Bridge conveyor device for agricultural machinery and agricultural machinery
By installing vibration-absorbing plate components on the bridge conveying device of agricultural machinery, local stiffness is enhanced, and the problem of high vibration noise in the bridge conveying device is solved, and the effect of reducing vibration noise and improving driving experience is achieved.
Patent Information
- Application Number
- CN202421565660.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-03
AI Technical Summary
When agricultural machinery is operating in the fields, due to the high vibration noise of the bridge conveyor device, it affects the driving experience, and the existing noise reduction optimization technology is complex and costly.
A vibration-absorbing rib plate assembly is provided on the width direction of the bridge conveyor body, and the local stiffness is enhanced by the vibration-absorbing rib plate assembly, vibration is suppressed and vibration noise is reduced.
It effectively reduces the vibration noise of the bridge conveyor device, improves the driving experience of agricultural machinery drivers, and reduces the complexity and cost of the overall structure.
Smart Images
Figure CN222736695U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of agricultural machinery, and in particular relates to a bridge conveying device for agricultural machinery and the agricultural machinery. Background Art
[0002] When an agricultural harvester is harvesting in the field, there are many reciprocating and rotary parts, so the excitation source is complex. At the same time, most of the parts are rigidly connected, so most agricultural machinery has problems of large vibration and strong noise during operation. Through testing and troubleshooting of the vibration and noise of various parts of the whole machine, it is found that the bridge conveyor device contributes a lot to the sound pressure in the cab, and the radiation noise of the bridge conveyor device will have an important impact on the noise of the whole machine.
[0003] At present, the technical means for optimizing the noise reduction of the bridge conveyor are generally divided into the following methods: 1. Optimizing the excitation source inside the bridge conveyor; 2. Optimizing the propagation path of the vibration noise. Both of the above methods require relatively complex improvements to the bridge conveyor, and the debugging and manufacturing costs are high, which is not easy to implement. Utility Model Content
[0004] The utility model aims to provide a bridge conveying device for agricultural machinery and the agricultural machinery, so as to reduce the vibration noise of the bridge conveying device.
[0005] In order to achieve the above-mentioned object, the utility model provides a bridge conveying device for agricultural machinery on one hand, and the bridge conveying device comprises:
[0006] Bridge conveying device body;
[0007] The vibration-damping rib assembly is arranged on a vertical side wall on one side of the width direction of the bridge conveying device body, and is used to reduce the vibration noise emitted by the bridge conveying device body to the outside world.
[0008] In some embodiments, the vibration-damping rib plate assembly includes a plurality of vibration-damping rib plates, and two adjacent vibration-damping rib plates are distributed at an angle.
[0009] In some embodiments, two axial ends of the vibration-damping rib plate extend to the top end of the bridge conveying device body and the bottom end of the bridge conveying device body, respectively.
[0010] In some embodiments, the cross section of the vibration-damping rib is L-shaped.
[0011] In some embodiments, the vibration-damping rib is provided with an avoidance groove for avoiding external components.
[0012] In some embodiments, there are multiple vibration damping rib plate assemblies, and the multiple vibration damping rib plate assemblies include a first vibration damping rib plate assembly and a second vibration damping rib plate assembly. The first vibration damping rib plate assembly and the second vibration damping rib plate assembly are respectively arranged on the vertical side walls on both sides of the width direction of the bridge conveying device body.
[0013] In some embodiments, the vibration-damping rib assembly is welded to a vertical side wall on one side in the width direction of the bridge conveying device body.
[0014] In some embodiments, the vibration-damping rib assembly is integrally formed with a vertical side wall on one side in the width direction of the bridge conveying device body.
[0015] In some embodiments, a sound absorbing member for absorbing vibration noise is provided on the bridge conveying device body.
[0016] A second aspect of the utility model provides an agricultural machine, comprising the above-mentioned bridge conveying device for agricultural machinery.
