CN220337383U

CN220337383U - Worm gear reducer

Info

Publication number: CN220337383U
Application number: CN202321791187.2U
Authority: CN
Inventors: 林显芬
Original assignee: Wenzhou Pubang Transmission Co ltd
Current assignee: Wenzhou Pubang Transmission Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-01-12
Anticipated expiration: 2033-07-10

Abstract

The utility model relates to a worm gear reducer, which comprises a shell, and a worm wheel, a worm and an output shaft which are arranged in the shell, wherein the worm forms a drive for the worm wheel, the worm gear reducer comprises a sealing disc and a fixing piece, an output through hole for the output shaft to pass through is arranged in the center of the worm wheel, an alignment through hole which is matched with the shape and the size of the sealing disc is arranged on the shell, the alignment through hole is opposite to the output through hole, a matching through hole for the output shaft to pass through is arranged on the other side of the shell, a fixing hole is arranged on the periphery of the output through hole, an extension ring which extends towards the periphery is arranged at the end part of the output shaft, an extension hole opposite to the fixing hole is arranged on the extension ring, the sealing disc is provided with a sealing hole opposite to the fixing hole, and the fixing piece passes through the sealing hole, the extension hole and forms the fixing of the sealing disc, the output shaft and the worm wheel, and the sealing disc are positioned in the alignment through hole and are in rotating fit with the shell.

Description

Worm gear reducer

Technical Field

The utility model relates to a speed reducer, in particular to a worm gear speed reducer.

Background

The worm gear speed reducer is a power transmission mechanism, the rotation number of a motor is reduced to a required rotation number by utilizing a speed converter of a gear, and a mechanism with larger torque is obtained.

The worm gear speed reducer is to dismantling the valve rod of different diameters, but present worm gear speed reducer is dismantled inconveniently, need dismantle the casing of worm gear speed reducer to pull down the output shaft that is arranged in worm gear speed reducer and process or change, install worm gear speed reducer again in, reassemble the casing, accomplish the drive to different diameter valve rods, the dismantlement process is complicated.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a worm gear reducer with an output shaft easy to disassemble.

In order to achieve the above purpose, the present utility model provides the following technical solutions: including the casing and set up worm wheel, worm and the output shaft in the casing, the worm constitutes the drive to the worm wheel, including sealing plate and mounting, the worm wheel center is provided with the output through-hole that supplies the output shaft to pass, be provided with on the casing with sealing plate shape size looks adaptation counterpoint through-hole and counterpoint through-hole relatively, the opposite side of casing counterpoint through-hole is provided with the cooperation through-hole that supplies the output shaft to pass, output through-hole periphery ring is equipped with the fixed orifices, the output shaft tip is provided with the extension ring that extends to the periphery, be provided with the extension hole relatively with the fixed orifices on the extension ring, be provided with the sealing hole relatively with the fixed orifices on the sealing plate, the mounting passes sealing plate, the extension hole forms sealing plate with the fixed of output shaft and worm wheel, sealing plate is located counterpoint through-hole and with casing normal running fit, the mounting can be the screw.

Through adopting above-mentioned technical scheme, when needs change the output shaft in order to satisfy the user demand of different valve stems, pull down the screw, can take out sealed dish, output shaft in proper order this moment, then removable output shaft or carry out secondary operation to the output shaft, satisfy the user demand, pass the counterpoint through-hole with the output shaft again, and in the output through-hole, place sealed dish in the output shaft top again, make fixed orifices, extension hole and sealed hole relative, pass the screw again and form fixedly, need not to pull down the casing through this mode, but trompil in last casing, dismantle sealed dish, thereby can take out the output shaft singly afterwards, dismantle whole casing for, the operation burden is little, work efficiency is high.

The utility model is further provided with: the shell include casing and lower casing, counterpoint through-hole sets up in last casing, the cooperation through-hole sets up in lower casing, lower casing is close to casing one side relatively and is provided with the annular arch that is relative with the worm wheel and the cooperation through-hole extends and pass annular arch, go up casing detachable and set up in lower casing and form the worm wheel holding chamber that holds the worm wheel, go up the casing and have the worm holding chamber that holds the worm and worm holding chamber and worm wheel holding chamber UNICOM, the diameter of output through-hole is less than the diameter of counterpoint through-hole.

