Connecting device for trailer and trailer

Abstract

The utility model discloses a connecting device for a trailer and the trailer, and relates to the technical field of semitrailers. The connecting piece comprises a first transverse connecting piece, a second transverse connecting piece and a third transverse connecting piece, shaft seats are symmetrically installed on the first transverse connecting piece, the shaft seats are fixedly connected with the first transverse connecting piece, the second transverse connecting piece is sleeved with the two shaft seats, and the first transverse connecting piece and the second transverse connecting piece are rotationally connected through the shaft seats; a first fixing piece is arranged at the top end of the third connecting piece, an inserting groove is formed in the middle of the first fixing piece, and an inserting plate used in cooperation with the inserting groove is arranged at the bottom end of the second transverse connecting piece. By means of the arrangement of the shaft seats and the fixing pieces, stable connection among the first transverse connecting piece, the second transverse connecting piece and the third transverse connecting piece is guaranteed, the design ensures that the connecting pieces cannot loosen or fall off due to vibration or external force in the use process of the trailer, and therefore the structural stability and safety of the whole trailer are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a connecting device for trailers and a trailer. Background Art

[0002] Semi-trailers are usually connected to tractors through connecting devices. However, the existing connecting devices are not convenient enough to connect, and the connecting devices of semi-trailers are easily impacted during driving, resulting in a decrease in the driving stability of semi-trailers, and accelerating the damage of connecting parts. After damage, it will lead to an increase in use costs. Therefore, it is necessary to design a connecting device for trailers to solve this problem. Summary of the Utility Model

[0003] To achieve the above object, the utility model provides the following technical solution: A connecting device for trailers and a trailer, including a first transverse connecting member, a second transverse connecting member, and a third transverse connecting member. Axle seats are symmetrically installed on the first transverse connecting member, and are fixedly connected to the first transverse connecting member. The two axle seats are sleeved on the second transverse connecting member, and the first transverse connecting member and the second transverse connecting member are rotatably connected through the axle seats; a first fixing member is provided at the top end of the third connecting member, a slot is provided in the middle of the first fixing member, a plug board for cooperating with the slot is provided at the bottom end of the second transverse connecting member, the number of the first fixing members is three, and the three first fixing members are evenly arranged on the third transverse connecting member. The slot and the plug board are fixedly connected by bolts. A second fixing member is provided on one side of the third transverse connecting member, the number of the second fixing members is three, and the three second fixing members are evenly arranged on the third transverse connecting member. Slots are also provided on the second fixing members. A connecting rod is provided on the first transverse connecting member, and a connecting ring is provided at the end of the connecting rod.

[0004] Preferably, positioning seats are symmetrically provided on the first transverse connecting member. Semi-circular grooves are respectively provided at the top ends of the two positioning seats, and the two semi-circular grooves are symmetrically arranged. The connecting rod is arranged between the two semi-circular grooves by the two positioning seats. A fixing sleeve is provided at the middle position of the first transverse connecting member. The connecting rod is arranged inside the fixing sleeve, and the connecting rod is not fixedly connected to the first transverse connecting member. A limiting sleeve is also sleeved on the connecting rod.

[0005] Preferably, a limiting rod is provided at the bottom end of the third transverse connecting member, and the limiting rod is rotatably connected to the third transverse connecting member through a rotating connecting member.

[0006] Preferably, limiting rings are symmetrically sleeved in the middle of the second transverse connecting member. The limiting rings include an upper semi-circle and a lower semi-circle, and the two sides of the upper semi-circle and the lower semi-circle are respectively fixedly connected by bolts.

