Upper hinged type suspension front drive axle suitable for tractor

Abstract

The utility model relates to an upper hinged type suspension front drive axle suitable for a tractor, and belongs to the technical field of tractor equipment. Comprising a front drive axle assembly, a bracket rocker arm, two hydraulic oil cylinders, a bracket, an energy accumulator, a sensor and a control mechanism, the front end of the bracket rocker arm is hinged to the top end of the front drive axle assembly, the rear end of the bracket rocker arm is hinged to the bottom end of the bracket, the two hydraulic oil cylinders are arranged on the two sides of the front end of the bracket respectively, and the upper ends and the lower ends of the hydraulic oil cylinders are hinged to the front end of the bracket and the front drive axle assembly respectively. The energy accumulator is installed on the front drive axle assembly and connected with the hydraulic oil cylinder through a pipeline, and the sensor is arranged at the bottom end of the side wall of the bracket and connected with the control mechanism. The upper hinged type front axle is compact in structure and small in occupied space, the view field is guaranteed, meanwhile, cost is saved, and the upper hinged type front axle can be applied to a common tractor.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor equipment, in particular to an upper articulated suspended front drive axle suitable for a tractor. Background Art

[0002] There are two types of connection methods for the front drive axle of a tractor: front and rear trunnion connection and upper articulation. Most of the existing suspended front axle structures of ordinary tractors on the market are front and rear trunnion connection suspended front axles, because upper articulated front axles are mostly used for large tractors and have high requirements for vision. If upper articulated front axles are directly applied to ordinary tractors, it will seriously affect the height and vision of the ordinary tractor cab, which is not conducive to safe driving. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an upper articulated suspended front drive axle suitable for a tractor to solve the above-mentioned problem.

[0004] The utility model solves the above-mentioned technical problems with the following technical solutions: an upper articulated suspended front drive axle suitable for a tractor, comprising: a front drive axle assembly, a bracket rocker arm, two hydraulic cylinders, a bracket, an accumulator, a sensor and a control mechanism; the front end of the bracket rocker arm is hinged to the top end of the front drive axle assembly, the rear end of the bracket rocker arm is hinged to the bottom end of the bracket, the two hydraulic cylinders are respectively arranged on both sides of the front end of the bracket, the upper and lower ends of the hydraulic cylinders are respectively hinged to the front end of the bracket and the front drive axle assembly, the accumulator is installed on the front drive axle assembly and connected to the hydraulic cylinder through a pipeline, and the sensor is arranged at the bottom end of the bracket side wall and connected to the control mechanism.

[0005] The beneficial effects of the utility model are as follows: the front drive axle assembly is arranged as a whole under the bracket, the swinging of the bracket rocker arm on the front drive axle assembly and the bracket, and the suspension limit achieved by the hydraulic cylinder are all integrated into the hinged position, so that the structure of the utility model is compact and the space occupancy is small. While ensuring the field of vision, it also saves costs, which is conducive to the application of the upper articulated front axle to ordinary tractors.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the bracket rocker arm is a Y-shaped structure, the rear end of the bracket rocker arm is a forked end of the Y-shaped structure, and the front end of the bracket rocker arm is provided with a through hole in the up and down directions.

[0008] The beneficial effect of adopting the above further solution is that the Y-shaped structure of the bracket rocker arm is conducive to the bracket rocker arm being simultaneously articulated with the front drive axle assembly and the bracket, making the structure of the upper articulated front axle more compact and occupying less space.

[0009] Furthermore, a hinge block is provided at the top end of the front drive axle assembly, and the hinge block is adapted to be arranged in the through hole.

[0010] The beneficial effect of adopting the above further solution is that the hinge block is adapted to be arranged in the through hole at the front end of the bracket rocker arm, which is conducive to the front end of the bracket rocker arm rotating around the hinge block.

[0011] Furthermore, it also includes a center rocker arm pin shaft, which passes through the through hole at the front end of the bracket rocker arm and the hinge block along the front-to-back direction.

[0012] The beneficial effect of adopting the above further solution is that the centrally placed rocker arm pin is conducive to limiting the hinge block in the through hole at the front end of the bracket rocker arm, thereby enabling the front end of the bracket rocker arm to rotate around the hinge block.

