Automatic covering device for trailer

Abstract

The utility model relates to auxiliary equipment for a trailer, in particular to an automatic covering device for the trailer, which comprises tarpaulin, a motor, a motor support, an L-shaped frame and a tension device, the motor support is arranged at the tail of the trailer, the motor is arranged on the motor support, and the motor retracts and releases the tarpaulin through a rotating shaft. The starting end of the tarpaulin is connected with one end of the L-shaped frame, the other end of the L-shaped frame is movably arranged on the trailer body, and the tension device is used for pulling the L-shaped frame when the motor releases the tarpaulin, so that the L-shaped frame is turned over, and the tarpaulin covers the trailer carriage. The motor drives the rotating shaft to wind and unwind the tarpaulin, and the pulling device is matched to pull the L-shaped frame to turn over, so that the tarpaulin can automatically cover the trailer carriage, the covering efficiency is greatly improved, and the risk of manual operation is reduced.

Description

Technical Field

[0001] This utility model relates to auxiliary equipment for trailers, and more particularly to an automatic trailer covering device. Background Technology

[0002] Cargo covering is an essential part of trailer transportation, primarily to protect goods from environmental damage such as wind, rain, and sun, ensuring their safe and intact arrival at their destination. However, existing trailer covering methods have many shortcomings.

[0003] Traditionally, covering trailers has relied mainly on manual ladders and the collaborative efforts of multiple people. This process requires workers to climb to the top of the trailer, manually unfold and secure the tarpaulin, a time-consuming, labor-intensive, and inefficient process. The difficulty and intensity of working at height increase significantly, especially when the cargo load is large and the trailer is high.

[0004] Furthermore, manual covering methods pose serious safety risks. Workers at heights are at risk of falls or other accidents if they are not careful, posing a serious threat to their personal safety. Additionally, the uncontrollable nature of manual operation can lead to problems such as the tarpaulin being pulled too hard or not being securely fixed, further increasing the operational risks.

[0005] Furthermore, manual covering cannot guarantee ideal coverage every time. Due to the variability and limitations of manual operation, problems such as incomplete covering and curled corners often occur, affecting the protective performance of the goods. These problems may not only lead to damage to the goods during transportation but also pose a threat to the driving safety of the trailer. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an automatic trailer covering device. The device uses a motor-driven rotating shaft to wind and unwind the tarpaulin, and a pulling device to pull the L-shaped frame to rotate, so that the tarpaulin can automatically cover the trailer body, thereby improving covering efficiency, reducing operational risks, and ensuring the covering effect.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An automatic trailer covering device includes a tarpaulin, a motor, a motor bracket, an L-shaped frame, and a pulling device. The motor bracket is located at the rear of the trailer, and the motor is mounted on the motor bracket. The motor retracts and extends the tarpaulin via a rotating shaft. The starting end of the tarpaulin is connected to one end of the L-shaped frame, and the other end of the L-shaped frame is movably mounted on the trailer body. The pulling device is used to pull the L-shaped frame when the motor extends the tarpaulin, causing the L-shaped frame to flip, thereby covering the trailer body with the tarpaulin.

[0009] In some embodiments, the tensioning device is a tension spring, one end of which is connected to the trailer body via a first hook, and the other end of which is connected to an L-shaped frame via a second hook.

[0010] In some embodiments, the pulling device includes a winch, a cable, and a fixed pulley. The winch is mounted on the trailer body, and the fixed pulley is mounted on the trailer cargo box. One end of the cable is wound around the winch, and the other end passes over the fixed pulley and is fixedly connected to the L-shaped frame. The winch is used to pull the L-shaped frame by winding the cable when the motor releases the tarpaulin, causing the L-shaped frame to flip, thereby covering the trailer cargo box with the tarpaulin.

[0011] In some embodiments, the motor bracket is provided with support rods, which are located on both sides of the motor and are used to support the tarpaulin.

[0012] In some embodiments, the system further includes spring locks disposed on both sides of the trailer body, with the other end of the L-shaped frame hinged to the spring locks on both sides of the trailer body.

[0013] In some embodiments, the spring lock includes a frame, one side wall of which is disposed on the trailer body, and the other side wall is hinged to the other end of the L-shaped frame; a lever passes through the frame, and a spring is fitted on the lever. When the L-shaped frame is flipped into place, the lever can be springed into the round hole of the L-shaped frame under the action of the spring force to lock the L-shaped frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model achieves automatic tarpaulin deployment and retraction through the cooperation of a motor and a rotating shaft. The tension device enables the L-shaped frame to automatically rotate when the motor releases the tarpaulin, thereby automatically covering the trailer cargo box with the tarpaulin, greatly improving covering efficiency and reducing operational risks.