[0007] Beneficial effects: Compared with the prior art, through the arrangement of the shaft seat and the fixing parts, the present utility model ensures the stable connection between the first, second, and third transverse connecting parts. This design ensures that during the use of the trailer, the connecting parts will not loosen or fall off due to vibration or external forces, thereby enhancing the overall structural stability and safety of the trailer; through the design of the limiting sleeve, limiting rod, and limiting ring, the limiting and protecting functions of the connecting parts during use are realized. These limiting devices can prevent the connecting parts from moving or rotating beyond the designed range, avoiding possible damage, and thus extending the service life of the trailer connecting parts; structures such as bolt connection and slot fixing make the installation and maintenance of the trailer connecting device simple and convenient. This design not only improves the assembly efficiency but also reduces the time and cost consumption during maintenance. Brief Description of the Drawings

[0008] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0009] Figure 2 It is a three-dimensional structural schematic diagram of another perspective of the present utility model.

[0010] Figure 3 It is a top view of the present utility model.

[0011] In the drawings: 1 - the first transverse connecting part, 2 - the second transverse connecting part, 3 - the third transverse connecting part, 4 - the shaft seat, 5 - the first fixing part, 6 - the second fixing part, 7 - the connecting rod, 8 - the positioning seat, 9 - the fixing sleeve, 10 - the limiting sleeve, 11 - the limiting rod, 12 - the rotating connecting part, 13 - the limiting ring, 14 - the connecting ring. Specific Embodiments

[0012] The technical solutions of this patent will be further described in detail below in conjunction with specific embodiments.

[0013] Embodiment

[0014] Please refer to the attached drawings of the specification. In an embodiment of the present utility model, a connecting device for a trailer and a trailer are provided. The connecting device includes a first transverse connecting member 1, a second transverse connecting member 2, and a third transverse connecting member 3. Axle seats 4 are symmetrically installed on the first transverse connecting member 1, and the axle seats 4 are fixedly connected to the first transverse connecting member 1. The two axle seats 4 are sleeved on the second transverse connecting member 2, and the first transverse connecting member 1 and the second transverse connecting member 2 are rotatably connected through the axle seats 4. A first fixing member 5 is provided at the top of the third connecting member 3. A slot is provided in the middle of the first fixing member 5. A plug board for cooperating with the slot is provided at the bottom of the second transverse connecting member 2. The number of the first fixing members 5 is three, and the three first fixing members 5 are evenly arranged on the third transverse connecting member 3. The slot and the plug board are fixedly connected by bolts. A second fixing member 6 is provided on one side of the third transverse connecting member 3. The number of the second fixing members 6 is three, and the three second fixing members 6 are evenly arranged on the third transverse connecting member 3. A slot is also provided on the second fixing member 6. A connecting rod 7 is provided on the first transverse connecting member 1, and a connecting ring 8 is provided at the end of the connecting rod 7.

[0015] Positioning seats 8 are symmetrically provided on the first transverse connecting member 1. Semi-circular grooves are respectively provided at the tops of the two positioning seats 8, and the two semi-circular grooves are symmetrically arranged. The connecting rod 7 is arranged between the two semi-circular grooves by the two positioning seats 8. A fixed sleeve 9 is provided at the middle position of the first transverse connecting member 1. The connecting rod 7 is arranged inside the fixed sleeve 9, and the connecting rod 7 is not fixedly connected to the first transverse connecting member 1. A limiting sleeve 10 is also sleeved on the connecting rod 7.

[0016] A limiting rod 11 is provided at the bottom of the third transverse connecting member 3, and the limiting rod 11 is connected to the third transverse connecting member 3 through a rotating connecting member 12.

[0017] Limiting rings 13 are symmetrically sleeved in the middle of the second transverse connecting member 2. The limiting rings 13 include an upper semi-circle and a lower semi-circle, and the two sides of the upper semi-circle and the lower semi-circle are fixedly connected by bolts respectively.

