Small agricultural machine walking mechanism and small agricultural machine
By optimizing the layout and weight distribution of the power plant in the small agricultural machinery walking mechanism, the stability and safety problems of existing small agricultural machinery are solved, and higher stability and handling are achieved.
Patent Information
- Application Number
- CN202421743604.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The crawler-type walking mechanism of existing small agricultural machinery has reduced stability due to the center of gravity offset and uneven weight distribution of the power plant, which increases the risk of overturning and rolling, affecting operating efficiency and safety.
A small agricultural machinery walking mechanism is designed, wherein the power device is located on one side of the first pulley near the second pulley, and the straight line distance from the center of the first pulley to the center of the second pulley is greater than the straight line distance from the center of the first pulley to the center of the third pulley. Through this layout, the support range of the walking mechanism is expanded, and the weight distribution on the left and right sides is balanced through the seat and the counterweight component.
It effectively reduces the problem of center of gravity shift in front and rear direction of small agricultural machinery, improves stability and handling, reduces the risk of rollover and overturning, and improves the safety and efficiency of operations.
Smart Images
Figure CN222780497U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural machinery, in particular to a small agricultural machinery traveling mechanism and a small agricultural machinery. Background Art
[0002] With the development of agricultural modernization, various time-saving, labor-saving and efficient agricultural machinery and equipment have gradually replaced traditional manual labor and are applied to all aspects of agricultural production. Among various agricultural machinery, small agricultural machinery is widely used in family farms, mountainous areas, terraces and various small-scale cultivated land planting operations due to its advantages of high flexibility, strong adaptability and relatively low cost.
[0003] As one of the core components of small agricultural machinery, the performance of the traveling mechanism will directly affect the operating efficiency, stability and safety of small agricultural machinery. At present, most small agricultural machinery on the market usually adopts crawler traveling mechanism in order to adapt to various rugged grounds in cultivated land. However, the crawler traveling mechanism of existing small agricultural machinery still has some shortcomings in actual use.
[0004] First, in the design of existing crawler-type walking mechanisms, the walking mechanisms are usually designed as isosceles triangle structures, and the power device of small agricultural machinery is usually arranged on the top of the walking mechanism. This layout directly leads to a higher overall center of gravity of the small agricultural machinery. In addition, since the power device is large in size, and the walking mechanism is usually small in size to meet the requirements of the use environment, the center of gravity of the power device is usually located on the outside of the walking mechanism in the front and rear directions of the small agricultural machinery. As a result, during the operation of the small agricultural machinery, especially when moving on rugged or inclined terrain, the stability of the agricultural machinery is significantly reduced, which not only increases the risk of overturning of the agricultural machinery, but also limits the operation ability of the agricultural machinery in complex farmland environments;
[0005] Secondly, compared with large agricultural machinery, in order to improve its flexibility and adaptability, the weight of the frame, working device and traveling device of small agricultural machinery is generally smaller. However, as the power source of small agricultural machinery, the weight of the power device is often relatively large. At the same time, due to the limitation of installation space, the power device of small agricultural machinery is often biased to the left or right side of the traveling mechanism, which causes the imbalance of the weight distribution of small agricultural machinery in the left and right directions, further reducing the stability of small agricultural machinery in operation and increasing the risk of small agricultural machinery rolling over during operation.
[0006] Finally, the problem of center of gravity offset of small agricultural machinery not only affects its stability, but also reduces its handling performance, requiring operators to spend more energy to maintain the balance and stability of the agricultural machinery when operating small agricultural machinery. This undoubtedly increases their labor intensity. At the same time, it also reduces the operating efficiency of small agricultural machinery and has an adverse impact on agricultural production. Utility Model Content
[0007] The utility model aims at the deficiencies of the prior art and provides a small agricultural machinery traveling mechanism with high stability and good maneuverability.
[0008] The utility model is implemented through the following technical scheme, and provides a small agricultural machinery walking mechanism, including a frame and a power device connected to the frame, and also including a transmission shaft, a first mounting component, a first pulley, a second pulley, and a third pulley. The transmission shaft and the first mounting component are respectively connected to the frame, the first pulley is fixed to the transmission shaft or rotatably connected to the first mounting component, the second pulley and the third pulley are respectively rotatably connected to the first mounting component, the power device is located on the side of the first pulley close to the second pulley, and the straight-line distance from the center of the first pulley to the center of the second pulley is greater than the straight-line distance from the center of the first pulley to the center of the third pulley.
