Novel gearbox

Abstract

A gearbox body of the novel gearbox is provided with a power input shaft, a power output shaft and a gear shifting fork assembly, the gearbox body is provided with a first intermediate shaft in a rotating mode between the power input shaft and the power output shaft, and the first intermediate shaft is fixedly sleeved with a first driven gear and a second driven gear which are arranged at intervals in the axial direction. The first intermediate shaft is in transmission connection with the power output shaft through a gear transmission pair; the power input shaft is sleeved with a combined gear piece in an axial sliding mode, and the combined gear piece is connected with the power input shaft in a rotation stopping mode. The combined gear part comprises a first driving gear and a second driving gear; the gear shifting fork assembly comprises a movable shifting fork and a box body pin shaft rotationally installed on the gearbox body, the box body pin shaft is fixedly sleeved with a gear shifting wrench and a linkage swing arm, and the movable shifting fork is installed at the free end of the linkage swing arm. By means of the structural design, the LED lamp has the advantages of being novel in design, simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission device technology, and in particular to a novel gearbox. Background Technology

[0002] Chinese invention patent application number 202310441824.1, entitled "A Lightweight Gearbox Device," substantially discloses a gearbox device. Specifically, this lightweight gearbox device includes a drive motor, a gearbox housing, a shift fork assembly, a gearbox input shaft, an output hollow shaft, a differential assembly, a left half-shaft, and a right half-shaft. The gearbox input shaft and the output hollow shaft are arranged parallel to each other within the gearbox housing. The drive motor is fixed to the gearbox housing, and its drive shaft is connected to the gearbox input shaft. The gearbox input shaft is equipped with a main drive wheel, a first-gear drive wheel, and a second-gear drive wheel. The main drive wheel is fixedly connected to the middle of the gearbox input shaft, and the first-gear drive wheel and the second-gear drive wheel are sleeved on both sides of the main drive wheel. The output hollow shaft is fixedly connected to... The gearbox has a first-gear driven wheel and a second-gear driven wheel, with the first-gear driving wheel meshing with the first-gear driven wheel and the second-gear driving wheel meshing with the second-gear driven wheel. The shift fork assembly is fixed to the reducer housing, and the axial displacement of the shift fork assembly controls the main drive wheel to mesh with the first-gear driving wheel and the second-gear driving wheel respectively. The shift fork assembly includes a shift motor, a shift hub, a shift hub shaft, a shift fork, and a shift fork support. The drive shaft of the shift motor is fixedly connected to the shift hub shaft, and the shift hub is fixedly connected to the shift hub shaft. The surface of the shift hub is provided with a hub groove for axially moving the shift fork. The shift fork maintains axial movement and is connected to the shift fork support, which is fixed to the reducer housing. One end of the shift fork is fitted into the hub groove of the shift hub, and the other end is connected to an internal gear sleeve located on the outer circumference of the main drive wheel.

[0003] In the process of shifting gears in the aforementioned lightweight gearbox device, the shift motor drives the shift hub to rotate. The circumferential rotation of the shift hub is converted into the axial movement of the shift fork through the hub groove and the shift fork. This, in turn, drives the inner gear sleeve to move axially. The inner gear sleeve enables the main drive wheel to be connected to the first gear drive wheel or the second gear drive wheel respectively, thereby realizing the shifting.

[0004] It should be noted that the aforementioned lightweight gearbox device has the following drawbacks: the shift fork assembly includes a shift motor, a shift hub, a shift hub shaft, a shift fork, and a shift fork support. The shift fork assembly has a complex structure and high manufacturing cost, which in turn increases the overall manufacturing cost of the gearbox device. Utility Model Content

[0005] The purpose of this invention is to provide a novel gearbox that addresses the shortcomings of existing technologies. This novel gearbox features a novel design, simple structure, and low manufacturing cost.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0007] A novel gearbox includes a gearbox housing, a power input shaft, a power output shaft, and a shift fork assembly. The power input shaft and the power output shaft are arranged in parallel and spaced apart, and the power input shaft and the power output shaft are rotatably mounted on the gearbox housing via bearings.

