Front axle swinging mechanism of mountain land articulated tractor

Abstract

The utility model discloses a mountain articulated tractor front axle wobble mechanism, which comprises a machine body and a front axle assembly, the machine body is provided with a gearbox I shaft and a gearbox II shaft which are arranged in parallel up and down, and the gearbox I shaft is in transmission connection with the gearbox II shaft; the front axle assembly is rotatably installed on the lower side of the machine body with the axis of the shaft of the gearbox II as the rotation center, so that the machine body and the front axle assembly can rotate around the axis of the shaft of the gearbox II. Rotation centers of machine body leveling and front axle swinging are unified so as to better adapt to waist twisting and bowing structures in follow-up design, the front axle swinging mechanism is designed in an embedded mode, the structure is more compact, the flexibility of tractor machine body adjustment is improved, and the overall function design of a tractor is easier to achieve.

Description

Technical Field

[0001] The utility model relates to the technical field of tractors, in particular to a front axle swing mechanism of a mountain articulated tractor. Background Art

[0002] my country has a vast hilly and mountainous area, which is dominated by undulating terrain and irregular slopes. When a tractor is operating on a slope, the tractor's body and front / rear axles will tilt with the ground due to the slope's certain slope. When the tilt angle is large, it is easy to slip, roll over, and the driver fall off the tractor. Therefore, tractors operating on hilly slopes need to be equipped with a body leveling mechanism to ensure the safety of the tractor when operating on the slope.

[0003] Based on this, my country's patent CN117184261A discloses a tractor and its fuselage leveling structure, wherein the fuselage leveling structure includes: a front axle device, the front axle device is provided with a front axle input shaft, and the front axle input shaft is arranged along the front and rear direction of the tractor; a rear axle device, the rear axle device is provided with a rear axle input shaft, and the rear axle input shaft is also arranged along the front and rear direction of the tractor, wherein the front axle input shaft is coaxial with the rear axle input shaft; or, the extension line of the axis of the front axle input shaft and the axis of the rear axle input shaft are located in the same plane and intersect with each other; a fuselage, the fuselage is rotatably supported between the front axle device and the rear axle device, and the axis of the front axle input shaft serves as the rotation axis of the fuselage; a fuselage driving device, used to drive the fuselage to rotate relative to the front axle device and the rear axle device, and maintain the horizontal posture of the fuselage after the fuselage rotates to a horizontal posture. The invention can achieve fuselage leveling. However, the prior art does not involve a front axle swing structure, and the front axle device of a traditional tractor is mainly installed under the engine or gearbox. The front axle swing structure is mainly used to increase the adaptability of the tractor in a bumpy road environment, and does not have a leveling function. In addition, the lowered front axle device makes the entire tractor taller and the structure less compact.

[0004] In addition, my country's patent CN218839609U also discloses a leveling frame and a crawler tractor with a leveling frame, including a frame body, the frame body includes a horizontally arranged upper frame and a lower frame, the upper frame is rotatably mounted on the lower frame; a telescopic member is provided on both sides of the lower frame, and the upper and lower ends of the telescopic member are rotatably connected to the upper frame and the lower frame respectively; when the lower frame is tilted, the upper frame is rotated to a horizontal state and then positioned by controlling the telescopic length of the two telescopic members. Although this prior art realizes the leveling of the fuselage of the crawler tractor when operating on a slope, the overall structure of the upper frame and the lower frame connected by articulation is not applicable to the articulated tractor with the functions of bending and twisting the waist. Therefore, how to realize the leveling of the fuselage of the articulated tractor while ensuring a compact structure to adapt to and realize the overall functional design of "bending the waist + twisting the waist + fuselage leveling" is a technical problem that the industry urgently needs to solve. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a front axle swing mechanism for a mountain articulated tractor, so as to solve the problem that the existing mountain articulated tractors do not take into account the body leveling requirements when operating on slopes and are difficult to adapt to the overall functional design of the tractor.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: a front axle swing mechanism, including a fuselage and a front axle assembly, the fuselage has a gearbox I shaft and a gearbox II shaft arranged in parallel up and down, and the gearbox I shaft is transmission-connected with the gearbox II shaft; the front axle assembly is rotatably installed on the lower side of the fuselage with the axis of the gearbox II shaft as the rotation center, so that both the fuselage and the front axle assembly can rotate around the axis of the gearbox II shaft.

