A power system for engineering vehicles

Abstract

This invention discloses a power system for engineering vehicles. A power input module is connected to an input shaft. The input shaft, through a planetary carrier unit or a connecting bracket unit, engages with a first or second gear set to transmit power to a drive shaft. The drive shaft then transmits power to an output shaft via a third and fourth gear set. A first, second, third, and fourth clutch are mounted on the drive shaft. The first and second clutches are connected via a shared bracket, as are the third and fourth clutches. One end of the drive shaft is connected to a fifth clutch, which is connected to a sixth clutch via a shared bracket. The sixth clutch is connected to one end of the output shaft. This invention enables automatic gear shifting without power interruption, providing the vehicle with more abundant power and more convenient driving operation, thus improving vehicle operating efficiency.

Description

Technical Field

[0001] This invention belongs to the field of transmission technology, and in particular to a power system for engineering vehicles. Background Technology

[0002] The construction machinery industry is one of the fastest-growing sectors in the equipment manufacturing industry over the past decade, primarily serving the construction, maintenance, and mechanized operations of various construction projects. From its inception, the construction machinery industry has been positioned as vital to national defense and economic development. However, with socio-economic development and technological advancements, the contradiction between energy, resource, and environmental constraints and economic growth has become increasingly prominent. Therefore, the construction machinery industry urgently needs to transform and develop, taking new steps in energy and resource conservation and reducing environmental pollution.

[0003] Existing construction vehicles use traditional energy sources, resulting in high fuel consumption and significant pollution emissions. This contradicts the current concept of sustainable development and is detrimental to the long-term development of the construction machinery industry. Secondly, existing construction vehicles cannot shift gears during heavy-duty operations, or power interruptions occur during gear shifting, causing the vehicle to slow down or stop, which is detrimental to operational efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and provide a power system for engineering vehicles that solves the problems of high fuel consumption and large pollution emissions of current engineering vehicles. At the same time, it can realize automatic gear shifting without interruption of power and improve work efficiency.

[0005] To achieve the above objectives, the present invention employs the following technical solution:

[0006] A power system for an engineering vehicle includes a power input module, an input shaft, a drive shaft, and an output shaft;

[0007] The power input module is connected to the input shaft. The input shaft, through a planetary carrier unit or a connecting bracket unit, cooperates with the first gear set or the second gear set to transmit power to the drive shaft. The drive shaft, through the third gear set and the fourth gear set, transmits power to the output shaft.

[0008] The drive shaft is equipped with a first clutch, a second clutch, a third clutch, and a fourth clutch. The first clutch and the second clutch are connected by a common bracket, and the third clutch and the fourth clutch are connected by a common bracket. One end of the drive shaft is connected to a fifth clutch, and the fifth clutch and the sixth clutch are connected by a common bracket. The sixth clutch is connected to one end of the output shaft.

[0009] Furthermore, the power input module includes an engine and an electric motor, and the input shaft includes a first input shaft and a hollow shaft;

[0010] One end of the first input shaft is connected to the output end of the engine via a spline, and one end of the hollow shaft is connected to the output end of the electric motor via a spline.

[0011] Furthermore, the planetary carrier unit includes a planetary carrier and a second connecting bracket. One side of the planetary carrier is connected to one side of the second connecting bracket via a spline, and the other side of the planetary carrier is connected to the other end of the first input shaft via a spline. The portion of the first input shaft extending into the inner side of the planetary carrier is connected to the drive shaft via a sleeve. The other side of the second connecting bracket is connected to one end of the third clutch via a spline.

[0012] Furthermore, the connecting bracket unit includes a first connecting bracket, a gear ring, and a third connecting bracket. One side of the first connecting bracket is connected to one side of the gear ring, and the other side of the gear ring is connected to one side of the third connecting bracket. The other side of the first connecting bracket is connected to the other end of the hollow shaft via a spline, and the other side of the third connecting bracket is connected to one end of the fourth clutch via a spline.

[0013] Furthermore, the first gear set includes a first gear and a second gear that mesh with each other. The first gear is loosely fitted on the drive shaft. The first gear is connected to one end of the first clutch via a spline. The second gear meshes with the inner side of the gear ring. The second gear is loosely fitted on the planetary carrier via a bushing.

[0014] Furthermore, the second gear set includes a meshing third gear and a fourth gear. The fourth gear is loosely fitted on the drive shaft and is connected to one end of the second clutch via a spline. The third gear is loosely fitted on the planetary carrier via a bushing.

[0015] Furthermore, the bushing is fitted onto the planetary carrier, one end of the bushing is connected to the second gear via a spline, and the other end of the bushing is connected to the third gear via a spline.

[0016] Furthermore, the third gear set includes a fifth gear and a sixth gear that mesh with each other. The fifth gear is loosely fitted on the drive shaft, and one side of the fifth gear is connected to one end of the fifth clutch via a spline.

[0017] Furthermore, the fourth gear set includes a meshing seventh gear and an eighth gear, with the eighth gear being splinedly connected to the output shaft.

