the connection of the first positioning ring, the first slide plate and the first positioning plate in the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the second positioning ring, the second slide plate and the second positioning plate in the utility model;

[0026] Figure 6 It is a schematic diagram of the structure of the large gear and the small gear in the utility model;

[0027] Figure 7 It is a structural schematic diagram of the connection between the first square rod, the first fixing plate and the clamping column in the utility model;

[0028] Figure 8 It is a schematic cross-sectional structure diagram of the fixing mechanism in the utility model.

[0029] In the figure: 1, large gear; 2, small gear; 3, thick shaft; 4, thin shaft; 5, square groove; 6, square column; 7, threaded groove; 8, threaded column; 9, round plate; 10, first positioning ring; 11, first strip groove; 12, first positioning groove; 13, first fixing column; 14, first clamping groove; 15, first slide groove; 16, first slide plate; 17, first positioning plate; 18, first through groove; 19, first slot; 20, second through groove; 21, first square rod; 22, first fixing plate; 23, second positioning ring; 24, second strip groove ; 25. Second positioning slot; 26. Second fixing column; 27. Second clamping slot; 28. Second slide slot; 29. ​​Second slide plate; 30. Second positioning plate; 31. Third through slot; 32. Second insertion slot; 33. Fourth through slot; 34. Second square rod; 35. Second fixing plate; 36. Third clamping slot; 37. Fixing seat; 38. Third slide slot; 39. Third slide plate; 40. Clamping plate; 41. Closing plate; 42. Compression spring; 43. Pull rod; 44. Pull plate; 45. Fourth clamping slot; 46. Clamping column; 47. Regular hexagonal slot. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] See also Figure 1-8 A double gear of a gearbox comprises a large gear 1 and a small gear 2. The interior of the large gear 1 is connected to a thick shaft 3 through a first connecting mechanism, and the interior of the small gear 2 is connected to a thin shaft 4 through a second connecting mechanism. A square groove 5 is provided at the side end of the thick shaft 3, and a square column 6 is slidably provided inside the square groove 5. The side end of the square column 6 is fixedly connected to the side end of the thin shaft 4. A threaded groove 7 is provided on the square column 6. A threaded column 8 is threadedly connected to the internal thread of the threaded groove 7. The threaded column 8 is rotatably connected to the large shaft 3. A circular plate 9 is rotatably connected to the side end of the large shaft 3. The circular plate 9 is fixedly connected to the threaded column 8. A regular hexagonal groove 47 is provided at the side end of the circular plate 9, which is convenient for inserting a hexagonal wrench into the interior of the regular hexagonal groove 47 to rotate the circular plate 9.

[0034] In this embodiment, by rotating the threaded column 8, the threaded column 8 rotates to make the square column 6 slide inside the square groove 5, so as to adjust the spacing between the thin shaft 4 and the thick shaft 3. At the same time, the large gear 1 and the small gear 2 are respectively installed at appropriate positions on the thick shaft 3 and the thin shaft 4 through the first connecting mechanism and the second connecting mechanism, so as to facilitate the corresponding adjustment of the spacing between the large gear 1 and the small gear 2. At the same time, through the cooperation of the square column 6 and the square groove 5, the stable and synchronous rotation of the thin shaft 4, the thick shaft 3, the large gear 1 and the small gear 2 is ensured. When replacing gears with different numbers of tooth grooves, the large gear 1 and the small gear 2 can be easily connected through the first connecting mechanism and the second connecting mechanism. The small gear 2 is removed separately from the thick shaft 3 and the thin shaft 4, and the large gear 1 and the small gear 2 are installed on the thick shaft 3 and the thin shaft 4 respectively through the first connecting mechanism and the second connecting mechanism, so that the large gear 1 and the small gear 2 can be replaced separately, which is convenient for the staff to operate and use. The large gear 1 and the small gear 2 are installed on the thick shaft 3 and the thin shaft 4 respectively through the first connecting mechanism and the second connecting mechanism, which avoids the use of keys and other structures to fix the large gear 1 and the small gear 2. At the same time, it is convenient to disassemble the large gear 1 and the small gear 2, saving time and effort, and improving the efficiency of replacing the large gear 1 and the small gear 2.

