Transfer case for high-pressure pump truck

Abstract

The utility model discloses a transfer case for a high-pressure pump truck. The transfer case comprises a case body; the input shaft is rotationally connected to the box body; the first gear and the second gear are rotationally connected to the input shaft; the gear shifting gear sleeve is connected to the input shaft, rotates along with the input shaft and can be meshed with the first gear and the second gear through axial displacement. The third gear and the fourth gear are rotationally connected to the box body and are respectively meshed with the first gear; the fifth gear is rotationally connected to the box body and is meshed with the second gear; the sixth gear and the seventh gear are rotationally connected to the box body and engaged with the fifth gear; the first output shaft is fixedly connected with an eighth gear, and the eighth gear is meshed with the third gear and the sixth gear; the second output shaft is fixedly connected with a ninth gear, and the ninth gear is meshed with the fourth gear and the seventh gear; through simple structural design and an efficient transmission mechanism, flexible distribution and reversing of power are achieved, and the operation efficiency and safety of the high-pressure pump truck are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transfer cases, and specifically relates to a transfer case for a high-pressure pump vehicle. Background Art

[0002] In the field of high-pressure pump vehicles, the efficient and flexible distribution and commutation of the power system are key factors for improving operation efficiency and safety. The traditional power system of high-pressure pump vehicles usually adopts a single power output mode, which is difficult to meet the complex and changeable operation requirements, especially in the occasions where it is necessary to frequently switch the rotation direction of the water pump or drive multiple water pumps simultaneously. This limitation not only reduces the operation efficiency, but also increases the labor intensity and safety risks of the operators.

[0003] In order to overcome the above defects, in the prior art, the distribution and commutation of power are often achieved through complex transmission mechanisms and control systems. However, these solutions often have problems such as complex structures, difficult maintenance, high costs, and it is difficult to achieve the expected stability and reliability in practical applications. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a transfer case for a high-pressure pump vehicle aiming at the problems existing in the prior art. Through simple structural design and efficient transmission mechanism, the flexible distribution and commutation of power are realized, and the operation efficiency and safety of the high-pressure pump vehicle are improved.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A transfer case for a high-pressure pump vehicle, comprising: a box body; an input shaft rotatably connected to the box body; a first gear and a second gear rotatably connected to the input shaft; a shift sleeve connected to the input shaft and rotating therewith, and capable of meshing with the first gear and the second gear respectively through axial displacement; a third gear and a fourth gear rotatably connected to the box body and meshing with the first gear respectively; a fifth gear rotatably connected to the box body and meshing with the second gear; a sixth gear and a seventh gear rotatably connected to the box body and meshing with the fifth gear respectively; a first output shaft fixedly connected with an eighth gear, and the eighth gear meshing with the third gear and the sixth gear respectively; a second output shaft fixedly connected with a ninth gear, and the ninth gear meshing with the fourth gear and the seventh gear respectively.

[0007] The input shaft is provided with a spline, the shift sleeve is connected to the input shaft through the spline, the shift sleeve is connected with a shift fork, and the shift fork is connected with a linear driving device.

[0008] The first gear is provided with a first end face pinion gear, and the shift sleeve can be axially displaced to engage with the first end face pinion gear to achieve a transmission connection with the first gear; the second gear is provided with a second end face pinion gear, and the shift sleeve can be axially displaced to engage with the second end face pinion gear to achieve a transmission connection with the second gear.

[0009] The third gear is provided with a third end face pinion gear, and the sixth gear is provided with a sixth end face pinion gear; the eighth gear meshes with the third end face pinion gear to achieve a transmission connection with the third gear; the eighth gear meshes with the sixth end face pinion gear to achieve a transmission connection with the sixth gear.

[0010] The fourth gear is provided with a fourth end face pinion gear, and the seventh gear is provided with a seventh end face pinion gear; the ninth gear meshes with the fourth end face pinion gear to achieve a transmission connection with the fourth gear; the ninth gear meshes with the seventh end face pinion gear to achieve a transmission connection with the seventh gear.

[0011] The transfer case includes a third transmission shaft, a fourth transmission shaft, a fifth transmission shaft, a sixth transmission shaft, and a seventh transmission shaft that are respectively rotatably connected to the housing, and the third gear, the fourth gear, the fifth gear, the sixth gear, and the seventh gear are respectively fixedly connected to the corresponding transmission shafts.