[0013] Furthermore, two bracket hinge plates are respectively arranged on both sides of the bottom end of the bracket, and both sides of the rear end of the bracket rocker arm are respectively hinged to the two bracket hinge plates.

[0014] The beneficial effect of adopting the above further solution is that the bracket hinge plate is hinged to the rear end of the bracket rocker arm, which is conducive to transmitting power to the bracket when the bracket rocker arm rotates.

[0015] Furthermore, both sides of the rear end of the bracket rocker arm are hinged to the two bracket hinge plates through two rocker arm pins respectively.

[0016] The beneficial effect of adopting the above further solution is that the rocker arm pin is conducive to achieving a stable articulation between the rear end of the bracket rocker arm and the bracket.

[0017] Furthermore, the bottom end of the hydraulic cylinder is hinged to the front drive axle assembly via a lower cylinder pin.

[0018] The beneficial effect of adopting the above further solution is that the hinged connection between the hydraulic cylinder and the bracket is conducive to providing support for the hydraulic cylinder when the hydraulic cylinder is extended and retracted, and also prevents the bracket from rising and falling with the rise and fall of the front drive axle assembly.

[0019] Furthermore, the top end of the hydraulic cylinder is hinged to the side wall of the front end of the bracket through an upper cylinder pin.

[0020] The beneficial effect of adopting the above further solution is that the hinged connection between the hydraulic cylinder and the bracket is conducive to providing support for the hydraulic cylinder when the hydraulic cylinder is extended and retracted, and also prevents the bracket from rising and falling with the rise and fall of the front drive axle assembly.

[0021] Furthermore, a hydraulic valve group is provided on the pipeline connecting the accumulator and the hydraulic cylinder, and the hydraulic valve group is connected to the control mechanism.

[0022] The beneficial effect of adopting the above further scheme is that the hydraulic valve group is connected to the control mechanism, which is conducive to the control mechanism to judge the position change between the rocker arm and the bracket through the signal transmitted by the angle sensor, and then control the opening and closing of the hydraulic valve group to achieve the extension and retraction of the suspension cylinder.

[0023] Furthermore, both ends of the front drive axle assembly are connected to the wheels via bolts respectively.

[0024] The beneficial effect of adopting the above further solution is that the wheels are displaced on different terrains, which helps the rocker arm to swing with the ups and downs of the terrain. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0026] Figure 2 The overall structure front view provided for the embodiment of the utility model;

[0027] Figure 3 A side view of the overall structure provided for an embodiment of the utility model.

[0028] in, Figure 1 The double-headed arrows in the figure indicate the installation positions of the components.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Front drive axle assembly; 2. Bracket rocker arm; 3. Hydraulic cylinder; 4. Bracket; 5. Accumulator; 6. Rocker arm pin; 7. Center rocker arm pin; 8. Lower cylinder pin; 9. Upper cylinder pin; 11. Articulated block; 41. Bracket articulated plate. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figures 1 to 3 As shown, an upper articulated suspended front drive axle suitable for a tractor comprises: a front drive axle assembly 1, a bracket rocker arm 2, two hydraulic cylinders 3, a bracket 4, an accumulator 5, a sensor and a control mechanism; the front end of the bracket rocker arm 2 is hinged to the top end of the front drive axle assembly 1, the rear end of the bracket rocker arm 2 is hinged to the bottom end of the bracket 4, the two hydraulic cylinders 3 are respectively arranged on both sides of the front end of the bracket 4, the upper and lower ends of the hydraulic cylinders 3 are respectively hinged to the front end of the bracket 4 and the front drive axle assembly 1, the accumulator 5 is installed on the front drive axle assembly 1, and is connected to the hydraulic cylinders 3 through a pipeline, and the sensor is arranged at the bottom end of the side wall of the bracket 4 and is connected to the control mechanism.

[0033] It should be noted that: in the technical solution of the present utility model, the control mechanism is the existing control software, and the signal transmission between the control mechanism and the sensor and the control of the hydraulic cylinder 3 are both existing technologies.

