Tractor rollover emergency buffering device and working method thereof

Abstract

The invention belongs to the technical field of motor tractors, and particularly relates to a motor tractor rollover emergency buffering device and a working method thereof.The device comprises a back plate arranged on the outer wall of a motor tractor cab; the protection mechanisms are symmetrically arranged on the left side and the right side of the back plate; the protection rods in the protection mechanisms are suitable for deflecting when the tractor turns leftwards and rightwards so that the abutting balls at the top ends of the corresponding protection rods can collide with the ground. The pair of locking mechanisms is arranged on the back plate; a locking piece in each locking mechanism is connected with a push rod in the corresponding protection mechanism; the locking pieces are suitable for unlocking the corresponding push rods when the tractor turns leftwards and rightwards, so that the push rods push the corresponding protection rods to stretch out. The swinging mechanism is arranged on the back plate and is connected with the two locking mechanisms; wherein a swinging hammer in the swinging mechanism is suitable for inclining towards the corresponding direction when the tractor turns leftwards and rightwards so as to pull the corresponding locking piece to be separated from the locking of the corresponding push rod.

Description

Technical Field

[0001] This invention belongs to the field of tractor technology, specifically relating to an emergency buffer device for tractor rollover and its working method. Background Technology

[0002] Currently, in rollover accidents caused by heavy semi-trailer tractors due to emergency avoidance, excessively high center of gravity, slippery road surface, failure to slow down on curves, etc., since the trailer's mass is much greater than that of the tractor, the trailer usually rolls over first and then violently drags the tractor over through the rigid connection (saddle).

[0003] Existing safety protection technologies generally employ active systems such as the electronic stability program integrated into the tractor unit to prevent rollovers. However, when the tractor unit is cornering, the cargo box tilts, and the electronic stability program tries to straighten it to avoid rollover. In a typical tractor unit rollover, the cargo box rolls over first, pulling the tractor unit to roll over as well. Because the cargo box is heavy, if the tilt angle is too large and the electronic system is insufficient to pull it back, the cargo box rolls over, dragging the tractor unit to roll over as well. The electronic stability program integrated into the tractor unit cannot intervene and buffer the rollover during the rollover process, resulting in the tractor unit's cab slamming into the ground at high speed, causing catastrophic injuries to the driver.

[0004] Therefore, an emergency buffer device for tractor rollover and its working method are designed to solve the technical problem that the electronic stability program in the prior art cannot intervene and buffer the rollover state of the tractor during the rollover process, which leads to the tractor cab hitting the ground at high speed.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0006] This disclosure provides at least one emergency buffer device for tractor rollover and its working method.

[0007] In a first aspect, embodiments of this disclosure provide an emergency buffer device for a tractor rollover, comprising:

[0008] Back panel, installed on the outer wall of the tractor cab;

[0009] A pair of protective mechanisms are symmetrically arranged on the left and right sides of the back panel; among them

[0010] The guard bars in each of the aforementioned protective mechanisms are adapted to deflect when the tractor rolls to the left or right so that the abutment balls at the top of the corresponding guard bars strike the ground;

[0011] A pair of locking mechanisms are provided on the back plate;

[0012] The locking element in each of the locking mechanisms is connected to the push rod in the corresponding protective mechanism; wherein

[0013] Each of the aforementioned locking components is adapted to release the locking of the corresponding push rod when the tractor rolls to the left or right, so that each push rod pushes the corresponding guard rod to extend.

[0014] A swing mechanism is mounted on the back plate and connected to two locking mechanisms; wherein

[0015] The swing hammer in the swing mechanism is adapted to tilt in the corresponding direction when the tractor rolls to the left or right, thereby pulling the corresponding locking member to disengage from the corresponding push rod.

[0016] In one optional implementation, each of the protective mechanisms includes:

[0017] The sliding sleeve is connected to the back plate;

[0018] The push rod is slidably disposed inside the sliding sleeve, and the locking member passes through the sliding sleeve and is inserted into the outer wall of the push rod;

[0019] A protective spring is disposed inside the push rod, with its top end connected to the top end of the inner wall of the sliding sleeve and its bottom end connected to the push rod.