[0008] The shift fork assembly is mounted on the gearbox housing, and the shift fork assembly includes a movable shift fork;

[0009] A first intermediate shaft is rotatably mounted on the gearbox housing between the power input shaft and the power output shaft via bearings. The first intermediate shaft is fastened with a first driven gear and a second driven gear arranged axially at intervals. The first intermediate shaft is connected to the power output shaft via a gear transmission pair.

[0010] The power input shaft is axially slidably fitted with a combined gear assembly, and the combined gear assembly is anti-rotatingly connected to the power input shaft; the combined gear assembly includes a first drive gear and a second drive gear;

[0011] The shift fork assembly also includes a housing pin that is rotatably mounted on the gearbox housing. The housing pin is fastened with a shift wrench and a linkage arm. The movable shift fork is mounted on the free end of the linkage arm.

[0012] The gearbox housing includes a lower housing and an upper housing that is screwed to the upper end of the lower housing. The upper housing is screwed to the housing flange with a corresponding housing pin, and the housing pin is rotatably installed in the center hole of the housing flange.

[0013] The fixed end of the linkage swing arm is fastened to the lower end of the housing pin, and the linkage swing arm is located inside the gearbox housing; the fixed end of the shift wrench is fastened to the upper end of the housing pin, and the shift wrench is located on the upper side of the upper housing.

[0014] The upper surface of the upper housing is screwed with a fixed positioning block, and the positioning block is provided with a first positioning hole, a second positioning hole and a third positioning hole;

[0015] The shift lever has a vertical through-hole in the middle, and a fixing pin is embedded in the hole.

[0016] When the fixed pin is inserted into the first positioning hole, the movable shift fork drives the combined gear component to slide axially relative to the power input shaft to the first gear position. At this time, the first driving gear meshes with the first driven gear, and the second driving gear disengages from the second driven gear.

[0017] When the fixed pin is inserted into the second positioning hole, the movable shift fork drives the combined gear assembly to slide axially relative to the power input shaft to the second gear position. At this time, the second driving gear meshes with the second driven gear, and the first driving gear disengages from the first driven gear.

[0018] When the fixed pin is inserted into the third positioning hole, the movable shift fork drives the combined gear assembly to slide axially relative to the power input shaft to the neutral position. At this time, the first driving gear disengages from the first driven gear and engages with it, and the second driving gear disengages from the second driven gear.

[0019] The upper housing is equipped with a transparent panel.

[0020] The movable fork is pivotally connected to the free end of the linkage arm via a pivot.

[0021] A brake disc located on the outside of the gearbox housing is fastened to one end of the power input shaft.

[0022] The gearbox housing has a second intermediate shaft rotatably mounted between the first intermediate shaft and the power output shaft via a bearing. The first intermediate shaft and the second intermediate shaft are connected by a first gear pair, and the second intermediate shaft is connected to the power output shaft by a second gear pair.

[0023] Compared with existing technologies, this utility model has the following advantages: Specifically, the shift fork assembly of this utility model consists of a shift lever, a housing pin, a linkage swing arm, and a movable shift fork. Compared with the shift fork assemblies in the prior art, the shift fork assembly of this utility model has a simpler structure and lower manufacturing cost, which can effectively reduce the overall manufacturing cost of the gearbox and simplify the overall structure of the gearbox. Therefore, the novel gearbox of this utility model has the advantages of novel design, simple structure, and low manufacturing cost. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a partial structural schematic diagram of the present invention.

[0027] Figure 3 This is a schematic diagram of the shift fork assembly of this utility model.

[0028] exist Figures 1 to 3 This includes:

[0029] 1-Gearbox housing; 11-Lower housing; 12-Upper housing; 2-Power input shaft; 3-Power output shaft; 4-Shift fork assembly; 41-Moving shift fork; 42-Hoistbox pin; 43-Shift wrench; 431-Pin hole; 44-Linkage swing arm; 45-Hoistbox flange; 46-Locking block; 461-First positioning hole; 462-Second positioning hole; 463-Third positioning hole; 47-Fixing pin; 48-Pivot; 51-First intermediate shaft; 52-Second intermediate shaft; 61-First driven gear; 62-Second driven gear; 7-Combined gear assembly; 71-First driving gear; 72-Second driving gear; 8-Transparent panel; 9-Brake disc; 101-First gear pair; 102-Second gear pair. Detailed Implementation

[0030] The present invention will now be described in conjunction with specific embodiments.