[0007] As an optimization, the fuselage is provided with a swing groove / hole running through the left and right sides thereof, the front axle assembly is placed in the swing groove / hole, and there is a spacing between the front axle assembly and the groove / hole wall of the swing groove / hole, and the gearbox II shaft is transmission connected to the front axle assembly.

[0008] As an optimization, a rear supporting hole is provided on the rear side wall of the swing groove / hole, and a rear swing sleeve is rotatably installed in the rear supporting hole. The rear swing sleeve is coaxially arranged with the gearbox II shaft and fixedly connected with the front axle assembly, so that the front axle assembly can rotate around the axis of the gearbox II shaft; a first front axle small bevel gear shaft is coaxially installed at one end of the gearbox II shaft, and a first front axle small bevel gear is provided at the end of the first front axle small bevel gear shaft, and correspondingly, a front axle large bevel gear is provided in the front axle assembly, and the first front axle small bevel gear shaft can be rotatably passed through the rear swing sleeve, so that the first front axle small bevel gear is meshed with the front axle large bevel gear.

[0009] As an optimization, a front supporting hole is provided on the front side wall of the swing slot / hole, and a front swing shaft is rotatably installed in the front supporting hole. The front swing shaft is coaxially arranged with the gearbox II shaft and fixedly connected with the front axle assembly.

[0010] As an optimization, wear-resistant bushings and / or wear-resistant pads are provided between the front swing shaft and the front support hole, and between the rear swing shaft sleeve and the rear support hole.

[0011] As an optimization, the fuselage includes a power unit and a clutch housing, as well as a transfer case and / or a gearbox, which are connected in sequence from front to back, and the gearbox I shaft is connected to the power unit.

[0012] As an optimization, the lower side of one end of the clutch housing close to the transfer case or transmission is recessed upward to form a groove that runs through the side end surface and the lower side of the clutch housing, so that the clutch housing is L-shaped as a whole, and the groove cooperates with the transfer case or transmission to form a rocking groove with a U-shaped groove structure.

[0013] As an optimization, a reinforcing rib plate is provided at the opening of the U-shaped groove, and the two ends of the reinforcing rib plate are respectively connected to the clutch housing and the transfer case or the gearbox, so that the U-shaped groove and the reinforcing rib plate enclose a swing hole.

[0014] Compared with the prior art, the utility model has the following advantages: the front axle assembly is rotatably installed on the lower side of the fuselage with the axis of the gearbox II shaft as the rotation center, so that the fuselage and the front axle assembly can both rotate around the axis of the gearbox II shaft, so that the rotation center of the fuselage leveling and the front axle swinging are unified, so as to better adapt to the twisting waist and bending waist structure designed later. The front axle swinging mechanism is embedded in the design, the structure is more compact, the flexibility of the tractor body adjustment is improved, and the overall functional design of the tractor is easier to realize. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a right view structural schematic diagram of the utility model;

[0017] Figure 3 It is a partial enlarged view of the utility model;

[0018] In the figure: 1 power unit, 2 clutch housing, 3 wear-resistant pad, 4 wear-resistant bushing, 5 front swing shaft, 6 reinforcing rib plate, 7 front axle assembly, 8 front axle large bevel gear, 9 front axle small bevel gear, 10 rear swing shaft sleeve, 11 transfer case, 12 gearbox II shaft, 13 gearbox I shaft, 14 gearbox, 15 leveling mechanism, 16 front axle small bevel gear shaft, 17 swing slot / hole. DETAILED DESCRIPTION

[0019] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which 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 of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only 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. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example: See Figure 1-Figure 3A front axle swing mechanism of a mountain articulated tractor comprises a fuselage and a front axle assembly 7, wherein the fuselage has a gearbox I shaft 13 and a gearbox II shaft 12 which are arranged in parallel up and down, and the gearbox I shaft 13 is drivingly connected with the gearbox II shaft 12; the front axle assembly 7 is rotatably installed on the lower side of the fuselage with the axis of the gearbox II shaft 12 as the rotation center, so that the fuselage and the front axle assembly 7 can both rotate around the axis of the gearbox II shaft 12, and the axis of the gearbox II shaft is also the rotation axis of the twisting waist and the rear axle, so as to realize the overall functional design of the whole machine "bending waist + twisting waist + fuselage leveling".

