Modular connection device for the extension of a single trailer into a double trailer

Abstract

The utility model relates to trailer connection technical field, specifically disclose a kind of modularization connecting device of single trailer can be expanded into double trailer, solve the problem that traditional fixed type traction structure cannot dynamically adjust trailer quantity.Module modularization connecting device includes connecting seat, saddle and connecting car;Saddle is set on connecting seat, and connecting seat can be received in the accommodating cavity of main trailer tail portion;When needing to expand vice trailer, connecting seat is stretched out from accommodating cavity, and connecting car is connected with connecting seat by saddle, so that vice trailer is linked with main trailer through connecting car.This device uses modularization design, and through the quick connection structure of storable connecting seat, the flexible expansion of single trailer to double trailer is realized, and the adaptability, operation efficiency and resource utilization of transportation system are significantly improved.

Description

Technical Field

[0001] This utility model belongs to the field of trailer technology, specifically a modular connection device that can be expanded from a single trailer to a double trailer. Background Technology

[0002] With the rapid development of the logistics and transportation industry, trailer transportation systems are constantly evolving towards modularity and multi-purpose applications, placing higher demands on the flexibility and scalability of trailer connection structures. Traditional trailer connection methods are mostly fixed single-trailer traction structures, which make it difficult to flexibly adjust the number of trailers according to changes in transportation tasks, leading to problems such as low transportation efficiency and unreasonable resource allocation. Especially in road freight and special transportation scenarios, the diversity and dynamic changes in transportation demands make the limitations of existing connection methods increasingly prominent. Therefore, there is an urgent need for a modular connection device that can easily expand from a single trailer to a double trailer, enabling rapid assembly and functional switching, and improving the adaptability and operational efficiency of the transportation system. Utility Model Content

[0003] In view of the technical problems existing in the prior art, the purpose of this utility model is to provide a modular connection device that can expand a single trailer into a double trailer, aiming to realize the flexible expansion of the number of trailers, improve the adaptability and operational efficiency of the transportation system, and at the same time ensure the safety and versatility of the connection structure.

[0004] This utility model provides the following technical solution: a modular connection device that can be expanded from a single trailer to a double trailer, including a connecting seat, a saddle seat, and a connecting vehicle;

[0005] The saddle is mounted on the connecting seat, which can be stored in the receiving cavity at the rear of the main trailer. When the main trailer needs to extend into a secondary trailer, the connecting seat extends out of the receiving cavity under the action of external force and is then fixed by a fixing device. The connecting vehicle is connected to the connecting seat through the saddle, so that the secondary trailer is connected to the main trailer through the connecting vehicle.

[0006] Furthermore, the fixing device is a bolt, the connecting seat is provided with multiple threaded holes, the main trailer is provided with a connecting hole, and the bolt passes through the connecting hole and is threadedly connected to the threaded hole.

[0007] Furthermore, the saddle includes a steering shaft and a connecting plate, the connecting vehicle and the connecting plate are detachably connected, and the steering shaft allows the connecting vehicle to rotate relative to the main trailer.

[0008] Furthermore, there are two saddles.

[0009] Furthermore, the saddle also includes a connecting assembly, and the connecting plate is provided with a circular groove for accommodating the connecting assembly, and a limiting ring is provided in the circular groove;

[0010] The connecting assembly includes a T-shaped rod, a coil spring, and a spring. The coil spring is sleeved on the T-shaped rod, and the spring is located between the T-shaped rod and the limiting ring.

[0011] Furthermore, the connecting vehicle is provided with a row of holes, which includes longitudinal through holes and multiple transverse blind holes, with the transverse blind holes arranged perpendicular to the longitudinal through holes;

[0012] The T-shaped rod can pass through the longitudinal through hole and rotate to engage with the transverse blind hole.