[0020] The protective spring is adapted to rebound when the locking element disengages from the push rod, thereby pushing the push rod to slide downward within the sleeve.

[0021] In one alternative embodiment, a hydraulic damper is provided on the outer wall of the push rod;

[0022] The outer wall of the hydraulic buffer is connected to the outer wall bearing of the push rod, and the output end of the hydraulic buffer is connected to the bearing of the protective rod; wherein

[0023] The hydraulic damper is adapted to push the guard rod to deflect around its bearing connection with the sleeve as it slides downward following the push rod.

[0024] In one optional embodiment, a protective rack is connected to the bottom end of the push rod, and a protective gear is engaged with one side of the protective rack.

[0025] The protective gear is located inside the protective sleeve connected to the outer wall of the sliding sleeve; wherein

[0026] A ratchet is provided on one side of the protective gear, and a pawl engages on the outer wall of the ratchet;

[0027] The pawl is connected to the bearing on the inner wall of the protective sleeve;

[0028] A limit spring is provided on the outer wall of the pawl, and the limit spring is connected to the inner wall of the protective sleeve; wherein

[0029] The protective rack is adapted to rotate the protective gear as the follower push rod slides downwards, thereby driving the ratchet to rotate; and

[0030] The limiting spring is adapted to pull the pawl against the outer wall of the ratchet when the ratchet rotates and moves the pawl.

[0031] In one optional implementation, each of the locking mechanisms includes:

[0032] A locking sleeve is disposed on one side of the back plate and communicates with the interior of the corresponding sliding sleeve.

[0033] The sliding locking rod is slidably connected to the semi-circular fan seat in the swing mechanism; wherein

[0034] A sliding block is provided at one end of the sliding locking rod that passes through the locking sleeve, and the sliding block is slidably connected to the locking sleeve;

[0035] The locking element is horizontally disposed at the end of the sliding block facing the push rod; and

[0036] A locking spring is horizontally positioned between the end face of the sliding block facing the sliding locking rod and the inner wall of the locking sleeve; wherein...

[0037] The sliding locking rod is adapted to drive the sliding block to slide inside the locking sleeve when pulled, thereby pulling the locking member to disengage from the corresponding push rod.

[0038] In one alternative embodiment, a locking rack is connected to the end of the sliding locking rod away from the sliding block;

[0039] A locking gear is engaged with the lower part of the locking rack, and an arc-shaped groove is provided on the end face of the locking gear.

[0040] The axes of the two locking gears overlap and are arranged axially symmetrically, and a fixed shaft is provided through the axes of the two locking gears.

[0041] The fixed shaft is connected to the semi-circular fan base; wherein

[0042] Each locking gear is adapted to mesh with the corresponding locking rack when rotating, thereby pulling the corresponding locking element through the corresponding sliding locking rod.

[0043] In one alternative implementation, the swing mechanism includes:

[0044] A swing rod is connected to the fixed shaft bearing, and a swing hammer is provided on the lower end face of the swing rod;

[0045] The outer wall of the swing rod has a placement position to accommodate the swing pin; wherein

[0046] The two ends of the swing pin are respectively located in arc-shaped grooves on the two locking gears; wherein

[0047] The swing hammer is adapted to tilt in the corresponding direction when the tractor rolls to the left or right, thereby driving the swing pin to rotate the corresponding locking gear through the swing rod.

[0048] In one optional embodiment, an arc-shaped slip ring is provided inside the semi-circular fan base;

[0049] An arc-shaped sleeve is provided through the swing rod, and the arc-shaped sleeve is slidably fitted on the outer wall of the arc-shaped slip ring;

[0050] Buffer springs are fitted on both sides of the arc-shaped sleeve on the outer wall of the arc-shaped slip ring.

[0051] In one alternative embodiment, the semi-circular fan base is connected to the back plate.

