Rocker arm centrally-mounted tractor non-independent suspension front drive axle
By designing a rocker mid-mounted non-independent suspended front drive axle on the tractor, the problem of increasing size and reducing operating flexibility when the tractor is increased when the front loading, front PTO, and front lifting configuration is solved, and space saving and overall machine performance are achieved.
Patent Information
- Application Number
- CN202422313723.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-23
AI Technical Summary
When existing tractors increase the overall size of front loading, front PTO and front lifting configurations, the existing tractors have increased, reducing operating flexibility. Especially for tractors matching non-independent suspended front axles, the suspended front axles occupy too much space in the front, resulting in unreasonable arrangement.
A rocker arm mid-mounted tractor non-independent suspension front drive axle is designed. By hinging the front axle and the rocker arm, and using sensors to detect the swing angle of the rocker arm and the front axle, combined with the suspension cylinder and control mechanism, the front axle suspension function is realized, reducing the volume occupied by assembly between components.
It effectively saves the front space of the tractor, optimizes the layout and quality distribution of the whole machine, so that tractors with the same horsepower section can match larger specifications of equipment, improving the performance and market competitiveness of the whole machine.
Smart Images
Figure CN222946496U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tractor equipment, in particular to a non-independent suspended front drive axle of a mid-mounted rocker arm tractor. Background Art
[0002] With the increasing market demand for multi-functional tractors, more and more tractors have added front loading, front PTO, front lifting and other configurations. However, the increase of the above configurations will inevitably lead to an increase in the overall size of the tractor and reduce the flexibility of tractor operation, especially for tractors with non-independent suspended front axles. Because the front space occupied by the suspended front axle itself is too large, the front loading, front PTO and front lifting can only be arranged further forward, which results in the overall size of the machine being too large, and the impact on operational flexibility is particularly prominent.
[0003] Therefore, how to save the front space of the whole tractor and improve the rationality of the overall layout and the flexibility of operation through a reasonable suspended front axle structure design on the tractor is a problem that tractor manufacturers need to solve. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a non-independent suspended front drive axle of a rocker arm mid-mounted tractor to solve the above-mentioned problem.
[0005] The utility model solves the above-mentioned technical problem with a technical solution as follows: a non-independent suspended front drive axle of a mid-mounted rocker arm tractor, comprising: a front axle, a rocker arm, a suspension oil cylinder, a bracket, two side plates, two connecting frames, a sensor, an accumulator and a control mechanism; the front axle is arranged in front of the rocker arm and is hinged to the rocker arm, the bottom end of the connecting frame is hinged to an end of the rocker arm away from the front axle, the top end of the connecting frame is fixedly connected to the side plate, the bracket is arranged above the front axle, the upper and lower ends of the suspension oil cylinder are respectively hinged to the bracket and the rocker arm, the bracket and the side plate are fixedly connected at one end close to each other, the upper and lower ends of the sensor are respectively connected to the bracket and the rocker arm, the accumulator is installed at the bottom end of the bracket and is connected to the suspension oil cylinder through a pipeline, and the control mechanism is connected to the sensor.
[0006] The beneficial effects of the utility model are as follows: the utility model articulates the front axle and the rocker arm, uses sensors to detect the swing angles of the front axle and the rocker arm, and cooperates with the suspension cylinder and the control mechanism, which is conducive to realizing the front axle suspension function while making the volume occupied by the assembly between the various components smaller, avoiding the front space of the tractor to the greatest extent, and is used for the design and assembly of front loading, front PTO, and front lifting, reducing the size of the entire machine, optimizing the overall layout of the tractor, optimizing the overall mass distribution of the machine, so that tractors of the same horsepower range can match larger-sized implements, thereby improving the overall performance and market competitiveness of the tractor.
[0007] On the basis of the above technical solution, the present invention can also be improved as follows.
[0008] Furthermore, the rear end of the front axle passes through the rocker arm and is hinged to the rocker arm via a flange rotating shaft.
[0009] The beneficial effect of adopting the above further solution is that the flange shaft is conducive to forming an articulated relationship between the front axle and the rocker arm, so that the rocker arm can rotate relatively within a certain range during the working bumps of the front axle, thereby adapting to different terrains.
[0010] Furthermore, a flange is provided at the end of the front axle passing through the rocker arm, and the flange is connected to the four-wheel drive input shaft on the tractor chassis.
[0011] The beneficial effect of adopting the above further solution is that the connection between the flange and the four-wheel drive input shaft on the tractor chassis is conducive to transmitting power to the front axle, thereby driving the wheels on the front axle to rotate.
[0012] Furthermore, the rocker arm is a U-shaped structure with its opening direction arranged backwards.