[0034] The beneficial effects of the utility model are as follows: the front drive axle assembly is arranged as a whole under the bracket, the swinging of the bracket rocker arm on the front drive axle assembly and the bracket, and the suspension limit achieved by the hydraulic cylinder are all integrated into the hinged position, so that the structure of the utility model is compact and the space occupancy is small. While ensuring the field of vision, it also saves costs, which is conducive to the application of the upper articulated front axle to ordinary tractors.

[0035] Preferably, Figure 1 As shown, the bracket rocker arm 2 is a Y-shaped structure, the rear end of the bracket rocker arm 2 is a forked end of the Y-shaped structure, and the front end of the bracket rocker arm 2 is provided with a through hole in the up and down directions.

[0036] The beneficial effect of adopting the above preferred solution is that the Y-shaped structure of the bracket rocker arm is conducive to the bracket rocker arm being simultaneously articulated with the front drive axle assembly and the bracket, making the structure of the upper articulated front axle more compact and occupying less space.

[0037] Preferably, Figure 1 As shown, a hinge block 11 is disposed at the top end of the front drive axle assembly 1 , and the hinge block 11 is adapted to be disposed in the through hole.

[0038] The beneficial effect of adopting the above preferred solution is that the hinge block is adapted to be arranged in the through hole at the front end of the bracket rocker arm, which is conducive to the front end of the bracket rocker arm rotating around the hinge block.

[0039] Preferably, Figure 1 As shown, it also includes a center rocker arm pin shaft 7, and the center rocker arm pin shaft 7 passes through the through hole at the front end of the bracket rocker arm 2 and the hinge block 11 along the front-to-back direction.

[0040] The beneficial effect of adopting the above preferred solution is that the central rocker arm pin is conducive to limiting the hinge block in the through hole at the front end of the bracket rocker arm, thereby enabling the front end of the bracket rocker arm to rotate around the hinge block.

[0041] Preferably, Figure 1 As shown, two bracket hinge plates 41 are respectively arranged on both sides of the bottom end of the bracket 4, and both sides of the rear end of the bracket rocker arm 2 are respectively hinged to the two bracket hinge plates 41.

[0042] The beneficial effect of adopting the above preferred solution is that the bracket hinge plate is hinged to the rear end of the bracket rocker arm, which is conducive to transmitting power to the bracket when the bracket rocker arm rotates.

[0043] Preferably, Figure 1 and Figure 3 As shown, both sides of the rear end of the bracket rocker arm 2 are hinged to the two bracket hinge plates 41 through two rocker arm pins 6 respectively.

[0044] The beneficial effect of adopting the above preferred solution is that the rocker arm pin is conducive to achieving a stable hinge connection between the rear end of the bracket rocker arm and the bracket.

[0045] Preferably, Figure 1 and Figure 2 As shown, the bottom end of the hydraulic cylinder 3 is hinged to the front drive axle assembly 1 through a lower cylinder pin 8.

[0046] The beneficial effect of adopting the above preferred solution is that the hinged connection between the hydraulic cylinder and the bracket is conducive to providing support for the hydraulic cylinder when the hydraulic cylinder is extended and retracted, and also prevents the bracket from rising and falling with the rise and fall of the front drive axle assembly.

[0047] Preferably, Figure 1 and Figure 2 As shown, the top end of the hydraulic cylinder 3 is hinged to the side wall of the front end of the bracket 4 through the upper cylinder pin 9.

[0048] The beneficial effect of adopting the above preferred solution is that the hinged connection between the hydraulic cylinder and the bracket is conducive to providing support for the hydraulic cylinder when the hydraulic cylinder is extended and retracted, and also prevents the bracket from rising and falling with the rise and fall of the front drive axle assembly.

[0049] Preferably, a hydraulic valve group is provided on the pipeline connecting the accumulator 5 and the hydraulic cylinder 3, and the hydraulic valve group is connected to the control mechanism.

[0050] The beneficial effect of adopting the above-mentioned preferred scheme is that the hydraulic valve group is connected to the control mechanism, which is conducive to enabling the control mechanism to judge the position change between the rocker arm and the bracket through the signal transmitted by the angle sensor, and then control the opening and closing of the hydraulic valve group to achieve the extension and retraction of the suspension cylinder.

[0051] Preferably, both ends of the front drive axle assembly 1 are connected to the wheels via bolts respectively.

[0052] The beneficial effect of adopting the above preferred solution is that the wheels are displaced on different terrains, which helps the rocker arm to swing with the ups and downs of the terrain.