[0052] Secondly, this disclosure also provides a method for operating a tractor rollover emergency buffer device, comprising:

[0053] The tractor tilts the swing hammer to the left and right by turning the tractor to the left and right, which causes the swing rod to deflect, and then drives the corresponding locking gear to rotate through the swing pin.

[0054] The rotation of the locking gear drives the locking rack and the corresponding sliding locking rod to move, thereby causing the corresponding locking component to disengage from the corresponding push rod.

[0055] The protective spring rebounds, pushing the push rod to slide within the sleeve, simultaneously causing the hydraulic damper to deflect, which in turn pushes the protective rod to deflect around the bearing connection between the protective rod and the sleeve, causing the impact ball to strike the ground.

[0056] The beneficial effect of this invention is that, by providing a swing mechanism, a locking mechanism, and a protective mechanism, the swing hammer in the swing mechanism swings in the same direction as the overturned state of the tractor cab, triggering the locking member in the corresponding side locking mechanism to release the locking of the protective rod in the corresponding protective mechanism, thereby causing the corresponding protective rod to deflect, so that the abutment ball at the top of the protective rod hits the ground before the tractor cab, thus realizing the intervention and buffering of the overturned state of the tractor cab.

[0057] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0058] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0059] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0060] Figure 1 An overall perspective view provided for an embodiment of this disclosure;

[0061] Figure 2 This is a schematic diagram of the overall front sectional view of an embodiment of the present disclosure;

[0062] Figure 3 This is an exploded structural diagram of the swing mechanism provided in an embodiment of the present disclosure;

[0063] Figure 4 An exploded view of the internal structure of the semi-circular fan base is provided for embodiments of this disclosure;

[0064] Figure 5 This is a schematic diagram of the explosion structure of the protective mechanism provided in an embodiment of this disclosure.

[0065] In the picture:

[0066] 1. Tractor cab; 10. Back panel;

[0067] 2. Swinging mechanism; 20. Semi-circular fan base; 22. Arc-shaped slip ring; 23. Buffer spring; 24. Swinging pin; 25. Swinging rod; 250. Placement position; 26. Arc-shaped sleeve; 27. Swinging hammer;

[0068] 3. Locking mechanism; 30. Locking gear; 31. Arc-shaped slide groove; 32. Fixed shaft; 33. Locking rack; 34. Sliding locking rod; 35. Sliding block; 36. Locking spring; 37. Locking component; 38. Locking sleeve;

[0069] 4. Protective mechanism; 40. Sliding sleeve; 41. Push rod; 42. Protective spring; 43. Protective rack; 44. Protective sleeve; 440. Pawl; 441. Limiting spring; 442. Ratchet; 443. Protective gear; 45. Protective rod; 46. Hydraulic buffer; 47. Contact ball. Detailed Implementation

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0072] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0073] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0074] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0075] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0076] Research has found that existing safety protection technologies generally use active systems such as the electronic stability program built into the tractor to prevent rollovers. However, in extreme working conditions, system failures, or when accidents are unavoidable, these systems cannot intervene to buffer the rollover state of the tractor during the rollover process, which can lead to the tractor cab slamming into the ground at high speed, causing devastating injuries to the driver.

[0077] Based on the above research, this disclosure provides an emergency buffer device for tractor rollover and its working method. It is equipped with a swing mechanism, a locking mechanism and a protective mechanism. The swing hammer in the swing mechanism swings in the same direction as the rollover state of the tractor cab, triggering the locking member in the corresponding side locking mechanism to release the locking of the protective rod in the corresponding protective mechanism. This causes the corresponding protective rod to deflect, so that the abutment ball at the top of the protective rod hits the ground before the tractor cab, thus realizing the intervention and buffering of the rollover state of the tractor cab.