[0023] The front axle assembly 7 is rotatably mounted on the lower side of the fuselage with the axis of the gearbox II shaft 12 as the rotation center, so that both the fuselage and the front axle assembly 7 can rotate around the axis of the gearbox II shaft 12, so that the rotation center of the fuselage leveling and the front axle swinging are unified, so as to better adapt to the twisting waist and bending waist structure designed later, the structure is more compact, the flexibility of the tractor body adjustment is improved, and the overall functional design of the tractor is easier to realize.

[0024] In order to make the overall structure more compact, in this embodiment, the fuselage is provided with a swing groove / hole 17 running through the left and right sides thereof, the front axle assembly 7 is placed in the swing groove / hole 17, and there is a spacing between the front axle assembly 7 and the groove / hole wall of the swing groove / hole 17, the gearbox II shaft 12 is transmission connected to the front axle assembly 7, so that the front axle assembly 7 is embedded in the fuselage, which lowers the overall center of gravity and has a more compact structure, so that the front axle assembly 7 can rotate around the axis of the gearbox II shaft 12, so that the wheels or track structures installed at both ends can swing up and down to adapt to bumpy roads, ensuring that the wheels or tracks always maintain a large contact area with the road surface. Furthermore, in order to further optimize the coordination between the front axle swing and the fuselage leveling to achieve the coordination between the fuselage leveling and the front axle swing, the present embodiment further includes a leveling mechanism 15, which is connected to the fuselage and the front axle assembly 7 respectively, and can drive the fuselage and / or the front axle assembly 7 to rotate around the axis of the gearbox II shaft 12, and can keep the fuselage and / or the front axle assembly 7 at a preset rotation angle. Specifically, the leveling mechanism 15 includes two hydraulic cylinders or electric cylinders, which are arranged on both sides of the fuselage, one end of the hydraulic cylinder or electric cylinder is connected to the fuselage, and the other end is connected to the front axle assembly 7. The fuselage leveling and the swing of the front axle assembly 7 are achieved by controlling the extension and contraction of the hydraulic cylinder or electric cylinder. The two can act simultaneously or separately to ensure that for a certain road slope, the wheels or tracks on the front axle assembly 7 can be kept in good contact with the road surface and the fuselage is level. The overall structure is simple and easy to control.

[0025] Specifically, in order to better ensure that the front axle assembly 7 can swing in the swing groove / hole 17, in the present embodiment, a rear support hole is provided on the rear side wall of the swing groove / hole 17, and a rear swing sleeve 10 is rotatably installed in the rear support hole, and the rear swing sleeve 10 is coaxially arranged with the gearbox II shaft 12 and fixedly connected with the front axle assembly 7, so that the front axle assembly 7 can rotate around the axis of the gearbox II shaft 12; a front axle small bevel gear shaft 16 is coaxially installed at one end of the gearbox II shaft 12, and a front axle small bevel gear 9 is provided at the end of the front axle small bevel gear shaft 16, and correspondingly, a front axle large bevel gear 8 is provided in the front axle assembly 7, and the front axle small bevel gear shaft 16 rotatably passes through the rear swing sleeve 10 through the bearing, so that the front axle small bevel gear 9 is meshed with the front axle large bevel gear 8. The gearbox II shaft 12 is connected to the front axle assembly 7 through the meshing between the front axle pinion gear 9 and the front axle large bevel gear 8, so that the gearbox II shaft 12 transmits power to the front axle assembly 7. In order to ensure the support stability of the front axle assembly 7, a front support hole is provided on the front side wall of the swing slot / hole 17, and a front swing shaft 5 is rotatably installed in the front support hole. The front swing shaft 5 is coaxially arranged with the gearbox II shaft 12 and fixedly connected to the front axle assembly 7. In this way, through the support of the front swing shaft 5 and the rear swing shaft sleeve 10, the front axle assembly 7 can stably swing left and right around the axis of the gearbox II shaft 12, with higher stability and support strength, so as to better support the entire fuselage. At the same time, the gearbox II shaft 12 transmits power to the front axle assembly 7 through the front axle pinion gear shaft 16.

