Transfer case air cylinder driving structure

Abstract

The utility model relates to the technical field of transfer cases, in particular to a transfer case air cylinder driving structure which comprises a shell, a first-shaft driving shaft is rotatably connected in the shell, one end of the first-shaft driving shaft extends out of the shell and is used for being connected with a power output shaft of a main gearbox, and the other end of the first-shaft driving shaft is used for being connected with a second-shaft driving shaft. A first-shaft driving shaft is arranged in the shell, a driving gear is arranged on the first-shaft driving shaft located in the shell, a second-shaft driving shaft and a second-shaft driven shaft are rotationally connected into the shell, the axial direction of the second-shaft driving shaft and the surface of the second-shaft driven shaft are parallel to the surface of the first-shaft driving shaft, and a driving structure is arranged in the shell; and the driving structure comprises a lower air chamber rod and an upper air chamber rod which are respectively matched with the lower air chamber and the upper air chamber in the shell. According to the utility model, the driving structure is arranged, the switching of vehicle driving and loading work is quicker and smoother under the action of the double cylinders, the possibility of jamming is low, and potential safety hazards caused by out-of-control or incapability of stopping of the vehicle due to transmission system faults or emergency situations are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transfer cases, in particular to a transfer case cylinder drive structure. Background Art

[0002] In the prior art, all-wheel drive vehicles have good traction and adhesion performance, and are therefore suitable for complex roads. In the prior art, in order to distribute the power output from the gearbox of an all-wheel drive vehicle to each drive axle, a transfer case must be set after the gearbox. However, in actual work, some mechanically driven rail engineering vehicles also need a power output port to output power to meet the power requirements of some mechanisms: for example, the output power is connected to the oil pump to drive the hydraulic motor, and the power output of the hydraulic motor drives the reversing box to enable the vehicle to travel at a low speed; or to provide power for auxiliary working devices on the engineering vehicle.

[0003] After searching, the patent application number is (202020259921.0), which discloses "a transfer case with a hydraulic spring brake", which solves the problem of synchronization failure in the transfer case, that is, when the input end stops inputting power, the input shaft and the output shaft cannot stop running immediately, but will continue to run, which brings safety hazards to the operation;

[0004] However, the above device has the following problems: the single cylinder is driven by a spring, and its sensitivity decreases after long-term use, and it is easy to get stuck, so that the transfer case is locked when it is hung on the upper size and will not jump to the rear output shaft, which brings safety hazards to operation. For this reason, we propose a transfer case cylinder drive structure to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a transfer case cylinder drive structure to solve the problem in the above-mentioned background technology that the sensitivity decreases and the transfer case is easily stuck after long-term use, so that the transfer case is locked when hung on the upper size and will not jump to the rear output shaft, which brings safety hazards to the operation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transfer case cylinder drive structure, comprising a housing, a driving shaft is rotatably connected in the housing, one end of the driving shaft extends out of the housing and is used to be connected to the power output shaft of the main gearbox, and a driving gear is provided on the driving shaft located in the housing;

[0007] A two-axis driving shaft and a two-axis driven shaft are rotatably connected in the shell, the axial direction of the two-axis driving shaft and the surface of the two-axis driven shaft are parallel to the surface of the one-axis driving shaft, a two-axis transmission gear is provided on the two-axis driving shaft located in the shell, the two-axis transmission gear is meshed with the driving gear, one end of the two-axis driven shaft extends out of the shell and is used to be connected to the working equipment, the other end of the two-axis driven shaft and one end of the two-axis driving shaft are both located in the shell, a three-axis driving shaft is rotatably connected in the shell, the surface of the three-axis driving shaft is provided with a three-axis transmission gear, and the three-axis transmission gear is meshed with the two-axis transmission gear,

[0008] A driving structure is provided in the shell; the driving structure comprises a lower air chamber rod and an upper air chamber rod respectively arranged with the lower and upper air chambers in the shell, one end of the lower air chamber extends out of the shell and is used to be connected with the cylinder, one end of the upper air chamber extends out of the shell and is used to be connected with the cylinder, the lower air chamber rod is movably connected in the lower air chamber, the upper air chamber rod is movably connected in the upper air chamber, the upper end of the upper air chamber rod is inserted in the lower air chamber rod, the lower air chamber rod and the upper air chamber rod are respectively provided with a first air hole and a second air hole, the axial center lines of the first air hole and the second air hole are both collinear and parallel to the axial center line of the one-axis driving shaft, and are pushed by a double cylinder, a shift fork is provided on the surface air chamber of the upper air chamber rod, a gear sleeve is provided on the surface of the one-axis driving shaft, the diameter of the shift fork is adapted to the gear sleeve, a driven gear is connected to the upper end of the gear sleeve, a bevel gear is fixedly connected to the lower side of the driving gear, and the bevel gear is meshed with the driven gear.