[0017] In the above technical solution, the bridge conveyor device includes: a bridge conveyor device body; a vibration-damping rib plate assembly, which is arranged on a vertical side wall on one side of the width direction of the bridge conveyor device body, and is used to reduce the vibration noise emitted by the bridge conveyor device body to the outside. The bridge conveyor device body in the bridge conveyor device provided by the utility model is provided with a vibration-damping rib plate assembly on one side of the width direction, and the vibration-damping rib plate assembly can enhance the rigidity of the bridge conveyor device body to reduce the vibration caused by its own work and reduce the vibration noise emitted to the outside due to the vibration.
[0018] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:
[0020] Figure 1 It is a structural schematic diagram of a bridge conveying device for agricultural machinery provided according to an embodiment of the utility model;
[0021] Figure 2 It is a front view schematic diagram of a bridge conveying device for agricultural machinery provided according to an embodiment of the utility model.
[0022] Description of Reference Numerals
[0023] 1Vibration damping rib assembly 2Bridge conveyor body DETAILED DESCRIPTION
[0024] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.
[0025] The following describes the bridge conveying device for agricultural machinery according to the utility model with reference to the accompanying drawings. Figure 1 As shown, it is a structural schematic diagram of a bridge conveying device for agricultural machinery provided according to an embodiment of the utility model; Figure 2 , which is a front view schematic diagram of a bridge conveying device for agricultural machinery provided according to an embodiment of the utility model. The bridge conveying device for agricultural machinery provided by the embodiment of the utility model comprises:
[0026] Bridge conveying device body 2;
[0027] The vibration-damping rib assembly 1 is arranged on a vertical side wall on one side of the width direction of the bridge conveying device body 2, and is used to reduce the vibration noise emitted by the bridge conveying device body 2 to the outside.
[0028] The bridge conveyor body 2 includes a bridge conveyor component inside, which can transport crops from one end to the other. For example, the bridge conveyor mechanism of a wheat harvester evenly and continuously transports the grains harvested by the harvesting table to the threshing drum, so that the threshing drum can perform threshing smoothly. The bridge conveyor body 2 will produce large vibrations due to the force during operation, and the vibration will bring about large vibration noise, affecting the driving experience of the agricultural machinery driver.
[0029] In the embodiment of the utility model, a vibration-damping rib assembly 1 is provided on the vertical side wall on one side of the width direction of the bridge conveying device body 2, which can strengthen the local stiffness of the bridge conveying device body 2, thereby effectively suppressing the vibration of the bridge conveying device body 2, reducing vibration noise, and improving the driving experience of agricultural machinery drivers.
[0030] In one embodiment, the vibration-damping rib assembly 1 includes a plurality of vibration-damping ribs, and two adjacent vibration-damping ribs are distributed at an angle. The effect of installing the vibration-damping rib assembly 1 at different positions on reducing vibration noise can be determined by simulation analysis and other methods, and the best position for installing the vibration-damping rib assembly 1 can be determined based on the simulation results. In the embodiment of the utility model, a plurality of vibration-damping ribs are installed at the best position, and two adjacent vibration-damping ribs are distributed at an angle, so as to achieve better vibration-damping effect and better noise reduction effect.
[0031] In a specific embodiment, simulation analysis found that installing the vibration-damping rib assembly 1 in the middle of the vertical side wall of the bridge conveyor body 2 has the best effect. After installing the vibration-damping rib assembly 1, the simulation results show that the peak value of the equivalent radiated sound power is significantly reduced. Under the condition of unbalanced excitation of the longitudinal component, the equivalent radiated sound power value of the non-load-bearing panel outside the bridge conveyor body 2 decreased by 2.85dB at a vibration frequency of 141Hz; the peak value of the equivalent radiated sound power of the top panel of the bridge conveyor body 2 decreased by 7.08dB, 0.72dB, and 0.75dB at vibration frequencies of 73Hz, 108Hz, and 196Hz, respectively. Under the condition of unbalanced excitation of the vertical component, when the vibration frequency of the non-load-bearing panel outside the bridge conveyor body 2 is about 167Hz, the equivalent radiated sound power decreases by 12.38dB, which is significantly reduced; when the vibration frequencies of the top panel of the bridge conveyor body 2 are 76Hz, 115Hz, and 149Hz, the equivalent radiated sound power peak values decrease by 4.89dB, 0.8dB, and 3.44dB, respectively. It can be seen from the above test results that after the utility model adds the vibration-damping rib plate assembly 1 to the vertical side wall of the bridge conveyor body 2, the vibration reduction effect is significant and the noise is significantly reduced.
