A flatbed semitrailer platform quick widening locking structure
By designing the articulation and locking methods for the widened platform and locking mechanism, the structural strength and operational convenience issues of traditional flatbed semi-trailer platform widening methods have been solved, achieving a fast, stable, and easy-to-operate widening effect and improving the cargo loading capacity of the semi-trailer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOTRUK HUBEI HUAWIN SPECIAL VEHICLE CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-06-09
Smart Images

Figure CN224335708U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semi-trailer technology, specifically to a fast widening locking structure for a flatbed semi-trailer platform. Background Technology
[0002] Traditional flatbed semi-trailer platforms often use telescopic brackets to widen the platform, but this traditional method usually has the following drawbacks: insufficient structural strength, inconvenient operation, and poor stability. Utility Model Content
[0003] The purpose of this utility model is to provide a fast widening locking structure for a flatbed semi-trailer platform that is high in strength, easy to operate, and has good stability, in order to solve the technical problems existing in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A quick-widening locking structure for a flatbed semi-trailer platform includes a widening platform and a locking mechanism. One end of the widening platform is hinged to the longitudinal beam of the semi-trailer frame, and the other end is locked to the longitudinal beam of the semi-trailer frame through the locking mechanism. The widening platform has two states: folded and unfolded.
[0006] When folded, the widened platform is stored inside the longitudinal beam of the semi-trailer frame and fits parallel to the web of the longitudinal beam of the semi-trailer frame.
[0007] When the platform is extended, it extends outside the longitudinal beams of the semi-trailer frame and is perpendicular to the web of the longitudinal beams of the semi-trailer frame.
[0008] Furthermore, the widened platform includes a fixed rod and a widening component. The upper and lower ends of the fixed rod are fixedly connected to the top plate and bottom plate of the semi-trailer frame longitudinal beam, respectively. One end of the widening component is rotatably sleeved on the fixed rod, and the other end is locked in place with the locking mechanism.
[0009] Furthermore, the widened member has a locking hole at one end near the locking mechanism that engages with the locking mechanism.
[0010] Furthermore, the locking mechanism includes a locking plate and a locking seat, the locking plate being hinged to the locking seat and the locking seat being fixed to the web of the longitudinal beam of the semi-trailer frame.
[0011] Furthermore, the lock plate has an elongated hole, and a pin is provided at one end of the lock seat away from the web of the semi-trailer frame longitudinal beam. The lock plate is sleeved on the pin through the elongated hole, and the lock plate can rotate up and down around the pin and move back and forth along the length of the lock seat.
[0012] Compared with the prior art, the advantages of this utility model are as follows: It cleverly utilizes the different movement states of the locking plate to quickly open and retract the widening platform, thereby widening the semi-trailer and meeting more cargo loading needs; when it is not necessary to increase the width of the semi-trailer, the widening platform can be retracted inside the longitudinal beam of the semi-trailer frame; when it is necessary to increase the width of the semi-trailer, the widening platform can be unfolded. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the description of the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of the quick-widening locking structure of the flatbed semi-trailer platform provided by this utility model when it is in a folded state;
[0015] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0016] Figure 3 This is a schematic diagram of the process when the fast widening locking structure of the flatbed semi-trailer platform provided by this utility model switches from a folded state to an unfolded state;
[0017] Figure 4 yes Figure 3 Enlarged view at point B in the middle;
[0018] Figure 5 This is a schematic diagram of the structure of the fast widening locking structure of the flatbed semi-trailer platform provided by this utility model when it is in the fully extended state;
[0019] Figure 6 yes Figure 5 Enlarged view at point C;
[0020] Figure 7 yes Figure 5 Enlarged view at point D;
[0021] Explanation of reference numerals in the attached drawings: 100, widened platform; 101, fixing rod; 102, widening component; 103, lock hole; 200, locking mechanism; 201, lock plate; 202, lock seat; 203, elongated hole; 204, pin; 300, semi-trailer frame longitudinal beam. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 this utility model according to the specific circumstances.
[0025] The present invention will be further described below with reference to the accompanying drawings:
[0026] See Figures 1 to 6 This utility model provides a quick widening and locking structure for a flatbed semi-trailer platform, including a widening platform 100 and a locking mechanism 200. One end of the widening platform 100 is hinged to the semi-trailer frame longitudinal beam 300, and the other end is locked to the semi-trailer frame longitudinal beam 300 through the locking mechanism 200. The widening platform 100 has two states: folded and unfolded. When the widening platform 100 is in the folded state, it is stored inside the semi-trailer frame longitudinal beam 300 and is parallel and close to the belly of the semi-trailer frame longitudinal beam 300. When the widening platform 100 is in the unfolded state, it extends outside the semi-trailer frame longitudinal beam 300 and is perpendicular to the belly of the semi-trailer frame longitudinal beam 300. At this time, the purpose of widening the semi-trailer can be achieved by laying wooden boards or other board-like objects on the widening platform 100.