[0078] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0079] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0080] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0081] In some embodiments, such as Figure 1 and Figure 2As shown, the back plate 10 is fixed to the outer wall of the tractor cab, and the semi-circular fan seat 20 is fixed to the back plate 10. Each locking mechanism 3 and the corresponding protective mechanism 4 are symmetrically arranged on the left and right sides of the semi-circular fan seat 20. When the tractor is traveling straight, the swing hammer 27 is connected to the swing rod 25 and remains vertically stationary. When the tractor turns left or right, the swing hammer 27 swings due to inertia. At this time, the buffer springs 23 on both sides of the swing rod 25 limit the swing amplitude of the swing rod 25 to prevent the swing rod 25 from swinging excessively and accidentally touching the subsequent corresponding locking mechanism 3 and protective mechanism 4.

[0082] In some embodiments, such as Figure 2 and Figure 3 As shown, during the swing of the swing rod 25, the arc-shaped sleeve 26, which passes through the swing rod 25, slides on the outer wall of the arc-shaped slip ring 22, thereby controlling the swing direction of the swing rod 25 and the swing hammer 27. When the tractor cab overturns, the swing rod 25 swings in the overturning direction. The buffer spring 23 in the current overturning direction cannot limit the swing of the swing rod 25 and is compressed by the arc-shaped sleeve 26. Simultaneously, the swing pin 24, which is inserted in the placement position 250, slides in the arc-shaped groove 31 opened on the two locking gears 30 during the deflection of the swing plate 25. Figure 3 It is known that the two locking gears 30 are arranged symmetrically. Therefore, as the swing pin 24 slides, when the swing pin 24 slides to the end of the corresponding arc-shaped groove 31, it moves the corresponding locking gear 30 to rotate, and then pulls the corresponding locking mechanism 3 to release the lock on the corresponding protective mechanism 4 through the current locking gear 30, so as to use the corresponding protective mechanism 4 to protect the overturned tractor cab 1.

[0083] In some embodiments, such as Figure 2 and Figure 4 As shown in the above description, when the tractor cab 1 tilts to the left or right, the corresponding locking gear 30 is rotated by the swing pin 24. During this rotation, the locked gear 30 drives the rack 33, which meshes with it, to move, which in turn drives the sliding locking rod 34 connected to the rack 33 to move. At this time, the sliding block 35 slides within the locking sleeve 38, the locking spring 36 is compressed, and as the sliding block 35 is pulled, it causes the locking member 37 connected to it to disengage from the corresponding side protection. The locking of push rod 41 in mechanism 4 causes the protective rod 45 in the corresponding protective mechanism 4 to deflect to protect the tractor cab 1. (When there is no rollover, the locking spring 36 is used to push the corresponding sliding block 35 so that the corresponding locking part 37 is inserted into the corresponding push rod 41 to lock, so as to prevent the protective mechanism from being accidentally triggered. When the rollover is over, when the protective mechanism is reset, after the corresponding push rod 41 moves to reset, the locking spring 36 rebounds, so that the corresponding locking part 37 is re-inserted into the push rod 41 to lock.)

[0084] In some embodiments, such as Figures 2 to 4 As shown, when the locking element 37 disengages from locking the push rod 41, the protective spring 42 rebounds, pushing the push rod 41 to slide downwards inside the sliding sleeve 40. At this time, the hydraulic buffer 46, which is connected to the bearing on the outer wall of the push rod 41, also moves downwards. Figure 4 It is known that the output end of the hydraulic buffer 46 is connected to the outer wall bearing of the protective rod 45, and the bottom end of the protective rod 45 is connected to the bottom bearing of the sliding sleeve 40. At this time, as the hydraulic buffer 46 moves down, its output end pushes the protective rod 45 to deflect around the bearing connection between the protective rod 45 and the bottom of the sliding sleeve 40. After the protective rod 45 deflects, it extends out of the outside of the tractor cab 1. The abutment ball 47 fixed at the top of the protective rod 45 will hit the bottom surface before the tractor cab 1. The hydraulic buffer 46 buffers the impact force after the abutment ball 47 hits the ground (the hydraulic buffer 46 is existing technology and will not be described in detail here), to prevent the tractor cab 1 from directly hitting the ground and causing injury to the driver.