[0026] Since the weight of the fuselage is transferred to the front axle assembly 7 through the contact surfaces between the front swing shaft 5 and the rear swing shaft sleeve 10 and the front support hole and the rear support hole, there is a large pressure on the upper contact surfaces between the front swing shaft 5 and the front support hole and between the rear swing shaft sleeve 10 and the rear support hole. During the leveling of the fuselage and the swinging of the front axle assembly 7, the contact surfaces therein are easily worn. As for the conventional lower structure of the front axle assembly, it is connected to the gearbox through a long shaft. The long shaft is generally a multi-section structure. Each section is connected through a spline sleeve or a universal joint. There is a large radial clearance at the connection. Local wear of the shaft during use does not have much effect on the performance of the tractor as a whole. However, in this embodiment, since the front axle assembly 7 swings around the axis of the front swing shaft 5 and the rear swing shaft sleeve 10, when local wear occurs, the shaft will have a large eccentric lateral pressure, which may easily cause the shaft to bend and deform or cause the whole machine to vibrate greatly, or even cause damage to components such as the shaft and gears, resulting in a high failure rate and affecting the performance of the whole machine. Therefore, large local wear is not allowed in this embodiment. In this embodiment, the swing angle of the front axle assembly 7 is limited, so it is easy to cause local wear on the upper sides of the front swing shaft 5 and the rear swing shaft sleeve 10, as well as the upper sides of the front and rear support holes. Therefore, in order to improve the wear resistance, a wear-resistant bushing 4 and / or a wear-resistant pad 3 are provided between the front swing shaft 5 and the front support hole, and between the rear swing shaft sleeve 10 and the rear support hole. Specifically, a wear-resistant bushing 4 is sleeved on the shaft body of the front swing shaft 5 and the rear swing shaft sleeve 10 to avoid the problem of local radial wear between the shaft and the hole when the front axle swings. A wear-resistant pad 3 is provided at the position where the end surface or the limit step of the front swing shaft 5 and the rear swing shaft sleeve 10 and the front support hole and the rear support hole cooperate to solve the axial wear problem caused by gravity decomposition when the tractor is tilted in the front and rear directions. The wear-resistant bushing 4 and the wear-resistant pad 3 are both made of wear-resistant materials to improve their wear resistance.

[0027] Specifically, the fuselage includes a power unit 1 and a clutch housing 2, as well as a transfer case 11 and / or a gearbox 14, which are connected in sequence from front to back, and the gearbox I shaft 13 is connected to the power unit 1. In this way, the power unit 1, the clutch housing 2, the transfer case 11 and the gearbox 14 are connected in sequence to form the fuselage, which has a simple and more compact structure, does not require an additional support frame structure, and reduces its own weight. Of course, in actual application, the order and availability of each component can be flexibly adjusted according to the overall structure of the tractor, and the respective structural forms of the power unit 1, the clutch housing 2, the transfer case 11 and the gearbox 14 can also be flexibly adjusted.