[0032] In one embodiment, the two axial ends of the vibration-damping rib plate extend to the top and bottom of the bridge conveyor body 2, respectively. The vibration-damping rib plate is installed on the vertical side wall of the bridge conveyor body 2. In order to achieve a better vibration reduction effect, the two axial ends of the vibration-damping rib plate extend to the top and bottom of the bridge conveyor body 2, respectively, to achieve a better noise reduction effect.
[0033] In one embodiment, the cross-section of the vibration-damping rib is L-shaped. The L-shaped rib can ensure its shape and stability in various application scenarios, especially in situations where it needs to bear a certain load, so as to effectively transfer and disperse the load. In addition, by optimizing material selection and structural design, the L-shaped rib achieves a lighter weight while maintaining performance, thereby reducing transportation and installation costs. One side wall of the L-shaped rib is connected to the vertical side wall of the bridge conveyor body 2, and the other side wall extends in the width direction in a direction away from the bridge conveyor body 2, which can increase the stability of the bridge conveyor body 2 and reduce the vibration and vibration noise of the bridge conveyor.
[0034] In one embodiment, the vibration-damping ribs are provided with avoidance grooves for avoiding external components (such as screws). A variety of external components are installed on the bridge conveyor body 2. The vibration-damping rib assembly 1 is provided on one side of the width direction of the bridge conveyor body 2, which occupies a large space and is easy to interfere with the components of the bridge conveyor body 2. In the embodiment of the utility model, the vibration-damping ribs are provided with avoidance grooves, which can avoid the external components and other external connectors on the bridge conveyor body 2, and prevent interference from causing installation difficulties or structural damage.
[0035] In one embodiment, there are multiple vibration damping rib plate assemblies 1, and the multiple vibration damping rib plate assemblies 1 include a first vibration damping rib plate assembly and a second vibration damping rib plate assembly. The first vibration damping rib plate assembly and the second vibration damping rib plate assembly are respectively arranged on the vertical side walls on both sides of the width direction of the bridge conveying device body. The two vertical side walls of the bridge conveying device along the width direction are provided with vibration damping rib plate assemblies 1, and the two vibration damping rib plate assemblies 1 can respectively suppress the vibration of both sides of the bridge conveying device body 2 and reduce the noise generated by the bridge conveying device. In a specific embodiment, a real vehicle running noise test experiment is carried out under the same working conditions. It can be found that after the ribs are welded on the outer plate surface of the bridge, the noise at the main driver and the co-driver in the cab is reduced compared with before optimization. When no material passes through the bridge conveying device body 2, the noise at the ears of the main and co-driver in the cab is reduced by 0.6dB after the bridge conveying device structure is optimized; when there is material passing through the bridge conveying device body 2, the noise at the ears of the main driver in the cab is reduced by 1.4dB after the bridge conveying device structure is optimized, and the noise at the ears of the co-driver is reduced by 0.5dB.
[0036] In one embodiment, the first vibration damping rib plate assembly includes a plurality of first vibration damping rib plates, and the second vibration damping rib plate assembly includes a plurality of second vibration damping rib plates, and the number of the first vibration damping rib plates is the same as the number of the second vibration damping rib plates.
[0037] In one embodiment, the shape formed by the plurality of first vibration-damping ribs is the same as the shape formed by the plurality of second vibration-damping ribs. For example, the number of the first vibration-damping ribs and the number of the second vibration-damping ribs are both three, the three first vibration-damping ribs form an "N" shape, and the three second vibration-damping ribs form a mirrored "N" shape on the other vertical side wall.
[0038] In one embodiment, the vibration-damping rib assembly 1 is welded to the vertical side wall on one side of the width direction of the bridge conveyor body 2. By adopting the welding connection, the vibration-damping rib assembly 1 is more tightly connected to the vertical side wall on one side of the width direction of the bridge conveyor body 2, and the stability is better, and the cost is low and the processing is easy.
