A housing structure of a two-stage reduction mechanism

Abstract

The utility model relates to a reduction mechanism technical field especially relates to a shell structure of two -stage reduction mechanism, including reduction gearbox, and reduction gearbox includes upper shell and lower shell, and the upper shell is shaped with first top output, reduction device includes first input main shaft and second output main shaft, and first input main shaft coaxially installs planetary gear set and first gear set, and second output main shaft both ends respectively to reduction gearbox outside extension, and second output main shaft is installed with the second gear set of first gear set meshing drive, and planetary gear output end is equipped with drive worm wheel, and first top output is installed with the output worm of longitudinal arrangement, and output worm is connected with drive worm wheel transmission, planetary gear set and worm output worm drive integration in same input main shaft, form two -stage reduction, planetary gear set realizes one -stage reduction, drives drive worm wheel rotation through planetary gear output end, and drive worm wheel and output worm meshing realize two -stage reduction, and through top output independent output power.

Description

Technical Field

[0001] This utility model relates to the field of deceleration mechanism technology, and in particular to the housing structure of a two-stage deceleration mechanism. Background Technology

[0002] The gearbox is the transmission system in fracturing equipment. It connects the crankcase and the engine's power input. Through the design of different speed variations of the gears inside the gearbox, the converted power is transmitted to the crankcase, thereby achieving the effect of deceleration and torque increase or speed increase and torque decrease, providing different transmission capabilities for fracturing equipment.

[0003] The utility model application CN222526800U discloses a gearbox with a 90-degree steering output, including an outer casing, an input shaft assembly, an intermediate shaft assembly meshing with the input shaft assembly, and an output shaft assembly meshing with the intermediate shaft assembly. The input shaft assembly is parallel to the intermediate shaft assembly and perpendicular to the output shaft assembly. The outer casing includes a housing and a bearing seat fixed to the lower end of the housing. The output shaft assembly includes a large bevel gear meshing with the intermediate shaft assembly and an output shaft bolted to the large bevel gear. The large bevel gear is installed in the housing, and the output shaft extends out of the housing and is installed in the bearing seat. The bearing seat contains an output end bearing assembly that mates with the output shaft and an output end oil seal assembly that seals both the bearing seat and the output shaft. The front and rear ends of the input shaft assembly extend out of the housing.

[0004] Most existing gearboxes have only one input and one output, which means they can only be used for transmission between a single system and have low practicality. Utility Model Content

[0005] The purpose of this invention is to provide a housing structure for a two-stage deceleration mechanism to address the shortcomings of existing technologies.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A housing structure for a two-stage reduction mechanism includes a reduction gearbox, which comprises an upper shell and a lower shell, with a reduction device disposed between the upper and lower shells. The upper shell has a first top output port. The reduction device includes a first input spindle and a second output spindle. A planetary gear set and a first gear set are coaxially mounted on the first input spindle. Both ends of the second output spindle extend outward from the reduction gearbox, and a second gear set that meshes with the first gear set is mounted on the second output spindle. The planetary gear set includes a planetary gear output end, and a drive worm gear is sleeved on the planetary gear output end. A longitudinally arranged output worm is mounted on the first top output port, and the output worm is connected to the drive worm gear.

[0008] Furthermore: the gearbox body is formed with a pair of first mounting shaft holes coaxially aligned with the first input main shaft and a pair of second mounting shaft holes coaxially aligned with the second output main shaft, wherein a first sealing cover is installed in one of the first mounting shaft holes.

[0009] Furthermore: a first support bearing is installed in the first mounting shaft hole, and the first support bearing is coaxially aligned with the first input spindle; a second support bearing is installed in the second mounting shaft hole, and the second support bearing is coaxially aligned with the second output spindle.

[0010] Furthermore: a bottom drive groove is formed at the bottom of the lower shell, a bottom bearing seat is installed in the bottom drive groove, and connecting shafts are formed at the bottom and top of the output worm gear, with the bottom connecting shaft connected to the bottom bearing seat.

[0011] Furthermore: A coupling is installed at the first top output port, the bottom of the coupling is coaxially connected to the connecting shaft at the top of the output worm, and the top of the coupling is connected to the first output shaft.

[0012] Furthermore: a sealing seat is installed at the first top output port, the sealing seat is formed with a first output hole coaxially aligned with the first output shaft, and a first output sealing bearing is installed in the first output hole and sleeved on the first output shaft.

[0013] Furthermore: the second gear set includes a first output gear and a second output gear coaxially connected. The first output gear meshes with the first gear set for transmission. The upper shell is formed with a second top output port, and a second output shaft is installed in the second top output port. The second output gear is connected to the second output shaft for transmission.