[0031] Example 1, as Figures 1 to 3 As shown, a novel gearbox includes a gearbox housing 1, a power input shaft 2, a power output shaft 3, and a shift fork assembly 4. The power input shaft 2 and the power output shaft 3 are arranged in parallel and spaced apart, and the power input shaft 2 and the power output shaft 3 are rotatably mounted on the gearbox housing 1 through bearings.

[0032] Among them, such as Figure 2 and Figure 3 As shown, the shift fork assembly 4 is mounted on the gearbox housing 1, and the shift fork assembly 4 includes a movable shift fork 41.

[0033] Furthermore, such as Figure 1 As shown, a first intermediate shaft 51 is rotatably mounted on the gearbox housing 1 between the power input shaft 2 and the power output shaft 3 via a bearing. The first intermediate shaft 51 is fastened with a first driven gear 61 and a second driven gear 62 arranged axially at intervals. The first intermediate shaft 51 is connected to the power output shaft 3 through a gear transmission pair.

[0034] Furthermore, such as Figure 1As shown, a combined gear assembly 7 is axially slidably mounted on the power input shaft 2, and the combined gear assembly 7 is anti-rotatingly connected to the power input shaft 2. The combined gear assembly 7 includes a first driving gear 71 and a second driving gear 72. It should be explained that a guide key is installed between the combined gear assembly 7 and the power input shaft 2. The guide key can be screwed onto the power input shaft 2 with a locking screw. The guide key between the combined gear assembly 7 and the power input shaft 2 serves two purposes: firstly, it prevents rotation between the two, and secondly, it guides the sliding movement of the combined gear assembly 7.

[0035] Furthermore, for the combined gear component 7 in this embodiment, there is a groove structure between the first driving gear 71 and the second driving gear 72, and the movable fork 41 partially falls into the groove structure to ensure that the movable fork 41 can drive the combined gear component 7 to move axially along the power input shaft 2 when moving.

[0036] In addition, such as Figure 2 and Figure 3 As shown, the shift fork assembly 4 also includes a housing pin 42 rotatably mounted on the gearbox housing 1. The housing pin 42 is fastened with a shift wrench 43 and a linkage arm 44. The movable shift fork is mounted on the free end of the linkage arm 44.

[0037] In the case of the shift fork assembly 4 in this embodiment, when in use, the shift wrench 43 is rotated and the housing pin 42 is rotated. The rotating housing pin 42 drives the linkage swing arm 44 to rotate synchronously. During this process, the free end of the linkage swing arm 44 drives the movable shift fork 41 to move. The moving movable shift fork 41 drives the combined gear component 7 to move along the axial direction of the power input shaft 2, so as to realize the shift position movement of the combined gear component 7.

[0038] It should be noted that when the shift fork assembly 4 drives the combined gear 7 to the first gear position, the first driving gear 71 meshes with the first driven gear 61. At this time, the second driving gear 72 disengages from the second driven gear 62. The power input shaft 2 drives the first intermediate shaft 51 to rotate through the gear pair composed of the first driving gear 71 and the first driven gear 61. The first intermediate shaft 51 then drives the power output shaft 3 to rotate through the gear transmission pair and realizes power output.

[0039] When the shift fork assembly 4 drives the combined gear 7 to the second gear position, the second driving gear 72 meshes with the second driven gear 62. At this time, the first driving gear 71 disengages from the first driven gear 61. The power input shaft 2 drives the first intermediate shaft 51 to rotate through the gear pair composed of the second driving gear 72 and the second driven gear 62. The first intermediate shaft 51 then drives the power output shaft 3 to rotate through the gear transmission pair and realizes power output.

