A mine-used underground mechanical power gear shift transmission

Abstract

The application discloses a mine underground mechanical power gear shifting transmission, which comprises an input component, a front two-axis component, a reverse three-axis component, a one-gear shaft component, a four-gear shaft component and an output component. The input component comprises an input shaft and an input gear. The front two-axis component comprises a front two-clutch shaft, a front advance clutch gear, a front advance gear, a front advance clutch and a two-gear clutch. The reverse three-axis component comprises a reverse three-clutch shaft, a reverse gear clutch gear, a three-gear clutch gear, a one-gear transmission pinion, a reverse gear, a reverse gear clutch and a three-gear clutch. The one-gear shaft component comprises a one-gear shaft, a one-gear clutch gear, a two-gear clutch gear, a one-gear output gear and a one-gear clutch. The four-gear shaft component comprises a four-gear shaft, a four-gear clutch gear, a four-gear and a four-gear clutch. The output component comprises an output shaft and an output gear. The application has eight balanced gears in front and back, meets the underground working conditions and has a compact structure.

Description

Technical Field

[0001] This invention relates to the field of transmission technology, and more particularly to a power shift transmission for underground mining machinery. Background Technology

[0002] Currently, the most widely used transmission system in mining machinery applications is engine-hydraulic torque converter-power shift transmission-axle, with the power shift transmission being a key component. Power shift transmissions rely on the engagement and disengagement of clutches connected to gears or shafts to achieve gear shifting. The engagement and disengagement times are very short, allowing for gear shifts without interrupting power. Due to the narrowness and harsh conditions of underground tunnels, higher demands are placed on transmissions. For example, turning around is inconvenient in underground vehicles, which are often designed for left-right driving. Therefore, the transmission needs to operate in both forward and reverse directions with consistent performance, and its structure needs to be more compact. Furthermore, the complex underground conditions require multiple gears to meet various operating conditions. Existing power shift transmissions are mostly designed for traditional construction machinery vehicles, either with too few gears to meet the needs of multiple operating conditions, or with more forward gears than reverse gears, failing to meet the high-frequency reverse gear usage requirements of underground machinery, or with overly bulky structures that do not meet the size requirements of narrow tunnels. Currently, there is no reasonable solution that can simultaneously address the special operating conditions of underground mining machinery. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a power shift transmission that features a balanced design for both forward and reverse operation, occupies minimal space, and is suitable for the operating environment of mining machinery.

[0004] Specifically, the technical solution of the present invention is as follows:

[0005] This invention provides a power shift transmission for underground mining machinery, comprising an input component, a front two-shaft component, a reverse three-shaft component, a first gear shaft component, a fourth gear shaft component, and an output component.

[0006] The input component includes an input shaft and an input gear connected to the input shaft;

[0007] The front two-shaft assembly includes a front two-clutch shaft, and a forward gear clutch gear, a forward gear gear, a forward gear clutch, and a second gear clutch connected to the front two-clutch shaft.

[0008] The reverse three-shaft component includes a reverse three-clutch shaft, and a reverse clutch gear, a third-gear clutch gear, a first-gear transmission pinion, a reverse gear, a reverse clutch, and a third-gear clutch connected to the reverse three-clutch shaft;

[0009] The first gear shaft component includes a first gear shaft, and a first gear clutch gear, a second gear clutch gear, a first gear output gear, and a first gear clutch connected to the first gear shaft;

[0010] The four-speed shaft component includes a four-speed shaft, and a four-speed clutch gear, a four-speed gear, and a four-speed clutch connected to the four-speed shaft;

[0011] The output component includes an output shaft and an output gear connected to the output shaft;

[0012] The input gear meshes with the forward gear clutch gear and the reverse gear clutch gear respectively. The forward gear meshes with the reverse gear. The second gear clutch gear meshes with the third gear clutch gear. The first gear clutch gear meshes with the first gear transmission pinion and the fourth gear clutch gear respectively. The fourth gear meshes with the first gear output gear and the output gear respectively.

[0013] In some embodiments, the power shift transmission further includes a housing component, the housing component comprising a housing, and the input component, the front second axle component, the reverse third axle component, the first gear axle component, the fourth gear axle component, and the output component are all mounted on the housing component.