[0035] See also Figure 2 , Figure 3 and Figure 4 The first connecting mechanism includes two first positioning rings 10, a first strip groove 11 is provided on the thick shaft 3, a plurality of first positioning grooves 12 are evenly provided inside the first strip groove 11, the two first positioning rings 10 are both sleeved on the outside of the thick shaft 3, the two first positioning rings 10 are respectively located on both sides of the large gear 1, and the ends of the two first positioning rings 10 close to the large gear 1 are fixedly connected with a plurality of first fixing columns 13 in a circular array, and a plurality of first card grooves 14 adapted to the first fixing columns 13 are provided at both ends of the large gear 1, a first slide groove 15 is provided on the inner side wall of the two first positioning rings 10, and a first slide plate 16 adapted to the first strip groove 11 is slidably provided inside the first slide groove 15, and a first slide plate 16 is fixedly connected to the first fixing column 13 A first positioning plate 17 is adapted to the positioning groove 12, a first through groove 18 connected to the first strip groove 11 is provided on the thick shaft 3, a first slot 19 adapted to the first through groove 18 is provided on the side end of the first strip groove 11, and a second through groove 20 is provided on each of the two first slide plates 16. A first square rod 21 is inserted into the first slot 19, the two second through grooves 20 and the first through groove 18, and one end of the first square rod 21 extending to the outside of the thick shaft 3 is fixedly connected to a first fixing plate 22, a plurality of fourth slots 45 are provided in a circular array on the side end of the circular plate 9, and a clamping column 46 adapted to the fourth slot 45 is fixedly connected to the first fixing plate 22, which is inserted into the corresponding fourth slot 45 through the clamping column 46 to facilitate fixing the circular plate 9.

[0036] In this embodiment, when the large gear 1 needs to be installed, the first strip groove 11 is first rotated to the upper side of the thick shaft 3, and then the first slide plate 16 is completely inserted into the first slide groove 15, and then a first positioning ring 10 is sleeved on the outside of the thick shaft 3, and the first positioning ring 10 is moved to the corresponding position, and then the first positioning ring 10 is rotated to rotate the first slide plate 16 to the position corresponding to the first strip groove 11, and the first slide plate 16 falls to the inside of the first strip groove 11 by gravity, and the first positioning plate 17 is inserted into the corresponding first positioning groove 12, and then the large gear 1 is sleeved on the outside of the thick shaft 3, and the multiple first fixing columns 13 on the installed first positioning ring 10 are respectively inserted into the multiple first card grooves 14 on the large gear 1, and then another first positioning ring 10 is sleeved on the outside of the thick shaft 3, and the first positioning ring 10 is rotated, and the first slide groove 15 is rotated to the position corresponding to the first strip groove 11, and the first positioning ring 10 is dialed. The first slide plate 16 makes the first positioning plate 17 be located on the upper side of the first positioning groove 12, and then push the first positioning ring 10, and make the multiple first fixing columns 13 on the first positioning ring 10 respectively insert into the multiple first card grooves 14, and then release the first slide plate 16 on the first positioning ring 10, and the first slide plate 16 falls by the action of gravity so that the first positioning plate 17 is inserted into the corresponding first positioning groove 12, and the large gear 1 is fixed by the two first positioning rings 10, and then the first square rod 21 is inserted into the first through groove 18, the two second through grooves 20 and the first slot 19, and the two first slide plates 16 are fixed, thereby completing the installation of the large gear 1, when the large gear 1 needs to be disassembled, the first square rod 21 is pulled out, and then the first slide plate 16 and the first positioning plate 17 are completely pushed into the first slide groove 15, and then the first positioning ring 10 is removed from the thick shaft 3, and then the large gear 1 is removed.