[0040] It should be emphasized that the shift fork assembly 4 in this embodiment is composed of a shift lever 43, a housing pin 42, a linkage swing arm 44 and a movable shift fork 41. Compared with the shift fork assembly 4 in the prior art, the shift fork assembly 4 in this embodiment has a simpler structure and lower manufacturing cost.

[0041] In summary, the novel gearbox of this embodiment has the advantages of novel design, simple structure and low manufacturing cost through the above structural design.

[0042] Example 2, as Figure 2 and Figure 3 As shown, the difference between this embodiment 2 and embodiment 1 is that the gearbox housing 1 includes a lower housing 11 and an upper housing 12 that is screwed to the upper end of the lower housing 11. The upper housing 12 is screwed to the housing flange 45 corresponding to the housing pin 42. The housing pin 42 is rotatably installed in the center hole of the housing flange 45.

[0043] The fixed end of the linkage swing arm 44 is fastened to the lower end of the housing pin 42, and the linkage swing arm 44 is located inside the gearbox housing 1; the fixed end of the shift wrench 43 is fastened to the upper end of the housing pin 42, and the shift wrench 43 is located on the upper side of the upper housing 12.

[0044] Example 3, as Figure 2 and Figure 3 As shown, the difference between this embodiment 3 and embodiment 2 is that the upper surface of the upper housing 12 is screwed with a fixed positioning block 46, and the positioning block 46 is provided with a first positioning hole 461, a second positioning hole 462 and a third positioning hole 463.

[0045] The shift wrench 43 has a vertical through-hole 431 in the middle, and a fixing pin 47 is embedded in the hole 431.

[0046] Specifically, when the fixing pin 47 is inserted into the first positioning hole 461, the movable shift fork 41 drives the combined gear component 7 to slide axially relative to the power input shaft 2 to the first gear position. At this time, the first driving gear 71 meshes with the first driven gear 61, and the second driving gear 72 disengages from the second driven gear 62.

[0047] When the fixed pin 47 is inserted into the second positioning hole 462, the movable shift fork 41 drives the combined gear component 7 to slide axially relative to the power input shaft 2 to the second gear position. At this time, the second driving gear 72 meshes with the second driven gear 62, and the first driving gear 71 disengages from the first driven gear 61.

[0048] When the fixed pin 47 is inserted into the third positioning hole 463, the movable shift fork 41 drives the combined gear component 7 to slide axially relative to the power input shaft 2 to the neutral position. At this time, the first driving gear 71 disengages from the first driven gear 61 and engages with it, and the second driving gear 72 disengages from the second driven gear 62.

[0049] It should be noted that by selectively inserting and engaging the first positioning hole 461, the second positioning hole 462, and the third positioning hole 463 with the fixing pin 47, this embodiment 3 can make the shift wrench 43 stably and reliably positioned in the corresponding gear position, with good stability and reliability.

[0050] Example 4, as Figure 2 As shown, the difference between this embodiment four and embodiment two is that the upper box 12 is equipped with a transparent plate 8.

[0051] The viewing plate 8 of this embodiment can be made of plexiglass; in use, the new gearbox of this embodiment can be viewed through the viewing plate 8 to see the inside of the gearbox housing 1.

[0052] Example 5, as Figure 3 As shown, the difference between this fifth embodiment and the first embodiment is that the movable fork is pivotally connected to the free end of the linkage arm 44 via the pivot 48.

[0053] Example 6, as Figure 1 and Figure 2 As shown, the difference between this sixth embodiment and the first embodiment is that a brake disc located on the outside of the gearbox housing 1 is fastened to one end of the power input shaft 2.

[0054] The brake disc 9 in this embodiment 6 is used in conjunction with the corresponding brake to facilitate braking.

[0055] Example 7, as Figure 1 As shown, the difference between this embodiment seven and embodiment one is that: a second intermediate shaft 52 is rotatably mounted on the gearbox housing 1 between the first intermediate shaft 51 and the power output shaft 3 via a bearing; the first intermediate shaft 51 and the second intermediate shaft 52 are connected by a first gear pair 101; and the second intermediate shaft 52 and the power output shaft 3 are connected by a second gear pair 102.

