Suspension front drive axle of tractor with upper rocker arm

Abstract

The utility model relates to a suspension front drive axle of a rocker arm overhead type tractor, and belongs to the technical field of tractor equipment. Comprising a front axle assembly, a suspension rocker arm, two suspension oil cylinder assemblies, a bracket assembly, a connecting plate, a front axle connecting seat and an energy accumulator assembly, the bracket assembly and the connecting plate are both arranged above the front axle assembly and the suspension rocker arm, the suspension rocker arm is of a Z-shaped plate-shaped structure and is arranged at the rear end of the front axle assembly, the front end of the suspension rocker arm is connected with the top end of the front axle assembly, and the rear end of the suspension rocker arm is hinged to the end, away from the bracket assembly, of the connecting plate. The upper end and the lower end of the suspension oil cylinder assembly are hinged to the bracket assembly and the front axle connecting base respectively, and the energy accumulator assembly is installed on the bracket assembly and connected with the suspension oil cylinder assembly through a pipeline. According to the utility model, the suspension oil cylinder assembly and the interface of the suspension rocker arm are added on the basis of the existing tractor structure, so that the function of the suspension front axle of the whole tractor can be increased, and the generalization of the whole tractor is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor equipment, in particular to a rocker arm mounted type suspended front drive axle of a tractor. Background Art

[0002] As a configuration to improve the driving comfort of tractors, the suspended front axle has been increasingly used in the market. How to add a suspended front axle configuration to existing tractors without a suspended front axle is a major problem faced by tractor manufacturers. The traditional suspended front axle structure requires major adjustments to the tractor's iron cross, rigid bridge, fuel, intake and exhaust, and power-on systems to achieve the matching of the suspended front axle, and many solutions will affect the tractor's ground clearance. How to add a suspended front axle configuration with minimal changes to the entire machine at the lowest cost, to maximize the modularization of the tractor without affecting the basic performance parameters of the tractor is a major challenge faced by the OEMs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a rocker arm mounted type tractor suspended front drive axle to solve the above problem.

[0004] The utility model solves the above technical problems with the following technical solutions: a rocker arm mounted tractor suspended front drive axle, comprising: a front axle assembly, a suspended rocker arm, two suspended oil cylinder assemblies, a bracket assembly, a connecting plate, a front axle connecting seat, an accumulator assembly, a sensor and a control mechanism; the bracket assembly and the connecting plate are both arranged above the front axle assembly and the suspended rocker arm, the bracket assembly and the connecting plate are connected at one end close to each other, the suspended rocker arm is a Z-shaped plate structure, and the suspended rocker arm is arranged on the front axle The rear end of the suspension rocker arm is connected to the top of the front axle assembly, the rear end of the suspension rocker arm is hinged to an end of the connecting plate away from the bracket assembly, the front axle connecting seat is arranged at the bottom end of the front axle assembly, the upper and lower ends of the suspension cylinder assembly are respectively hinged to the bracket assembly and the front axle connecting seat, the accumulator assembly is installed on the bracket assembly and connected to the suspension cylinder assembly through a pipeline, and the sensor is installed on the front axle assembly and connected to the control mechanism.

[0005] The beneficial effects of the utility model are as follows: the suspended front axle structure of the utility model can realize the addition of the suspended front axle function of the whole vehicle only by adding a suspended oil cylinder assembly and an interface of a suspended rocker arm on the basis of the front axle assembly, the bracket assembly and the connecting plate of the existing tractor, without adjusting the iron cross, the rigid bridge, the fuel, the intake and exhaust, and the power-on system on the original tractor, and without changing the ground clearance of the original tractor, thus realizing the universalization of the whole vehicle to the greatest extent; the suspended rocker arm is set as a Z-shaped structure, which is conducive to bypassing the engine oil pan from below, ensuring the universalization of the tractor engine.

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

[0007] Furthermore, a front axle limiting shaft is arranged at the front end of the front axle assembly, a limiting groove is arranged at the top end of the front axle connecting seat, and the front axle limiting shaft is adapted to be arranged in the limiting groove.

[0008] The beneficial effect of adopting the above further solution is that the front axle limit shaft is adapted to be arranged in the limit groove, which is beneficial to improving the connection strength of the rocker arm while achieving the swing limit of the front axle assembly.

[0009] Furthermore, it also includes a plurality of locking bolts, which pass through the front axle connecting seat and the front axle assembly and are connected to the front end of the suspension rocker arm.

[0010] The beneficial effect of adopting the above further solution is that the locking bolt is conducive to fixing the front axle connecting seat, the front axle assembly and the front end of the suspension rocker arm, thereby improving the stability of the suspension rocker arm during operation.