[0013] Furthermore, the T-shaped rod includes a bottom connecting seat, a rod body, and a handle. The spring is disposed between the bottom connecting seat and the limiting ring. The coil spring is sleeved on the outside of the rod body of the T-shaped rod. One end of the coil spring is connected to the circular groove, and the other end is connected to the rod body. The limiting ring restricts the axial displacement of the bottom connecting seat.

[0014] Furthermore, a first magnet is provided on the side wall of the circular groove, and a second magnet is provided on the rod body;

[0015] The first magnet and the second magnet have opposite magnetic properties and are used to fix the position of the T-shaped rod in the circular groove.

[0016] Furthermore, the present invention also proposes a dual trailer, including a main trailer, a connecting vehicle, and an auxiliary trailer, and also includes the modular connecting device as described above; the connecting vehicle is connected to the connecting seat of the main trailer via a saddle, and the auxiliary trailer is fixed to the connecting vehicle.

[0017] This utility model can achieve at least one of the following beneficial effects:

[0018] (1) The connecting device itself is a modular structure that can be conveniently stored in the rear cavity of the main trailer without affecting the structural settings of the main trailer. Furthermore, without damaging the existing main structure of the trailer, the existing trailer can be easily modified. By setting up the modular connecting device, when the main trailer needs to be expanded, the connecting seat can be directly extended from the rear cavity of the vehicle and connected to the connecting vehicle through the saddle, thereby connecting the auxiliary trailer to the main trailer. This achieves rapid expansion from a single trailer to a double trailer, significantly improving the flexibility and adaptability of the transportation system.

[0019] (2) With the setting of multiple threaded holes, bolts can be used to quickly position and fix the connecting seat to the main trailer, and precise adjustments can be made according to actual needs, which enhances the convenience of the device.

[0020] (3) By matching the T-shaped rod in the connecting assembly with the row of holes on the connecting vehicle, the connecting plate and the connecting vehicle can be quickly and detachably connected. Due to the setting of the reset coil spring and spring, compared with the bolt connection, the stability of the connection can be guaranteed even when the connecting vehicle rotates frequently.

[0021] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0022] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0023] Figure 1 This is a schematic diagram of the modular connection device of this utility model being stored at the rear of the main trailer;

[0024] Figure 2 This is a schematic diagram of the overall structure of the modular connection device of this utility model when a single trailer is expanded into a double trailer;

[0025] Figure 3 This is a top view of the modular connection device of this utility model being stored at the rear of the main trailer;

[0026] Figure 4 This is a schematic diagram of the structure of the connector of this utility model;

[0027] Figure 5 This is a side view of the saddle and connecting assembly of this utility model;

[0028] Figure 6 This is a partial enlarged view of the saddle and connecting components of this utility model when they are not installed;

[0029] Figure 7 This is a partial enlarged view of the saddle and connecting components of this utility model during the installation process;

[0030] Figure 8 This is a schematic diagram of the hole structure of the connecting vehicle of this utility model.

[0031] In the picture:

[0032] 1. Main trailer; 11. Connecting hole; 12. Bolt; 2. Connecting vehicle; 21. Drain hole; 211. Longitudinal through hole; 212. Transverse blind hole; 3. Sub-trailer; 4. Connecting seat; 41. Threaded hole; 42. Electrical connector; 43. Air connector; 5. Saddle; 51. Steering shaft; 52. Connecting plate; 521. First magnet; 522. Limiting ring; 53. Connecting assembly; 531. T-shaped rod; 5311. Bottom connecting seat; 5312. Rod body; 5313. Handle; 532. Coil spring; 533. Spring; 534. Second magnet. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0034] Example 1:

[0035] This utility model provides a modular connection device that can expand a single trailer into a double trailer, and its specific implementation is described in conjunction with the appendix. Figure 1 To be continued Figure 8 Please provide a detailed explanation. For example... Figure 1 and Figure 2 As shown, the connecting device includes a connecting seat 4, a saddle 5, and a connecting vehicle 2. The saddle 5 is mounted on the connecting seat 4, which is housed in the receiving cavity at the rear of the main trailer 1. When the main trailer 1 needs to extend the auxiliary trailer 3, the connecting seat 4 extends out of the receiving cavity under the external force of the operator or a hydraulic cylinder, and is then fixed by a fixing device. The connecting vehicle 2 is connected to the connecting seat 4 via the saddle 5, and the auxiliary trailer 3 is connected to the main trailer 1 via the connecting vehicle 2.