[0027] Specifically, as one embodiment of this utility model: the widened platform 100 includes a fixed rod 101 and a widening component 102. The upper and lower ends of the fixed rod 101 are fixedly connected to the top plate and bottom plate of the semi-trailer frame longitudinal beam 300, respectively. One end of the widening component 102 is rotatably sleeved on the fixed rod 101, and the other end is locked in place with the locking mechanism 200. When the locking mechanism 200 is released, the widened platform 100 can rotate with the fixed rod 101 as the rotation axis to realize the unfolding operation of the widened platform 100. When the locking mechanism 200 is locked, the widened platform 100 can be retracted and fixed inside the semi-trailer frame longitudinal beam 300.
[0028] More specifically, in the above embodiment, a locking hole 103 is provided at the end of the widening member 102 near the locking mechanism 200, for locking engagement with the locking mechanism 200. The locking hole 103 facilitates the locking mechanism 200 passing through the widening member 102 to achieve a locking engagement. Specifically, when the locking mechanism 200 is inserted into the locking hole 103, the widening member 102 is locked; when the locking mechanism 200 is withdrawn from the locking hole 103, the widening member 102 is released.
[0029] Specifically, as one embodiment of the present utility model: the locking mechanism 200 includes a locking plate 201 and a locking seat 202, wherein the locking plate 201 is hinged to the locking seat 202, and the locking seat 202 is fixed to the web of the longitudinal beam 300 of the semi-trailer frame.
[0030] More specifically, in the above embodiment, the locking plate 201 is provided with an elongated hole 203, and the locking seat 20 is provided with a pin 204 at one end away from the belly of the semi-trailer frame longitudinal beam 300. The locking plate 201 is sleeved on the pin 204 through the elongated hole 203, and the locking plate 201 can rotate up and down around the pin 204 and can move back and forth along the length direction of the locking seat 202.
[0031] The working principle of the quick-widening locking structure for the flatbed semi-trailer platform provided by this utility model is as follows:
[0032] When there is no need to increase the width of the semi-trailer, the widening platform 100 is retracted within the semi-trailer frame longitudinal beam 300, and the widening platform 100 is temporarily locked inside the semi-trailer frame longitudinal beam 300 by the locking mechanism 200. (See reference...) Figure 1 and Figure 2 As shown, at this time, the locking plate 201 of the locking mechanism 200 will be in a vertically downward state under the action of gravity.
[0033] When it is necessary to increase the width of the semi-trailer, first rotate the locking plate 201 of the locking mechanism 200 to a horizontal position to facilitate the unfolding of the widening platform 100. (See reference...) Figure 3 and Figure 4As shown, then the locking plate 201 is moved backward while the widened platform 100 is unfolded outward until the widened platform 100 is fully unfolded, refer to Figure 5 and Figure 6 As shown, when the widened platform 100 is fully extended, wooden boards or other plank-like objects can be laid on the widened platform 100 to achieve the purpose of increasing the width of the semi-trailer.
[0034] Finally, it should be noted that the above description is only an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A quick-widening locking structure for a flatbed semi-trailer platform, characterized in that: It includes a widened platform (100) and a locking mechanism (200). One end of the widened platform (100) is hinged to the longitudinal beam (300) of the semi-trailer frame, and the other end is locked to the longitudinal beam (300) of the semi-trailer frame through the locking mechanism (200). The widened platform (100) has two states: folded and unfolded. When the widened platform (100) is folded, it is stored inside the semi-trailer frame longitudinal beam (300) and is parallel and close to the belly of the semi-trailer frame longitudinal beam (300); When the widened platform (100) is in the unfolded state, it extends outside the semi-trailer frame longitudinal beam (300) and is perpendicular to the belly of the semi-trailer frame longitudinal beam (300); The widened platform (100) includes a fixed rod (101) and a widening component (102). The upper and lower ends of the fixed rod (101) are fixedly connected to the top plate and bottom plate of the semi-trailer frame longitudinal beam (300) respectively. One end of the widening component (102) is rotatably sleeved on the fixed rod (101), and the other end is locked in place with the locking mechanism (200). The widening member (102) has a locking hole (103) at one end near the locking mechanism (200) that engages with the locking mechanism (200). The locking mechanism (200) includes a locking plate (201) and a locking seat (202). The locking plate (201) is hinged to the locking seat (202), and the locking seat (202) is fixed to the web of the longitudinal beam (300) of the semi-trailer frame. The locking plate (201) has an elongated hole (203). The locking seat (202) has a pin (204) at one end away from the longitudinal beam (300) of the semi-trailer frame. The locking plate (201) is sleeved on the pin (204) through the elongated hole (203). The locking plate (201) can rotate up and down around the pin (204) and can move back and forth along the length of the locking seat (202).