[0011] Furthermore, the bottom ends of the two suspension cylinder assemblies are respectively hinged to the two ends of the front axle connecting seat through two front suspension rocker arm pins.

[0012] The beneficial effect of adopting the above further scheme is that it is conducive to achieving the up and down displacement adjustment of the front axle connecting seat and the front axle assembly under the telescopic driving action of the suspension cylinder assembly, thereby ensuring the ground clearance adjustment of the front axle assembly, and then realizing the function of the suspended front axle.

[0013] Furthermore, the top ends of the two suspension cylinder assemblies are hinged to the two ends of the bracket assembly through two bracket pins respectively.

[0014] The beneficial effect of adopting the above further scheme is: it is conducive to providing support for the installation of the suspension cylinder assembly, and then under the telescopic driving action of the suspension cylinder assembly, the up and down displacement of the front axle connecting seat and the front axle assembly is adjusted, thereby ensuring the ground clearance adjustment of the front axle assembly and realizing the function of the suspended front axle.

[0015] Furthermore, the connecting plate includes a right connecting plate and a left connecting plate, and the front ends of the right connecting plate and the left connecting plate are respectively connected to the rear end of the bracket assembly.

[0016] The beneficial effect of adopting the above further scheme is that the chassis body system composed of the right connecting plate, the left connecting plate and the bracket assembly is conducive to connecting with the added suspension cylinder assembly and the suspension rocker arm, thereby assembling the functional configuration of the suspended front axle on the existing tractor.

[0017] Furthermore, both sides of the rear end of the suspension rocker arm are hinged to the side wall of the right connecting plate and the side wall of the left connecting plate through two rear suspension rocker arm pins respectively.

[0018] The beneficial effect of adopting the above further scheme is that it is conducive to making the suspension rocker arm rotate with the front axle assembly around the rear suspension rocker arm pin shaft, thereby realizing the posture adjustment of the front part of the tractor, realizing the movement of the center of mass of the whole machine, improving the tractor's traction, and achieving the purpose of fuel saving and high efficiency of the whole machine.

[0019] Furthermore, a hydraulic valve group is provided on the pipeline connecting the accumulator assembly and the suspension cylinder assembly, and the hydraulic valve group is connected to the control mechanism.

[0020] The beneficial effect of adopting the above further solution is that the hydraulic valve group is connected to the control mechanism, which is conducive to the control mechanism controlling the opening and closing of the hydraulic valve group to achieve the extension and retraction of the suspension cylinder.

[0021] Furthermore, the tractor engine oil pan is arranged above the suspended rocker arm Z-shaped structure.

[0022] The beneficial effect of adopting the above further solution is that the Z-shaped suspension rocker arm can bypass the engine oil pan from below, ensuring the universality of the engine.

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

[0024] The beneficial effect of adopting the above further solution is that the wheels are displaced on different terrains, which is conducive to making the front axle assembly rise and fall with the terrain, thereby changing the ground clearance and providing a prerequisite for the operation of the suspension cylinder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure after the overall structure is assembled according to an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the connection of the bracket assembly, the right connecting plate and the left connecting plate provided in an embodiment of the utility model;

[0027] Figure 3An exploded schematic diagram of the overall structure provided by an embodiment of the utility model after removing the bracket assembly, the right connecting plate and the left connecting plate.

[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 axle assembly; 2. Suspension rocker arm; 3. Suspension cylinder assembly; 4. Bracket assembly; 5. Right connecting plate; 6. Left connecting plate; 7. Front axle connecting seat; 8. Accumulator assembly; 9. Locking bolt; 10. Rear suspension rocker arm pin; 11. Front suspension rocker arm pin; 12. Bracket pin; 13. Front axle limit shaft; 14. Limit groove. 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, a rocker arm-mounted tractor suspended front drive axle comprises: a front axle assembly 1, a suspended rocker arm 2, two suspended oil cylinder assemblies 3, a bracket assembly 4, a connecting plate, a front axle connecting seat 7, an accumulator assembly 8, a sensor and a control mechanism; the bracket assembly 4 and the connecting plate are both arranged above the front axle assembly 1 and the suspended rocker arm 2, the bracket assembly 4 and the connecting plate are connected at one end close to each other, the suspended rocker arm 2 is a Z-shaped plate structure, the suspended rocker arm 2 is arranged at the rear end of the front axle assembly 1, and the The front end of the suspension rocker arm 2 is connected to the top end of the front axle assembly 1, the rear end of the suspension rocker arm 2 is hinged to the end of the connecting plate away from the bracket assembly 4, the front axle connecting seat 7 is arranged at the bottom end of the front axle assembly 1, the upper and lower ends of the suspension cylinder assembly 3 are respectively hinged to the bracket assembly 4 and the front axle connecting seat 7, the accumulator assembly 8 is installed on the bracket assembly 4 and connected to the suspension cylinder assembly 3 through a pipeline, and the sensor is installed on the front axle assembly 1 and 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 suspension cylinder assembly 3 are both existing technologies.