[0016] 2. The support rods on the motor bracket are used to support the tarpaulin, ensuring the stability and flatness of the tarpaulin during the covering process.

[0017] 3. The spring lock not only provides a flexible installation position for the L-shaped frame, allowing it to be moved and installed on the trailer, but also locks the L-shaped frame after it is flipped over, ensuring that the tarpaulin is not easily blown away by the wind after covering the trailer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one embodiment of the automatic trailer covering device of this utility model in the tarpaulin covering state;

[0019] Figure 2This is a schematic diagram of an embodiment of the automatic trailer covering device of this utility model in the state of the tarpaulin being rolled up;

[0020] Figure 3 This is a schematic diagram of another embodiment of the automatic trailer covering device of this utility model in the tarpaulin covering state;

[0021] Figure 4 This is a schematic diagram of another embodiment of the automatic trailer covering device of this utility model in the tarpaulin rolled-up state;

[0022] Figure 5 for Figure 1 A magnified view of a section at point A;

[0023] Figure 6 for Figure 1 A magnified view of section B;

[0024] Figure 7 This utility model provides an L-shaped frame.

[0025] Figure 8 This is another L-shaped frame of this utility model.

[0026] The components are: 1. Tarpaulin; 2. Motor; 3. Motor bracket; 31. Shaft; 32. Support rod; 4. L-shaped frame; 41. L-shaped frame; 42. Round hole; 51. First hook; 52. Tension spring; 53. Second hook; 61. Winch; 62. Cable; 63. Fixed pulley; 7. Vehicle body; 71. Carriage; 8. Spring lock; 81. Frame; 82. Spring; 83. Lever. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments.

[0028] In the description of the embodiments of this utility model, 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. Furthermore, the terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0029] See Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 This utility model provides an automatic trailer covering device, including a tarpaulin 1, a motor 2, a motor bracket 3, an L-shaped frame 4 / 41, and a tensioning device. The motor bracket 3 is located at the rear of the trailer, specifically on the bumper or other components at the rear of the trailer. The motor 2 is mounted on the motor bracket 3. The motor 2 winds and unwinds the tarpaulin 1 via a rotating shaft 31. The starting end of the tarpaulin 1 is connected to one end of the L-shaped frame 4 / 41, and the other end of the L-shaped frame 4 / 41 is movably mounted on the trailer body 7. The tensioning device pulls the L-shaped frame 4 / 41 when the motor 2 releases the tarpaulin 1, causing the L-shaped frame 4 / 41 to flip, thereby covering the trailer body 71 with the tarpaulin 1. Specifically, the tensioning device is a tension spring 52. One end of the tension spring 52 is connected to the trailer body 7 via a first hook 51, and the other end of the tension spring 52 is connected to the L-shaped frame 4 / 41 via a second hook 53.

[0030] It should be noted that the other end of the L-shaped frame 4 / 41 can be movably set in various ways on the trailer body 7.

[0031] The first method is through hinge holes, meaning that hinge holes are provided on both sides of the trailer body 7. Figure 8 The other end of the L-shaped frame 41 shown is hinged to the hinge holes on both sides of the trailer.

[0032] The second method is via spring lock 8. See also Figure 6 , Figure 7 Specifically, each side of the trailer body 7 is equipped with a spring lock 8, and the other end of the L-shaped frame 4 is hinged to these two spring locks. Each spring lock 8 includes a frame 81, one side wall of which is fixedly connected to the trailer body 7, and the other side wall is hinged to the other end of the L-shaped frame 4. A lever 83 passes through the frame 81, and a spring 82 is fitted on the lever 83. When the L-shaped frame 4 is rotated into position, the lever 83 automatically springs into the round hole 42 of the L-shaped frame 4 under the action of the spring force of the spring 82, thereby locking the L-shaped frame 4 onto the trailer. When it is necessary to retract the tarpaulin 1, the lever 83 is pulled out from the round hole 42, so that the motor 2 can smoothly retract the tarpaulin 1.

[0033] The third method is through a round tube, that is, a round tube is provided under the trailer chassis, and the other end of the L-shaped frame 41 is hinged to the round tube.

