Side suspension front axle suspension structure suitable for tractor

Abstract

The utility model relates to a side suspension front axle suspension structure suitable for a tractor, and belongs to the technical field of tractor equipment. Comprising a front drive axle assembly, a rocker arm, a hydraulic oil cylinder, a bracket, an angle sensor, an energy accumulator, a transmission supporting mechanism and a control mechanism. The front drive axle assembly is arranged in front of the rocker arm and connected with the rocker arm through the transmission supporting mechanism, the bracket is arranged above the front drive axle assembly and the rocker arm, the upper end and the lower end of the hydraulic oil cylinder are hinged to one end of the bracket and one end of the rocker arm respectively, the other end of the rocker arm is hinged to the bracket, and the angle sensor is installed on the bracket and connected with the rocker arm. The angle sensor is connected with the control mechanism, and the energy accumulator is installed on the bracket and connected with the hydraulic oil cylinder through a pipeline. According to the utility model, the shock caused by vertical vibration of the front wheels can be absorbed and relieved, and the shock transmitted from the ground is relieved and is not transmitted to the bracket as far as possible, so that the comfort of the tractor in the driving process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor equipment, in particular to a side-mounted suspended front axle suspension structure suitable for a tractor. Background Art

[0002] Tractors work on bumpy roads such as rugged farmland, paddy fields, construction sites, and field paths. Tractors are subject to severe ground impacts during driving. Because the tractors produced by the manufacturer are connected to the frame through a swing shaft, and the rear axle is rigidly connected to the frame, the bumps and vibrations are severe during driving and operation, which greatly affects the operating quality and efficiency of the tractor and may affect the safety and health of the driver. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a side-mounted suspended front axle suspension structure suitable for tractors to solve the above problems.

[0004] The technical solution of the utility model for solving the above technical problems is as follows: a side-mounted suspended front axle suspension structure suitable for a tractor, comprising: a front drive axle assembly, a rocker arm, a hydraulic cylinder, a bracket, an angle sensor, an accumulator, a transmission support mechanism and a control mechanism; the front drive axle assembly is arranged in front of the rocker arm, the front drive axle assembly and the rocker arm are connected through the transmission support mechanism, the bracket is arranged above the front drive axle assembly and the rocker arm, the upper and lower ends of the hydraulic cylinder are respectively hinged to the bracket and one end of the rocker arm, the other end of the rocker arm is hinged to the bracket, the angle sensor is installed on the bracket and connected to the rocker arm, the angle sensor is connected to the control mechanism, the accumulator is installed on the bracket and connected to the hydraulic cylinder through a pipeline.

[0005] The beneficial effects of the utility model are as follows: the front drive axle assembly is connected to the bracket of the chassis through the hydraulic cylinder, which is conducive to the automatic extension and retraction of the hydraulic cylinder in cooperation with the angle sensor and the control mechanism, thereby absorbing and alleviating the impact caused by the up and down vibration of the front wheel, reducing the impact transmitted from the ground and not transmitting it to the bracket as much as possible, thereby improving the comfort of the tractor during driving, and at the same time, the extension and retraction of the hydraulic cylinder also ensures the fit between the tire and the ground, improves the traction of the whole machine, and thus improves the working efficiency.

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

[0007] Further, the transmission support mechanism includes: a universal joint drive shaft, a support shaft, a drive shaft, a spherical bearing, and a support seat; the universal joint drive shaft is arranged on the support shaft, the inner ring of the spherical bearing is connected to the support seat through shaft hole fit, the outer ring is connected to the support shaft through shaft hole fit, and the drive shaft is connected to the universal joint drive shaft through spline fit.

[0008] The beneficial effect of adopting the above further solution is: the transmission support mechanism is beneficial to transmit the power of the tractor to the front drive axle assembly, so as to drive the movement of the tractor wheels.

[0009] Further, one end of the universal joint drive shaft away from the drive shaft passes through the rocker arm and is connected to the front drive axle assembly through spline fit.

[0010] The beneficial effect of adopting the above further solution is: the universal joint drive shaft passing through the rocker arm is beneficial to prevent the swing of the rocker arm from interfering with the universal joint drive shaft, and connecting to the front drive axle assembly is beneficial to transmit the power of the tractor to the front drive axle assembly.

[0011] Further, one end of the support shaft away from the drive shaft passes through the rocker arm and is connected to the front drive axle assembly through bolts.

