High-efficiency gearbox structure

Abstract

The utility model provides a high-efficiency gearbox structure which comprises a gearbox body, an input shaft and an output shaft are respectively connected inside the gearbox body, a first synchronizer and a third-gear gear are respectively sleeved on the input shaft, the first synchronizer is located on the left side of the third-gear gear, a first-gear gear, a second-gear gear and a second synchronizer are respectively sleeved on the output shaft, and the first-gear gear, the second-gear gear and the second synchronizer are respectively located on the left side of the third-gear gear. The first-gear gear and the second-gear gear are located on the left side and the right side of the second synchronizer respectively, and the outer circle of the first-gear gear and the outer circle of the second-gear gear are connected with the input shaft in a meshed mode through gear teeth. The left side and the right side of the gearbox body are connected with a first gear shifting air chamber and a second gear shifting air chamber respectively, the first gear shifting air chamber is connected with a second synchronizer through a shifting fork, and the second gear shifting air chamber is connected with a first synchronizer through a shifting fork. On the basis that original functions are reserved, the three-gear gear is additionally arranged, and the gear shifting function of three different gears and a neutral gear is achieved through different combinations of the first gear shifting air chamber and the second gear shifting air chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a high-efficiency gearbox structure. Background Art

[0002] The shifting structure of the existing wheel excavator transmission is shown in Figure (11-15), 1. input shaft; 2. synchronizer; 3. first gear; 4. second gear; 5. shift chamber; 6. output shaft; 7. transmission case; thereby achieving the shifting function, but this structure can only achieve the 2-gear function and has no neutral function. Utility Model Content

[0003] The utility model aims to provide a high-efficiency gearbox structure to overcome the above problems or at least partially solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is specifically implemented as follows:

[0005] The utility model provides a high-efficiency gearbox structure, including a gearbox case, wherein an input shaft and an output shaft are respectively connected to the interior of the gearbox case, a synchronizer 1 and a third-speed gear are respectively sleeved on the input shaft, the synchronizer 1 is located on the left side of the third-speed gear, and the synchronizer 1 is splined to the input shaft, and the third-speed gear is rotatably connected to the input shaft through a bearing, a first-speed gear, a second-speed gear and a synchronizer 2 are respectively sleeved on the output shaft, the first-speed gear and the second-speed gear are respectively located on the left and right side of the synchronizer 2, and the synchronizer 2 is splined to the output shaft, the first-speed gear and the second-speed gear are both rotatably connected to the output shaft through bearings, the outer circle of the third-speed gear is meshed with the output shaft through gear teeth, and the outer circles of the first-speed gear and the second-speed gear are both meshed with the input shaft through gear teeth.

[0006] The left side and right side of the transmission case are respectively connected to a shift chamber 1 and a shift chamber 2, wherein the shift chamber 1 is connected to the synchronizer 2 via a shift fork, and the shift chamber 2 is connected to the synchronizer 1 via a shift fork.

[0007] As a further solution of the present invention, the shift air chamber one includes a chamber body one, a piston head, a piston rod two, an air inlet one, an air inlet two and an air inlet three. The chamber body one is fixedly connected to the left side of the transmission case, and the interior of the chamber body one is respectively provided with a piston rod two and a piston head, and the piston head is arranged between the piston rod two and the chamber body one. The piston rod two moves along the chamber body one, and the outer end of the piston rod two is connected to a shift fork, which is arranged on the synchronizer two. The air inlet one, the air inlet two and the air inlet three are all opened on the chamber body one.

[0008] As a further solution of the present invention, the shift air chamber two includes a chamber body two, a spring, an air inlet four and a piston rod one. The chamber body one is fixedly connected to the right side of the transmission case. The interior of the chamber body two is respectively provided with a piston rod one and a spring, and the spring is arranged between the piston rod one and the chamber body two. The piston rod one moves along the chamber body two, and the outer end of the piston rod one is connected to a shift fork, which is arranged on the synchronizer one. The air inlet four is opened on the chamber body two and is connected to the interior of the chamber body two.

[0009] As a further solution of the present invention, the input shaft and the output shaft are both rotatably connected to the transmission case through bearings.

[0010] The utility model provides a high-efficiency gearbox structure, which has the beneficial effects of adding three gears while retaining the original functions, and realizing the shifting function of three different gears and a neutral position through different combinations between the shift chamber 1 and the shift chamber 2, thereby adding multiple gears and facilitating use under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a front view of the gearbox housing in the present invention.

[0014] Figure 3 It is a rear view of the gearbox case in the present invention.

[0015] Figure 4 It is a cross-sectional view of the AA point in the present invention.

[0016] Figure 5 It is a cross-sectional view of the BB portion of the present invention.

[0017] Figure 6 This is a cross-sectional view of the shift chamber 1 in the present invention when it is in neutral gear.

[0018] Figure 7 This is a cross-sectional view of the shift chamber 1 in the utility model when it is in first gear.

[0019] Figure 8 This is a cross-sectional view of the shift chamber 1 in the present invention when the second gear is engaged.

[0020] Figure 9 This is a cross-sectional view of the shift chamber 2 in the present invention when the third gear is engaged.