[0085] When the push rod 41 is pushed down into the sliding sleeve 40 by the protective spring 42, the protective rack 43 fixed at the bottom of the push rod 41 moves down synchronously, driving the protective gear 443 meshing with the protective rack 43 to rotate. The protective gear 443 drives the ratchet 442 fixed on its outer side to rotate. The pawl 440 on the outer side of the ratchet 442 is always in contact with the outer wall of the ratchet 442 under the tension of the limiting spring 441. Through the cooperation of the ratchet 442 and the pawl 440, the impact force after the contact ball 47 hits the ground is avoided, so that the push rod 41 is reset.

[0086] All of the above structures are implemented using mechanical structures. Compared with the existing electronic stabilization program, this avoids the inability to intervene and buffer the rollover state of the tractor when the system fails under extreme working conditions, effectively improving the safety protection for the driver.

[0087] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0088] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0089] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0090] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0091] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An emergency buffer device for a tractor rollover, characterized in that, include: Back panel (10) is installed on the outer wall of the tractor cab (1); A pair of protective mechanisms (4) are symmetrically arranged on the left and right sides of the back plate (10); wherein The guard rods (45) in each of the aforementioned protective mechanisms (4) are adapted to deflect when the tractor (1) overturns to the left or right so that the abutment ball (47) at the top of the corresponding guard rod (45) hits the ground; A pair of locking mechanisms (3) are provided on the back plate (10); The locking element (37) in each of the locking mechanisms (3) is connected to the push rod (41) in the corresponding protective mechanism (4); in Each of the locking elements (37) is adapted to release the locking of the corresponding push rod (41) when the tractor (1) overturns to the left or right, so that each push rod (41) pushes the corresponding guard rod (45) to extend. A swing mechanism (2) is mounted on the back plate (10) and connected to two locking mechanisms (3); wherein The swing hammer (27) in the swing mechanism (2) is adapted to tilt in the corresponding direction when the tractor (1) overturns to the left or right, thereby pulling the corresponding locking element (37) to disengage from the locking of the corresponding push rod (41).

2. The tractor rollover emergency buffer device as described in claim 1, characterized in that, Each of the aforementioned protective mechanisms (4) includes: A sliding sleeve (40) is connected to the back plate (10); The push rod (41) is slidably disposed inside the sliding sleeve (40), and the locking member (37) passes through the sliding sleeve (40) and is inserted into the outer wall of the push rod (41); A protective spring (42) is disposed inside the push rod (41), and the top end of the protective spring (42) is connected to the top end of the inner wall of the sliding sleeve (40), and the bottom end is connected to the push rod (41). The protective spring (42) is adapted to rebound when the locking member (37) disengages from the locking of the push rod (41) to push the push rod (41) to slide downward inside the sleeve (40).

3. The emergency buffer device for tractor rollover as described in claim 2, characterized in that, A hydraulic buffer (46) is provided on the outer wall of the push rod (41). The outer wall of the hydraulic buffer (46) is connected to the outer wall bearing of the push rod (41), and the output end of the hydraulic buffer (46) is connected to the bearing of the protective rod (45). in The hydraulic damper (46) is adapted to push the guard rod (45) to deflect about its bearing connection with the sleeve (40) as the follower push rod (41) slides down.

4. The tractor rollover emergency buffer device as described in claim 3, characterized in that, The bottom end of the push rod (41) is connected to a protective rack (43), and a protective gear (443) is engaged on one side of the protective rack (43). The protective gear (443) is located inside the protective sleeve (44) connected to the outer wall of the sliding sleeve (40); wherein A ratchet (442) is provided on one side of the protective gear (443), and a pawl (440) is engaged on the outer wall of the ratchet (442). The pawl (440) is connected to the inner wall bearing of the protective sleeve (44); A limit spring (441) is provided on the outer wall of the pawl (440), and the limit spring (441) is connected to the inner wall of the protective sleeve (44); wherein The protective rack (43) is adapted to drive the protective gear (443) to rotate when the follower push rod (41) slides downward, thereby driving the ratchet (442) to rotate; and The limiting spring (441) is adapted to pull the pawl (440) to fit against the outer wall of the ratchet (442) when the ratchet (442) rotates and moves the pawl (440).