[0013] The beneficial effect of adopting the above further solution is that it is conducive to reducing the space occupied while achieving the rocker arm limit and transmission, thereby reducing the volume occupied by the entire suspended front drive axle after assembly.
[0014] Furthermore, two first swing stops and two second swing stops are respectively provided at one end where the front axle and the rocker arm are close to each other, and the two second swing stops are respectively provided on both sides of the front end portion of the rocker arm, and are respectively provided below the two first swing stops, and when the front axle and the rocker arm are rotated to a certain angle relative to each other, the first swing stop and the second swing stop abut against each other.
[0015] The beneficial effect of adopting the above further scheme is that the front axle and the rocker arm are limited by the first rocking block and the second rocking block, which is different from the upper or lower limit of the existing front axle central shell, thereby reducing the volume of the front axle shell and increasing the layout space for the engine power output to the front.
[0016] Furthermore, two swing limit blocks are respectively arranged on both sides of the top of the front end of the rocker arm. When the rocker arm moves upward to a certain distance along with the front axle, the swing limit blocks abut against the tractor chassis.
[0017] The beneficial effect of adopting the above further scheme is that the swing limit blocks are set on both sides of the top of the front end of the rocker arm. On the one hand, it is conducive to the limitation of the rocker arm and the chassis to prevent the rocker arm from interfering with the chassis due to the excessive rise of the front axle. On the other hand, it does not occupy the space in front of the front axle.
[0018] Furthermore, both sides of the rear end of the rocker arm are hinged to the bottom ends of the two connecting frames through two first pins, and the top ends of the two connecting frames are fixedly connected to the two side plates.
[0019] The beneficial effect of adopting the above further solution is that when the rocker arm rises and falls with the front axle, the power is transmitted to the side plate of the chassis through the connecting frame, thereby pushing the chassis to rise and fall with the front axle.
[0020] Furthermore, the bottom end of the suspension oil cylinder is hinged to the front end of the rocker arm through a third pin shaft, and the top end is hinged to the bracket through a second pin shaft.
[0021] The beneficial effect of adopting the above further scheme is that the suspension cylinder is respectively hinged to the rocker arm and the bracket, which is conducive to adjusting the distance between the rocker arm and the bracket by compressing or extending the suspension cylinder, thereby realizing the suspension drive function of the tractor front axle.
[0022] Furthermore, a hydraulic valve group is provided on the pipeline connecting the accumulator and the suspension cylinder, and the hydraulic valve group is connected to the control mechanism.
[0023] 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 sensor, and then control the opening and closing of the hydraulic valve group to achieve compression or extension of the suspension cylinder.
[0024] Furthermore, both ends of the front axle are connected to the wheels via bolts.
[0025] The beneficial effect of adopting the above further solution is that the wheels are displaced on different terrains, which helps to make the front axle rise and fall with the terrain. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 The overall structural diagram provided for the embodiment of the utility model;
[0027] Figure 2 Schematic diagram of the connection between the front axle, rocker arm and suspension cylinder provided in the embodiment of the utility model Figure 1 ;
[0028] Figure 3 Schematic diagram of the connection between the front axle, rocker arm and suspension cylinder provided in the embodiment of the utility model Figure 2 .
[0029] in, Figure 1 The double-headed arrows in the figure indicate the installation positions of the components.
[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0031] 1. Front axle; 2. Rocker arm; 3. Suspension cylinder; 4. Bracket; 5. Side plate; 6. Connecting frame; 7. Sensor; 8. Accumulator; 9. Swing limit block; 10. Flange shaft; 11. Flange plate; 12. First pin shaft; 13. First swing stop block; 14. Second swing stop block; 15. Second pin shaft; 16. Third pin shaft. DETAILED DESCRIPTION
[0032] 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.
[0033] like Figures 1 to 3 As shown, a non-independent suspended front drive axle of a rocker arm mid-mounted tractor comprises: a front axle 1, a rocker arm 2, a suspension cylinder 3, a bracket 4, two side plates 5, two connecting frames 6, a sensor 7, an accumulator 8 and a control mechanism; the front axle 1 is arranged in front of the rocker arm 2 and is hinged to the rocker arm 2, the bottom end of the connecting frame 6 is hinged to the end of the rocker arm 2 away from the front axle 1, the top end of the connecting frame 6 is fixedly connected to the side plate 5, the bracket 4 is arranged above the front axle 1, the upper and lower ends of the suspension cylinder 3 are respectively hinged to the bracket 4 and the rocker arm 2, the bracket 4 and the side plate 5 are fixedly connected at one end close to each other, the upper and lower ends of the sensor 7 are respectively connected to the bracket 4 and the rocker arm 2, the accumulator 8 is installed at the bottom end of the bracket 4 and is connected to the suspension cylinder 3 through a pipeline, and the control mechanism is connected to the sensor 7.