[0034] The beneficial effects of the utility model are as follows: the suspended front axle structure of the utility model can realize the addition of the suspended front axle function of the whole vehicle only by adding a suspended oil cylinder assembly and an interface of a suspended rocker arm on the basis of the front axle assembly, the bracket assembly and the connecting plate of the existing tractor, without adjusting the iron cross, the rigid bridge, the fuel, the intake and exhaust, and the power-on system on the original tractor, and without changing the ground clearance of the original tractor, thus realizing the universalization of the whole vehicle to the greatest extent; the suspended rocker arm is set as a Z-shaped structure, which is conducive to bypassing the engine oil pan from below, ensuring the universalization of the tractor engine.

[0035] Preferably, Figure 3 As shown, a front axle limiting shaft 13 is provided at the front end of the front axle assembly 1 , a limiting groove 14 is provided at the top end of the front axle connecting seat 7 , and the front axle limiting shaft 13 is adapted to be arranged in the limiting groove 14 .

[0036] The beneficial effect of adopting the above-mentioned preferred solution is that the front axle limit shaft is adapted to be arranged in the limit groove, which is beneficial to improving the connection strength of the rocker arm while achieving the swing limit of the front axle assembly.

[0037] Preferably, Figure 3 As shown, it also includes a plurality of locking bolts 9 , which pass through the front axle connecting seat 7 and the front axle assembly 1 and are connected to the front end of the suspension rocker arm 2 .

[0038] The beneficial effect of adopting the above preferred solution is that the locking bolt is conducive to fixing the front axle connecting seat, the front axle assembly and the front end of the suspension rocker arm, thereby improving the stability of the suspension rocker arm during operation.

[0039] Preferably, Figure 3 As shown, the bottom ends of the two suspension cylinder assemblies 3 are hinged to the two ends of the front axle connecting seat 7 through two front suspension rocker arm pins 11 respectively.

[0040] The beneficial effect of adopting the above-mentioned preferred scheme is that it is conducive to adjusting the up and down displacement of the front axle connecting seat and the front axle assembly under the telescopic driving action of the suspension cylinder assembly, thereby ensuring the ground clearance adjustment of the front axle assembly and realizing the function of the suspended front axle.

[0041] Preferably, Figure 3 As shown, the top ends of the two suspension cylinder assemblies 3 are hinged to the two ends of the bracket assembly 4 through two bracket pins 12 respectively.

[0042] The beneficial effect of adopting the above-mentioned preferred scheme is: it is conducive to providing support for the installation of the suspension cylinder assembly, and then under the telescopic driving action of the suspension cylinder assembly, the up and down displacement of the front axle connecting seat and the front axle assembly is adjusted, thereby ensuring the ground clearance adjustment of the front axle assembly and realizing the function of the suspended front axle.

[0043] Preferably, Figure 2 As shown, the connecting plate includes a right connecting plate 5 and a left connecting plate 6, and the front ends of the right connecting plate 5 and the left connecting plate 6 are respectively connected to the rear end of the bracket assembly 4.

[0044] The beneficial effect of adopting the above preferred solution is that the chassis body system composed of the right connecting plate, the left connecting plate and the bracket assembly is conducive to connecting with the added suspension cylinder assembly and the suspension rocker arm, thereby assembling the functional configuration of the suspended front axle on the existing tractor.

[0045] Preferably, Figure 1 As shown, both sides of the rear end of the suspension rocker arm 2 are hinged to the side wall of the right connecting plate 5 and the side wall of the left connecting plate 6 through two rear suspension rocker arm pins 10 respectively.

[0046] The beneficial effect of adopting the above-mentioned preferred scheme is that it is conducive to making the suspension rocker arm rotate with the front axle assembly around the rear suspension rocker arm pin shaft, thereby realizing the posture adjustment of the front part of the tractor, realizing the movement of the center of mass of the whole machine, improving the tractor's traction, and achieving the purpose of fuel saving and high efficiency of the whole machine.

[0047] Preferably, a hydraulic valve group is provided on the pipeline connecting the accumulator assembly 8 and the suspension cylinder assembly 3, and the hydraulic valve group is connected to the control mechanism.

[0048] The beneficial effect of adopting the above preferred solution is that the hydraulic valve group is connected to the control mechanism, which is conducive to the control mechanism controlling the opening and closing of the hydraulic valve group to achieve the extension and retraction of the suspension cylinder.

[0049] Preferably, the tractor engine oil pan is arranged above the Z-shaped structure of the suspension rocker arm 2.