[0021] Figure 10 This is a cross-sectional view of the second shift chamber in the present invention when it is in neutral gear.

[0022] Figure 11 The diagram is a schematic diagram of the shifting structure of an existing wheel excavator gearbox.

[0023] Figure 12 Front view of an existing wheel-dig gearbox.

[0024] Figure 13 This is a rear view of an existing wheel-excavator gearbox.

[0025] Figure 14 The present invention is a cross-sectional view of a shift chamber in an existing wheel excavator transmission when the shift chamber is in first gear.

[0026] Figure 15 This is a cross-sectional view of the shift chamber in the existing wheel excavator transmission when it is in second gear.

[0027] In the figure: 1. Input shaft; 2. Synchronizer 1; 3. First gear; 4. Second gear; 5. Third gear; 6. Output shaft; 7. Synchronizer 2; 8. Transmission case; 9. Shift chamber 1; 10. Shift chamber 2; 11. Shift fork; 91. Chamber body 1; 92. Piston head; 93. Piston rod 2; 94. Air inlet 1; 95. Air inlet 2; 96. Air inlet 3; 101. Chamber body 2; 102. Spring; 103. Air inlet 4; 104. Piston rod 1. DETAILED DESCRIPTION

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] See also Figure 1-10, an embodiment of the present utility model provides a high-efficiency transmission structure, including a transmission case 8, the interior of the transmission case 8 is respectively connected to an input shaft 1 and an output shaft 6, the input shaft 1 is respectively sleeved with a synchronizer 2 and a third-speed gear 5, the synchronizer 2 is located on the left side of the third-speed gear 5, and the synchronizer 2 is splined to the input shaft 1, the third-speed gear 5 is rotatably connected to the input shaft 1 through a bearing, the output shaft 6 is respectively sleeved with a first-speed gear 3, a second-speed gear 4 and a synchronizer 2 7, the first-speed gear 3 and the second-speed gear 4 are respectively located on the left and right sides of the synchronizer 2 7, and the synchronizer 2 7 is splined to the output shaft 6, the first-speed gear 3 and the second-speed gear 4 are rotatably connected to the output shaft 6 through bearings, the outer circle of the third-speed gear 5 is meshed with the output shaft 6 through gear teeth, and the outer circles of the first-speed gear 3 and the second-speed gear 4 are both meshed with the input shaft 1 through gear teeth.

[0030] The left and right sides of the transmission case 8 are respectively connected to the shift chamber 1 9 and the shift chamber 2 10. The shift chamber 1 9 is connected to the synchronizer 2 7 through the shift fork 11, and the shift chamber 2 10 is connected to the synchronizer 1 2 through the shift fork 11.

[0031] The shift air chamber 1 9 includes a chamber body 1 91 , a piston head 92 , a piston rod 2 93 , an air inlet 1 94 , an air inlet 2 95 and an air inlet 3 96 . The chamber body 1 91 is fixedly connected to the left side of the transmission case 8 . The interior of the chamber body 1 91 is provided with a piston rod 2 93 and a piston head 92 . The piston head 92 is provided between the piston rod 2 93 and the chamber body 1 91 . The piston rod 2 93 moves along the chamber body 1 91 , and the outer end of the piston rod 2 93 is connected to a shift fork 11 , which is provided on the synchronizer 2 7 . The air inlet 1 94 , the air inlet 2 95 and the air inlet 3 96 are all provided on the chamber body 1 91 .

[0032] The shift air chamber 2 10 includes a chamber body 2 101, a spring 102, an air inlet 4 103 and a piston rod 104. The chamber body 1 91 is fixedly connected to the right side of the transmission case 8. The interior of the chamber body 2 101 is respectively provided with a piston rod 104 and a spring 102, and the spring 102 is arranged between the piston rod 104 and the chamber body 2 101. The piston rod 104 moves along the chamber body 2 101, and the outer end of the piston rod 104 is connected to the shift fork 11, and the shift fork 11 is arranged on the synchronizer 2. The air inlet 4 103 is opened on the chamber body 2 101 and is connected to the interior of the chamber body 2 101.

[0033] The input shaft 1 and the output shaft 6 are both rotatably connected to the transmission case 8 via bearings.

[0034] During use, the utility model:

[0035] Shift chamber 9 as Figure 4 As shown (AA section view),

[0036] When in neutral: air inlet 1 94---air cut-off, air inlet 2 95---air in, air inlet 3 96---air in;

[0037] At this time, the piston head 92 moves rightward to limit the position of the second piston rod 93. The second piston rod 93 is in the middle position and does not move, and drives the shift fork 11 to be stationary. At this time, the synchronizer 2 7 is not in contact with the first gear 3 and the second gear 4. At the same time, the synchronizer 1 2 is also in a stationary state and does not contact the third gear 5. Then, the input shaft 1 rotates and does not drive the output shaft 6.