[0034] 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 7 and the control of the suspension cylinder 3 are both existing technologies.
[0035] The beneficial effects of the utility model are as follows: the utility model articulates the front axle and the rocker arm, uses sensors to detect the swing angles of the front axle and the rocker arm, and cooperates with the suspension cylinder and the control mechanism, which is conducive to realizing the front axle suspension function while making the volume occupied by the assembly between the various components smaller, avoiding the front space of the tractor to the greatest extent, and is used for the design and assembly of front loading, front PTO, and front lifting, reducing the size of the entire machine, optimizing the overall layout of the tractor, optimizing the overall mass distribution of the machine, so that tractors of the same horsepower range can match larger-sized implements, thereby improving the overall performance and market competitiveness of the tractor.
[0036] Preferably, Figure 2 and Figure 3 As shown, the rear end of the front axle 1 passes through the rocker arm 2 and is hinged to the rocker arm 2 via a flange shaft 10 .
[0037] The beneficial effect of adopting the above preferred solution is that the flange shaft is conducive to forming an articulated relationship between the front axle and the rocker arm, so that the rocker arm can rotate relatively within a certain range during the working bumps of the front axle, thereby adapting to different terrains.
[0038] Preferably, Figure 2 and Figure 3 As shown, the front axle 1 is provided with a flange 11 at the end portion passing through the rocker arm 2, and the flange 11 is connected to the four-wheel drive input shaft on the tractor chassis.
[0039] The beneficial effect of adopting the above preferred solution is that the connection between the flange and the four-wheel drive input shaft on the tractor chassis is conducive to transmitting power to the front axle, thereby driving the wheels on the front axle to rotate.
[0040] Preferably, Figure 2 and Figure 3 As shown, the rocker arm 2 is a U-shaped structure with its opening direction facing backwards.
[0041] The beneficial effect of adopting the above-mentioned preferred solution is that it is conducive to reducing the space occupied while achieving the rocker arm limit and transmission, thereby reducing the volume occupied by the entire suspended front drive axle after assembly.
[0042] Preferably, Figure 3 As shown, two first swing blocks 13 and two second swing blocks 14 are respectively provided at one end where the front axle 1 and the rocker arm 2 are close to each other. The two second swing blocks 14 are respectively provided on both sides of the front end of the rocker arm 2 and are respectively provided below the two first swing blocks 13. When the front axle 1 and the rocker arm 2 rotate to a certain angle relative to each other, the first swing block 13 and the second swing block 14 abut against each other.
[0043] The beneficial effect of adopting the above-mentioned preferred scheme is that the front axle and the rocker arm are limited by the swinging of the first swing block and the second swing block, which is different from the existing upper or lower limit of the central shell of the front axle, thereby reducing the volume of the axle shell of the front axle and increasing the layout space for the engine power output to the front.
[0044] Preferably, Figures 1 to 3 As shown, two swing limit blocks 9 are respectively arranged on both sides of the top of the front end of the rocker arm 2. When the rocker arm 2 moves upward to a certain distance along with the front axle 1, the swing limit blocks 9 abut against the tractor chassis.
[0045] The beneficial effect of adopting the above-mentioned preferred scheme is that the swing limit blocks are set on both sides of the top of the front end of the rocker arm. On the one hand, it is conducive to the limitation of the rocker arm and the chassis to prevent the rocker arm from interfering with the chassis due to the excessive rise of the front axle, and on the other hand, it does not occupy the space in front of the front axle.
[0046] Preferably, Figures 1 to 3 As shown, both sides of the rear end of the rocker arm 2 are hinged to the bottom ends of the two connecting frames 6 through two first pins 12, and the top ends of the two connecting frames 6 are fixedly connected to the two side panels 5.
[0047] The beneficial effect of adopting the above preferred solution is that when the rocker arm rises and falls with the front axle, the power is transmitted to the side plate of the chassis through the connecting frame, thereby pushing the chassis to rise and fall with the front axle.
[0048] Preferably, Figures 1 to 3 As shown, the bottom end of the suspension cylinder 3 is hinged to the front end of the rocker arm 2 through a third pin shaft 16 , and the top end is hinged to the bracket 4 through a second pin shaft 15 .
[0049] The beneficial effect of adopting the above preferred solution is that the suspension cylinder is hinged to the rocker arm and the bracket respectively, which is conducive to adjusting the distance between the rocker arm and the bracket by compressing or extending the suspension cylinder, thereby realizing the suspension drive function of the tractor front axle.
[0050] Preferably, a hydraulic valve group is provided on the pipeline connecting the accumulator 8 and the suspension cylinder 3, and the hydraulic valve group is connected to the control mechanism.