[0014] In some embodiments, the input shaft, the first two clutch shaft, the third reverse clutch shaft, the first gear shaft, the fourth gear shaft, and the output shaft are respectively supported on the housing by bearings.

[0015] In some embodiments, the forward gear clutch gear, reverse gear clutch gear, third gear clutch gear, first gear clutch gear, and fourth gear clutch gear are respectively connected to their corresponding shafts via bearings; the input gear, first gear transmission pinion, second gear clutch gear, first gear output gear, fourth gear gear, and output gear are respectively connected to their corresponding shafts via splines; and the forward gear and reverse gear are respectively connected to their corresponding shafts via interference fits.

[0016] In some embodiments, the power shift transmission further includes a control valve for controlling the on / off state of each clutch.

[0017] In some embodiments, the forward gear clutch, second gear clutch, reverse gear clutch, third gear clutch, first gear clutch, and fourth gear clutch are all wet multi-plate friction clutches.

[0018] In some embodiments, the forward clutch, second gear clutch, reverse clutch, third gear clutch, first gear clutch, and fourth gear clutch are all connected to the corresponding shafts via splines.

[0019] In some embodiments, the power shift transmission includes four forward gears and four reverse gears.

[0020] In some embodiments, the gear positions of the power shift transmission are implemented as follows: the forward gear clutch and the first gear clutch engage to shift to first gear; the forward gear clutch and the second gear clutch engage to shift to second gear; the forward gear clutch and the third gear clutch engage to shift to third gear; the forward gear clutch and the fourth gear clutch engage to shift to fourth gear; the reverse gear clutch and the first gear clutch engage to shift to first gear; the reverse gear clutch and the second gear clutch engage to shift to second gear; the reverse gear clutch and the third gear clutch engage to shift to third gear; and the reverse gear clutch and the fourth gear clutch engage to shift to fourth gear.

[0021] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0022] 1. The power shift transmission of the present invention has four forward gears and four reverse gears, for a total of eight gears, which are balanced and cover most of the operating conditions of underground mining machinery.

[0023] 2. The power shift transmission of the present invention has a simple structure and a compact longitudinal arrangement. The height of the gearbox is smaller than that of traditional engineering machinery transmissions, making it suitable for use in narrow alleyways. Attached Figure Description

[0024] The preferred embodiments will be described below in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of a power shift transmission for underground mining machinery.

[0025] Figure 1 This is a schematic diagram of the structure of a power shift transmission for underground mining machinery according to an embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027] Ⅰ. Housing components; Ⅱ. Reverse three-axis components; Ⅲ. Input components; Ⅳ. Front two-axis components; Ⅴ. Control valve; Ⅵ. First gear shaft components; Ⅶ. Fourth gear shaft components; Ⅷ. Output components;

[0028] 1. Reverse gear clutch gear, 2. Reverse gear clutch, 3. Reverse gear gear, 4. Third gear clutch, 5. Third gear clutch gear, 6. Reverse third gear clutch shaft, 7. Input shaft, 8. Input gear, 9. First second gear clutch shaft, 10. Forward gear clutch gear, 11. Forward gear clutch, 12. Forward gear gear, 13. Second gear clutch, 14. Second gear clutch gear, 15. First gear clutch gear, 16. First gear clutch, 17. First gear output gear, 18. First gear shaft, 19. Fourth gear shaft, 20. Fourth gear clutch gear, 21. Fourth gear clutch, 22. Fourth gear, 23. Output shaft, 24. Output gear, 25. Housing, 26. First gear transmission pinion. Detailed Implementation

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0030] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In one embodiment, refer to the appendix to the specification. Figure 1 This invention provides a power shift transmission for underground mining machinery, comprising a housing component I, an input component III, a front two-shaft component IV, a reverse three-shaft component II, a first-speed shaft component VI, a fourth-speed shaft component VII, an output component VIII, and a control valve V.

[0035] The housing component I includes a housing 25, and the input component III, the front two-axis component IV, the reverse three-axis component II, the first-speed shaft component VI, the fourth-speed shaft component VII, and the output component VIII are all mounted on the housing 25.