[0009] Compared with the prior art, the beneficial effect of the utility model lies in that: since the power unit is located on the side of the first pulley close to the second pulley, the straight-line distance from the center of the first pulley to the center of the second pulley is greater than the straight-line distance from the center of the first pulley to the center of the third pulley, and thus the support range of the walking mechanism is expanded in the front-to-back direction of the small agricultural machinery, which can reduce the impact of the center of gravity offset of the power unit on the small agricultural machinery in the front-to-back direction of the small agricultural machinery, improve the stability of the small agricultural machinery, reduce the risk of the agricultural machinery tipping over or overturning, and improve the safety of the small agricultural machinery.
[0010] Preferably, the horizontal distance from the center of gravity of the power device to the center of the first pulley is smaller than the horizontal distance from the center of the second pulley to the center of the first pulley.
[0011] Preferably, the height of the center of gravity of the power device is smaller than the height of the center of the first pulley.
[0012] The beneficial effect of adopting the above-mentioned preferred technical solution is that: since the horizontal distance from the center of gravity of the power device to the center of the first pulley is smaller than the horizontal distance from the center of the second pulley to the center of the first pulley, and the height of the center of gravity of the power device is smaller than the height of the center of the first pulley, compared with the prior art, the problem of center of gravity offset of the power device in the front and rear directions of the small agricultural machinery is solved, and at the same time, the height of the center of gravity of the power device of the small agricultural machinery is reduced, further improving the stability and controllability of the small agricultural machinery.
[0013] Preferably, the first mounting components are symmetrically arranged on the left and right sides of the rack.
[0014] Preferably, it further comprises a seat and a counterweight component, wherein the seat and the counterweight component are both connected to the frame. In the left-right direction, the power device is located on one side of the frame, and the seat and the counterweight component are both located on the other side of the frame.
[0015] The beneficial effect of adopting the above-mentioned preferred technical solution is that: through the seat and the counterweight component, the weight distribution on the left and right sides of the small agricultural machinery can be effectively balanced, so that the weight distribution on the left and right sides of the small agricultural machinery remains balanced, thereby avoiding the overall center of gravity of the small agricultural machinery from being biased to the left or right, thereby improving the stability of the small agricultural machinery.
[0016] Preferably, it also includes a crawler track, which is arranged around the first pulley, the second pulley and the third pulley.
[0017] Preferably, it further comprises a fourth pulley, wherein the fourth pulley is rotatably connected to the first mounting component and the fourth pulley is in close contact with the track.
[0018] The beneficial effect of adopting the above-mentioned preferred technical solution is that: the fourth pulley can support the suspended crawler track and prevent the crawler track from sagging due to its excessive length.
[0019] Preferably, the first mounting component is provided with a long groove and a tensioning device, the axle of the second pulley and / or the axle of the third pulley is slidingly connected with the long groove of the first mounting component, and the tensioning device is connected with the axle of the second pulley and / or the axle of the third pulley.
[0020] Preferably, the tensioning device includes a second mounting component, a third mounting component, and a first connecting component, the second mounting component is connected to the first mounting component, the third mounting component is connected to the axle of the second pulley and / or the axle of the third pulley, the first connecting component is threadedly or slidably connected to the second mounting component, and one end of the first connecting component is connected to the third mounting component.
[0021] The beneficial effect of adopting the above preferred technical solution is that: through the tensioning device, the position of the second pulley and / or the third pulley can be adjusted, and then the tightness of the track can be adjusted to avoid falling off or abnormal wear caused by the track being too loose or too tight.
[0022] The utility model also provides a small agricultural machine, comprising any one of the above-mentioned small agricultural machine traveling mechanisms.
[0023] Compared with the prior art, the beneficial effects of the utility model are as follows: by applying the above-mentioned small agricultural machinery walking mechanism, the problem of the offset of the overall center of gravity of the small agricultural machinery is reduced, and at the same time, the overall center of gravity of the small agricultural machinery is lowered, thereby improving the overall stability and controllability of the small agricultural machinery. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of the utility model;
[0025] Figure 2It is a front view of the utility model.