[0012] The beneficial effect of adopting the above further solution is: the support shaft passing through the rocker arm is beneficial to prevent the swing of the rocker arm from interfering with the support shaft, and connecting to the front drive axle assembly is beneficial to provide support for the power transmission of the universal joint drive shaft.

[0013] Further, the support shaft is connected to the rocker arm through shaft hole fit.

[0014] The beneficial effect of adopting the above further solution is: shaft hole fit is beneficial to prevent the swing of the rocker arm from interfering with the support shaft.

[0015] Further, the bottom end of the hydraulic cylinder is hinged to one end of the rocker arm through a first pin shaft.

[0016] The beneficial effect of adopting the above further solution is: it is beneficial to make the rocker arm swing by the telescopic movement of the hydraulic cylinder, and then make the rocker arm and the bracket maintain a proper distance to ensure that the up and down undulation of the terrain does not affect the position of the bracket.

[0017] Further, the top end of the hydraulic cylinder is hinged to the bracket through a second pin shaft.

[0018] The beneficial effect of adopting the above further solution is: it is beneficial to keep the hydraulic cylinder in a hinged state with the rocker arm and the bracket, and then make the rocker arm and the bracket maintain a proper distance through the telescopic action of the hydraulic cylinder when the terrain undulation drives the rocker arm to swing.

[0019] Further, one end of the rocker arm away from the hydraulic cylinder is hinged to the bracket through a third pin shaft.

[0020] The beneficial effect of adopting the above further solution is that the hinged connection between the rocker arm and the bracket is conducive to enabling the rocker arm to swing around the third pin shaft under undulating terrain, and further enabling the angle sensor to detect the swing angle of the rocker arm, providing a judgment condition for the control mechanism to drive the hydraulic cylinder.

[0021] Further, a hydraulic valve group is arranged 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 solution is that the connection between the hydraulic valve group and the control mechanism 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 further controlling the opening and closing of the hydraulic valve group to realize the telescoping of the suspension cylinder.

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

[0024] The beneficial effect of adopting the above further solution is that the displacement of the wheels on different terrains is conducive to enabling the rocker arm to swing with the undulation of the terrain. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0026] Figure 2 is a side view of the overall structure provided by an embodiment of the present invention;

[0027] Figure 3 is a front view of the overall structure provided by an embodiment of the present invention.

[0028] Among them, Figure 1 the double-headed arrow indicates the installation orientation of each component.

[0029] In the drawings, the list of components represented by each reference numeral is as follows:

[0030] 1. Front drive axle assembly; 2. Rocker arm; 3. Hydraulic cylinder; 4. Bracket; 5. Angle sensor; 6. Accumulator; 7. Cardan drive shaft; 8. Support shaft; 9. Drive shaft; 10. Spherical bearing; 11. Support seat; 12. First pin shaft; 13. Second pin shaft; 14. Third pin shaft. Detailed Embodiment

[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 intended to limit the scope of the present invention.

[0032] AsFigures 1 to 3 As shown in the figure, a side-mounted suspended front axle suspension structure applicable to a tractor includes: a front drive axle assembly 1, a rocker arm 2, a hydraulic cylinder 3, a bracket 4, an angle sensor 5, an accumulator 6, a transmission support mechanism, and a control mechanism; the front drive axle assembly 1 is arranged in front of the rocker arm 2, the front drive axle assembly 1 and the rocker arm 2 are connected by the transmission support mechanism, the bracket 4 is arranged above the front drive axle assembly 1 and the rocker arm 2, the upper and lower ends of the hydraulic cylinder 3 are respectively hinged to the bracket 4 and one end of the rocker arm 2, the other end of the rocker arm 2 is hinged to the bracket 4, the angle sensor 5 is installed on the bracket 4 and connected to the rocker arm 2, the angle sensor 5 is connected to the control mechanism, and the accumulator 6 is installed on the bracket 4 and connected to the hydraulic cylinder 3 through a pipeline.

[0033] Among them, it should be noted that: in the technical solution of the present invention, the control mechanism is an existing control software, and the signal transmission between the control mechanism and the angle sensor 5 and the control of the hydraulic cylinder 3 both belong to the prior art.