[0012] A lubricating pump is connected to the outside of the housing. One end of the input shaft is connected to the main shaft of the lubricating pump. The lubricating pump is connected to a lubricating oil nozzle through a pipeline, and one end of the lubricating oil nozzle is arranged inside the housing.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] Through the axial displacement of the shift sleeve, it can flexibly achieve meshing with the first gear or the second gear, thereby efficiently distributing power to the two output shafts; when the shift sleeve meshes with the second gear, power reversal is achieved, enabling the output shaft to rotate in the opposite direction to the input shaft, meeting the requirement of the high-pressure pump truck for forward and reverse rotation switching in actual applications;

[0015] A lubricating pump is arranged at one end of the input shaft and is connected to the lubricating oil nozzle through a pipeline, achieving comprehensive and effective lubrication of each component inside the housing, improving the transmission efficiency and service life of the transfer case;

[0016] The transfer case is particularly suitable for application scenarios such as high-pressure pump trucks that need to simultaneously drive multiple water pumps and require the water pumps to be able to switch between forward and reverse rotations. For example, when it is necessary to change the jet direction of the water flow during operation, only by controlling the telescopic movement of the linear drive device can the meshing and switching of the shift sleeve with different gears be achieved, improving the operation efficiency and flexibility. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is the front view of the transfer case in the embodiment of the present application;

[0019] Figure 2 It is the schematic diagram of the principle of gear transmission in the embodiment of the present application;

[0020] Figure 3 It is the schematic diagram of the input shaft reversing structure in the embodiment of the present application;

[0021] In the figure: 100, the housing; 1, the input shaft; 2, the first gear; 3, the second gear; 4, the shift sleeve; 5, the third gear; 6, the fourth gear; 7, the fifth gear; 8, the sixth gear; 9, the seventh gear; 10, the first output shaft; 11, the eighth gear; 12, the second output shaft; 13, the ninth gear; 14, the fork; 15, the lubricating pump. Detailed Description of the Embodiments

[0022] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present invention is normally placed. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0026] As Figures 1 to 3 As shown, the present application provides a power take-off for a high-pressure pump vehicle, including a housing 100, an input shaft 1, a first gear 2, a second gear 3, a shift sleeve 4, a third gear 5, a fourth gear 6, a fifth gear 7, a sixth gear 8, a seventh gear 9, a first output shaft 10, a second output shaft 12, and related transmission and connection components. The housing 100 serves as the basic framework of the entire power take-off, ensuring the stable and accurate operation of the internal transmission components.

[0027] The input shaft 1 is a component for power input. It is rotationally connected to the housing 100 and transmits the rotational motion of an external power source (such as an engine) to the inside of the power take-off. The input shaft 1 is provided with splines, and the shift sleeve 4 is tightly connected to the input shaft 1 through the splines and rotates with the input shaft 1. At the same time, the shift sleeve 4 is also connected to a shift fork 14, and the shift fork 14 is further connected to a linear drive device (such as a cylinder or an electric push rod). Through the telescopic action of the linear drive device, the axial displacement of the shift sleeve 4 on the input shaft 1 is realized, so as to engage with different gears and complete the shifting operation.

[0028] Both the first gear 2 and the second gear 3 are rotationally connected to the input shaft 1, but they do not always rotate synchronously with the input shaft 1. When the shift sleeve 4 is in the middle position, the first gear 2 and the second gear 3 are idling relative to the input shaft 1, that is, they do not transmit power. When the shift sleeve 4 engages with the first gear 2 or the second gear 3 through axial displacement, the corresponding gear will rotate synchronously with the input shaft 1, and then drive the subsequent gear transmission chain.

[0029] In order to achieve more precise shifting operations, the first gear 2 and the second gear 3 are respectively provided with a first end face pinion and a second end face pinion. The shift sleeve 4 engages with these end face pinions through axial displacement to achieve power transmission with the first gear 2 and the second gear 3.

[0030] The third gear 5 and the fourth gear 6 are rotatably connected to the housing 100 and are respectively meshed with the first gear 2. When the shift sleeve 4 is meshed with the first gear 2, the rotational movement of the first gear 2 is transmitted to the subsequent output shaft through the third gear 5 and the fourth gear 6. The fifth gear 7 is also rotatably connected to the housing 100 but is meshed with the second gear 3. This design realizes the reversal of the rotational direction of the second gear 3, so that when the shift sleeve 4 is meshed with the second gear 3, the fifth gear 7 can drive the subsequent gears in the opposite rotational direction.