[0009] Preferably, one end of the driving shaft extending out of the housing is connected to a power input connection disk and is used for connection and installation with an operation.

[0010] Preferably, the shell is rotatably connected to a driven shaft, the axial center line of the driving shaft and the axial center line of the driven shaft are collinear, one end of the driven shaft extends out of the shell and is used to be connected to an operating device, the other end of the driven shaft and the other end of the driving shaft are both located in the shell, a shift fork and a driven gear are provided between the other end of the driven shaft and the other end of the driving shaft, and connection and separation are achieved through the shift fork and the driven gear.

[0011] Preferably, the shell is rotatably connected to the mounting connection disk, the axial center line of the mounting connection disk is colinear with the axial center line of the three-axis driving shaft, one end of the mounting connection disk extends out of the shell and is used to connect with the front drive wheel drive shaft, the other end of the mounting connection disk is located in the shell, and a three-axis transmission gear is provided between the other end of the mounting connection disk and the other end of the three-axis driving shaft.

[0012] Preferably, a front half shaft is connected to one end of the three-axis driving shaft extending out of the housing and is used for connection and installation for operation.

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

[0014] The utility model is provided with a driving structure, when the transfer case switch is pulled out, the transfer case is in a loading working state, at this time, when the vehicle is in gear, only the output shaft on the transfer case rotates to produce work, the transmission shaft behind the vehicle does not rotate and the vehicle does not move; when the transfer case switch is pressed, the vehicle enters a driving state, the transmission is in gear, the output shaft on the transfer case does not rotate, and the vehicle can only drive, through the action of the double cylinders, the vehicle driving and loading work switching is faster and smoother, not easy to get stuck, and the vehicle is prevented from losing control or being unable to stop due to a transmission system failure or an emergency, causing a safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structural section of the housing of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the driving structure of the utility model.

[0019] In the figure: 1, housing; 2, driving shaft of axis 1; 3, driving gear; 4, driving shaft of axis 2; 5, driven shaft of axis 2; 6, transmission gear of axis 2; 7, driving shaft of axis 3; 8, transmission gear of axis 3; 9, lower air chamber; 10, lower air chamber rod; 11, upper air chamber rod; 12, upper air chamber; 13, first air hole; 14, second air hole; 15, fork; 16, gear sleeve; 17, driven gear; 18, bevel gear; 19, power input connecting plate; 20, driven shaft of axis 1; 21, mounting connecting plate; 22, front half shaft. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model provides an embodiment: a transfer case cylinder drive structure, comprising a housing 1, a driving shaft 2 is rotatably connected in the housing 1, one end of the driving shaft 2 extends out of the housing 1 and is used to be connected to the power output shaft of the main gearbox, and a driving gear 3 is provided on the driving shaft 2 located in the housing 1;

[0022] A two-axis driving shaft 4 and a two-axis driven shaft 5 are rotatably connected in the housing 1. The axial direction of the two-axis driving shaft 4 and the surface of the two-axis driven shaft 5 are parallel to the surface of the one-axis driving shaft 2. A two-axis transmission gear 6 is provided on the two-axis driving shaft 4 located in the housing 1. The two-axis transmission gear 6 is meshed with the driving gear 3. One end of the two-axis driven shaft 5 extends out of the housing 1 and is used to be connected to the working equipment. The other end of the two-axis driven shaft 5 and one end of the two-axis driving shaft 4 are both located in the housing 1. A three-axis driving shaft 7 is rotatably connected in the housing 1. The surface of the three-axis driving shaft 7 is provided with a three-axis transmission gear 8, and the three-axis transmission gear 8 is meshed with the two-axis transmission gear 6.