[0034] The beneficial effects of the present invention are: connecting the front drive axle assembly and the bracket of the chassis through a hydraulic cylinder is beneficial to realizing the automatic telescoping of the hydraulic cylinder in cooperation with the angle sensor and the control mechanism, thereby absorbing and alleviating the impact caused by the up and down vibration of the front wheels, reducing the impact transmitted from the ground and minimizing the transmission to the bracket, thus improving the comfort during the driving of the tractor. At the same time, the telescoping of the hydraulic cylinder also ensures the adhesion of the tire to the ground, improves the traction of the whole machine, and thus improves the operation efficiency.

[0035] Preferably, as Figure 2 shown, the transmission support mechanism includes: a universal joint drive shaft 7, a support shaft 8, a drive shaft 9, a spherical bearing 10, and a support seat 11; the universal joint drive shaft 7 is arranged on the support shaft 8, the inner ring of the spherical bearing 10 is connected to the support seat 11 through shaft hole fit, the outer ring is connected to the support shaft 8 through shaft hole fit, and the drive shaft 9 is connected to the universal joint drive shaft 7 through spline fit.

[0036] The beneficial effect of adopting the above preferred scheme is: the transmission support mechanism is beneficial to transmitting the power of the tractor to the front drive axle assembly, thereby driving the movement of the tractor wheels.

[0037] Preferably, as Figure 1 and Figure 2 shown, one end of the universal joint drive shaft 7 away from the drive shaft 9 passes through the rocker arm 2 and is connected to the front drive axle assembly 1 through spline fit.

[0038] The beneficial effects of adopting the above preferred solution are as follows: The universal joint drive shaft passing through the rocker arm is beneficial to prevent the swing of the rocker arm from interfering with the universal joint drive shaft, and connecting with the front drive axle assembly is beneficial to transmit the power of the tractor to the front drive axle assembly.

[0039] Preferably, as Figure 1 and Figure 2 shown, one end of the support shaft 8 away from the drive shaft 9 passes through the rocker arm 2 and is connected to the front drive axle assembly 1 by bolts.

[0040] The beneficial effects of adopting the above preferred solution are as follows: The support shaft passing through the rocker arm is beneficial to prevent the swing of the rocker arm from interfering with the support shaft, and connecting with the front drive axle assembly is beneficial to provide support for the power transmission of the universal joint drive shaft.

[0041] Preferably, the support shaft 8 is connected to the rocker arm 2 by shaft-hole fit.

[0042] The beneficial effects of adopting the above preferred solution are as follows: Shaft-hole fit is beneficial to prevent the swing of the rocker arm from interfering with the support shaft.

[0043] Preferably, as Figure 1 and Figure 3 shown, the bottom end of the hydraulic cylinder 3 is hinged to one end of the rocker arm 2 by a first pin shaft 12.

[0044] The beneficial effects of adopting the above preferred solution are as follows: It is beneficial to make the rocker arm swing by the telescopic movement of the hydraulic cylinder, and then keep a proper distance between the rocker arm and the bracket to ensure that the up-and-down undulation of the terrain does not affect the position of the bracket.

[0045] Preferably, as Figure 1 and Figure 3 shown, the top end of the hydraulic cylinder 3 is hinged to the bracket 4 by a second pin shaft 13.

[0046] The beneficial effects of adopting the above preferred solution are as follows: It is beneficial to keep the hydraulic cylinder hinged to the rocker arm and the bracket, and then keep a proper distance between the rocker arm and the bracket through the telescopic action of the hydraulic cylinder when the terrain undulation drives the rocker arm to swing.

[0047] Preferably, as Figure 1 and Figure 3 shown, one end of the rocker arm 2 away from the hydraulic cylinder 3 is hinged to the bracket 4 by a third pin shaft 14.

[0048] The beneficial effects of adopting the above preferred solution are as follows: The hinged connection between the rocker arm and the bracket is beneficial to make the rocker arm swing around the third pin shaft under the terrain undulation, and then enable the angle sensor to detect the swing angle of the rocker arm, providing a judgment condition for the control mechanism to drive the hydraulic cylinder.

[0049] Preferably, a hydraulic valve group is provided on the pipeline connecting the accumulator 6 and the hydraulic cylinder 3, and the hydraulic valve group is connected to the control mechanism.

[0050] 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 judging the position change between the rocker arm and the bracket through the signal transmitted by the angle sensor, and then controlling the opening and closing of the hydraulic valve group to realize the telescopic movement of the suspension cylinder.

