A semi-trailer bumper

Abstract

The utility model provides a kind of semitrailer bumper, including protection pole mechanism and the protection frame mechanism for being rotatably connected with vehicle body, the protection pole mechanism is connected with the end of protection frame mechanism away from vehicle body;The protection pole mechanism includes protection pole subassembly and elastic member, the end of protection frame mechanism away from vehicle body is provided with sliding slot, the protection pole subassembly is slidably installed in the sliding slot, the protection pole subassembly is connected with the protection frame mechanism by the elastic member;Limiting portion is installed on the vehicle body, limiting groove for cooperating with the protection pole subassembly is arranged on the limiting portion, locking member for fixing the protection frame mechanism is installed on the vehicle body;The utility model can solve the problem of inconvenient use of fixed structure rear bumper in prior art.

Description

Technical Field

[0001] This utility model relates to the field of van technology, specifically a semi-trailer bumper. Background Technology

[0002] Currently, many semi-trailer vehicles transporting hazardous materials on the market have insufficient rear protective devices. In the event of a rear-end collision, these devices are ineffective in protecting the vehicle behind, causing it to crash under the rear of the vehicle in front, resulting in injuries or fatalities to the occupants. To prevent rear-end collisions, a rear bumper is fixedly installed at the rear of the semi-trailer. For example, utility model patent CN217598504U discloses a semi-trailer bumper (hereinafter referred to as prior art 1), which includes a rear connecting longitudinal beam, a bumper panel, a diagonal support plate, and a lower crossbeam. The rear connecting longitudinal beam is used to connect to the main beam at the lower rear end of the semi-trailer. The bumper panel is connected to the rear end of the rear connecting longitudinal beam. The diagonal support plate is made of high-strength steel and is welded to the bottom surface of the rear connecting longitudinal beam, and is inclined downwards and backwards. The lower crossbeam is provided at the end of the diagonal support plate relative to the rear connecting longitudinal beam, and the lower crossbeam is bolted to the diagonal support plate.

[0003] However, in the existing technology 1, the rear bumper, which is fixedly installed behind the frame, needs to be removed in order to smoothly connect the semi-trailer (front vehicle) and the center-axle rear vehicle into a double-trailer train and operate normally. When it is detached from the center-axle rear vehicle and used alone, or when the semi-trailer is inspected annually, the rear bumper assembly needs to be reinstalled, which causes inconvenience in use. Utility Model Content

[0004] The purpose of this utility model is to provide a semi-trailer bumper that can solve the problem of inconvenience in using the fixed structure rear bumper in the prior art during actual use.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A semi-trailer bumper includes a protective bumper mechanism and a protective frame mechanism for rotatably connecting with the vehicle body, wherein the protective bumper mechanism is connected to the end of the protective frame mechanism away from the vehicle body.

[0007] The guard bar mechanism includes a guard bar assembly and an elastic element. A sliding groove is provided at the end of the guard bar mechanism away from the vehicle body. The guard bar assembly is slidably installed in the sliding groove. The guard bar assembly is connected to the guard bar mechanism through the elastic element.

[0008] The vehicle body is equipped with a limiting part, which has a limiting groove for cooperating with the protective bar assembly. The vehicle body is also equipped with a locking component for fixing the protective frame mechanism.

[0009] Preferably, a buffer pad is connected to the protective bar assembly.

[0010] Preferably, the guard bar assembly includes a guard bar body and a movable component, the movable component is slidably connected to the slide groove, the movable component is connected to the guard frame mechanism through the elastic component, and the guard bar body is hinged to the rotating frame.

[0011] Preferably, the protective frame mechanism includes a rotating frame and a support frame, the rotating frame is rotatably connected to the vehicle body, the support frame is detachably connected to the rotating frame, and the slide groove is provided on the support frame.

[0012] Preferably, a reinforcing frame is connected to the support frame, and the reinforcing frame and the support frame are connected to form a triangular structure.

[0013] Preferably, the rotating frame is rotatably connected to a buffer mechanism on the side closest to the vehicle body.

[0014] Preferably, the buffer mechanism includes a buffer element and a torsion spring, wherein the buffer element is connected to the rotating frame via the torsion spring.

[0015] Preferably, a baffle is connected to the rotating frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In this utility model, the protective frame mechanism is rotatably connected to the vehicle body via a pivot. When needed (such as when loading and unloading goods, repairing the undercarriage, or connecting a mid-mounted vehicle, it can be flipped to a high position to avoid obstructing operations or installation space), the protective frame mechanism can be rotated upwards and locked by a locking component. Compared with the existing fixed bumper, this significantly improves the vehicle's versatility and operational flexibility in complex scenarios.

[0018] By setting the elastic element, when the protective bar assembly is impacted, the elastic element can buffer the impact through deformation, avoiding damage to the fixed bumper caused by rigid connection; when the protective bar assembly rotates upward with the protective frame mechanism, the protective bar assembly can automatically slide into the limiting groove under the drive of the elastic element, without the need for manual alignment and fixing, reducing the preparation time before loading, unloading or passage. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of this utility model.