[0050] The beneficial effect of adopting the above preferred solution is that the Z-shaped suspension rocker arm can bypass the engine oil pan from below, ensuring the universality of the engine.

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

[0052] The beneficial effect of adopting the above preferred solution is that the wheels move on different terrains, which is conducive to making the front axle assembly rise and fall with the terrain, thereby changing the ground clearance and providing a prerequisite for the operation of the suspension cylinder assembly.

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

[0054] like Figures 1 to 3As shown, when the tractor is working in the field, the tires rise and fall according to the changes in the terrain, driving the front axle assembly 1 and the front axle connecting seat 7 to rise and fall with the terrain. When the sensor detects the change in the ground clearance of the front axle assembly 1, the signal is transmitted to the control mechanism, and the control mechanism controls the opening and closing of the hydraulic valve group according to the signal, and the hydraulic oil is passed into or stopped into the suspension cylinder assembly 3 through the accumulator assembly 8, so that the suspension cylinder assembly 3 can complete the extension and contraction. During the extension and contraction of the suspension cylinder assembly 3, the suspension rocker arm 2 will drive the front axle assembly 1 to rotate around the rear suspension rocker arm pin 10, thereby realizing the adjustment of the front posture of the tractor, the adjustment of the ground clearance of the front axle assembly 1 and the movement of the center of mass of the whole machine, thereby improving the tractor traction and achieving the purpose of fuel saving and high efficiency of the whole machine. When the tractor is in transportation operation, the suspension cylinder assembly 3 and the accumulator assembly 8 realize the function of filtering and shock absorption through the control mechanism, thereby improving the driving comfort.

[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. A rocker arm mounted tractor suspended front drive axle, characterized in that: include: A front axle assembly (1), a suspension rocker arm (2), two suspension oil cylinder assemblies (3), a bracket assembly (4), a connecting plate, a front axle connecting seat (7), an accumulator assembly (8), a sensor and a control mechanism; the bracket assembly (4) and the connecting plate are both arranged above the front axle assembly (1) and the suspension rocker arm (2); the bracket assembly (4) and the connecting plate are connected at one end close to each other; the suspension rocker arm (2) is a Z-shaped plate structure; the suspension rocker arm (2) is arranged at the rear end of the front axle assembly (1); and the front end of the suspension rocker arm (2) is connected to the front axle assembly (1). The front axle assembly (1) is connected to the top of the front axle assembly (1), the rear end of the suspension rocker arm (2) is hinged to one end of the connection plate away from the bracket assembly (4), the front axle connecting seat (7) is arranged at the bottom of the front axle assembly (1), the upper and lower ends of the suspension cylinder assembly (3) are respectively hinged to the bracket assembly (4) and the front axle connecting seat (7), the accumulator assembly (8) is installed on the bracket assembly (4) and is connected to the suspension cylinder assembly (3) through a pipeline, and the sensor is installed on the front axle assembly (1) and is connected to the control mechanism.

2. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: A front axle limiting shaft (13) is arranged at the front end of the front axle assembly (1), a limiting groove (14) is arranged at the top end of the front axle connecting seat (7), and the front axle limiting shaft (13) is adapted to be arranged in the limiting groove (14).

3. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: It also includes a plurality of locking bolts (9), wherein the locking bolts (9) pass through the front axle connecting seat (7) and the front axle assembly (1), and are connected to the front end of the suspension rocker arm (2).

4. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: The bottom ends of the two suspension cylinder assemblies (3) are respectively hinged to the two ends of the front axle connecting seat (7) through two front suspension rocker arm pins (11).

5. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: The top ends of the two suspension cylinder assemblies (3) are respectively hinged to the two ends of the bracket assembly (4) through two bracket pins (12).

6. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: The connecting plate comprises a right connecting plate (5) and a left connecting plate (6), and the front ends of the right connecting plate (5) and the left connecting plate (6) are respectively connected to the rear end of the bracket assembly (4).

7. The rocker arm mounted tractor suspended front drive axle according to claim 6, characterized in that: Both sides of the rear end of the suspension rocker arm (2) are respectively hinged to the side wall of the right connecting plate (5) and the side wall of the left connecting plate (6) through two rear suspension rocker arm pins (10).

8. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: A hydraulic valve group is provided on the pipeline connecting the accumulator assembly (8) and the suspension cylinder assembly (3), and the hydraulic valve group is connected to the control mechanism.

9. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: The tractor engine oil pan is arranged above the Z-shaped structure of the suspension rocker arm (2).

10. The rocker arm mounted tractor suspended front drive axle according to claim 1, characterized in that: Both ends of the front axle assembly (1) are connected to the wheels via bolts.

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