[0038] When shifting to the first gear: air inlet 1 94--air cut-off, air inlet 2 95--air in, air inlet 3 96--air cut-off;

[0039] At this time, the piston rod 2 93 moves leftward, driving the shift fork 11 to move leftward, and synchronously drives the synchronizer 2 7 to move leftward, and meshes with the first gear 3 through the gear teeth. At the same time, the synchronizer 1 2 is in a stationary state and does not contact the third gear 5. Then, the input shaft 1 rotates and drives the first gear 3 to rotate through the gear teeth, and synchronously drives the synchronizer 2 7 to rotate, thereby driving the output shaft 6;

[0040] When shifting to the second gear: air inlet 1 94---intake, air inlet 2 95---stop, air inlet 3 96---stop;

[0041] At this time, the piston rod 2 93 moves rightward, driving the right wall of the shift fork 11, and synchronously driving the synchronizer 2 7 to move rightward, and meshing with the second gear 4 through the gear teeth. At the same time, the synchronizer 1 2 is in a stationary state and does not contact the third gear 5. Then, the input shaft 1 rotates and drives the second gear 4 to rotate through the gear teeth, and synchronously drives the synchronizer 2 7 to rotate, thereby driving the output shaft 6;

[0042] Shift chamber 2 10 as Figure 5 As shown (BB cross-sectional view),

[0043] When the gear is in neutral: air inlet 4 103 - air intake, spring 102 is compressed;

[0044] At this time, piston rod 104 moves to the right and compresses spring 102, driving shift fork 11 to approach third gear 5 and engage it. At the same time, synchronizer 2 7 is in a stationary state and does not contact first gear 3 and second gear 4. At this time, input shaft 1 rotates to drive third gear 5, which then synchronously drives synchronizer 2 to rotate, and then drives output shaft 6 through synchronizer 2.

[0045] When the gear is in neutral: the air inlet 4 103 is cut off, and the spring 102 is reset;

[0046] At this time, the spring 102 recovers its deformation and resets, which drives the piston rod 104 to move left and separate from the third gear 5, while driving the shift fork 11 away from the third gear 5. At the same time, the synchronizer 2 7 is in a stationary state and does not contact the first gear 3 and the second gear 4. At this time, the input shaft 1 rotates without driving the output shaft 6.

[0047] The above are merely embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A high-efficiency gearbox structure, comprising a gearbox housing (8), characterized in that: The interior of the gearbox housing (8) is connected to an input shaft (1) and an output shaft (6), respectively. The input shaft (1) is sleeved with a synchronizer (2) and a third gear (5), respectively. The synchronizer (2) is located on the left side of the third gear (5), and the synchronizer (2) and the input shaft (1) are connected by a spline. The third gear (5) is rotatably connected to the input shaft (1) through a bearing. The output shaft (6) is sleeved with a first gear (3), a second gear (4) and a Synchronizer 2 (7), the first gear (3) and the second gear (4) are respectively located on the left and right sides of the synchronizer 2 (7), and the synchronizer 2 (7) is connected to the output shaft (6) via a spline, the first gear (3) and the second gear (4) are both rotatably connected to the output shaft (6) via bearings, the outer circle of the third gear (5) is meshed with the output shaft (6) via gear teeth, and the outer circles of the first gear (3) and the second gear (4) are both meshed with the input shaft (1) via gear teeth; The left side and right side of the transmission case (8) are respectively connected to a first shift chamber (9) and a second shift chamber (10); the first shift chamber (9) is connected to the second synchronizer (7) via a shift fork (11); and the second shift chamber (10) is connected to the first synchronizer (2) via a shift fork (11).

2. A high-efficiency gearbox structure according to claim 1, characterized in that: The shift chamber 1 (9) includes a chamber body 1 (91), a piston head (92), a piston rod 2 (93), an air inlet 1 (94), an air inlet 2 (95) and an air inlet 3 (96). The chamber body 1 (91) is fixedly connected to the left side of the transmission case (8). The interior of the chamber body 1 (91) is provided with a piston rod 2 (93) and a piston head (92). The piston head (92) is provided between the piston rod 2 (93) and the chamber body 1 (91). The piston rod 2 (93) moves along the chamber body 1 (91). The outer end of the piston rod 2 (93) is connected to a shift fork (11). The shift fork (11) is provided on the synchronizer 2 (7). The air inlet 1 (94), the air inlet 2 (95) and the air inlet 3 (96) are all provided on the chamber body 1 (91).

3. A high-efficiency gearbox structure according to claim 2, characterized in that: The shift chamber 2 (10) includes a chamber body 2 (101), a spring (102), an air inlet 4 (103) and a piston rod 1 (104). The chamber body 1 (91) is fixedly connected to the right side of the transmission case (8). The interior of the chamber body 2 (101) is provided with a piston rod 1 (104) and a spring (102), and the spring (102) is provided between the piston rod 1 (104) and the chamber body 2 (101). The piston rod 1 (104) moves along the chamber body 2 (101), and the outer end of the piston rod 1 (104) is connected to a shift fork (11), which is provided on the synchronizer 1 (2). The air inlet 4 (103) is opened on the chamber body 2 (101) and communicates with the interior of the chamber body 2 (101).

4. A high-efficiency gearbox structure according to claim 1, characterized in that: The input shaft (1) and the output shaft (6) are both rotatably connected to the transmission case (8) via bearings.

Images