[0023] A driving structure is provided in the housing 1; the driving structure includes a lower air chamber rod 10 and an upper air chamber rod 11 which are respectively arranged with the air chamber lower 9 and the air chamber upper 12 in the housing 1, one end of the air chamber lower 9 extends out of the housing 1 and is used to be connected to the cylinder, one end of the air chamber upper 12 extends out of the housing 1 and is used to be connected to the cylinder, the lower air chamber rod 10 is movably connected in the air chamber lower 9, the upper air chamber rod 11 is movably connected in the air chamber upper 12, the upper end of the upper air chamber rod 11 is inserted in the lower air chamber rod 10, and the lower air chamber rod 10 and the upper air chamber rod 11 are respectively A first air hole 13 and a second air hole 14 are provided, the axial center lines of the first air hole 13 and the second air hole 14 are both collinear and parallel to the axial center line of the first-axis driving shaft 2, and are pushed by a double cylinder, a shift fork 15 is provided on the air chamber upper 12 located on the surface of the upper air chamber rod 11, a gear sleeve 16 is provided on the surface of the first-axis driving shaft 2, the diameter of the shift fork 15 is adapted to the gear sleeve 16, a driven gear 17 is connected to the upper end of the gear sleeve 16, a bevel gear 18 is fixedly connected to the lower side of the driving gear 3, and the bevel gear 18 is meshed with the driven gear 17;

[0024] This device solves the problem of decreased sensitivity and easy jamming after long-term use through the driving structure, so that the transfer case is locked when hung on the upper size and will not jump to the rear output shaft, which brings safety hazards to operation. In addition, the speed ratio of this product can be adjusted to increase or decrease speed, and the conversion can be adjusted through internal gears.

[0025] Furthermore, one end of the driving shaft 2 extending out of the housing 1 is connected to a power input connection disk 19, and a connection hole is provided on the surface of the power input connection disk 19 for connection and installation with a working machine. Figure 1 As shown, the structure is used to facilitate connection and installation with the internal machinery through the power input connection disk 19, and is connected to the power output shaft of the main gearbox.

[0026] Furthermore, the housing 1 is rotatably connected to a driven shaft 20, the axial centerline of the driving shaft 2 and the axial centerline of the driven shaft 20 are both in the same line, one end of the driven shaft 20 extends out of the housing 1 and is used to connect with the working device, the other end of the driven shaft 20 and the other end of the driving shaft 2 are both located in the housing 1, a fork 15 and a driven gear 17 are provided between the other end of the driven shaft 20 and the other end of the driving shaft 2, and connection and separation are achieved through the fork 15 and the driven gear 17, and the specific setting structure adopts the existing technology. Figure 2 As shown, the structure is used to lock the transfer case when it is hung on the upper size through the cooperation of the lower air chamber rod 10 and the upper air chamber rod 11, so that it will not jump to the rear output shaft, making it not easy to get stuck.

[0027] Furthermore, the housing 1 is rotatably connected to the mounting connection disk 21, the axial center line of the mounting connection disk 21 is colinear with the axial center line of the three-axis driving shaft 7, one end of the mounting connection disk 21 extends out of the housing 1 and is used to connect with the front drive wheel transmission shaft, the other end of the mounting connection disk 21 is located in the housing 1, and a three-axis transmission gear 8 is provided between the other end of the mounting connection disk 21 and the other end of the three-axis driving shaft 7. The specific setting structure adopts the existing technology, such as Figure 2 As shown, the structure is used to extend out of the housing 1 through one end of the mounting connection plate 21 for connection with the front drive wheel transmission shaft, and is driven through the three-axis transmission gear 8 to enable it to operate.

[0028] Furthermore, one end of the three-axis driving shaft 7 extending out of the housing 1 is connected to the front half shaft 22 and is used for connection and installation with the working device. Figure 2 As shown, the structure is used to facilitate connection and installation with the internal machinery through the front half shaft 22, and the overall structure is simple to assemble.