[0028] Correspondingly, the lower side of one end of the clutch housing 2 near the transfer case 11 or the gearbox 14 is recessed upward to form a groove that penetrates the side end surface and the lower side of the clutch housing 2, so that the clutch housing 2 is L-shaped as a whole, and the groove cooperates with the transfer case 11 or the gearbox 14 to form a swing groove with a U-shaped groove structure. A reinforcing rib plate 6 is provided at the opening of the U-shaped groove, and the two ends of the reinforcing rib plate 6 are respectively connected to the clutch housing 2 and the transfer case 11 or the gearbox 14, so that the U-shaped groove and the reinforcing rib plate 6 enclose a swing hole. Among them, the reinforcing rib plate 6 is U-shaped, and its two ends are respectively connected to the clutch housing 2 and the housing of the transfer case 11 or the gearbox 14, and the middle part sinks downward, so that the swing groove / hole can provide a larger swing range for the front axle assembly 7, and has a certain connection strength to ensure the overall strength of the fuselage.

[0029] In summary, the utility model has a simple and compact structure, and the center of rotation of the body leveling and the front axle swing coincides, which can better adapt to the overall functional design of "bending waist + twisting waist + body leveling" of the mountain articulated tractor, thereby improving the adjustment flexibility of the mountain articulated tractor.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. A front axle swing mechanism of a mountain articulated tractor, comprising a body and a front axle assembly, wherein the body has a gearbox I shaft and a gearbox II shaft arranged in parallel up and down, wherein the gearbox I shaft is drivingly connected to the gearbox II shaft; characterized in that: The front axle assembly is rotatably mounted on the lower side of the fuselage with the axis of the gearbox II shaft as the rotation center, so that both the fuselage and the front axle assembly can rotate around the axis of the gearbox II shaft.

2. The front axle swing mechanism of a mountain articulated tractor according to claim 1, characterized in that: The fuselage is provided with a swing groove / hole running through the left and right sides thereof, the front axle assembly is placed in the swing groove / hole, and there is a spacing between the front axle assembly and the groove / hole wall of the swing groove / hole, and the gearbox II shaft is transmission-connected to the front axle assembly.

3. The front axle swing mechanism of a mountain articulated tractor according to claim 2, characterized in that: A rear supporting hole is provided on the rear side wall of the swing groove / hole, and a rear swing shaft sleeve is rotatably installed in the rear supporting hole. The rear swing shaft sleeve is coaxially arranged with the gearbox II shaft and fixedly connected with the front axle assembly, so that the front axle assembly can rotate around the axis of the gearbox II shaft; a first front axle small bevel gear shaft is coaxially installed at one end of the gearbox II shaft, and a first front axle small bevel gear is provided at the end of the first front axle small bevel gear shaft, and correspondingly, a front axle large bevel gear is provided in the front axle assembly, and the first front axle small bevel gear shaft can be rotatably passed through the rear swing shaft sleeve, so that the first front axle small bevel gear is meshed with the front axle large bevel gear.

4. The front axle swing mechanism of a mountain articulated tractor according to claim 3, characterized in that: A front supporting hole is provided on the front side wall of the swing slot / hole, in which a front swing shaft is rotatably installed. The front swing shaft is coaxially arranged with the gearbox II shaft and fixedly connected with the front axle assembly.

5. The front axle swing mechanism of a mountain articulated tractor according to claim 4, characterized in that: Wear-resistant bushings and / or wear-resistant pads are provided between the front swing shaft and the front support hole, and between the rear swing shaft sleeve and the rear support hole.

6. A front axle swing mechanism for a mountain articulated tractor according to any one of claims 1 to 5, characterized in that: The fuselage includes a power unit and a clutch housing, as well as a transfer case and / or a gearbox, which are connected in sequence from front to back, and the gearbox I shaft is connected to the power unit.

7. The front axle swing mechanism of a mountain articulated tractor according to claim 6, characterized in that: The lower side of one end of the clutch housing close to the transfer case or the gearbox is recessed upward to form a groove that runs through the side end surface and the lower side of the clutch housing, so that the clutch housing is L-shaped as a whole. The groove cooperates with the transfer case or the gearbox to form a swing groove with a U-shaped groove structure.

8. The front axle swing mechanism of a mountain articulated tractor according to claim 7, characterized in that: A reinforcing rib plate is provided at the opening of the U-shaped groove, and two ends of the reinforcing rib plate are respectively connected to the clutch housing and the transfer case or the gearbox, so that the U-shaped groove and the reinforcing rib plate enclose a swing hole.

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