Through adopting above-mentioned technical scheme, the diameter of output through-hole is less than the diameter of counterpoint through-hole and makes the output shaft get into in the output through-hole smoothly, and after the mounting was fixed worm wheel, output shaft and sealing disk, because the worm wheel can't pass through counterpoint through-hole, and worm wheel bottom offsets with annular arch, and the top offsets with last casing, forms the rotation fixed to the worm wheel.

The utility model is further provided with: the worm wheel is provided with an annular part and a fan-shaped part, the fan-shaped part is positioned at the periphery of the annular part, the output through hole is positioned at the center of the annular part, the fan-shaped part is provided with a meshing part meshed with the worm, and the fan-shaped part is ninety degrees.

By adopting the technical scheme, the sector part is not round, so that manufacturing materials are saved, and the use requirement can be met.

The utility model is further provided with: one side of the upper shell, which is relatively close to the lower shell, is provided with a limiting part, and the limiting part is positioned on the moving track of the fan-shaped part.

Through adopting above-mentioned technical scheme, setting up of spacing portion makes can restrict the rotation angle of output shaft.

The utility model is further provided with: the outer side of the upper shell is provided with a screw rod in threaded connection with the upper shell, and the screw rod is provided with an extension part extending to the limiting part.

Through adopting above-mentioned technical scheme, the setting of screw rod makes can further adjust the spacing to the rotation angle of sector.

The utility model is further provided with: the novel gear box comprises a driving rotating shaft, a driven rotating shaft, a first gear, a second gear, a third gear and a fourth gear, wherein the upper shell is further provided with a gear cavity, the driving rotating shaft, the driven rotating shaft, the first gear, the second gear, the third gear and the fourth gear are arranged in the gear cavity, the driving rotating shaft is provided with a driving end extending out of the gear cavity, the first gear is arranged on the driving rotating shaft and synchronously rotates, the second gear and the third gear synchronously rotate on the driven rotating shaft, the first gear is meshed with the second gear, the third gear is meshed with the fourth gear, the fourth gear synchronously rotates with a worm, the diameter of the first gear is smaller than that of the second gear, and the diameter of the third gear is smaller than that of the fourth gear.

Through adopting above-mentioned technical scheme, when needs are to screw rod drive, rotate first gear through the drive end earlier, then drive driven pivot through the second gear and rotate, then drive third gear and rotate to finally drive the screw rod through the fourth gear and rotate, and because the diameter of first gear is less than the diameter of second gear, the diameter of third gear is less than the diameter of fourth gear, guarantees to obtain great moment of torsion.

The utility model is further provided with: the driving device comprises a hand wheel, wherein the hand wheel is arranged at a driving end and is used for driving the driving rotating shaft to rotate.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is an exploded view of the overall utility model;

FIG. 3 is a schematic view of the upper housing of the present utility model;

fig. 4 is a schematic structural diagram of the driving shaft, the driven shaft and related elements of the present utility model.

In the figure: 1. a housing; 11. an upper housing; 111. aligning the through holes; 12. a lower housing; 121. a mating through hole; 122. a circumferential projection; 13. a worm wheel accommodating chamber; 14. a worm accommodation chamber; 15. a limit part; 16. a screw; 17. an extension; 2. a worm; 3. a housing; 31. an annular portion; 32. a sector; 33. an output through hole; 34. a fixing hole; 4. an output shaft; 41. an extension ring; 42. an extension hole; 5. a closing disk; 51. closing the hole; 6. a fixing member; 71. a driving rotating shaft; 711. a driving end; 72. a driven rotating shaft; 73. a first gear; 74. a second gear; 75. a third gear; 76. a third gear; 77. a gear cavity; 8. and a hand wheel.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-4, the utility model discloses a worm gear reducer, which comprises a shell 1, a worm wheel 3, a worm 2 and an output shaft 4, wherein the worm wheel 3, the worm 2 and the output shaft 4 are arranged in the shell 1, the worm 2 drives the worm wheel 3, the worm gear reducer comprises a sealing disc 5 and a fixing piece 6, an output through hole 33 for the output shaft 4 to pass through is arranged in the center of the worm wheel 3, an alignment through hole 111 which is matched with the sealing disc 5 in shape and size is arranged on the shell 1, the alignment through hole 111 is opposite to the output through hole 33, a matching through hole 121 for the output shaft 4 to pass through is arranged on the other side of the opposite alignment through hole 111 of the shell 1, a fixing hole 34 is arranged on the periphery of the output through hole 33, an extension ring 41 which extends towards the periphery is arranged at the end part of the output shaft 4, an extension hole 42 which is opposite to the fixing hole 34 is arranged on the extension ring 41, the sealing disc 5 is provided with a sealing disc 51 which is opposite to the fixing hole 34, the fixing piece 6 passes through the sealing disc 51 and the extension hole 42 and forms the fixing of the sealing disc 5, the output shaft 4 and 3, the sealing disc 5 is positioned in the alignment through hole 111 and is in rotary fit with the shell 1, the fixing piece 6 can be a screw, and the fixing piece 11, the fixing piece 11 can be the bolt, the whole can be removed, and the whole shell 11 can be removed, and the whole size and compared with the shell 1, and the efficiency can be compared with the case.

