A semi-suspended shock absorption mechanism and a tractor
By employing a semi-suspended shock absorption mechanism combining an articulated structure and elastic elements in the tractor cab, the problems of high cost and poor reliability of existing hydraulic and air spring suspension shock absorption mechanisms are solved, achieving a shock absorption effect that reduces costs and improves reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LOVOL HEAVY IND CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-31
AI Technical Summary
The existing hydraulic suspension damping mechanism in tractor cabs has high maintenance costs and is susceptible to temperature effects. The air spring suspension damping mechanism requires an additional air pump and control system, resulting in high costs, poor reliability, and limited applicability.
A semi-suspended damping mechanism is adopted, which combines a hinged structure and elastic elements, including an elastic damper, a lateral limiting module and a longitudinal limiting module, to achieve damping and avoid the use of hydraulic or pneumatic systems.
It reduces manufacturing and maintenance costs, improves the reliability of the shock-absorbing structure, and is suitable for long-term use in rough road conditions.
Smart Images
Figure CN224579685U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of shock absorption technology for tractor cabs, and particularly to a semi-suspended shock absorption mechanism and a tractor. Background Technology
[0002] Tractors operate in harsh environments, with most roads being uneven and the driving experience being poor.
[0003] In existing technologies, the main shock absorption structures used in tractor cabs are hydraulic suspension shock absorption mechanisms and air spring suspension shock absorption mechanisms. These two methods each have the following problems: hydraulic suspension shock absorption mechanisms are complex, have high maintenance costs, and are susceptible to temperature changes; air spring suspension shock absorption mechanisms require additional air pumps and control systems, resulting in higher manufacturing costs. Both shock absorption methods have poor reliability and short lifespan in the working environment of tractors, and their high cost limits their applicability. Utility Model Content
[0004] The purpose of this application is to provide a semi-suspended shock absorption mechanism and tractor, which can achieve shock absorption through a combination of articulated structure and elastic element, without the need for hydraulic or pneumatic systems, thereby reducing costs and improving reliability.
[0005] In one aspect, this application provides a semi-suspended shock absorption mechanism for a tractor cab, including a shock absorption module, a lateral limiting module, and a longitudinal limiting module; The shock absorption module is an elastic shock absorber, with its lower end used for rotatable connection to the vehicle frame and its upper end used for rotatable connection to the frame of the tractor cab. The lateral limiting module includes a limiting rod, one end of which is used for rotatable connection with the vehicle frame, and the other end is used for rotatable connection with the frame of the tractor cab; the angle between the axis of the limiting rod and the axis of the elastic shock absorber is 75°~90°. The lower end of the longitudinal limiting module is used to rotatably connect with the vehicle frame, and the upper end is used to rotatably connect with the frame of the tractor cab, thereby limiting the maximum vertical displacement of the shock absorption module.
[0006] In a preferred embodiment, the lateral limiting module further includes a first mounting seat and a second mounting seat, the first mounting seat being used for mounting on the vehicle frame and the second mounting seat being used for mounting on the frame of the tractor cab; The two ends of the limiting rod are respectively hinged to the first mounting base and the second mounting base.
[0007] In a preferred embodiment, rubber pads are provided at the positions where the two ends of the limiting rod contact the first mounting base and the second mounting base, respectively.
[0008] In a preferred embodiment, the longitudinal limiting module includes a limiting band, a third mounting base, and a fourth mounting base. The third mounting base is used to be mounted on the frame of the tractor cab, and the fourth mounting base is used to be mounted on the vehicle frame. Limiting bolts are respectively provided on the third mounting base and the fourth mounting base; the limiting band is an annular ring, which is sleeved on the two limiting bolts.
[0009] In a preferred embodiment, the limiting band is in the shape of a flat, elongated oval, and a rubber pad is provided on the inner side of the band in contact with the limiting bolt.
[0010] In a preferred embodiment, the longitudinal limiting module further includes a limiting block disposed below the frame of the tractor cab; The vertical height of the limiting block is lower than the maximum height of the limiting band.
[0011] In a preferred embodiment, the shock absorption module further includes a fifth mounting base and a sixth mounting base, the fifth mounting base being used for mounting on the vehicle frame and the sixth mounting base being used for mounting on the frame of the tractor cab; The lower end of the elastic shock absorber is hinged to the fifth mounting seat, the first mounting seat is used to mount on the vehicle frame, and the second mounting seat is used to mount on the frame of the tractor cab; the upper end is hinged to the sixth mounting seat.
[0012] In a preferred embodiment, the elastic damper is a spring damper or a rubber damper.