[0022] Figure 3 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 This utility model Figure 2 A magnified view of a section at point B.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 101-Guard bar mechanism, 102-Guard frame mechanism, 103-Elastic element, 104-Slide groove, 105-Limiting part, 106-Limiting groove, 107-Locking element, 108-Buffer pad, 109-Guard bar body, 110-Moving part, 111-Rotating frame, 112-Support frame, 113-Reinforcing frame, 114-Buffer mechanism, 115-Buffer element, 116-Baffle, 117-Ball head rod, 118-Torsion spring, 119-Buffer part. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0032] See Figures 1-4 This embodiment discloses a semi-trailer bumper, including a protective bumper mechanism 101 and a protective frame mechanism 102 for rotatably connecting with the vehicle body. The protective bumper mechanism 101 and the protective frame mechanism 102 are connected to the end away from the vehicle body.

[0033] The guard bar mechanism 101 includes a guard bar assembly and an elastic element 103. The end of the guard frame mechanism 102 away from the vehicle body is provided with a slide groove 104. The guard bar assembly is slidably installed in the slide groove 104. The guard bar assembly is connected to the guard frame mechanism 102 through the elastic element 103.

[0034] A limiting part 105 is installed on the vehicle body, and a limiting groove 106 is provided on the limiting part 105 for cooperating with the protective bar assembly. A locking member 107 is installed on the vehicle body for fixing the protective frame mechanism 102.

[0035] In this embodiment, the protective frame mechanism 102 is rotatably connected to the vehicle body via a pivot. It can be flipped to a higher position when needed, such as for loading / unloading goods, inspecting the undercarriage, or connecting a mid-mounted vehicle, avoiding obstruction of work or installation space. The protective frame mechanism 102 is locked by a locking member 107, significantly improving the vehicle's versatility and operational flexibility in complex scenarios compared to existing fixed bumpers. The locking member 107 is a fixing nut, threadedly connected to the pivot. Tightening the fixing nut generates an axial preload that presses the protective frame mechanism 102 axially against the vehicle body, thus fixing the protective frame mechanism 102, adjusted to a predetermined position, onto the positioning surface of the vehicle body. The elastic member 103, when the protective bumper assembly is impacted, cushions the impact through deformation, preventing damage caused by the rigid connection of the fixed bumper. When the protective bumper assembly... When the component rotates upward with the protective frame mechanism 102, the protective bar assembly can automatically slide into the limiting groove 106 under the drive of the elastic member 103, eliminating the need for manual alignment and fixing, thus reducing preparation time before loading, unloading, or passage. Furthermore, when the protective frame mechanism 102 and the protective bar assembly need to be flipped to a higher position, and the protective bar assembly enters the limiting groove 106 under the force provided by the elastic member 103, the circumferential freedom of the protective bar assembly and the protective frame mechanism 102 is mechanically constrained, directly preventing the protective frame mechanism 102 from rotating around the axis of rotation. The fixing nut does not need to provide anti-rotation friction torque when the protective frame mechanism 102 is flipped to a higher position, further reducing the workload of the fixing nut. In this embodiment, the structure and shape of the limiting part 105 and the limiting groove 106 can be selected according to actual needs; the shapes of the limiting part 105 and the limiting groove 106 will not be described in detail here.

[0036] In some embodiments, a buffer pad 108 is connected to the bumper assembly. The buffer pad 108 is made of rubber material. When the bumper assembly is slightly scraped during vehicle operation, or accidentally comes into contact with other devices during loading and unloading, the buffer pad 108 will compress and deform after colliding with other objects, absorbing some of the impact energy and transforming the instantaneous rigid collision into a softer contact. Furthermore, when the buffer pad 108 rotates with the bumper assembly to engage with the limiting groove 106, and the bumper assembly slides into the limiting groove 106 under the drive of the elastic member 103, the buffer pad 108 can fill the gap between the bumper assembly and the limiting groove 106, forming elastic support, absorbing small displacement energy, eliminating shaking noise, and improving the user experience.

[0037] In some embodiments, the guardrail assembly includes a guardrail body 109 and a movable member 110. The movable member 110 is slidably connected to the groove 104 and connected to the guardrail mechanism 102 via the elastic member 103. The guardrail body 109 is hinged to the 107. In this embodiment, the buffer pad 108 is mounted on the guardrail body 109, the movable member 110 is provided with a ball groove, and the guardrail body 109 is connected to a ball head rod 117 for engaging with the ball groove. The guardrail body 109 is rotatably connected to the ball groove via the ball head rod 117, so that the guardrail body 109 can swing, pitch, or deflect in multiple directions around the center of the ball groove after being impacted, adapting to impact forces from different directions.

[0038] In some embodiments, the protective frame mechanism 102 includes a rotating frame 111 and a support frame 112. The rotating frame 111 is rotatably connected to the vehicle body, and the support frame 112 is detachably connected to the rotating frame 111. The sliding groove 104 is disposed on the support frame 112. In this embodiment, the locking member 107 is threadedly connected to the rotating frame 111, and the support frame 112 and the rotating frame 111 are detachably connected by mounting bolts, thereby facilitating the replacement of the support frame 112 and the protective bar mechanism 101 mounted on the support frame 112.