[0037] See also Figure 1 , Figure 3 and Figure 5The second connecting mechanism includes two second positioning rings 23, a second strip groove 24 is provided on the thin shaft 4, and a plurality of second positioning grooves 25 are evenly provided inside the second strip groove 24. The two second positioning rings 23 are both sleeved on the outside of the thin shaft 4. The two second positioning rings 23 are respectively located on both sides of the pinion 2. The ends of the two second positioning rings 23 close to the pinion 2 are fixedly connected with a plurality of second fixing columns 26 in a circular array. Both ends of the pinion 2 are provided with a plurality of second card grooves 27 adapted to the second fixing columns 26. The inner side walls of the two second positioning rings 23 are provided with second slide grooves 28, and the interior of the second slide grooves 28 is provided with a second card groove 27 adapted to the second fixing columns 26. A second slide plate 29 is adapted to the two strip grooves 24, and a second positioning plate 30 adapted to the second positioning groove 25 is fixedly connected to the second slide plate 29. A third through groove 31 connected to the second strip groove 24 is provided on the thin shaft 4. A second slot 32 adapted to the first through groove 18 is provided at the side end of the first strip groove 11. A fourth through groove 33 is provided on the two second slide plates 29. A second square rod 34 is inserted into the second slot 32, the two fourth through grooves 33 and the third through groove 31. The second square rod 34 extends to one end of the outside of the thin shaft 4 and is fixedly connected to a second fixing plate 35. The pinion 2 is conveniently fixed through the second connecting mechanism.

[0038] In this embodiment, when the pinion 2 needs to be installed, the second strip groove 24 is first rotated to the upper side of the thin shaft 4, and then the second slide plate 29 is completely inserted into the second slide groove 28, and then a second positioning ring 23 is sleeved on the outside of the thin shaft 4, and the second positioning ring 23 is moved to the corresponding position, and then the second positioning ring 23 is rotated to rotate the second slide plate 29 to the position corresponding to the second strip groove 24, and the second slide plate 29 falls to the inside of the second strip groove 24 by gravity, and the second positioning plate 30 is inserted into the corresponding second positioning groove 25, and then the pinion 2 is sleeved on the outside of the thin shaft 4, and the multiple second fixing columns 26 on the installed second positioning ring 23 are respectively inserted into the multiple second card grooves 27 on the pinion 2, and then another second positioning ring 23 is sleeved on the outside of the thin shaft 4, and the second positioning ring 23 is rotated, and the second slide groove 28 is rotated to the position corresponding to the second strip groove 24, and the second positioning ring 23 is toggled. The second slide plate 29 makes the second positioning plate 30 be located on the upper side of the second positioning groove 25, and then the second positioning ring 23 is pushed, and the multiple second fixing columns 26 on the second positioning ring 23 are respectively inserted into the multiple second card grooves 27, and then the second slide plate 29 on the second positioning ring 23 is loosened, and the second slide plate 29 falls due to the action of gravity so that the second positioning plate 30 is inserted into the corresponding second positioning groove 25, and the pinion 2 is fixed by the two second positioning rings 23, and then the second square rod 34 is inserted into the third through groove 31, the two fourth through grooves 33 and the second slot 32, and the two second slide plates 29 are fixed, thereby completing the installation of the pinion 2. When the pinion 2 needs to be disassembled, the second square rod 34 is pulled out, and then the second slide plate 29 and the second positioning plate 30 are completely pushed into the second slide groove 28, and then the second positioning ring 23 is removed from the thin shaft 4, and then the pinion 2 can be disassembled.