[0031] The sixth gear 8 and the seventh gear 9 are also rotatably connected to the housing 100 and are respectively meshed with the fifth gear 7. They serve as intermediate links for power transmission and further transmit the rotational movement of the fifth gear 7 to the output shaft. To improve the stability and efficiency of the transmission, the third gear 5, the sixth gear 8, and the fourth gear 6, the seventh gear 9 are respectively provided with a third end face pinion and a sixth end face pinion, a fourth end face pinion and a seventh end face pinion. These end face pinions are meshed with the eighth gear 11 and the ninth gear 13 on the subsequent output shaft, ensuring the efficient and accurate transmission of power.

[0032] The first output shaft 10 and the second output shaft 12 are the power output ends of the transfer case. They are respectively fixedly connected with an eighth gear 11 and a ninth gear 13. The eighth gear 11 is meshed with the third end face pinion of the third gear 5 and the sixth end face pinion of the sixth gear 8, and the ninth gear 13 is meshed with the fourth end face pinion of the fourth gear 6 and the seventh end face pinion of the seventh gear 9. So that no matter whether the shift sleeve 4 is meshed with the first gear 2 or the second gear 3, the first output shaft 10 and the second output shaft 12 can obtain stable and continuous power input and realize synchronous rotation.

[0033] The flanges of the first output shaft 10 and the second output shaft 12 adopt the standard flanges of heavy-duty trucks. This design not only enhances the bearing capacity and durability of the output shafts, but also facilitates their connection with external devices such as water pumps. In practical applications, only need to dock the input end of the water pump with the flange of the output shaft and fix it with fasteners, the operation is simple and reliable.

[0034] To further improve the transmission efficiency and stability of the transfer case, this embodiment also designs multiple drive shafts to support and fix the gears. Specifically, the third drive shaft, the fourth drive shaft, the fifth drive shaft, the sixth drive shaft and the seventh drive shaft are respectively rotatably connected to the housing 100 and are respectively fixedly connected to the third gear 5, the fourth gear 6, the fifth gear 7, the sixth gear 8 and the seventh gear 9. So that each gear can rotate independently and stably.

[0035] Due to the relatively large vertical distance of the housing 100, it is difficult for the traditional splash lubrication method to ensure sufficient lubrication of all components inside the housing. Therefore, a lubrication pump 15 is provided at one end of the input shaft, and the lubrication pump 15 is connected to the lubricating oil nozzle through a pipeline. One end of the lubricating oil nozzle is arranged inside the housing 100. When the lubrication pump 15 works, it will spray the lubricating oil evenly onto each component inside the housing 100 in a spraying manner, thereby achieving comprehensive and effective lubrication inside the housing. This improves the transmission efficiency and service life of the transfer case.

[0036] Working principle:

[0037] The transfer case of the high-pressure pump vehicle realizes the engagement with the first gear 2 or the second gear 3 through the axial displacement of the shift sleeve 4, thereby achieving power distribution and commutation. When the shift sleeve 4 engages with the first gear 2, the first gear 2 rotates synchronously with the input shaft 1 and drives the third gear 5 and the fourth gear 6 to rotate. The third gear 5 and the fourth gear 6 then engage with the eighth gear 11 and the ninth gear 13 through the pinion gears on the end faces, and finally drive the first output shaft 10 and the second output shaft 12 to rotate synchronously. At this time, the second gear 3 is in an idling state and does not interfere with the rotation of the output shaft.

[0038] When the shift sleeve 4 engages with the second gear 3, the second gear 3 rotates synchronously with the input shaft 1 and drives the fifth gear 7 to rotate. The rotation direction of the fifth gear 7 is opposite to that of the input shaft 1, realizing power commutation. The fifth gear 7 then drives the sixth gear 8 and the seventh gear 9 to rotate, and they also engage with the eighth gear 11 and the ninth gear 13 through the pinion gears on the end faces, and finally drive the first output shaft 10 and the second output shaft 12 to rotate synchronously in the opposite direction to the previous state. At this time, the first gear 2 is in an idling state and does not interfere with the rotation of the output shaft.

[0039] In summary, the transfer case can efficiently distribute the rotational motion of a power source to two output shafts and realize the forward and reverse rotation switching function of the output shafts. This makes the transfer case of the high-pressure pump vehicle particularly suitable for application scenarios such as high-pressure pump vehicles that need to drive multiple water pumps simultaneously and require the water pumps to be able to switch between forward and reverse rotations.