[0014] Furthermore: A first gearbox is installed at the bottom of the second top output port. The first gearbox is equipped with a first transmission gear that can rotate. The bottom of the first transmission gear meshes with the second output gear for transmission. The top of the first gearbox is connected to a second gearbox. The second gearbox is equipped with a spare output shaft and a second transmission gear coaxially installed on the spare output shaft. The bottom of the second transmission gear meshes with the first transmission gear for transmission.

[0015] Furthermore: the top of the second gearbox is connected to the third gearbox, the second gearbox is equipped with the second output shaft and the third transmission gear is coaxially mounted on the second output shaft, and the bottom of the third transmission gear meshes with the second transmission gear for transmission.

[0016] Furthermore: the second gearbox and the third gearbox are respectively formed with output holes, and guide sleeves are installed in the output holes. Sealed bearing sleeves are installed inside the guide sleeves, and shielding sleeves are detachably installed in the guide sleeves.

[0017] The beneficial effects of this invention are as follows: Dual output functionality is achieved through the extension of both ends of the second output spindle and the top output worm gear. The two ends of the second output spindle can drive mechanical systems in different directions respectively. The planetary gear set and the worm gear output worm drive are integrated into the same input spindle, forming a two-stage reduction. The planetary gear set achieves the first-stage reduction, and the output end of the planetary gear drives the worm gear to rotate, which in turn meshes with the output worm to achieve the second-stage reduction. Power is then independently output through the top output port. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the gearbox structure.

[0019] Figure 2 This is a schematic diagram of the exploded structure of the gearbox.

[0020] Figure 3 This is a cross-sectional view of the first top output port.

[0021] Figure 4 This is a cross-sectional view of the second top output port.

[0022] Figure 5 This is a magnified view of the second top output port.

[0023] The reference numerals in the figures include:

[0024] 1- Gearbox housing,

[0025] 11-Upper shell, 12-Lower shell, 13-First input spindle, 14-Planetary gear set, 15-Planetary gear output end, 16-First mounting shaft hole, 17-First sealing cover

[0026] 18-First support bearing, 19-First gear set,

[0027] 2-First top output port

[0028] 20-Drive worm gear, 21-Bottom drive groove, 22-Bottom bearing housing, 23-Output worm gear

[0029] 24-Connecting shaft, 25-Coupling, 26-First output shaft, 27-Sealing seat, 28-First output hole

[0030] 29-First output sealed bearing,

[0031] 3-Second output spindle,

[0032] 30 - Second gear set, 31 - First output gear, 32 - Second output gear, 33 - Second mounting shaft hole

[0033] 34-Second support bearing, 35-Second top output port, 36-Output hole,

[0034] 37-Guide sleeve, 38-Sealed bearing sleeve, 39-Shielding sleeve,

[0035] 4-First Gearbox

[0036] 41-First transmission gear, 42-Second gearbox, 43-Spare output shaft, 44-Second transmission gear

[0037] 45 - Third gearbox, 46 - Third transmission gear, 47 - Second output shaft. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings.

[0039] like Figure 1-5 As shown, the outer shell structure of a two-stage reduction mechanism includes a reduction gearbox 1, which includes an upper shell 11 and a lower shell 12. A reduction device is disposed between the upper shell 11 and the lower shell 12. The upper shell 11 is formed with a first top output port 2. The reduction device includes a first input spindle 13 and a second output spindle 3. The first input spindle 13 is coaxially mounted with a planetary gear set 14 and a first gear set 19. The two ends of the second output spindle 3 extend outward from the reduction gearbox 1, and the second output spindle 3 is mounted with a second gear set 30 that meshes with the first gear set 19. The planetary gear set 14 includes a planetary gear output end 15, and a drive worm gear 20 is sleeved on the planetary gear output end 15. The first top output port 2 is mounted with a longitudinally arranged output worm 23, which is connected to the drive worm gear 20 in a transmission manner.

[0040] It should be noted that the planetary gear output end 15 is an outer ring gear, and the drive worm gear 20 is fitted in the outer ring gear to achieve synchronous rotation.

[0041] The dual-output function is achieved through the extension of both ends of the second output spindle 3 and the output of the top output worm gear 23. The two ends of the second output spindle 3 can drive mechanical systems in different directions respectively. The planetary gear set 14 and the worm gear output worm gear 23 are integrated into the same input spindle to form a two-stage reduction. The planetary gear set 14 achieves the first-stage reduction, and drives the drive worm gear 20 to rotate through the planetary gear output end 15. The drive worm gear 20 meshes with the output worm gear 23 to achieve the second-stage reduction, and outputs power independently through the top output port.