[0039] See also Figure 8 The side ends of the first fixed plate 22 and the second fixed plate 35 are both provided with a third slot 36, and the positions corresponding to the third slot 36 on the thick shaft 3 and the thin shaft 4 are fixedly connected with a fixing mechanism, and the fixing mechanism includes a fixing seat 37, and the fixing seat 37 is provided with a third slide groove 38, and the third slide groove 38 is internally slidably provided with a third slide plate 39, and the side end of the third slide plate 39 is fixedly connected with a card plate 40 adapted to the third slot 36, and the card plate 40 is slidably matched with the fixed seat 37, and the side end of the fixed seat 37 is connected with a sealing plate 41 by screws, and a compression spring 42 is connected between the sealing plate 41 and the third slide plate 39, and a pull rod 43 is slidably provided on the sealing plate 41, and the side end of the pull rod 43 is fixedly connected to the side end of the third slide plate 39, and the side end of the pull rod 43 is fixedly connected with a pull plate 44, which is convenient for pulling the pull rod 43 to move.

[0040] In this embodiment, the pull rod 43 is pulled, and the pull rod 43 pulls the third slide plate 39 and the card plate 40 to move, and the card plate 40 is moved to the inside of the fixed seat 37. The slide plate and the card plate 40 are pushed to move by the compression spring 42, and the card plate 40 is inserted into the inside of the third card slot 36 to facilitate the fixation of the first fixed plate 22 and the second fixed plate 35.

[0041] In summary, when the overall equipment is in use:

[0042] By rotating the threaded column 8, the threaded column 8 rotates to make the square column 6 slide inside the square groove 5, thereby adjusting the distance between the thin shaft 4 and the thick shaft 3;

[0043] When the large gear 1 needs to be installed, first rotate the first strip groove 11 to the upper side of the thick shaft 3, then completely insert the first slide plate 16 into the first slide groove 15, then put a first positioning ring 10 on the outside of the thick shaft 3, and move the first positioning ring 10 to the corresponding position, then rotate the first positioning ring 10 to rotate the first slide plate 16 to the position corresponding to the first strip groove 11, the first slide plate 16 falls to the inside of the first strip groove 11 by gravity, and the first positioning plate 17 is inserted into the corresponding first positioning groove 12, then put the large gear 1 on the outside of the thick shaft 3, and insert the multiple first fixing columns 13 on the installed first positioning ring 10 into the multiple first card grooves 14 on the large gear 1 respectively, then put another first positioning ring 10 on the outside of the thick shaft 3, and rotate the first positioning ring 10, and rotate the first slide groove 15 to the position corresponding to the first strip groove 11, and move the first slide plate 16 to make the first positioning plate 17 located on the upper side of the first positioning groove 12, and then push the first positioning ring 10 The first fixing columns 13 on the first positioning ring 10 are respectively inserted into the first card slots 14, and then the first slide plate 16 on the first positioning ring 10 is loosened. The first slide plate 16 falls by gravity to insert the first positioning plate 17 into the corresponding first positioning slot 12. The large gear 1 is fixed by the two first positioning rings 10, and then the pull rod 43 is pulled. The pull rod 43 pulls the third slide plate 39 and the card plate 40 to move, and the card plate 40 is moved to the inside of the fixing seat 37, and then the first square rod 21 is inserted into the first through slot 18, the two second through slots 20 and the first insertion slot 19, and the side end of the first fixing plate 22 is in contact with the side end of the thick shaft 3, and then the pull plate 44 and the pull rod 43 are released, and the third slide plate 39 and the clamping plate 40 are pushed to move by the compression spring 42, and the clamping plate 40 is inserted into the third clamping slot 36, and the first fixing plate 22 and the first square rod 21 are fixed, so that the two first slide plates 16, the two first positioning rings 10 and the large gear 1 are fixed, so as to complete the installation of the large gear 1;

[0044] When the large gear 1 needs to be disassembled, the pull rod 43 is pulled, and the pull rod 43 pulls the third slide plate 39 and the clamping plate 40 to move, and the clamping plate 40 is moved to the inside of the fixed seat 37, the first square rod 21 is pulled out, and then the first slide plate 16 and the first positioning plate 17 are completely pushed into the inside of the first slide groove 15, and then the first positioning ring 10 is removed from the thick shaft 3, and then the large gear 1 is removed;