[0034] In some embodiments, see Figure 3 , Figure 4The pulling device includes a winch 61, a cable 62, and a fixed pulley 63. The winch 61 is mounted on the trailer body 7, and the fixed pulley 63 is mounted on the trailer compartment 71. One end of the cable 62 is wound around the winch 61, and the other end passes over the fixed pulley 63 and is fixedly connected to the L-shaped frame 4 / 41. The winch 61 is used to pull the L-shaped frame 4 / 41 by winding the cable when the motor 2 releases the tarpaulin 1, so that the L-shaped frame 4 / 41 flips, thereby covering the trailer compartment 71 with the tarpaulin 1.

[0035] In some embodiments, see Figure 5 The motor bracket 3 is equipped with support rods 32, which are located on both sides of the motor 2 and are used to support the tarpaulin 1. Specifically, the support rods 32 can be cylindrical rods that rotate with the tarpaulin roll when the tarpaulin is rolled up or down.

[0036] The working process of this utility model:

[0037] When it is necessary to cover the trailer box 71, start the motor 2 to release the tarpaulin 1 through the shaft 31.

[0038] At the same time, the tensioning device begins to function. If the tensioning device is spring 52, as the tarpaulin is released, the tension of spring 52 will gradually pull the L-shaped frame to flip, causing the tarpaulin to unfold and cover the trailer cargo.

[0039] If the pulling device includes a winch 61, a cable 62, and a fixed pulley 63, then start the winch 61. The winch 61 pulls the L-shaped frame 4 / 41 to rotate by winding the cable 62 (the cable goes around the fixed pulley), which in turn causes the tarpaulin to unfold and cover the trailer.

[0040] When it is necessary to retract the tarpaulin 1, the motor 2 is started in reverse so that it winds the tarpaulin around the shaft 31.

[0041] During this process, the tensioning device (whether it is a spring or a winch) will be in a relaxed state or assist in the winding of the tarpaulin to ensure that the tarpaulin can be smoothly and neatly wound onto the motor shaft 31.

[0042] If the motor bracket 3 is equipped with a support rod 32, the support rod 32 will support the tarpaulin 1, ensuring that the tarpaulin 1 remains stable during the opening and closing process and avoiding wrinkles or damage.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic trailer covering device, characterized in that, The device includes a tarpaulin (1), a motor (2), a motor bracket (3), an L-shaped frame (4 / 41), and a tensioning device. The motor bracket (3) is located at the rear of the trailer, and the motor (2) is mounted on the motor bracket (3). The motor (2) raises and lowers the tarpaulin (1) via a rotating shaft (31). The starting end of the tarpaulin (1) is connected to one end of the L-shaped frame (4 / 41), and the other end of the L-shaped frame (4 / 41) is movably mounted on the trailer body (7). The tensioning device is used to pull the L-shaped frame (4 / 41) when the motor lowers the tarpaulin, causing the L-shaped frame (4 / 41) to flip, thereby covering the trailer body (71) with the tarpaulin (1).

2. The automatic trailer covering device according to claim 1, characterized in that, The tensioning device is a tension spring (52). One end of the tension spring (52) is connected to the trailer body (7) via a first hook (51), and the other end of the tension spring (52) is connected to the L-shaped frame (4 / 41) via a second hook (53).

3. The automatic trailer covering device according to claim 1, characterized in that, The pulling device includes a winch (61), a cable (62), and a fixed pulley (63). The winch (61) is installed on the trailer body (7), and the fixed pulley (63) is installed on the trailer compartment (71). One end of the cable (62) is wound around the winch (61), and the other end passes over the fixed pulley (63) and is fixedly connected to the L-shaped frame (4 / 41). The winch (61) is used to pull the L-shaped frame (4 / 41) by winding the cable (62) when the motor (2) releases the tarpaulin (1), so that the L-shaped frame (4 / 41) flips over, thereby covering the trailer compartment (71) with the tarpaulin (1).

4. The automatic trailer covering device according to claim 1, characterized in that, The motor bracket (3) is provided with a support rod (32), which is located on both sides of the motor (2) and is used to support the tarpaulin (1).

5. The automatic trailer covering device according to claim 1, characterized in that, It also includes spring locks (8), which are located on both sides of the trailer body (7), and the other end of the L-shaped frame (4 / 41) is hinged to the spring locks (8) on both sides of the trailer body (7).

6. The automatic trailer covering device according to claim 5, characterized in that, The spring lock (8) includes a frame (81), one side wall of which is mounted on the trailer body (7), and the other side wall is hinged to the other end of the L-shaped frame (4 / 41). A lever (83) runs through the frame (81), and a spring (82) is mounted on the lever (83). When the L-shaped frame (4 / 41) is rotated into place, the lever (83) can spring into the round hole (42) of the L-shaped frame (4 / 41) under the action of the spring force of the spring (82) to lock the L-shaped frame.

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