[0056] 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 novel gearbox, comprising a gearbox housing (1), a power input shaft (2), a power output shaft (3), and a shift fork assembly (4), wherein the power input shaft (2) and the power output shaft (3) are arranged in parallel and spaced apart, and the power input shaft (2) and the power output shaft (3) are respectively rotatably mounted on the gearbox housing (1) via bearings. The shift fork assembly (4) is mounted on the gearbox housing (1), and the shift fork assembly (4) includes a movable shift fork (41). Its features are: The gearbox housing (1) has a first intermediate shaft (51) rotatably mounted between the power input shaft (2) and the power output shaft (3) via bearings. The first intermediate shaft (51) is fastened with a first driven gear (61) and a second driven gear (62) arranged axially at intervals. The first intermediate shaft (51) is connected to the power output shaft (3) via a gear transmission pair. The power input shaft (2) is axially slidably fitted with a combined gear component (7), and the combined gear component (7) is anti-rotatingly connected to the power input shaft (2); the combined gear component (7) includes a first driving gear (71) and a second driving gear (72); The shift fork assembly (4) also includes a housing pin (42) rotatably mounted on the gearbox housing (1), the housing pin (42) is fastened with a shift wrench (43) and a linkage arm (44), and the movable shift fork is mounted on the free end of the linkage arm (44).

2. A novel gearbox according to claim 1, characterized in that: The gearbox housing (1) includes a lower housing (11) and an upper housing (12) screwed to the upper end of the lower housing (11). The upper housing (12) is screwed to the housing flange (45) corresponding to the housing pin (42). The housing pin (42) is rotatably installed in the center hole of the housing flange (45). The fixed end of the linkage swing arm (44) is fastened to the lower end of the housing pin (42), and the linkage swing arm (44) is located inside the gearbox housing (1); the fixed end of the shift wrench (43) is fastened to the upper end of the housing pin (42), and the shift wrench (43) is located on the upper side of the upper housing (12).

3. A novel gearbox according to claim 2, characterized in that: The upper surface of the upper housing (12) is screwed with a fixed positioning block (46), and the positioning block (46) has a first positioning hole (461), a second positioning hole (462) and a third positioning hole (463). The shift lever (43) has a vertical through pin hole (431) in the middle, and a fixing pin (47) is embedded in the pin hole (431). When the fixing pin (47) is inserted into the first positioning hole (461), the movable shift fork (41) drives the combined gear component (7) to slide axially relative to the power input shaft (2) to the first gear position. At this time, the first driving gear (71) meshes with the first driven gear (61), and the second driving gear (72) disengages from the second driven gear (62). When the fixed pin (47) is inserted into the second positioning hole (462), the movable shift fork (41) drives the combined gear component (7) to slide axially relative to the power input shaft (2) to the second gear position. At this time, the second driving gear (72) meshes with the second driven gear (62), and the first driving gear (71) disengages from the first driven gear (61). When the fixed pin (47) is inserted into the third positioning hole (463), the movable shift fork (41) drives the combined gear component (7) to slide axially relative to the power input shaft (2) to the neutral position. At this time, the first driving gear (71) disengages from the first driven gear (61) and engages with it, and the second driving gear (72) disengages from the second driven gear (62).

4. A novel gearbox according to claim 2, characterized in that: The upper box (12) is equipped with a transparent panel (8).

5. A novel gearbox according to claim 1, characterized in that: The movable fork is pivotally connected to the free end of the linkage arm (44) via a pivot (48).

6. A novel gearbox according to claim 1, characterized in that: A brake disc located on the outside of the gearbox housing (1) is fastened to one end of the power input shaft (2).

7. A novel gearbox according to claim 1, characterized in that: The gearbox housing (1) has a second intermediate shaft (52) rotatably mounted between the first intermediate shaft (51) and the power output shaft (3) via a bearing. The first intermediate shaft (51) and the second intermediate shaft (52) are connected by a first gear pair (101), and the second intermediate shaft (52) is connected by a second gear pair (102).

Images