[0036] The input component III includes an input shaft 7 and an input gear 8 connected to the input shaft 7 via a spline;

[0037] The front two-shaft component IV includes a front two-clutch shaft 9, a forward gear clutch gear 10 connected to the front two-clutch shaft 9 via a bearing, a forward gear 12 connected to the front two-clutch shaft 9 via an interference fit, and a forward clutch 11 and a second-gear clutch 13 respectively connected to the front two-clutch shaft 9 via splines.

[0038] The reverse three-shaft component II includes a reverse three-clutch shaft 6, a reverse clutch gear 1 and a third-gear clutch gear 5 connected to the reverse three-clutch shaft 6 via bearings, a first-gear transmission pinion 26 connected to the reverse three-clutch shaft 6 via splines, a reverse gear 3 connected to the reverse three-clutch shaft 6 via interference fit, and a reverse clutch 2 and a third-gear clutch 4 connected to the reverse three-clutch shaft 6 via splines.

[0039] The first gear shaft component VI includes a first gear shaft 18, a first gear clutch gear 15 connected to the first gear shaft 18 via a bearing, a second gear clutch gear 14 and a first gear output gear 17 connected to the first gear shaft 18 via splines, and a first gear clutch 16 connected to the first gear shaft 18 via splines.

[0040] The four-speed shaft component VII includes a four-speed shaft 19, a four-speed clutch gear 20 connected to the four-speed shaft 19 via a bearing, a four-speed gear 22 connected to the four-speed shaft 19 via a spline, and a four-speed clutch 21 connected to the four-speed shaft 19 via a spline.

[0041] The output component VIII includes an output shaft 23 and an output gear 24 connected to the output shaft 23 via a spline;

[0042] The input shaft 7, the first two clutch shaft 9, the third reverse clutch shaft 6, the first gear shaft 18, the fourth gear shaft 19, and the output shaft 23 are respectively supported on the housing 25 by bearings;

[0043] The control valve 5 is installed on the housing 25 and is used to control the on / off state of each clutch.

[0044] The forward gear clutch 11, second gear clutch 13, reverse gear clutch 2, third gear clutch 4, first gear clutch 16, and fourth gear clutch 21 are all wet multi-plate friction clutches.

[0045] The input gear 8 on the input shaft 7 meshes with the forward gear clutch gear 10 on the first second clutch shaft 9 and the reverse gear clutch gear 1 on the third reverse clutch shaft 6. The forward gear 12 on the first second clutch shaft 9 meshes with the reverse gear gear 3 on the third reverse clutch shaft 6. The second gear clutch gear 14 on the first gear shaft 18 meshes with the third gear clutch gear 5 on the third reverse clutch shaft 6. The first gear clutch gear 15 on the first gear shaft 18 meshes with the first gear transmission pinion 26 on the third reverse clutch shaft 6 and the fourth gear clutch gear 20 on the fourth gear shaft 19. The fourth gear 22 on the fourth gear shaft 19 meshes with the first gear output gear 17 on the first gear shaft 18 and the output gear 24 on the output shaft 23.

[0046] The power shift transmission in this embodiment has eight gears, including four forward gears and four reverse gears. The gears are implemented as follows: the forward gear clutch 11 and the first gear clutch 16 engage to engage forward first gear; the forward gear clutch 11 and the second gear clutch 13 engage to engage forward second gear; the forward gear clutch 11 and the third gear clutch 4 engage to engage forward third gear; the forward gear clutch 11 and the fourth gear clutch 21 engage to engage forward fourth gear; the reverse gear clutch 2 and the first gear clutch 16 engage to engage reverse first gear; the reverse gear clutch 2 and the second gear clutch 13 engage to engage reverse second gear; the reverse gear clutch 2 and the third gear clutch 4 engage to engage reverse third gear; and the reverse gear clutch 2 and the fourth gear clutch 21 engage to engage reverse fourth gear.