[0053] The working process of the utility model is introduced below:

[0054] like Figures 1 to 3As shown, during the driving process of the tractor, the front wheels at both ends of the front drive axle assembly 1 rise and fall with the undulation of the terrain, and at the same time, the power is transmitted to the bracket 4 through the bracket rocker arm 2, so that the bracket 4 also has a tendency to float up and down with the undulation of the terrain, but at the same time, the sensor at the bottom end of the side wall of the bracket 4 will continuously detect the height change of the tire when passing through the ground, and feed back the displacement signal to the control mechanism in real time. The control mechanism will operate the hydraulic valve group after calculating and analyzing the displacement change feedback from the sensor, and pump oil or return oil to the hydraulic cylinder 3 at a suitable oil pressure and speed, thereby controlling the compression or extension of the hydraulic cylinder 3, lifting or lowering the bracket 4, thereby adjusting the center of gravity of the whole vehicle, offsetting the negative effects brought about by the change of the center of gravity, isolating the impact of the ground to increase the smoothness, passability and safety of driving.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An upper articulated suspended front drive axle suitable for a tractor, characterized in that: include: A front drive axle assembly (1), a bracket rocker arm (2), two hydraulic cylinders (3), a bracket (4), an accumulator (5), a sensor and a control mechanism; the front end of the bracket rocker arm (2) is hinged to the top end of the front drive axle assembly (1), the rear end of the bracket rocker arm (2) is hinged to the bottom end of the bracket (4), the two hydraulic cylinders (3) are respectively arranged on both sides of the front end of the bracket (4), the upper and lower ends of the hydraulic cylinders (3) are respectively hinged to the front end of the bracket (4) and the front drive axle assembly (1), the accumulator (5) is installed on the front drive axle assembly (1), and is connected to the hydraulic cylinder (3) through a pipeline, and the sensor is arranged at the bottom end of the side wall of the bracket (4) and is connected to the control mechanism.

2. The upper articulated suspended front drive axle suitable for a tractor according to claim 1, characterized in that: The bracket rocker arm (2) is a Y-shaped structure, the rear end of the bracket rocker arm (2) is a forked end of the Y-shaped structure, and the front end of the bracket rocker arm (2) is provided with a through hole in the up-and-down direction.

3. The upper articulated suspended front drive axle suitable for a tractor according to claim 2, characterized in that: A hinge block (11) is arranged at the top end of the front drive axle assembly (1), and the hinge block (11) is adapted to be arranged in the through hole.

4. The upper articulated suspended front drive axle suitable for a tractor according to claim 3, characterized in that: It also includes a central rocker arm pin shaft (7), which passes through the through hole at the front end of the bracket rocker arm (2) and the hinge block (11) in the front-to-back direction.

5. The upper articulated suspended front drive axle suitable for a tractor according to claim 2, characterized in that: Two bracket hinge plates (41) are respectively arranged on both sides of the bottom end of the bracket (4), and both sides of the rear end of the bracket rocker arm (2) are respectively hinged to the two bracket hinge plates (41).

6. The upper articulated suspended front drive axle suitable for a tractor according to claim 5, characterized in that: The two sides of the rear end of the bracket rocker arm (2) are respectively hinged to the two bracket hinge plates (41) via two rocker arm pins (6).

7. The upper articulated suspended front drive axle suitable for a tractor according to claim 1, characterized in that: The bottom end of the hydraulic cylinder (3) is hinged to the front drive axle assembly (1) via a lower cylinder pin (8).

8. The upper articulated suspended front drive axle suitable for a tractor according to claim 1, characterized in that: The top end of the hydraulic cylinder (3) is hinged to the side wall of the front end of the bracket (4) via an upper cylinder pin shaft (9).

9. The upper articulated suspended front drive axle suitable for a tractor according to claim 1, characterized in that: A hydraulic valve group is provided on the pipeline connecting the accumulator (5) and the hydraulic cylinder (3), and the hydraulic valve group is connected to the control mechanism.

10. The upper articulated suspended front drive axle suitable for a tractor according to claim 1, characterized in that: Both ends of the front drive axle assembly (1) are connected to the wheels via bolts respectively.

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