[0042] Furthermore, the gearbox body 1 is formed with a pair of first mounting shaft holes 16 coaxially aligned with the first input spindle 13 and a pair of second mounting shaft holes 33 coaxially aligned with the second output spindle 3. One of the first mounting shaft holes 16 is fitted with a first sealing cover 17. The pair of first mounting shaft holes 16 coaxially aligned with the first input spindle 13 and the pair of second mounting shaft holes 33 coaxially aligned with the second output spindle 3 form a double-shaft hole precision positioning structure. The paired coaxial shaft holes can serve as a precise positioning reference during assembly. When assembling the first input spindle 13 and the second output spindle 3, there is no need to repeatedly calibrate the axis position, thus improving assembly efficiency.

[0043] Preferably, a first support bearing 18 is installed in the first mounting shaft hole 16, and the first support bearing 18 is coaxially aligned with the first input spindle 13. A second support bearing 34 is installed in the second mounting shaft hole 33, and the second support bearing 34 is coaxially aligned with the second output spindle 3. The coaxial installation of the first support bearing 18 and the first input spindle 13 can more evenly distribute the radial and axial loads borne by the first input spindle 13; the coaxial installation of the second support bearing 34 and the second output spindle 3 can more evenly distribute the radial and axial loads borne by the second output spindle 3.

[0044] Preferably, both the first support bearing 18 and the second support bearing 34 are sealed bearings, which can prevent the leakage of lubricating oil in the gearbox 1 and ensure the sealing of the gearbox 1.

[0045] Furthermore, the bottom of the lower shell 12 is formed with a bottom drive groove 21, and a bottom bearing seat 22 is installed in the bottom drive groove 21. The bottom and top of the output worm gear 23 are respectively formed with connecting shafts 24, and the bottom connecting shaft 24 is connected to the bottom bearing seat 22. The bottom of the output worm gear 23 is rotatably connected to the bottom bearing seat 22 through the connecting shaft 24, which improves the rotational stability of the output worm gear 23 and realizes stable rotational support for the output worm gear 23.

[0046] Specifically, a coupling 25 is installed at the first top output port 2. The bottom of the coupling 25 is coaxially connected to the connecting shaft 24 at the top of the output worm gear 23, and the top of the coupling 25 is connected to the first output shaft 26. A sealing seat 27 is installed at the first top output port 2. The sealing seat 27 has a first output hole 28 coaxially aligned with the first output shaft 26. A first output sealing bearing 29, sleeved on the first output shaft 26, is installed in the first output hole 28. The sealing seat 27 adopts a metal base and a rubber sealing lip structure, which, in conjunction with the first output sealing bearing 29, further improves the sealing level. This reduces the leakage of lubricating oil inside the housing.

[0047] Preferably, the coupling 25 can be an elastic coupling 25, such as a plum blossom-shaped elastic coupling 25, which can absorb more than 50% of the instantaneous impact load. The coupling 25 can buffer the impact through the deformation of the elastic body, avoiding tooth surface cracking of the output worm 23 and worm wheel due to impact, and extending the service life of the core components.

[0048] Specifically, the second gear set 30 includes a first output gear 31 and a second output gear 32 coaxially connected. The first output gear 31 meshes with the first gear set 19 for transmission, and the second output gear set 32 ​​meshes with the first gear set 19 of the first input spindle 13 for transmission, achieving synchronous rotation. The upper shell 11 is formed with a second top output port 35, and a second output shaft 47 is installed on the second top output port 35. The second output gear 32 is connected to the second output shaft 47 for transmission. The first output gear 31 and the second output gear 32 rotate synchronously. Under the transmission connection, the second output shaft 47 located at the second top output port 35 of the upper shell 11 can rotatably output power, achieving the effect of dual output in the vertical direction.

[0049] Furthermore, a first gearbox 4 is installed at the bottom of the second top output port 35. The first gearbox 4 is equipped with a rotatable first transmission gear 41, the bottom of which meshes with the second output gear 32. The top of the first gearbox 4 is connected to a second gearbox 42, which is equipped with a spare output shaft 43 and a second transmission gear 44 coaxially mounted on the spare output shaft 43. The bottom of the second transmission gear 44 meshes with the first transmission gear 41. The top of the second gearbox 42 is connected to a third gearbox 45, which is equipped with the second output shaft 47 and a third transmission gear 46 coaxially mounted on the second output shaft 47. The bottom of the third transmission gear 46 meshes with the second transmission gear 44.