[0026] As shown in the figure:
[0027] 1. Frame, 2. Power unit, 3. Transmission shaft, 4. First mounting component, 5. First pulley, 6. Second pulley, 7. Third pulley, 8. Fourth pulley, 9. Track; 1001. Second mounting component, 1002. Third mounting component, 1003. First connecting component, 1004. First fixing component, 1005. Second fixing component. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] Embodiment 1:
[0030] like Figure 1-2 The small agricultural machinery travel mechanism shown includes a frame 1, and first mounting components 4 are respectively connected to the left and right sides of the frame 1. The first mounting components 4 are symmetrically arranged on the left and right sides of the frame 1, with the front and rear direction of the small agricultural machinery as the longitudinal direction and the left and right direction as the transverse direction. A transmission shaft 3 is horizontally arranged on the top of the frame 1, and the transmission shaft 3 is connected to the transmission device 3 of the small agricultural machinery.
[0031] The power device 2 and the transmission device 3 of the small agricultural machinery are respectively connected to the frame 1. The power device 2 is connected to the transmission shaft 3 through the transmission device 3. The transmission device 3 is located at the laterally centered position of the first mounting component 4 on the left and right sides of the frame 1. The power device 2 is located near the first mounting component 4 on the left side of the frame 1. A seat and a counterweight component are provided near the first mounting component 4 on the right side of the frame 1. In this embodiment, the counterweight component is a battery. When the small agricultural machinery is working, the operator sits on the seat to drive the small agricultural machinery. At this time, the weight of the power device on the left side of the frame 1 can be balanced by the weight of the operator on the right side of the frame 1 and the weight of the counterweight component, so that the weight distribution of the small agricultural machinery in the left and right directions can be kept balanced.
[0032] A first pulley 5 is provided at both ends of the transmission shaft 3, and the first pulley 5 is fixedly connected to the transmission shaft 3, or the first pulley 5 is rotationally connected to the first mounting component 4. When the first pulley 5 is rotationally connected to the first mounting component 4, the first pulley 5 is transmission-connected to the transmission shaft 3.
[0033] The bottom of the first mounting member 4 is rotatably connected to a second pulley 6 and a third pulley 7, respectively. The axes of the first pulley 5, the second pulley 6 and the third pulley 7 are parallel to each other. Figure 2 As shown, the first pulley 5, the second pulley 6 and the third pulley 7 are arranged in a triangular structure, the height of the first pulley 5 is higher than the heights of the second pulley 6 and the third pulley 7, the second pulley 6 is located on the rear side of the first pulley 5, the third pulley 7 is located on the front side of the first pulley 5, and the straight-line distance from the center of the first pulley 5 to the center of the second pulley 6 is greater than the straight-line distance from the center of the first pulley 5 to the center of the third pulley 7.
[0034] The small agricultural machinery traveling mechanism further comprises a crawler track 9 , which surrounds a first pulley 5 , a second pulley 6 , and a third pulley 7 .
[0035] The power device 2 and the transmission device 3 of the small agricultural machinery are both located on the rear side of the first pulley 5 of the walking mechanism. The horizontal distance from the center of gravity of the power device 2 and the center of gravity of the transmission device 3 to the axis of the first pulley 5 is smaller than the horizontal distance from the axis of the second pulley 6 to the axis of the first pulley 5.
[0036] The heights of the center of gravity of the power device 2 and the center of gravity of the transmission device 3 of the small agricultural machine are both smaller than the height of the axis of the first pulley 5 .
[0037] The first mounting component 4 is rotatably connected to a fourth pulley 8 , which is in close contact with the inner surface of the crawler belt 9 , thereby supporting and tightening the crawler belt 9 .