[0029] Working principle: When used, Figure 2As shown, the first-axis driving shaft 2 is connected to the power output shaft of the main gearbox through the power input connection plate 19, and drives the second-axis driving shaft 4 and the third-axis driving shaft 7 to rotate synchronously respectively; the second-axis driven shaft 5 and the first-axis driven shaft 20 can be connected to the working equipment that needs to be powered respectively. When the transfer case switch is pulled out, the transfer case is in the upper working state. At this time, when the vehicle is in gear, only the first-axis driving shaft 2 of the transfer case rotates and works, and the first-axis driving shaft 2 behind the vehicle will not rotate and the vehicle will not move; when the transfer case switch is pressed, the double cylinder operates, and the inner cylinder is pushed through the lower air chamber 9 and the upper air chamber 12 The lower air chamber rod 10 and the upper air chamber rod 11 of the part make their first air hole 13 and the second air hole 14 in the same axis. When the vehicle enters the driving state, the single-axis driving shaft 2 on the transfer case of the gearbox will not rotate, and it can only drive. The dual cylinders make the vehicle driving and upper installation work switching faster and smoother, and by controlling the connection and disconnection of the internal driven gear 17, the synchronous rotation of the driving gear 3, the second-axis transmission gear 6 and the third-axis transmission gear 8 is controlled, thereby realizing the switching of the driving mode, the front-wheel drive mode and the four-wheel drive mode. The above is the entire working principle of the utility model.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A transfer case cylinder drive structure, characterized in that: The invention comprises a housing (1), wherein a driving shaft (2) is rotatably connected inside the housing (1), one end of the driving shaft (2) extends out of the housing (1) and is used to be connected to a power output shaft of a main gearbox, and a driving gear (3) is provided on the driving shaft (2) located in the housing (1); A two-axis driving shaft (4) and a two-axis driven shaft (5) are rotatably connected in the housing (1); the axial direction of the two-axis driving shaft (4) and the surface of the two-axis driven shaft (5) are parallel to the surface of the one-axis driving shaft (2); a two-axis transmission gear (6) is provided on the two-axis driving shaft (4) in the housing (1); the two-axis transmission gear (6) is meshed with the driving gear (3); one end of the two-axis driven shaft (5) extends out of the housing (1) and is used to be connected to an operating device; the other end of the two-axis driven shaft (5) and one end of the two-axis driving shaft (4) are both located in the housing (1); a three-axis driving shaft (7) is rotatably connected in the housing (1); a three-axis transmission gear (8) is provided on the surface of the three-axis driving shaft (7) and is meshed with the two-axis transmission gear (6) through the three-axis transmission gear (8); A driving structure is provided in the shell (1); the driving structure comprises a lower air chamber rod (10) and an upper air chamber rod (11) which are respectively arranged in cooperation with an air chamber lower portion (9) and an air chamber upper portion (12) in the shell (1); one end of the lower air chamber rod (9) extends out of the shell (1) and is used to be connected to a cylinder; one end of the upper air chamber rod (12) extends out of the shell (1) and is used to be connected to a cylinder; the lower air chamber rod (10) is movably connected in the lower air chamber rod (9); the upper air chamber rod (11) is movably connected in the upper air chamber rod (12); the upper end of the upper air chamber rod (11) is inserted in the lower air chamber rod (10); the lower air chamber rod (10) and the upper air chamber rod (11) are connected to each other. ) are respectively provided with a first air hole (13) and a second air hole (14), the axial center lines of the first air hole (13) and the second air hole (14) are both collinear and parallel to the axial center line of the one-axis driving shaft (2), and are pushed by a double cylinder, a shift fork (15) is provided on the surface air chamber (12) of the upper air chamber rod (11), a gear sleeve (16) is provided on the surface of the one-axis driving shaft (2), the diameter of the shift fork (15) is matched with the gear sleeve (16), the upper end of the gear sleeve (16) is connected to a driven gear (17), the lower side of the driving gear (3) is fixedly connected to a bevel gear (18), and the bevel gear (18) is meshed with the driven gear (17).

2. A transfer case cylinder drive structure according to claim 1, characterized in that: One end of the one-axis driving shaft (2) extending out of the housing (1) is connected to a power input connection disk (19) and is used for connection and installation with an operation device.

3. The transfer case cylinder drive structure according to claim 1, characterized in that: The housing (1) is rotatably connected to a driven shaft (20); the axial centerline of the driving shaft (2) and the axial centerline of the driven shaft (20) are both collinear; one end of the driven shaft (20) extends out of the housing (1) and is used to be connected to an operating device; the other end of the driven shaft (20) and the other end of the driving shaft (2) are both located in the housing (1); a shift fork (15) and a driven gear (17) are provided between the other end of the driven shaft (20) and the other end of the driving shaft (2); and connection and separation are achieved through the shift fork (15) and the driven gear (17).

4. A transfer case cylinder drive structure according to claim 1, characterized in that: The housing (1) is rotatably connected to a mounting connection disk (21), the axial center line of the mounting connection disk (21) being colinear with the axial center line of the three-axis driving shaft (7), one end of the mounting connection disk (21) extending out of the housing (1) and being used to be connected to the front drive wheel transmission shaft, the other end of the mounting connection disk (21) being located in the housing (1), and a three-axis transmission gear (8) being provided between the other end of the mounting connection disk (21) and the other end of the three-axis driving shaft (7).

5. The transfer case cylinder drive structure according to claim 1, characterized in that: A front half shaft (22) is connected to one end of the three-axis driving shaft (7) extending out of the housing (1) and is used for connection and installation with an operation device.

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