[0036] The connecting device itself is an integrated modular structure that can be easily stored in the rear cavity of the main trailer 1 without affecting the structural configuration of the main trailer. Furthermore, without damaging the existing main trailer structure, the existing trailer can be easily modified. By setting up the modular connecting device, when the main trailer 1 needs to be expanded, the connecting seat 4 can be directly extended from the rear cavity and connected to the connecting vehicle 2 through the saddle 5, thereby connecting the auxiliary trailer 3 to the main trailer 1. This achieves rapid expansion from a single trailer to a double trailer, significantly improving the flexibility and adaptability of the transportation system, solving the problem of the limited number of trailers in the existing technology, and is suitable for various vehicle types and non-standard transportation environments.

[0037] like Figure 3 As shown, the fixing device can be a bolt 11, the connecting seat 4 is provided with multiple threaded holes 41, the main trailer 1 is provided with a connecting hole, and the bolt 11 is threadedly connected to the threaded hole 41 through the connecting hole.

[0038] Furthermore, to facilitate the extension and retraction of the connecting seat 4, a slider is provided on the bottom surface of the connecting seat 4, and a corresponding slide rail is provided in the receiving cavity of the main trailer 1, allowing the operator to manually extend the connecting seat 4 from the receiving cavity of the main trailer 1. Alternatively, a hydraulic cylinder assembly can be installed in the receiving cavity of the main trailer 1, with the piston rod of the hydraulic cylinder fixedly connected to the connecting seat 4. When the connecting seat 4 needs to extend, the piston rod of the hydraulic cylinder is driven, allowing the connecting seat 4 to extend to a fixed position, improving automation. The specific structure and connection method of the hydraulic cylinder adopt conventional settings of existing technology in this field and will not be described in detail here.

[0039] Furthermore, the saddle includes a steering shaft 51 and a connecting plate 52. The connecting vehicle 2 and the connecting plate 52 are detachably connected, and the detachable connection can be a bolt connection. The steering shaft 51 is used for the connecting vehicle 2 to rotate relative to the main trailer 1.

[0040] Furthermore, there are two saddles.

[0041] With multiple threaded holes 41, the connecting seat can be quickly positioned and fixedly connected to the main trailer with bolts 11, and can be precisely adjusted according to actual needs, enhancing the convenience of the device.

[0042] Example 2:

[0043] like Figure 4 As shown, based on Embodiment 1, the connecting seat 4 is also equipped with an electrical connector 42 and an air connector 43, and the auxiliary trailer 3 is equipped with an electrical line 31 and an air pipe 32. The electrical connector 42 and the air connector 43 are used to transmit power and brake air pressure, respectively. When the auxiliary trailer 3 is connected to the main trailer 1, the electrical line 31 and the air pipe 32 are connected to the electrical connector 42 and the air connector 43, respectively, so that the auxiliary trailer 3 can connect to the electrical and air circuits of the main trailer 1, realizing the rapid connection of the control system. This allows the signal of the auxiliary trailer 3 to be transmitted to the main trailer 1 and finally to the central control system of the trailer's tractor, so that the driver can monitor the connection and operation status of the auxiliary trailer 3 in real time. This design not only improves the safety of trailer coupling but also enhances the intelligence level of the system.