[0039] In some embodiments, a reinforcing frame 113 is connected to the support frame 112, and the reinforcing frame 113 and the support frame 112 form a triangular structure after being connected. The triangular structure formed by the connection of the reinforcing frame 113 and the support frame 112 can bear the main collision load and significantly reduce the radial shear force at the pivot point; it has good deformation resistance and stability.

[0040] In some embodiments, a buffer mechanism 114 is rotatably connected to the side of the rotating frame 111 closest to the vehicle body. In this embodiment, the buffer mechanism 114 is used to prevent the rotating frame 111 from accelerating and hitting the ground, the rear beam of the vehicle body, or the guardrail due to gravity when it flips downward to reset, thereby preventing damage to the vehicle body or guardrail assembly.

[0041] In some embodiments, the buffer mechanism 114 includes a buffer element 115 and a torsion spring 118, wherein the buffer element 115 is connected to the rotating frame 111 via the torsion spring 118. In this embodiment, a rotating shaft is fixedly connected to the buffer element 115, and the rotating shaft is connected to the rotating frame 111 via a conventional rotating bearing. One end of the torsion spring 118 is connected to the rotating frame 111, and the other end is connected to the buffer element 115. When the buffer element 115 rotates downward with the moving member 110, after the buffer element 115 contacts the ground, the rear beam of the vehicle body, or the guardrail, the torsion spring 118 will undergo torsional compression deformation, which plays a buffering role and prevents the rotating frame 111 from colliding with the ground, the rear beam of the vehicle body, or the guardrail.

[0042] In some embodiments, a buffer portion 119 is connected to the buffer member 115. In this embodiment, the buffer portion 119 is made of rubber material and has a cylindrical structure. The cylindrical structure of the buffer portion 119 is such that the surface in contact with the ground, vehicle rear beam, or guardrail is arc-shaped, thereby distributing the concentrated force at the contact point of the buffer portion 119 to a larger contact area, reducing the pressure per unit area, reducing local wear or damage to the buffer portion 119 itself and the contacting object, and extending the service life of the buffer mechanism 114 and the contacting components. Furthermore, in actual use, the contact angle between the buffer portion 119 and the ground or vehicle body may vary depending on the rotation amplitude of the moving member 110, the flatness of the ground, or differences in the vehicle body structure. The symmetry of the cylindrical structure of the buffer portion 119 allows it to maintain a relatively stable force state and buffering performance when in contact at different angles.

[0043] In some embodiments, a baffle 116 is connected to the rotating frame 111. In this embodiment, the baffle 116 is detachably connected to the rotating frame 111, and the baffle 116 is correspondingly arranged to the tires mounted on the vehicle body; by providing the baffle 116, hard objects such as gravel and metal fragments kicked up by the tires during vehicle movement can be blocked. Although preferred embodiments of the present invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A semi-trailer bumper characterized in that: It includes a guard bar mechanism (101) and a guard frame mechanism (102) for rotatably connecting with the vehicle body, wherein the guard bar mechanism (101) and the guard frame mechanism (102) are connected at the end away from the vehicle body; The guard bar mechanism (101) includes a guard bar assembly and an elastic element (103). The end of the guard frame mechanism (102) away from the vehicle body is provided with a slide groove (104). The guard bar assembly is slidably installed in the slide groove (104). The guard bar assembly is connected to the guard frame mechanism (102) through the elastic element (103). The vehicle body is equipped with a limiting part (105), the limiting part (105) is provided with a limiting groove (106) for cooperating with the protective bar assembly, and the vehicle body is equipped with a locking part (107) for fixing the protective frame mechanism (102).

2. A semi-trailer bumper according to claim 1, characterised in that: A buffer pad (108) is connected to the protective bar assembly.

3. A semi-trailer bumper according to claim 1, characterized in that: The protective bar assembly includes a protective bar body (109) and a movable part (110). The movable part (110) is slidably connected to the slide groove (104), and the movable part (110) is connected to the protective frame mechanism (102) through the elastic member (103).

4. A semi-trailer bumper according to claim 3, characterised in that: The protective frame mechanism (102) includes a rotating frame (111) and a support frame (112). The rotating frame (111) is rotatably connected to the vehicle body. The support frame (112) is detachably connected to the rotating frame (111). The slide groove (104) is provided on the support frame (112). The protective bar body (109) is hinged to the rotating frame (111).

5. A semi-trailer bumper according to claim 4, characterised in that: A reinforcing frame (113) is connected to the support frame (112), and the reinforcing frame (113) and the support frame (112) form a triangular structure after being connected.

6. A semi-trailer bumper according to claim 5, characterised in that: The rotating frame (111) is rotatably connected to a buffer mechanism (114) on the side near the vehicle body.

7. A semi-trailer bumper according to claim 6, characterised in that: The buffer mechanism (114) includes a buffer element (115) and a torsion spring (118), wherein the buffer element (115) is connected to the rotating frame (111) via the torsion spring (118).

8. A semi-trailer bumper according to claim 7, characterised in that: A baffle (116) is connected to the rotating frame (111).

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