[0013] Secondly, this application provides a tractor, including a frame, a tractor cab, and any one of the semi-suspended shock absorption mechanisms described in the previous application. The tractor cab is mounted on the frame via at least two of the semi-suspended shock absorbers.
[0014] In a preferred embodiment, there are two semi-suspended shock absorption mechanisms, which are respectively located at the left and right rear corners of the bottom of the tractor cab.
[0015] Compared with the prior art, this application has the following beneficial effects: This application provides a purely mechanical semi-suspended cab shock absorption structure, which achieves shock absorption through a combination of articulated structure and elastic elements. It eliminates the need for hydraulic or pneumatic systems, reduces manufacturing and maintenance costs, and improves reliability, making it suitable for long-term use of tractors on rough and bumpy roads. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 A schematic diagram of the semi-suspended vibration damping structure provided in the embodiments of this application after installation; Figure label: 1-First mounting base; 2-Limiting band; 3-Limit rod; 4-Limit block; 5-First frame; 6-First bolt group; 7-Elastic shock absorber; 8-Second bolt group; 9-Second frame; 10-Third mounting bracket; 11-Second mounting bracket; 12-Fifth mounting bracket; 13-Sixth mounting bracket; 14-Fourth mounting bracket; 15-Frame. Detailed Implementation
[0018] The following detailed embodiments are provided to aid the reader in gaining a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein, but rather, changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted. The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent after understanding the disclosure of this application. Throughout this specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. Conversely, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between. As used herein, the term "and / or" includes any one of the relevant items listed and any combination of any two or more of them. Although terms such as "first," "second," and "third" may be used herein to describe individual components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. More precisely, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as such in the examples may also be referred to as the second component, assembly, region, layer, or part. For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element.Therefore, the term "above" includes both "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly. The terminology used herein is for describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "comprising," "including," and "having" enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof. Variations in the shapes shown in the figures may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the figures but include changes in shape that occur during manufacturing. The features of the examples described herein may be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible as will be apparent upon understanding the disclosure of this application.
[0019] This application provides a semi-suspended shock absorption mechanism for a tractor cab, including a shock absorption module, a lateral limiting module, and a longitudinal limiting module; The shock absorption module is an elastic shock absorber, with its lower end used for rotatable connection to the vehicle frame and its upper end used for rotatable connection to the frame of the tractor cab. The lateral limiting module includes a limiting rod, one end of which is used for rotatable connection with the vehicle frame, and the other end is used for rotatable connection with the frame of the tractor cab; the angle between the axis of the limiting rod and the axis of the elastic shock absorber is 75°~90°, preferably close to being perpendicular to each other; The lower end of the longitudinal limiting module is used to rotate and connect with the frame, and the upper end is used to rotate and connect with the frame of the tractor cab. The longitudinal limiting module and the shock absorption module are nearly parallel to each other and are used to limit the maximum vertical displacement of the shock absorption module.
[0020] This solution achieves shock absorption through a combination of articulated structures and elastic elements, eliminating the need for hydraulic or pneumatic systems, reducing manufacturing and maintenance costs, and improving reliability. It is suitable for long-term use of tractors on rough and bumpy roads.
[0021] Specifically, such as Figure 1 As shown, a first mounting seat 1, a fourth mounting seat 14, and a fifth mounting seat 12 are provided at intervals on the frame 15.
[0022] The tractor cab frame includes a lower first frame 5 and a higher second frame 9, which are arranged nearly parallel to each other and connected by welding square tubing. A second mounting seat 11 is provided on the lower bottom surface of the first frame 5, opposite to the first mounting seat 1, and a third mounting seat 10 is provided on the side of the first frame 5, opposite to the fourth mounting seat 14; a sixth mounting seat 13 is provided on the second frame 9, opposite to the fifth mounting seat 12.
[0023] Each mounting bracket is a U-shaped steel structure, which can be welded to the frame 15, the first frame 5, or the second frame 9.
[0024] The elastic shock absorber 7 is vertically mounted, with its lower end hinged to the fifth mounting base 12 via the first bolt group 6, and its upper end hinged to the sixth mounting base 13. The elastic shock absorber 7 is mainly used to absorb vibrations from the ground, allowing them to be transmitted to the tractor cab after damping, thus improving the driver's driving experience.
[0025] The elastic shock absorber 7 is either a spring shock absorber or a rubber shock absorber. Spring shock absorbers utilize the elastic deformation of metal springs (such as coil springs or leaf springs) to absorb vibration energy, buffering impacts through spring compression and tension. Rubber shock absorbers use rubber as the elastic element, dissipating vibration energy through the viscoelastic properties of rubber (elastic deformation + internal friction). In this embodiment, a spring shock absorber is preferred.