[0044] Example 3:

[0045] Based on Embodiment 1 and Embodiment 2, as Figures 5-7As shown, the detachable connection between the connecting vehicle 2 and the connecting plate 52 can be achieved through the connecting assembly 53. Specifically, the connecting plate 52 is provided with a circular groove for accommodating the connecting assembly 53, and a limiting ring 522 is provided in the circular groove. The connecting assembly 53 includes a T-shaped rod 531, a coil spring 532, and a spring 533. The coil spring 532 is sleeved on the T-shaped rod 531, with one end connected to the circular groove and the other end connected to the T-shaped rod 531. The spring 533 is located between the T-shaped rod 531 and the limiting ring 522 and is used to reset the T-shaped rod after it is pulled upward.

[0046] like Figure 8 As shown, the connecting vehicle 2 is provided with a row of holes 21, which includes a longitudinal through hole 211 and a plurality of transverse blind holes 212. The transverse blind holes 212 are arranged perpendicular to the longitudinal through hole 211. The T-shaped rod 531 can pass through the longitudinal through hole 211 and rotate into the transverse blind hole 212 to realize the detachable connection between the connecting plate 52 and the connecting vehicle 2.

[0047] Furthermore, such as Figure 6 and Figure 7 As shown, the T-shaped rod 531 includes a bottom connecting seat 5311, a rod body 5312, and a handle 5313. A spring 533 is disposed between the bottom connecting seat 5311 and a limiting ring 522. The limiting ring 522 restricts the axial displacement of the bottom connecting seat 5311. A coil spring 532 is sleeved on the outside of the rod body 5312 of the T-shaped rod 531, with one end connected to a circular groove and the other end connected to the rod body 5312.

[0048] Furthermore, a first magnet 521 is provided on the side wall of the circular groove, and a second magnet 534 is provided on the rod body 5312;

[0049] The first magnet 521 and the second magnet 534 have opposite magnetic properties and are used to fix the position of the T-shaped rod 531 in the circular groove.

[0050] In practical use, the operator only needs to rotate the T-shaped rod 531, which is in the horizontal position of the handle 5313, so that the first magnet 521 and the second magnet 534 attract each other, and fix the T-shaped rod 531 in the vertical position. Then, the T-shaped rod 531 is passed through the vertical through hole 211 in the row hole 21 provided on the connecting car 2, and the connection position is selected according to actual needs. Then, the operator rotates the T-shaped rod 531 in the opposite direction so that the magnets no longer attract each other. Under the reset action of the coil spring 532 and the spring 533, the T-shaped rod 531 falls into the matching horizontal blind hole 212, so that the connecting plate 52 and the connecting car 2 are fixedly connected.

[0051] By cooperating with the T-shaped rod 531 in the connecting assembly and the row of holes 212 on the connecting carriage 2, a quick and detachable connection can be achieved between the connecting plate 52 and the connecting carriage 2. Due to the setting of the reset coil spring 532 and spring 533, compared with the bolt connection, the connection stability can be guaranteed even when the connecting carriage rotates frequently.

[0052] The specific working process of this utility model is described in detail below:

[0053] Since the carrying capacity of a single trailer is limited, it is necessary to expand it into a double trailer. The operation steps are as follows: First, the driver or other operators extend the connecting device stored behind the main trailer and fix it to the main trailer with bolts. Then, the connecting vehicle is connected to the saddle in the connecting device. Finally, the auxiliary trailer is connected to the connecting vehicle. At this time, the single trailer can be quickly expanded into a multi-trailer.

[0054] When electrical connector 42 and air connector 43 are installed, the driver can confirm the connection status of electrical plug 31 and brake air pipe connector 32 through the central control system of the tractor. After confirming that everything is correct, the transportation task can be started.

[0055] If you need to switch back to single trailer mode, simply reverse the order of operations to quickly separate the sub-trailer from the tractor.

[0056] Example 4:

[0057] Based on Embodiments 1 to 3, the connection between the sub-trailer 3 and the connecting vehicle 2 can also adopt the saddle and perforation structure of Embodiment 3, which will not be repeated here. Depending on the needs, the double trailer can also be modified into a triple trailer or other multi-trailer configuration.