[0051] 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 the control mechanism to judge the position change between the rocker arm and the bracket through the signal transmitted by the sensor, and then control the opening and closing of the hydraulic valve group to achieve compression or extension of the suspension cylinder.
[0052] Preferably, both ends of the front axle 1 are connected to the wheels via bolts.
[0053] The beneficial effect of adopting the above preferred solution is that the wheels are displaced on different terrains, which is conducive to making the front axle rise and fall with the terrain.
[0054] The working process and functions of the utility model are introduced below:
[0055] When the tractor is driving, the tire moves in the vertical direction according to the changes in the ground, driving the rocker arm 2 to move up and down in the vertical direction. When the sensor 7 detects the position change between the rocker arm 2 and the bracket 4, the position change is converted into an electrical signal and transmitted to the control mechanism; the control mechanism controls the opening and closing of the hydraulic valve group according to the position change between the rocker arm 2 and the bracket 4, and injects or releases hydraulic oil into the cavities on both sides of the suspension cylinder 3, thereby controlling the compression or extension of the suspension cylinder 3, so that the rocker arm 2 and the bracket 4 are in a suitable relative position, thereby realizing the suspension function of the tractor drive axle.
[0056] In the technical solution of the utility model, the front axle 1 has two directions of movement: one is the rotational movement with the vehicle forward direction as the axis, which is limited by the first swing block 13 and the second swing block 14; the other is the swinging movement with the first pin 12 as the axis. The compression position of the rocker arm 2 is limited by the swing limit block 9, and the extension position is limited by the damper inside the suspension cylinder 3.
[0057] 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.
[0058] 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.
[0059] 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.
[0060] 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.
[0061] 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.
[0062] 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 non-independent suspension front drive axle of a rocker arm mid-mounted tractor, characterized in that: include: A front axle (1), a rocker arm (2), a suspension cylinder (3), a bracket (4), two side plates (5), two connecting frames (6), a sensor (7), an accumulator (8) and a control mechanism; the front axle (1) is arranged in front of the rocker arm (2) and is hinged to the rocker arm (2); the bottom end of the connecting frame (6) is hinged to an end of the rocker arm (2) away from the front axle (1); the top end of the connecting frame (6) is fixedly connected to the side plate (5); the bracket (4) is arranged Above the front axle (1), the upper and lower ends of the suspension cylinder (3) are respectively hinged to the bracket (4) and the rocker arm (2); the bracket (4) and the side plate (5) are fixedly connected at one end close to each other; the upper and lower ends of the sensor (7) are respectively connected to the bracket (4) and the rocker arm (2); the accumulator (8) is installed at the bottom end of the bracket (4) and connected to the suspension cylinder (3) through a pipeline; and the control mechanism is connected to the sensor (7).
2. According to claim 1, a non-independent suspension front drive axle of a mid-mounted rocker arm tractor, characterized in that: The rear end of the front axle (1) passes through the rocker arm (2) and is hinged to the rocker arm (2) via a flange rotating shaft (10).
3. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 1, characterized in that: The end of the front axle (1) passing through the rocker arm (2) is provided with a flange (11), and the flange (11) is connected to the four-wheel drive input shaft on the tractor chassis.
4. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 1, characterized in that: The rocker arm (2) is a U-shaped structure with its opening direction arranged backwards.
5. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 4, characterized in that: Two first swing blocks (13) and two second swing blocks (14) are respectively arranged at the ends of the front axle (1) and the rocker arm (2) that are close to each other. The two second swing blocks (14) are respectively arranged on both sides of the front end of the rocker arm (2) and are respectively arranged below the two first swing blocks (13). When the front axle (1) and the rocker arm (2) rotate relative to each other to a certain angle, the first swing block (13) and the second swing block (14) abut against each other.
6. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 4, characterized in that: Two swing limit blocks (9) are respectively arranged on both sides of the top of the front end of the rocker arm (2); when the rocker arm (2) moves upward to a certain distance along with the front axle (1), the swing limit blocks (9) abut against the tractor chassis.
7. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 4, characterized in that: The two sides of the rear end of the rocker arm (2) are respectively hinged to the bottom ends of the two connecting frames (6) through two first pins (12), and the top ends of the two connecting frames (6) are respectively fixedly connected to the two side plates (5).
8. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 4, characterized in that: The bottom end of the suspension oil cylinder (3) is hinged to the front end of the rocker arm (2) through a third pin shaft (16), and the top end is hinged to the bracket (4) through a second pin shaft (15).
9. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 1, characterized in that: A hydraulic valve group is provided on the pipeline connecting the accumulator (8) and the suspension oil cylinder (3), and the hydraulic valve group is connected to the control mechanism.
10. The non-independent suspension front drive axle of a mid-mounted rocker arm tractor according to claim 1, characterized in that: Both ends of the front axle (1) are connected to wheels via bolts respectively.