[0045] When the pinion 2 needs to be installed, first rotate the second strip groove 24 to the upper side of the thin shaft 4, then completely insert the second slide plate 29 into the second slide groove 28, then put a second positioning ring 23 on the outside of the thin shaft 4, and move the second positioning ring 23 to the corresponding position, then rotate the second positioning ring 23 to rotate the second slide plate 29 to the position corresponding to the second strip groove 24, the second slide plate 29 falls to the inside of the second strip groove 24 by gravity, and the second positioning plate 30 is inserted into the corresponding second positioning groove 25, then put the pinion 2 on the outside of the thin shaft 4, and insert the multiple second fixing columns 26 on the installed second positioning ring 23 into the multiple second card grooves 27 on the pinion 2 respectively, then put another second positioning ring 23 on the outside of the thin shaft 4, and rotate the second positioning ring 23, and rotate the second slide groove 28 to the position corresponding to the second strip groove 24, and move the second slide plate 29 to make the second positioning plate 30 located on the upper side of the second positioning groove 25, and then push the second positioning ring 23, The plurality of second fixing columns 26 on the second positioning ring 23 are respectively inserted into the interiors of the plurality of second card slots 27, and then the second slide plate 29 on the second positioning ring 23 is loosened, and the second slide plate 29 falls down by gravity to insert the second positioning plate 30 into the interior of the bottom side of the corresponding second positioning slot 25, and the pinion 2 is fixed by the two second positioning rings 23, and then the pull rod 43 is pulled, and the pull rod 43 pulls the third slide plate 39 and the card plate 40 to move, and the card plate 40 is moved to the interior of the fixing seat 37, and then the second square The rod 34 is inserted into the third through slot 31, the two fourth through slots 33 and the second slot 32, and the side end of the second fixing plate 35 is in contact with the side end of the thin shaft 4, and then the pull plate 44 and the pull rod 43 are released, and the third slide plate 39 and the clamping plate 40 are pushed to move by the compression spring 42, and the clamping plate 40 is inserted into the third clamping slot 36, and the second fixing plate 35 and the second square rod 34 are fixed, so that the two second slide plates 29, the two second positioning rings 23 and the pinion 2 are fixed, so as to complete the installation of the pinion 2;

[0046] When the pinion 2 needs to be disassembled, pull the pull rod 43, and the pull rod 43 pulls the third slide plate 39 and the clamping plate 40 to move, and moves the clamping plate 40 to the inside of the fixed seat 37, pulls out the second square rod 34, pulls out the second square rod 34, and then completely pushes the second slide plate 29 and the second positioning plate 30 into the second slide groove 28, and then removes the second positioning ring 23 from the thin shaft 4, and then removes the pinion 2.

[0047] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A double gear of a gearbox, comprising a large gear (1) and a small gear (2), characterized in that: The inside of the large gear (1) is connected to a thick shaft (3) via a first connection mechanism, and the inside of the small gear (2) is connected to a thin shaft (4) via a second connection mechanism. A square groove (5) is provided at the side end of the thick shaft (3), and a square column (6) is slidably provided inside the square groove (5). The side end of the square column (6) is fixedly connected to the side end of the thin shaft (4). A threaded groove (7) is provided on the square column (6). The inside of the threaded groove (7) is threadedly connected to a threaded column (8). The threaded column (8) is rotatably connected to the large shaft (3). A circular plate (9) is rotatably connected to the side end of the large shaft (3), and the circular plate (9) is fixedly connected to the threaded column (8).