The casing 1 include casing 11 and lower casing 12 down, the through-hole 111 that aligns sets up in casing 11, the through-hole 121 that cooperates sets up in casing 12 down, casing 12 is provided with the annular arch 122 that is opposite with worm wheel 3 relatively near casing 11 one side down and cooperates through-hole 121 to extend and pass annular arch 122, casing 11 detachable sets up casing 12 down and forms the worm wheel accommodation chamber 13 that holds worm wheel 3 down, casing 11 has the worm accommodation chamber 14 that holds worm 2 and worm accommodation chamber 14 and worm wheel accommodation chamber 13 UNICOM, the diameter of output through-hole 33 is less than the diameter of counterpoint through-hole 111 makes output shaft 4 can get into smoothly in the output through-hole 33, after mounting 6 is fixed worm wheel 3, output shaft 4 and closing disk 5, because worm wheel 3 can't be through counterpoint through-hole 111, and worm wheel 3 bottom offsets with annular arch 122, the top offsets with last casing 11, form the rotation fixedly to 3.

The worm wheel 3 is provided with an annular part 31 and a sector part 32, the sector part 32 is positioned at the periphery of the annular part 31, the output through hole 33 is positioned at the center of the annular part 31, the sector part 32 is provided with a meshing part meshed with the worm 2, the sector part 32 is ninety degrees, the sector part 32 is not round, the manufacturing material is saved, and the use requirement can be met.

The side of the upper shell 11 relatively close to the lower shell 12 is provided with a limiting part 15, the limiting part 15 is located on the moving track of the fan-shaped part 32, and the limiting part 15 is arranged so as to limit the rotating angle of the output shaft 4.

The outer side of the upper shell 11 is provided with a screw 16 in threaded connection with the upper shell 11, the screw 16 is provided with an extension part 17 extending to the limit part 15, and the limit of the rotation angle of the fan-shaped part 32 can be further adjusted by the arrangement of the screw 16.

The upper shell 11 is further provided with a gear cavity 77, the driving rotating shaft 71, the driven rotating shaft 72, the first gear 73, the second gear 75 and the fourth gear 76 are arranged in the gear cavity 77, the driving rotating shaft 71 is provided with a driving end 711 extending out of the gear cavity 77, the first gear 73 is arranged on the driving rotating shaft 71 and synchronously rotates, the second gear 74 and the third gear 75 synchronously rotate on the driven rotating shaft 72, the first gear 73 is meshed with the second gear 74, the third gear 75 is meshed with the fourth gear 76, the fourth gear 76 synchronously rotates with the worm 2, the diameter of the first gear 73 is smaller than that of the second gear 74, the diameter of the third gear 75 is smaller than that of the fourth gear 76, when the screw 16 needs to be driven, the driving end is firstly used for rotating the first gear 73, then the driven rotating shaft 72 is driven to rotate, the third gear 75 is driven to rotate, and finally the fourth gear 76 is driven to rotate, and the diameter of the third gear 76 is smaller than that of the fourth gear 76 is larger than that of the fourth gear 76, and the diameter of the fourth gear 76 is larger than that of the fourth gear 74.

Including hand wheel 8, hand wheel 8 sets up in drive end 711 and is used for driving initiative pivot 71 rotation.