[0026] The two ends of the limiting rod 3 are hinged to the first mounting seat 1 and the second mounting seat 11, respectively. The limiting rod 3 is arranged laterally to limit the lateral movement of the tractor cab.
[0027] Based on this, the angle between the axis of the limiting rod 3 and the axis of the elastic damper 7 is 75°~90°, preferably an angle that is close to being perpendicular to each other.
[0028] To improve service life and further reduce vibration transmission, rubber pads are provided at the positions where the two ends of the limit rod 3 contact the first mounting base 1 and the second mounting base 11.
[0029] The limiting band 2 is an annular ring, flat and elongated in shape, and can be made of metal or rigid plastic. A second bolt group 8, used as limiting bolts, is provided on the third mounting base 10, and the same bolt group (not shown) is provided on the fourth mounting base 14. The limiting band 2 is fitted onto the two limiting bolts, thereby limiting the first frame 5 to its highest position in the longitudinal direction.
[0030] In a preferred embodiment, a rubber pad is provided on the inner side of the limiting band 2 in the area that contacts the limiting bolt, which can further reduce the transmission of vibration.
[0031] Below the first frame 5, a limiting block 4 is also installed on the frame 15. The limiting block 4 is made of rubber and its height is lower than the maximum height of the limiting band 2, which is used to limit the first frame 5 at its lowest longitudinal position.
[0032] When this semi-suspended shock absorber is installed on a tractor, two are usually installed, one at the left rear corner and the other at the right rear corner of the tractor cab. When the tractor travels on bumpy roads, the vibrations are buffered and absorbed by the elastic shock absorber 7 and then transmitted to the first frame 5 and the second frame 9, significantly reducing the vibrations and improving ride comfort.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A semi-suspension damping mechanism characterized by, For use in tractor cabs, including shock absorption modules, lateral limit modules and longitudinal limit modules; The shock absorption module is an elastic shock absorber, with its lower end rotatably connected to the vehicle frame and its upper end rotatably connected to the frame of the tractor cab. The lateral limiting module includes a limiting rod, one end of which is rotatably connected to the vehicle frame and the other end of which is rotatably connected to the frame of the tractor cab; the angle between the axis of the limiting rod and the axis of the elastic shock absorber is 75°~90°. The lower end of the longitudinal limiting module is rotatably connected to the vehicle frame, and the upper end is rotatably connected to the frame of the tractor cab, which is used to limit the maximum vertical displacement of the shock absorption module.
2. The semi-suspension damping mechanism according to claim 1, characterized by The lateral limiting module also includes a first mounting seat and a second mounting seat, the first mounting seat being mounted on the vehicle frame and the second mounting seat being mounted on the frame of the tractor cab; The two ends of the limiting rod are respectively hinged to the first mounting base and the second mounting base.
3. The semi-suspension damping mechanism according to claim 2, characterized by Rubber pads are provided at the positions where the limiting rod contacts the first mounting base and the second mounting base, respectively.
4. The semi-suspension damping mechanism according to claim 1, characterized by, The longitudinal limiting module includes a limiting band, a third mounting base, and a fourth mounting base. The third mounting base is mounted on the frame of the tractor cab, and the fourth mounting base is mounted on the vehicle frame. Limiting bolts are respectively provided on the third mounting base and the fourth mounting base; the limiting band is an annular ring, which is sleeved on the two limiting bolts.
5. The semi-suspension damping mechanism according to claim 4, characterized by The limiting band is in the shape of a flat elongated oval, and a rubber pad is provided on the inner side of the band in contact with the limiting bolt.
6. The semi-suspended shock absorption mechanism according to claim 4, characterized in that, The longitudinal limiting module also includes a limiting block disposed below the frame of the tractor cab; The vertical height of the limiting block is lower than the maximum height of the limiting band.
7. The semi-suspension damping mechanism according to claim 1, characterized by The shock absorption module also includes a fifth mounting base and a sixth mounting base, the fifth mounting base being mounted on the vehicle frame and the sixth mounting base being mounted on the frame of the tractor cab; The lower end of the elastic shock absorber is hinged to the fifth mounting base, and the upper end is hinged to the sixth mounting base.
8. The semi-suspension damping mechanism according to claim 7, characterized by The elastic shock absorber is a spring shock absorber or a rubber shock absorber.
9. A tractor characterised in that Includes a chassis, a tractor cab, and the semi-suspended shock absorption mechanism as described in any one of claims 1 to 8. The tractor cab is mounted on the frame via at least two of the semi-suspended shock absorbers.
10. The tractor of claim 9, wherein, There are two semi-suspended shock absorption mechanisms, which are respectively located at the left and right rear corners of the bottom of the tractor cab.