5. The tractor rollover emergency buffer device as described in claim 4, characterized in that, Each of the aforementioned locking mechanisms (3) includes: Locking sleeve (38) is disposed on one side of the back plate (10) and communicates with the interior of the corresponding sliding sleeve (40). The sliding locking rod (34) is slidably connected to the semi-circular fan seat (20) in the swing mechanism (2); wherein The sliding locking rod (34) has a sliding block (35) at one end that passes through the locking sleeve (38), and the sliding block (35) is slidably connected to the locking sleeve (38); The locking element (37) is horizontally positioned at one end of the sliding block (35) facing the push rod (41); and A locking spring (36) is horizontally positioned between the end face of the sliding block (35) facing the sliding locking rod (34) and the inner wall of the locking sleeve (38); wherein The sliding locking rod (34) is adapted to drive the sliding block (35) to slide inside the locking sleeve (38) when it is pulled, thereby pulling the locking member (37) to disengage from the corresponding push rod (41).

6. The tractor rollover emergency buffer device as described in claim 5, characterized in that, The end of the sliding locking rod (34) away from the sliding block (35) is connected to a locking rack (33); The locking rack (33) is meshed with a locking gear (30) below, and an arc-shaped groove (31) is provided on the end face of the locking gear (30). The axes of the two locking gears (30) overlap and are arranged axially symmetrically, and a fixed shaft (32) is provided through the axes of the two locking gears (30). The fixed shaft (32) is connected to the semi-circular fan base (20); wherein Each locking gear (30) is adapted to mesh with the corresponding locking rack (33) when rotating, thereby pulling the corresponding locking element (37) through the corresponding sliding locking rod (34).

7. The tractor rollover emergency buffer device as described in claim 6, characterized in that, The swing mechanism (2) includes: The swing rod (25) is connected to the fixed shaft (32) bearing, and the lower end face of the swing rod (25) is provided with a swing hammer (27). The outer wall of the swing rod (25) is provided with a placement position (250) to accommodate the swing pin (24); wherein The two ends of the swing pin (24) are respectively located in the arc-shaped grooves (31) on the two locking gears (30); wherein The swing hammer (27) is adapted to tilt in the corresponding direction when the tractor (1) flips to the left or right, and then drives the swing pin (24) to rotate the corresponding locking gear (30) through the swing rod (25).

8. The tractor rollover emergency buffer device as described in claim 7, characterized in that, The interior of the semi-circular fan base (20) is provided with an arc-shaped slip ring (22); An arc-shaped sleeve (26) is provided through the swing rod (25), and the arc-shaped sleeve (26) is slidably sleeved on the outer wall of the arc-shaped slip ring (22); Buffer springs (23) are fitted on both sides of the arc-shaped sleeve (26) on the outer wall of the arc-shaped slip ring (22).

9. The tractor rollover emergency buffer device as described in claim 8, characterized in that, The semi-circular fan base (20) is connected to the back plate (10).

10. A method for operating an emergency buffer device for a tractor rollover, characterized in that, The tractor (1) flips to the left and right, causing the swing hammer (27) to tilt to the left and right, which in turn causes the swing rod (25) to deflect, and then drives the corresponding locking gear (30) to rotate through the swing pin (24); The rotation of the locking gear (30) drives the locking rack (33) and the corresponding sliding locking rod (34) to move, thereby causing the corresponding locking element (37) to disengage from the corresponding push rod (41). The rebound of the protective spring (42) pushes the push rod (41) to slide inside the sleeve (40), which in turn drives the hydraulic damper (46) to deflect, thereby pushing the protective rod (45) to deflect around the bearing connection between the protective rod (45) and the sleeve (40) so that the impact ball (47) hits the ground.

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