[0058] Example 5:

[0059] Based on Embodiments 1 to 4, a dual trailer is also proposed, including a main trailer 1, a connecting vehicle 2 and an auxiliary trailer 3, and also including the modular connecting device as described above; the connecting vehicle 2 is connected to the connecting seat 4 of the main trailer 1 through a saddle 5, and the auxiliary trailer 3 is fixed to the connecting vehicle 2.

[0060] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular connection device that can expand a single trailer into a double trailer, characterized in that: Includes connecting seat (4), saddle (5) and connecting car (2); The saddle (5) is mounted on the connecting seat (4), which can be stored in the receiving cavity at the rear of the main trailer (1); When the main trailer (1) needs to extend the auxiliary trailer (3), the connecting seat (4) extends out of the receiving cavity under the action of external force and is then fixed by the fixing device. The connecting vehicle (2) is connected to the connecting seat (4) through the saddle (5), so that the auxiliary trailer (3) is connected to the main trailer (1) through the connecting vehicle (2).

2. The modular connection device according to claim 1, characterized in that: The fixing device is a bolt (11), the connecting seat (4) is provided with multiple threaded holes (41), the main trailer (1) is provided with a connecting hole, and the bolt (11) passes through the connecting hole and is threadedly connected to the threaded hole (41).

3. The modular connection device according to claim 1, characterized in that: The saddle (5) includes a steering shaft (51) and a connecting plate (52). The connecting vehicle (2) is detachably connected to the connecting plate (52). The steering shaft (51) allows the connecting vehicle (2) to rotate relative to the main trailer (1).

4. The modular connection device according to claim 3, characterized in that: The saddle (5) is provided in two parts.

5. The modular connection device according to claim 3, characterized in that: The saddle (5) also includes a connecting component (53), and the connecting plate (52) is provided with a circular groove for accommodating the connecting component (53), and a limiting ring (522) is provided in the circular groove; The connecting assembly (53) includes a T-shaped rod (531), a coil spring (532), and a spring (533). The coil spring (532) is sleeved on the T-shaped rod (531), and the spring (533) is located between the T-shaped rod (531) and the limiting ring (522).

6. The modular connection device according to claim 5, characterized in that: The connecting vehicle (2) is provided with a row of holes (21), which includes a longitudinal through hole (211) and a plurality of transverse blind holes (212). The transverse blind holes (212) are arranged perpendicular to the longitudinal through hole (211). The T-shaped rod (531) can pass through the longitudinal through hole (211) and be rotated into the transverse blind hole (212).

7. The modular connection device according to claim 5, characterized in that: The T-shaped rod (531) includes a bottom connecting seat (5311), a rod body (5312), and a handle (5313). The spring (533) is located between the bottom connecting seat (5311) and the limiting ring (522). The coil spring (532) is sleeved on the outside of the rod body (5312) of the T-shaped rod (531). One end of the coil spring (532) is connected to the circular groove, and the other end is connected to the rod body (5312). The limiting ring (522) restricts the axial displacement of the bottom connecting seat (5311).

8. The modular connection device according to claim 7, characterized in that: The sidewall of the circular groove is provided with a first magnet (521), and the rod (5312) is provided with a second magnet (534); The first magnet (521) and the second magnet (534) have different magnetic properties and are used to fix the position of the T-shaped rod (531) in the circular groove.

9. The modular connection device according to any one of claims 1-8, characterized in that: The connector (4) is provided with an electrical connector (42) and a pneumatic connector (43).

10. A double trailer, comprising a main trailer (1), a connecting vehicle (2), and a secondary trailer (3), characterized in that: It also includes the modular connection device as described in any one of claims 1-9; The connecting vehicle (2) is connected to the connecting seat (4) of the main trailer (1) via the saddle (5), and the auxiliary trailer (3) is fixed to the connecting vehicle (2).

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