[0038] Long grooves for the axle of the third pulley 7 to pass through are respectively horizontally arranged on the side plates on the left and right sides of the first mounting component 4, and both ends of the axle of the third pulley 7 are located on the outside of the first mounting component 4. Tensioning devices are respectively connected to the side plates on the left and right sides of the first mounting component 4, and the tensioning device comprises a second mounting component 1001, a first connecting component 1003, and a third mounting component 1002. The second mounting component 1001 is fixedly connected to the side plate of the first mounting component 4, and the third mounting component 1002 is clamped on the axle of the third pulley 7. The first connecting component 1003 is threadedly connected or slidably connected to the second mounting component 1001. In the present embodiment, preferably, the first connecting component 1003 is threadedly connected to the second mounting component 1001, and the first connecting component 1003 is rotatably connected to the third mounting component 1002. The first connecting component 1003 is fixed to the second mounting component 1001 by the first fixing component 1004, and the third mounting component 1002 is fixed to the axle of the third pulley 7 by the second fixing component 1005.
[0039] The present embodiment also provides a small agricultural machinery using the above-mentioned small agricultural machinery traveling mechanism. During the operation of the small agricultural machinery, the small agricultural machinery traveling mechanism is used to reduce the problem of the deviation of the overall center of gravity of the small agricultural machinery, and at the same time, the overall center of gravity of the small agricultural machinery is also lowered, thereby improving the overall stability and controllability of the small agricultural machinery.
[0040] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.
Claims
1. A small agricultural machinery travel mechanism, comprising a frame (1) and a power device (2) connected to the frame (1), characterized in that: The invention also comprises a transmission shaft (3), a first mounting component (4), a first pulley (5), a second pulley (6), and a third pulley (7); the transmission shaft (3) and the first mounting component (4) are respectively connected to the frame (1); the first pulley (5) is fixedly connected to the transmission shaft (3) or is rotationally connected to the first mounting component (4); the second pulley (6) and the third pulley (7) are respectively rotationally connected to the first mounting component (4); the power device (2) is located on a side of the first pulley (5) close to the second pulley (6); the straight-line distance from the center of the first pulley (5) to the center of the second pulley (6) is greater than the straight-line distance from the center of the first pulley (5) to the center of the third pulley (7).
2. A small agricultural machinery travel mechanism according to claim 1, characterized in that: The horizontal distance from the center of gravity of the power device (2) to the center of the first pulley (5) is smaller than the horizontal distance from the center of the second pulley (6) to the center of the first pulley (5).
3. A small agricultural machinery travel mechanism according to claim 1, characterized in that: The height of the center of gravity of the power device (2) is smaller than the height of the center of the first pulley (5).
4. A small agricultural machinery travel mechanism according to claim 1, characterized in that: The first mounting component (4) is symmetrically arranged on the left and right sides of the frame (1).
5. The small agricultural machinery travel mechanism according to claim 1, characterized in that: It also comprises a seat and a counterweight component, wherein the seat and the counterweight component are both connected to the frame (1); in the left-right direction, the power device (2) is located on one side of the frame (1), and the seat and the counterweight component are both located on the other side of the frame (1).
6. A small agricultural machinery travel mechanism according to claim 1, characterized in that: It also comprises a crawler belt (9), wherein the crawler belt (9) is sleeved around the first pulley (5), the second pulley (6), and the third pulley (7).
7. A small agricultural machinery travel mechanism according to claim 6, characterized in that: It also includes a fourth pulley (8), which is rotatably connected to the first mounting component (4), and the fourth pulley (8) is tightly fitted to the crawler track (9).
8. The small agricultural machinery travel mechanism according to claim 1, characterized in that: The first mounting component (4) is provided with a long groove and a tensioning device; the axle of the second pulley (6) and / or the axle of the third pulley (7) are slidably connected to the long groove of the first mounting component (4); and the tensioning device is connected to the axle of the second pulley (6) and / or the axle of the third pulley (7).
9. A small agricultural machinery travel mechanism according to claim 8, characterized in that: The tensioning device comprises a second mounting component (1001), a third mounting component (1002), and a first connecting component (1003); the second mounting component (1001) is connected to the first mounting component (4); the third mounting component (1002) is connected to the axle of the second pulley (6) and / or the axle of the third pulley (7); the first connecting component (1003) is threadedly or slidably connected to the second mounting component (1001); and one end of the first connecting component (1003) is connected to the third mounting component (1002).
10. A small agricultural machine, characterized in that: The small agricultural machinery travel mechanism comprises the travel mechanism of any one of claims 1 to 9.