[0047] The following is in conjunction with the instruction manual appendix. Figure 1 This embodiment details the specific implementation of the eight-gear power shift transmission:

[0048] First gear forward: Control valve V controls the engagement of forward gear clutch 11 and first gear clutch 16, and power is transmitted through the following route: input shaft 7 → input gear 8 → forward gear clutch gear 10 → forward gear clutch 11 → forward gear gear 12 → reverse gear gear 3 → third gear clutch shaft 6 → first gear transmission pinion 26 → first gear clutch gear 15 → first gear clutch 16 → first gear shaft 18 → first gear output gear 17 → fourth gear gear 22 → output gear 24 → output shaft 23;

[0049] Forward Second Gear: Control valve V controls the engagement of forward gear clutch 11 and second gear clutch 13, and power is transmitted through the following route: input shaft 7 → input gear 8 → forward gear clutch gear 10 → forward gear clutch 11 → forward gear gear 12 → second gear clutch 13 → second gear clutch gear 14 → first gear shaft 18 → first gear output gear 17 → fourth gear gear 22 → output gear 24 → output shaft 23;

[0050] Forward third gear: Control valve V controls the engagement of forward clutch 11 and third gear clutch 4, and power is transmitted through the following route: input shaft 7 → input gear 8 → forward clutch gear 10 → forward clutch 11 → forward gear gear 12 → reverse gear gear 3 → third gear clutch 4 → third gear clutch gear 5 → second gear clutch gear 14 → first gear shaft 18 → first gear output gear 17 → fourth gear gear 22 → output gear 24 → output shaft 23;

[0051] Forward fourth gear: Control valve V controls the engagement of forward clutch 11 and fourth gear clutch 21. Power is transmitted through the following route: input shaft 7 → input gear 8 → forward clutch gear 10 → forward clutch 11 → forward gear 12 → reverse gear 3 → third-reverse clutch shaft 6 → first gear transmission pinion 26 → first gear clutch gear 15 → fourth gear clutch gear 20 → fourth gear clutch 21 → fourth gear shaft 19 → fourth gear 22 → output gear 24 → output shaft 23;

[0052] Reverse first gear: Control valve V controls the engagement of reverse clutch 2 and first gear clutch 16, and power is transmitted through the following route: input shaft 7 → input gear 8 → reverse clutch gear 1 → reverse clutch 2 → reverse gear 3 → third-reverse clutch shaft 6 → first gear transmission pinion 26 → first gear clutch gear 15 → first gear clutch 16 → first gear shaft 18 → first gear output gear 17 → fourth gear gear 22 → output gear 24 → output shaft 23;

[0053] Reverse Second Gear: Control valve V controls the engagement of reverse clutch 2 and second gear clutch 13, and power is transmitted through the following route: input shaft 7 → input gear 8 → reverse clutch gear 1 → reverse clutch 2 → reverse gear 3 → forward gear 12 → second gear clutch 13 → second gear clutch gear 14 → first gear shaft 18 → first gear output gear 17 → fourth gear gear 22 → output gear 24 → output shaft 23;

[0054] Reverse third gear: Control valve V controls the engagement of reverse clutch 2 and third gear clutch 4, and power is transmitted through the following route: input shaft 7 → input gear 8 → reverse clutch gear 1 → reverse clutch 2 → reverse gear 3 → third gear clutch 4 → third gear clutch gear 5 → second gear clutch gear 14 → first gear shaft 18 → first gear output gear 17 → fourth gear gear 22 → output gear 24 → output shaft 23;

[0055] Reverse fourth gear: Control valve V controls the engagement of reverse clutch 2 and fourth gear clutch 21. Power is transmitted through the following route: input shaft 7 → input gear 8 → reverse clutch gear 1 → reverse clutch 2 → reverse gear 3 → reverse third gear clutch shaft 6 → first gear transmission pinion 26 → first gear clutch gear 15 → fourth gear clutch gear 20 → fourth gear clutch 21 → fourth gear shaft 19 → fourth gear 22 → output gear 24 → output shaft 23.