[0039] In one embodiment, the vibration-damping rib assembly 1 is integrally formed with the vertical side wall on one side of the width direction of the bridge conveying device body 2. The above structure can make the structure of the bridge conveying device body 2 more stable, reduce the vibration caused by the excitation source in the bridge conveying device body 2, reduce noise, and further improve the driving experience of the driver.
[0040] In one embodiment, a sound absorbing member for absorbing vibration noise is provided on the bridge conveying device body 2. Providing a sound absorbing member (such as sound absorbing cotton) on the bridge conveying device body 2 can significantly reduce the noise generated by the bridge conveying device body 2 and improve the driving experience of the driver.
[0041] By adopting the above-mentioned bridge conveying device, the local stiffness of the vertical side wall on one side of the width direction of the bridge conveying device body 2 can be enhanced by the vibration-damping rib assembly 1, thereby reducing the vibration and vibration noise generated by the bridge conveying device during operation, and improving the driving experience of agricultural machinery drivers. In addition, the vertical side walls on both sides of the width direction of the bridge conveying device body 2 are provided with vibration-damping rib assemblies 1, which can further enhance the vibration reduction and noise reduction effect. The vibration-damping rib assembly 1 and the vertical side walls on both sides of the width direction of the bridge conveying device body 2 are connected by welding or integral molding, so that the structure of the bridge conveying device is more stable and the vibration reduction and noise reduction effect is better.
[0042] In one embodiment, an agricultural machine is provided, comprising the above-mentioned bridge conveying device for the agricultural machine.
[0043] In the description of the present invention, it should be understood that 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0044] 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; 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.
[0045] 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.
[0046] 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 bridge conveying device for agricultural machinery, characterized in that: The bridge conveying device comprises: A bridge conveying device body (2); The vibration-damping rib assembly (1) is arranged on a vertical side wall on one side in the width direction of the bridge conveying device body (2) and is used to reduce the vibration noise emitted by the bridge conveying device body (2) to the outside.
2. The bridge conveying device for agricultural machinery according to claim 1, characterized in that: The vibration-damping rib plate assembly (1) comprises a plurality of vibration-damping rib plates, and two adjacent vibration-damping rib plates are distributed at an angle.
3. The bridge conveying device for agricultural machinery according to claim 2, characterized in that: The two axial ends of the vibration-damping rib plate extend to the top end of the bridge conveying device body (2) and the bottom end of the bridge conveying device body (2) respectively.
4. The bridge conveying device for agricultural machinery according to claim 2, characterized in that: The cross section of the vibration-damping rib plate is L-shaped.
5. The bridge conveying device for agricultural machinery according to claim 2, characterized in that: The vibration-damping rib plate is provided with an avoidance groove for avoiding external components.
6. The bridge conveying device for agricultural machinery according to claim 1, characterized in that: There are multiple vibration damping rib plate assemblies (1), and the multiple vibration damping rib plate assemblies (1) include a first vibration damping rib plate assembly and a second vibration damping rib plate assembly. The first vibration damping rib plate assembly and the second vibration damping rib plate assembly are respectively arranged on the vertical side walls on both sides of the width direction of the bridge conveying device body.
7. The bridge conveying device for agricultural machinery according to claim 1, characterized in that: The vibration-damping rib plate assembly (1) is welded to a vertical side wall on one side in the width direction of the bridge conveying device body (2).
8. The bridge conveying device for agricultural machinery according to claim 1, characterized in that: The vibration-damping rib assembly (1) is integrally formed with a vertical side wall on one side in the width direction of the bridge conveying device body (2).
9. The bridge conveying device for agricultural machinery according to any one of claims 1 to 8, characterized in that: The bridge conveying device body (2) is provided with a sound absorbing member for absorbing the vibration noise.
10. An agricultural machine, characterized in that: The agricultural machinery comprises a bridge conveying device for agricultural machinery according to any one of claims 1 to 9.