[0018] Furthermore, the sixth gear in the third gear set and the seventh gear in the fourth gear set are both mounted on intermediate shafts via splines, and both intermediate shafts are parallel to the drive shaft and the output shaft.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a power system for engineering vehicles, employing a power source combining an engine and an electric motor. This reduces the consumption of traditional energy sources and decreases pollutant emissions. Simultaneously, the power input module transmits power to the drive shaft via an input shaft. Multiple wet clutches are mounted on the drive shaft, and the power is transmitted to the output shaft using a wet clutch shifting structure. The entire system enables automatic shifting without power interruption, providing the vehicle with more abundant power and easier driving operation, thus improving operational efficiency.

[0021] Furthermore, the adoption of a planetary layout and a double intermediate shaft layout improves the load-bearing capacity of the transmission system, making it easier for the transmission system to adapt to high-power output conditions during heavy-duty operations. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the transmission route of the present invention.

[0024] Wherein: T01-engine, T02-electric motor, Z01-first input shaft, Z02-hollow shaft, Z03-drive shaft, Z04-intermediate shaft, Z05-output shaft, 01-first gear, 02-second gear, 03-third gear, 04-fourth gear, 05-fifth gear, 06-sixth gear, 07-seventh gear, 08-eighth gear, 09-first connecting bracket, 10-planetary carrier, 11-gear ring, 12-shaft sleeve, 13-second connecting bracket, 14-third connecting bracket, A-first clutch, B-second clutch, C-third clutch, D-fourth clutch, E-fifth clutch, F-sixth clutch. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings:

[0032] See Figure 1This invention provides a power system for an engineering vehicle, including an engine T01, an electric motor T02, a first input shaft Z01, a hollow shaft Z02, a transmission shaft Z03, an intermediate shaft Z04, an output shaft Z05, a first gear 01, a second gear 02, a third gear 03, a fourth gear 04, a fifth gear 05, a sixth gear 06, a seventh gear 07, an eighth gear 08, a first connecting bracket 09, a planetary carrier 10, a gear ring 11, a bushing 12, a second connecting bracket 13, a third connecting bracket 14, a first clutch A, a second clutch B, a third clutch C, a fourth clutch D, a fifth clutch E, and a sixth clutch F.

[0033] The power input module uses a combination of engine T01 and electric motor T02 as its power source. The power input module connects to the input shaft to transmit power to the planetary carrier 10 and the first connecting bracket 09. The left end of the first input shaft Z01 is splined to the output end of engine T01, and the right end of the first input shaft Z01 is splined to planetary carrier 10. The left end of the hollow shaft Z02 is splined to the output end of electric motor T02, and the right end of the hollow shaft Z02 is splined to the first connecting bracket 09.

[0034] The left end of the drive shaft Z03 is connected to the part of the first input shaft Z01 that extends into the planetary carrier 10, and can slide relative to it. The right end of the drive shaft Z03 is connected to the common bracket of the fifth clutch E and the sixth clutch F. The first clutch A, the second clutch B, the third clutch C and the fourth clutch D are installed on the drive shaft Z03. The first clutch A and the second clutch B are connected by a common bracket, and the third clutch C and the fourth clutch D are connected by a common bracket. The left end of the output shaft Z05 is splined to one end of the sixth clutch F, and the other end is connected to the vehicle running gear.

[0035] The outer side of the first connecting bracket 09 is splinedly connected to the gear ring 11, the inner side of the gear ring 11 meshes with the second gear 02, the right end of the gear ring 11 is splinedly connected to the third connecting bracket 14, and the inner side of the third connecting bracket 14 is splinedly connected to one end of the fourth clutch D. The inner side of the second connecting bracket 13 is splinedly connected to one end of the third clutch C, and the outer side is splinedly connected to the planetary carrier 10. The bushing 12 is fitted onto the planetary carrier 10, with its left end splinedly connected to the second gear 02 and its right end splinedly connected to the third gear 03. The inner side of the first gear 01 is splinedly connected to one end of the first clutch A, and simultaneously loosely fitted onto the drive shaft Z03. The outer side of the first gear 01 meshes with the second gear 02. The outer side of the third gear 03 meshes with the outer side of the fourth gear 04, and the inner side of the fourth gear 04 is splinedly connected to one end of the second clutch B, and simultaneously loosely fitted onto the drive shaft Z03.

[0036] The inner side of the fifth gear 05 is splinedly connected to one end of the fifth clutch E, and is loosely fitted on the drive shaft Z03. The outer side of the fifth gear 05 meshes with the sixth gear 06. The sixth gear 06 is splinedly connected to the intermediate shaft Z04, and the seventh gear 07 is splinedly connected to the intermediate shaft Z04. There are two intermediate shafts Z04, which is a double intermediate shaft. Both intermediate shafts Z04 are parallel to the drive shaft Z03 and the output shaft Z05. The seventh gear 07 meshes with the eighth gear 08, and the eighth gear 08 is splinedly connected to the output shaft Z05.