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

[0052] The beneficial effect of adopting the above preferred solution is that the wheels displace on different terrains, which is conducive to the rocker arm swaying with the undulation of the terrain.

[0053] The working process of the present invention is introduced below:

[0054] As Figures 1 to 3 shown, in the initial state, during the driving process of the tractor, the hydraulic cylinder 3 supports the rocker arm 2 to keep still, and the front drive axle assembly 1 fixedly connected to the rocker arm 2 cannot move up and down either. At this time, the front drive axle assembly 1 can swing left and right around the support shaft 8.

[0055] When the ground undulates, the front wheels of the vehicle are impacted by the ground, and the impact force is transmitted to the rocker arm 2 through the front drive axle assembly 1 and the support shaft 8, causing the rocker arm to rotate around the third pin shaft 14. When the angle sensor 5 detects the rotation of the rocker arm 2, it converts the angle change situation into an electrical signal and transmits it to the control mechanism. The control mechanism controls the hydraulic valve group according to the angle change situation of the rocker arm 2, injects or releases hydraulic oil into the two chambers of the hydraulic cylinder 3, so as to control the compression or elongation of the hydraulic cylinder 3, make the rocker arm 2 and the bracket 4 in a suitable relative position, and further prevent the impact caused by the up and down vibration of the front wheels from being transmitted to the vehicle body, thereby improving the riding comfort.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0057] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0058] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0059] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may be 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, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher level than the second feature in terms of horizontal height. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature in terms of horizontal height.

[0060] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0061] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A side-mounted suspended front axle suspension structure suitable for a tractor, characterized in that: include: A front drive axle assembly (1), a rocker arm (2), a hydraulic cylinder (3), a bracket (4), an angle sensor (5), an accumulator (6), a transmission support mechanism and a control mechanism; the front drive axle assembly (1) is arranged in front of the rocker arm (2); the front drive axle assembly (1) and the rocker arm (2) are connected via the transmission support mechanism; the bracket (4) is arranged above the front drive axle assembly (1) and the rocker arm (2); the upper and lower ends of the hydraulic cylinder (3) are respectively hinged to the bracket (4) and one end of the rocker arm (2); the other end of the rocker arm (2) is hinged to the bracket (4); the angle sensor (5) is mounted on the bracket (4) and connected to the rocker arm (2); the angle sensor (5) is connected to the control mechanism; the accumulator (6) is mounted on the bracket (4) and connected to the hydraulic cylinder (3) via a pipeline.

2. According to claim 1, a side-mounted suspended front axle suspension structure suitable for a tractor is characterized in that: The transmission support mechanism comprises: a universal joint transmission shaft (7), a support shaft (8), a transmission shaft (9), a spherical bearing (10) and a support seat (11); the universal joint transmission shaft (7) is arranged on the support shaft (8), the inner ring of the spherical bearing (10) is connected to the support seat (11) through an axial hole fit, the outer ring is connected to the support shaft (8) through an axial hole fit, and the transmission shaft (9) is connected to the universal joint transmission shaft (7) through a spline fit.

3. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 2, characterized in that: One end of the universal joint transmission shaft (7) away from the transmission shaft (9) passes through the rocker arm (2) and is connected to the front drive axle assembly (1) through spline fitting.

4. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 2, characterized in that: One end of the support shaft (8) away from the transmission shaft (9) passes through the rocker arm (2) and is connected to the front drive axle assembly (1) via bolts.

5. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 4, characterized in that: The support shaft (8) is connected to the rocker arm (2) through a shaft hole fit.

6. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 1, characterized in that: The bottom end of the hydraulic cylinder (3) is hinged to one end of the rocker arm (2) via a first pin shaft (12).

7. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 1, characterized in that: The top end of the hydraulic cylinder (3) is hinged to the bracket (4) via a second pin shaft (13).

8. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 1, characterized in that: One end of the rocker arm (2) away from the hydraulic cylinder (3) is hinged to the bracket (4) via a third pin shaft (14).

9. The side-mounted suspended front axle suspension structure suitable for a tractor according to claim 1, characterized in that: A hydraulic valve group is provided on the pipeline connecting the accumulator (6) and the hydraulic cylinder (3), and the hydraulic valve group is connected to the control mechanism.

10. The side-mounted suspended front axle suspension structure 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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