Specific examples: when the output shaft 4 needs to be replaced to meet the use requirements of different valve rods, the screw is detached, at the moment, the sealing disc 5 and the output shaft 4 can be taken out in sequence, then the output shaft 4 can be replaced or the output shaft 4 is subjected to secondary processing, the use requirements are met, the output shaft 4 passes through the alignment through hole 111 and enters the output through hole 33, the sealing disc 5 is placed above the output shaft 4, the fixing hole 34, the extending hole 42 and the sealing hole 51 are opposite, and the screw passes through to form fixation.

Claims

1. The utility model provides a worm gear speed reducer, includes casing (1) and sets up worm wheel (3), worm (2) and output shaft (4) in casing (1), and worm (2) constitute the drive to worm wheel (3), its characterized in that: including seal dish (5) and mounting (6), worm wheel (3) center is provided with output through-hole (33) that supply output shaft (4) to pass, be provided with on casing (1) with seal dish (5) shape size looks adaptation counterpoint through-hole (111) and counterpoint through-hole (111) are relative with output through-hole (33), the opposite side of casing (1) relative counterpoint through-hole (111) is provided with cooperation through-hole (121) that supply output shaft (4) to pass, output through-hole (33) periphery ring is equipped with fixed orifices (34), output shaft (4) tip is provided with extension ring (41) that extend to the periphery, be provided with on extension ring (41) with extension hole (42) that are relative with fixed orifices (34), be provided with on seal dish (5) with the sealed hole (51) that are relative with fixed orifices (34), mounting (6) pass seal dish (5) and with fixed orifices (34) formation seal dish (4) and (3), seal dish (5) are located counterpoint through-hole (111) and with worm wheel (1) normal running fit.

2. The worm gear reducer of claim 1, wherein: the casing (1) include casing (11) and lower casing (12), counterpoint through-hole (111) set up in casing (11) down, cooperation through-hole (121) set up in casing (12) down, casing (12) are close to casing (11) one side relatively down and are provided with annular protruding (122) and cooperation through-hole (121) relative with worm wheel (3) extend and pass annular protruding (122), go up casing (11) detachable and set up in casing (12) down and form worm wheel accommodation chamber (13) that hold worm wheel (3), go up casing (11) have and hold worm (2) hold chamber (14) and worm wheel accommodation chamber (13) UNICOM, the diameter of output through-hole (33) is less than the diameter of counterpoint through-hole (111).

3. The worm gear reducer of claim 2, wherein: the worm wheel (3) is provided with an annular part (31) and a sector part (32), the sector part (32) is positioned on the periphery of the annular part (31), the output through hole (33) is positioned at the center of the annular part (31), and the sector part (32) is provided with an engagement part engaged with the worm (2).

4. A worm gear reducer according to claim 3, characterized in that: one side of the upper shell (11) relatively close to the lower shell (12) is provided with a limiting part (15), and the limiting part (15) is positioned on the moving track of the fan-shaped part (32).

5. The worm gear reducer of claim 4, wherein: the outer side of the upper shell (11) is provided with a screw rod (16) in threaded connection with the upper shell (11), and the screw rod (16) is provided with an extension part (17) extending to the limiting part (15).

6. The worm gear reducer of claim 2, wherein: including initiative pivot (71), driven pivot (72), first gear (73), second gear (74), third gear (75) and fourth gear (76), go up casing (11) still have gear chamber (77), initiative pivot (71), driven pivot (72), first gear (73), second gear (74), third gear (75) and fourth gear (76) set up in gear chamber (77), initiative pivot (71) have drive end (711) that extend to outside gear chamber (77), first gear (73) set up in initiative pivot (71) and synchronous rotation, second gear (74) and third gear (75) synchronous rotation are in driven pivot (72), first gear (73) mesh with second gear (74), third gear (75) mesh with fourth gear (76), fourth gear (76) synchronous rotation with worm (2), the diameter of first gear (73) is less than the diameter of second gear (74), the diameter of third gear (75) is less than the diameter of fourth gear (76).

7. The worm gear reducer of claim 6, wherein: comprises a hand wheel (8), wherein the hand wheel (8) is arranged at a driving end (711) and is used for driving a driving rotating shaft (71) to rotate.