2. The double gear of a gearbox according to claim 1, characterized in that: The first connecting mechanism comprises two first positioning rings (10), the thick shaft (3) is provided with a first strip groove (11), a plurality of first positioning grooves (12) are evenly arranged inside the first strip groove (11), the two first positioning rings (10) are both sleeved on the outside of the thick shaft (3), the two first positioning rings (10) are respectively located on both sides of the large gear (1), the two first positioning rings (10) are fixedly connected to a plurality of first fixing columns (13) in a circular array at one end close to the large gear (1), a plurality of first clamping grooves (14) matched with the first fixing columns (13) are arranged at both ends of the large gear (1), the inner side walls of the two first positioning rings (10) are provided with first slide grooves (15), and the first slide grooves (1 5) is provided with a first slide plate (16) adapted to the first strip groove (11) for sliding inside, a first positioning plate (17) adapted to the first positioning groove (12) is fixedly connected to the first slide plate (16), a first through groove (18) connected to the first strip groove (11) is provided on the thick shaft (3), a first slot (19) adapted to the first through groove (18) is provided at the side end of the first strip groove (11), a second through groove (20) is provided on the two first slide plates (16), a first square rod (21) is inserted into the first slot (19), the two second through grooves (20) and the first through groove (18), and one end of the first square rod (21) extending to the outside of the thick shaft (3) is fixedly connected to the first fixing plate (22).

3. The double gear of a gear box according to claim 2, characterized in that: The second connection mechanism comprises two second positioning rings (23), the thin shaft (4) is provided with a second strip groove (24), a plurality of second positioning grooves (25) are evenly arranged inside the second strip groove (24), the two second positioning rings (23) are both sleeved on the outside of the thin shaft (4), the two second positioning rings (23) are respectively located on both sides of the pinion (2), the two second positioning rings (23) are fixedly connected to a plurality of second fixing columns (26) in a circular array at one end close to the pinion (2), a plurality of second clamping grooves (27) matched with the second fixing columns (26) are arranged at both ends of the pinion (2), the inner side walls of the two second positioning rings (23) are provided with second slide grooves (28), and the second slide grooves (2 A second slide plate (29) adapted to the second strip groove (24) is slidably arranged inside the thin shaft (4), a second positioning plate (30) adapted to the second positioning groove (25) is fixedly connected to the second slide plate (29), a third through groove (31) connected to the second strip groove (24) is arranged on the thin shaft (4), a second slot (32) adapted to the first through groove (18) is arranged at the side end of the first strip groove (11), a fourth through groove (33) is arranged on the two second slide plates (29), a second square rod (34) is inserted into the second slot (32), the two fourth slots (33) and the third through groove (31), and one end of the second square rod (34) extending to the outside of the thin shaft (4) is fixedly connected to the second fixing plate (35).

4. The double gear of a gear box according to claim 3, characterized in that: The side ends of the first fixing plate (22) and the second fixing plate (35) are both provided with a third clamping groove (36), and positions on the thick shaft (3) and the thin shaft (4) corresponding to the third clamping groove (36) are both fixedly connected with a fixing mechanism.

5. The double gear of a gear box according to claim 4, characterized in that: The fixing mechanism includes a fixing seat (37), a third slide groove (38) is arranged on the fixing seat (37), a third slide plate (39) is slidably arranged inside the third slide groove (38), a side end of the third slide plate (39) is fixedly connected with a card plate (40) adapted to the third card groove (36), the card plate (40) and the fixing seat (37) are slidably matched, the side end of the fixing seat (37) is connected with a sealing plate (41) by screws, a compression spring (42) is connected between the sealing plate (41) and the third slide plate (39), a pull rod (43) is slidably arranged on the sealing plate (41), and the side end of the pull rod (43) is fixedly connected with the side end of the third slide plate (39).

6. The double gear of a gear box according to claim 5, characterized in that: A pull plate (44) is fixedly connected to the side end of the pull rod (43).

7. The double gear of a gear box according to claim 2, characterized in that: A plurality of fourth slots (45) are arranged in a circular array on the side end of the circular plate (9), and a clamping column (46) adapted to the fourth slots (45) is fixedly connected to the first fixing plate (22).

8. The double gear of a gear box according to claim 1, characterized in that: A regular hexagonal groove (47) is provided at the side end of the circular plate (9).

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