[0018] Working principle: Axle seats 4 are installed on the first transverse connecting member 1, and the axle seats are fixedly connected to the first transverse connecting member 1. The first transverse connecting member 1 is connected to the second transverse connecting member 2 through the axle seats and can rotate under the rotational connection of the axle seats. Three first fixing members 5 are installed at the top of the third transverse connecting member 3. Each first fixing member has a slot for fixing the plug board, and they are fixedly connected by bolts. Three second fixing members 6 are also provided on one side of the third transverse connecting member 3, and each second fixing member also has a slot. A connecting rod 7 is provided on the first transverse connecting member 1, and a connecting ring 8 is provided at the end of the connecting rod 7, which is used for the traction or connection of the trailer. The fixed sleeve 9 and the limiting sleeve 10 help limit the movement range of the connecting rod to prevent it from exceeding the designed position.

[0019] In summary, through the settings of the shaft seat and the fixing member, the stable connection between the first, second, and third transverse connecting members is ensured. This design ensures that during the use of the trailer, the connecting members will not loosen or fall off due to vibration or external forces, thereby enhancing the overall structural stability and safety of the trailer. Through the design of the limiting sleeve, the limiting rod, and the limiting ring, the limiting and protection functions of the connecting members during use are realized. These limiting devices can prevent the connecting components from moving or rotating beyond the designed range, avoiding possible damage, and thus extending the service life of the trailer connecting members. Structures such as bolt connection and slot fixing make the installation and maintenance of the trailer connecting device easy to operate. This design not only improves the assembly efficiency but also reduces the time and cost consumption during maintenance. The utility model optimizes the structural stability, positioning accuracy, and use safety of the trailer connecting device, making it more suitable for the application requirements during long-term transportation and under complex road conditions.

[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

Claims

1. A trailer connection device and a trailer, characterized in that: The invention comprises a transverse connecting member 1 (1), a transverse connecting member 2 (2) and a transverse connecting member 3 (3), wherein the transverse connecting member 1 (1) is symmetrically provided with an axle seat (4), the axle seat (4) and the transverse connecting member 1 (1) are fixedly connected, the two axle seats (4) are sleeved on the transverse connecting member 2 (2), and the transverse connecting member 1 (1) and the transverse connecting member 2 (2) are rotatably connected via the axle seat (4); a fixing member 1 (5) is provided at the top end of the connecting member 3 (3), a slot is provided in the middle of the fixing member 1 (5), and a matching slot is provided at the bottom end of the transverse connecting member 2 (2) The plug plate used has three fixing members (5) and is evenly arranged on the transverse connecting member (3). The slot and the plug plate are fixedly connected by bolts. A fixing member (6) is arranged on one side of the transverse connecting member (3). The fixing member (6) is three in number and is evenly arranged on the transverse connecting member (3). The fixing member (6) is also provided with a slot. A connecting rod (7) is arranged on the transverse connecting member (1), and a connecting ring (14) is arranged at the end of the connecting rod (7).

2. A trailer connection device and a trailer according to claim 1, characterized in that: The transverse connecting member 1 (1) is symmetrically provided with positioning seats (8), the top ends of the two positioning seats (8) are respectively provided with semicircular grooves, the two semicircular grooves are symmetrically arranged, the two positioning seats (8) arrange the connecting rod (7) between the two semicircular grooves, a fixing sleeve is arranged in the middle position of the transverse connecting member 1 (1), the connecting rod (7) is arranged inside the fixing sleeve (9), and the connecting rod (7) is not fixedly connected to the transverse connecting member 1 (1), and a limiting sleeve (10) is also sleeved on the connecting rod (7).

3. A trailer connection device and a trailer according to claim 1, characterized in that: A limiting rod (11) is provided at the bottom end of the third transverse connecting member (3), and the limiting rod (11) is connected to the third transverse connecting member (3) via a rotating connecting member (12).

4. A trailer connection device and a trailer according to claim 1, characterized in that: A limiting ring (13) is symmetrically sleeved in the middle of the second transverse connecting member (2), wherein the limiting ring (13) comprises an upper semicircle and a lower semicircle, and the upper semicircle and the lower semicircle are fixedly connected at both sides by bolts.

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