[0056] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0057] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A power shift transmission for underground mining machinery, characterized in that, It includes an input component (Ⅲ), a front two-axis component (Ⅳ), a reverse three-axis component (Ⅱ), a first-speed axis component (Ⅵ), a fourth-speed axis component (Ⅶ), and an output component (Ⅷ). The input component (Ⅲ) includes an input shaft (7) and an input gear (8) connected to the input shaft (7). The front two-shaft component (Ⅳ) includes a front two-clutch shaft (9), and a forward gear clutch gear (10), a forward gear gear (12), a forward gear clutch (11), and a second gear clutch (13) connected to the front two-clutch shaft (9). The reverse three-shaft component (II) includes a reverse three-clutch shaft (6), and a reverse clutch gear (1), a third-gear clutch gear (5), a first-gear transmission pinion (26), a reverse gear (3), a reverse clutch (2), and a third-gear clutch (4) connected to the reverse three-clutch shaft (6). The first gear shaft component (VI) includes a first gear shaft (18), and a first gear clutch gear (15), a second gear clutch gear (14), a first gear output gear (17), and a first gear clutch (16) connected to the first gear shaft (18). The four-speed shaft component (VII) includes a four-speed shaft (19), and a four-speed clutch gear (20), a four-speed gear (22), and a four-speed clutch (21) connected to the four-speed shaft (19). The output component (VIII) includes an output shaft (23) and an output gear (24) connected to the output shaft (23); The input gear (8) meshes with the forward gear clutch gear (10) and the reverse gear clutch gear (1) respectively; the forward gear gear (12) meshes with the reverse gear gear (3); the second gear clutch gear (14) meshes with the third gear clutch gear (5); the first gear clutch gear (15) meshes with the first gear transmission pinion (26) and the fourth gear clutch gear (20) respectively; and the fourth gear gear (22) meshes with the first gear output gear (17) and the output gear (24) respectively. The gear shifting mechanism of the power shift transmission includes the following: the forward gear clutch (11) and the first gear clutch (16) engage to form forward first gear; the forward gear clutch (11) and the second gear clutch (13) engage to form forward second gear; the forward gear clutch (11) and the third gear clutch (4) engage to form forward third gear; the forward gear clutch (11) and the fourth gear clutch (21) engage to form forward fourth gear; the reverse gear clutch (2) and the first gear clutch (16) engage to form reverse first gear; the reverse gear clutch (2) and the second gear clutch (13) engage to form reverse second gear; the reverse gear clutch (2) and the third gear clutch (4) engage to form reverse third gear; and the reverse gear clutch (2) and the fourth gear clutch (21) engage to form reverse fourth gear.

2. The power shift transmission for underground mining machinery according to claim 1, characterized in that, The power shift transmission also includes a housing component (Ⅰ), which includes a housing (25). The input component (Ⅲ), the front second shaft component (Ⅳ), the reverse third shaft component (Ⅱ), the first gear shaft component (Ⅵ), the fourth gear shaft component (Ⅶ), and the output component (Ⅷ) are all mounted on the housing (25).

3. The power shift transmission for underground mining machinery according to claim 2, characterized in that, The input shaft (7), the first two clutch shaft (9), the third reverse clutch shaft (6), the first gear shaft (18), the fourth gear shaft (19), and the output shaft (23) are respectively supported on the housing (25) by bearings.

4. The power shift transmission for underground mining machinery according to claim 1, characterized in that, The forward gear clutch gear (10), reverse gear clutch gear (1), third gear clutch gear (5), first gear clutch gear (15), and fourth gear clutch gear (20) are respectively connected to the corresponding shafts via bearings; the input gear (8), first gear transmission pinion (26), second gear clutch gear (14), first gear output gear (17), fourth gear gear (22), and output gear (24) are respectively connected to the corresponding shafts via splines; the forward gear gear (12) and reverse gear gear (3) are respectively connected to the corresponding shafts via interference fits.

5. The power shift transmission for underground mining machinery according to claim 1, characterized in that, The power shift transmission also includes a control valve (V) for controlling the on / off state of each clutch.

6. The power shift transmission for underground mining machinery according to claim 1, characterized in that, The forward gear clutch (11), second gear clutch (13), reverse gear clutch (2), third gear clutch (4), first gear clutch (16), and fourth gear clutch (21) are all wet multi-plate friction clutches.

7. The power shift transmission for underground mining machinery according to claim 1, characterized in that, The forward clutch (11), second gear clutch (13), reverse clutch (2), third gear clutch (4), first gear clutch (16), and fourth gear clutch (21) are all connected to the corresponding shafts via splines.

8. The power shift transmission for underground mining machinery according to claim 1, characterized in that, The power shift transmission includes four forward gears and four reverse gears.

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