[0040] In practical applications, the transfer case of the high-pressure pump vehicle can be easily connected to the power system of the high-pressure pump vehicle, such as the engine and the water pump system. By adjusting the position of the shift sleeve 4, the forward and reverse rotation switching function of the two water pumps can be conveniently realized. For example, during the cleaning operation, when it is necessary to change the spraying direction of the water flow, only by controlling the telescopic movement of a linear driving device such as a cylinder or an electric push rod, the engagement switching of the shift sleeve 4 with different gears can be achieved, thereby changing the rotation direction of the water pump, improving the efficiency and flexibility of the cleaning operation, and reducing the labor intensity and safety risks of the operator.

[0041] At the same time, since the present invention adopts a large module wide tooth thickness gear design and a heavy-duty truck standard flange design, the transfer case can still maintain stable and reliable transmission performance when bearing high torque and impact loads.

[0042] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A power take-off box for a high-pressure pump vehicle, characterized in that, Comprising: A housing (100), serving as the basic framework of the transfer case; An input shaft (1), rotatably connected to the housing (100); A first gear (2) and a second gear (3), rotatably connected to the input shaft (1); A shift sleeve (4), connected to the input shaft (1) and rotating therewith, and capable of engaging with the first gear (2) and the second gear (3) respectively through axial displacement; A third gear (5) and a fourth gear (6), rotatably connected to the housing (100), and meshing with the first gear (2) respectively; A fifth gear (7), rotatably connected to the housing (100), and meshing with the second gear (3); A sixth gear (8) and a seventh gear (9), rotatably connected to the housing (100), and meshing with the fifth gear (7) respectively; A first output shaft (10), fixedly connected with an eighth gear (11), and the eighth gear (11) meshes with the third gear (5) and the sixth gear (8) respectively; A second output shaft (12), fixedly connected with a ninth gear (13), and the ninth gear (13) meshes with the fourth gear (6) and the seventh gear (9) respectively.

2. The transfer case for a high-pressure pump vehicle according to claim 1, characterized in that, The input shaft (1) is provided with a spline, the shift sleeve (4) is connected to the input shaft (1) through the spline, the shift sleeve (4) is connected with a shift fork (14), and the shift fork (14) is connected with a linear driving device.

3. The transfer case for a high-pressure pump vehicle according to claim 1, characterized in that, The first gear (2) is provided with a first end face pinion, and the shift sleeve (4) can engage with the first end face pinion through axial displacement to realize the transmission connection with the first gear (2); The second gear (3) is provided with a second end face pinion, and the shift sleeve (4) can engage with the second end face pinion through axial displacement to realize the transmission connection with the second gear (3).

4. A power take-off for a high-pressure pump vehicle according to claim 1, characterized in that, The third gear (5) is provided with a third end face pinion, and the sixth gear (8) is provided with a sixth end face pinion; the eighth gear (11) meshes with the third end face pinion to realize the transmission connection with the third gear (5); the eighth gear (11) meshes with the sixth end face pinion to realize the transmission connection with the sixth gear (8).

5. The power take-off box for a high-pressure pump vehicle according to claim 1, characterized in that, The fourth gear (6) is provided with a fourth end face pinion, and the seventh gear (9) is provided with a seventh end face pinion; the ninth gear (13) meshes with the fourth end face pinion to realize the transmission connection with the fourth gear (6); the ninth gear (13) meshes with the seventh end face pinion to realize the transmission connection with the seventh gear (9).

6. The transfer case for a high-pressure pump vehicle according to claim 1, characterized in that, Including a third transmission shaft, a fourth transmission shaft, a fifth transmission shaft, a sixth transmission shaft, and a seventh transmission shaft that are respectively rotatably connected to the housing (100), and the third gear (5), the fourth gear (6), the fifth gear (7), the sixth gear (8), and the seventh gear (9) are respectively fixedly connected to the corresponding transmission shafts.

7. A power take-off for a high-pressure pump vehicle according to claim 1, characterized in that, A lubricating pump (15) is connected to the outside of the box body (100). One end of the input shaft is connected to the main shaft of the lubricating pump (15). The lubricating pump (15) is connected to a lubricating oil spray head through a pipeline, and one end of the lubricating oil spray head is arranged inside the box body (100).

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