[0037] The power transmission route of the engineering vehicle power system provided by this invention is as follows:

[0038] Table 1 Power transmission routes of engineering vehicle power systems

[0039]

[0040] As shown in Table 1, the input shaft, through a planetary carrier unit or connecting bracket unit, engages with the first or second gear set to transmit the power generated by the engine T01 and motor T02 of the power input module to the drive shaft Z03. The drive shaft Z03 then transmits the power to the output shaft Z05 for output through the third and fourth gear sets. The entire system can achieve automatic gear shifting without power interruption during the automatic shifting process. The automatic shifting process of this invention can achieve eight forward gears according to the power transmission route. Gears 1 / 2 / 4 / 5 / 6 / 8 can also achieve reverse gear under the adjustment of the motor. Overall, the transmission can achieve a shifting effect of 8 forward gears and 6 reverse gears, providing the vehicle with more abundant power and more convenient driving operation, which is beneficial to improving the vehicle's operating efficiency.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power system for engineering vehicles, characterized in that, It includes a power input module, an input shaft, a drive shaft (Z03), and an output shaft (Z05). The power input module is connected to the input shaft. The input shaft, through a planetary carrier unit or a connecting bracket unit, cooperates with the first gear set or the second gear set to transmit power to the drive shaft (Z03). The drive shaft (Z03) transmits power to the output shaft (Z05) through the third gear set and the fourth gear set. The drive shaft (Z03) is equipped with a first clutch (A), a second clutch (B), a third clutch (C), and a fourth clutch (D). The first clutch (A) and the second clutch (B) are connected by a common bracket. The third clutch (C) and the fourth clutch (D) are connected by a common bracket. One end of the drive shaft (Z03) is connected to a fifth clutch (E). The fifth clutch (E) and the sixth clutch (F) are connected by a common bracket. The sixth clutch (F) is connected to one end of the output shaft (Z05). The power input module includes an engine (T01) and an electric motor (T02), and the input shaft includes a first input shaft (Z01) and a hollow shaft (Z02). The planetary carrier unit includes a planetary carrier (10) and a second connecting bracket (13). One side of the planetary carrier (10) is connected to one side of the second connecting bracket (13) via a spline. The other side of the planetary carrier (10) is connected to the other end of the first input shaft (Z01) via a spline. The portion of the first input shaft (Z01) extending into the inner side of the planetary carrier (10) is loosely connected to the drive shaft (Z03). The other side of the second connecting bracket (13) is connected to one end of the third clutch (C) via a spline. The connecting bracket unit includes a first connecting bracket (09), a gear ring (11), and a third connecting bracket (14). One side of the first connecting bracket (09) is connected to one side of the gear ring (11), and the other side of the gear ring (11) is connected to one side of the third connecting bracket (14). The other side of the first connecting bracket (09) is connected to the other end of the hollow shaft (Z02) via a spline, and the other side of the third connecting bracket (14) is connected to one end of the fourth clutch (D) via a spline. The first gear set includes a first gear (01) and a second gear (02) that mesh with each other. The first gear (01) is loosely fitted on the transmission shaft (Z03). The first gear (01) is connected to one end of the first clutch (A) through a spline. The second gear (02) meshes with the inner side of the gear ring (11). The second gear (02) is loosely fitted on the planet carrier (10) through the bushing (12). The second gear set includes a meshing third gear (03) and a fourth gear (04). The fourth gear (04) is loosely fitted on the drive shaft (Z03). The fourth gear (04) is connected to one end of the second clutch (B) via a spline. The third gear (03) is loosely fitted on the planet carrier (10) via a bushing (12).

2. The power system for engineering vehicles according to claim 1, characterized in that, One end of the first input shaft (Z01) is connected to the output end of the engine (T01) via a spline, and one end of the hollow shaft (Z02) is connected to the output end of the electric motor (T02) via a spline.

3. The power system for engineering vehicles according to claim 1, characterized in that, The bushing (12) is fitted onto the planetary carrier (10). One end of the bushing (12) is connected to the second gear (02) via a spline, and the other end of the bushing (12) is connected to the third gear (03) via a spline.

4. The power system for engineering vehicles according to claim 1, characterized in that, The third gear set includes a fifth gear (05) and a sixth gear (06) that mesh with each other. The fifth gear (05) is loosely fitted on the drive shaft (Z03). One side of the fifth gear (05) is connected to one end of the fifth clutch (E) via a spline.

5. The power system for an engineering vehicle according to claim 1, characterized in that, The fourth gear set includes a meshing seventh gear (07) and an eighth gear (08), the eighth gear (08) being splinedly connected to the output shaft (Z05).

6. The power system for an engineering vehicle according to claim 1, characterized in that, The sixth gear (06) in the third gear set and the seventh gear (07) in the fourth gear set are both mounted on the intermediate shaft (Z04) via splines. Both intermediate shafts (Z04) are parallel to the transmission shaft (Z03) and the output shaft (Z05).

Images