[0050] In this embodiment, three gearboxes work together, each undertaking a specific transmission function. The first transmission gear 41 of the first gearbox 4, the second transmission gear 44 of the second gearbox 42, and the third transmission gear 46 of the third gearbox 45 are sequentially connected in series to form a gear set structure. The multi-stage gearboxes connected in series and the gears meshing with each other form a stable transmission link. The power of the second output main shaft 3 can be output to the second output shaft 47 installed on the third transmission gear 46, and the power is output by the second output shaft 47. At the same time, the second gearbox 42 is connected to the second transmission gear 44 through a spare output shaft 43. While transmitting power, it also reserves an additional spare output shaft 43, which can be used to drive auxiliary equipment. This adds a spare power output function to the entire transmission system, further enriching the application scenarios of the equipment.

[0051] Preferably, the second gearbox 42 and the third gearbox 45 are respectively formed with a second output hole 36. A guide sleeve 37 is installed in the second output hole 36. A sealing bearing sleeve 38 is installed inside the guide sleeve 37. A shielding sleeve 39 is detachably installed in the guide sleeve 37. The sealing bearing sleeve 38 has a sealing effect to prevent lubricating oil leakage. When the output shaft is not in use, the shielding sleeve 39 is placed on the guide sleeve 37 to shield the output shaft and prevent dust from being exposed and adhering.

[0052] In summary, this utility model possesses the aforementioned excellent characteristics, enabling it to achieve unprecedented efficiency in use and thus become a highly practical product.

[0053] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A housing structure for a two-stage reduction mechanism, comprising a reduction gearbox, the reduction gearbox including an upper shell and a lower shell, and a reduction device disposed between the upper shell and the lower shell, characterized in that: The upper shell is formed with a first top output port; the reduction device includes a first input spindle and a second output spindle. The first input spindle is coaxially mounted with a planetary gear set and a first gear set. The two ends of the second output spindle extend outward from the reduction gearbox body, and the second output spindle is mounted with a second gear set that meshes with the first gear set. The planetary gear set includes a planetary gear output end, and a drive worm gear is sleeved on the planetary gear output end. The first top output port is mounted with a longitudinally arranged output worm, and the output worm gear is connected to the drive worm gear.

2. The housing structure of a two-stage reduction mechanism according to claim 1, characterized in that: The gearbox body is formed with a pair of first mounting shaft holes coaxially aligned with the first input main shaft and a pair of second mounting shaft holes coaxially aligned with the second output main shaft, and a first sealing cover is installed in one of the first mounting shaft holes.

3. The housing structure of a two-stage reduction mechanism according to claim 2, characterized in that: The first mounting shaft hole is fitted with a first support bearing, which is coaxially aligned with the first input spindle. The second mounting shaft hole is fitted with a second support bearing, which is coaxially aligned with the second output spindle.

4. The housing structure of a two-stage reduction mechanism according to claim 1, characterized in that: The bottom of the lower shell is formed with a bottom drive groove, and a bottom bearing seat is installed in the bottom drive groove. The bottom and top of the output worm are respectively formed with connecting shafts, and the bottom connecting shaft is connected to the bottom bearing seat.

5. The housing structure of a two-stage reduction mechanism according to claim 4, characterized in that: A coupling is installed at the first top output port. The bottom of the coupling is coaxially connected to the connecting shaft at the top of the output worm gear, and the top of the coupling is connected to the first output shaft.

6. The housing structure of a two-stage reduction mechanism according to claim 5, characterized in that: The first top output port is equipped with a sealing seat, and the sealing seat is formed with a first output hole that is coaxially aligned with the first output shaft. The first output hole is fitted with a first output sealing bearing that is sleeved on the first output shaft.

7. The housing structure of a two-stage reduction mechanism according to claim 1, characterized in that: The second gear set includes a first output gear and a second output gear coaxially connected. The first output gear meshes with the first gear set for transmission. The upper shell is formed with a second top output port, and a second output shaft is installed in the second top output port. The second output gear is connected to the second output shaft for transmission.

8. The housing structure of a two-stage reduction mechanism according to claim 7, characterized in that: The bottom of the second top output port is equipped with a first gearbox, which is equipped with a first transmission gear that can rotate. The bottom of the first transmission gear meshes with the second output gear for transmission. The top of the first gearbox is connected to a second gearbox, which is equipped with a spare output shaft and a second transmission gear coaxially mounted on the spare output shaft. The bottom of the second transmission gear meshes with the first transmission gear for transmission.

9. The housing structure of a two-stage reduction mechanism according to claim 8, characterized in that: The top of the second gearbox is connected to the third gearbox. The second gearbox is equipped with the second output shaft and a third transmission gear coaxially mounted on the second output shaft. The bottom of the third transmission gear meshes with the second transmission gear for transmission.

10. The housing structure of a two-stage reduction mechanism according to claim 9, characterized in that: The second gearbox and the third gearbox are respectively formed with a second output hole. A guide sleeve is installed in the second output hole. A sealed bearing sleeve is installed inside the guide sleeve. A shielding sleeve is detachably installed in the guide sleeve.

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