Automatic carriage door of boxcar

Abstract

The utility model discloses an automatic boxcar door which comprises a boxcar body and a boxcar door assembly arranged at one end of the boxcar body, the boxcar door assembly is used for sealing the boxcar body, the boxcar door assembly comprises a support, a rotating shaft, a rotating seat, a fixing plate, a telescopic plate, a servo motor A, a screw rod and an internal thread, and the screw rod is in transmission connection with the internal thread; a servo motor A drives a screw rod to rotate, and the servo motor A drives a telescopic plate to move along a sliding groove under the transmission action of an internal thread, so that the width of a compartment door is automatically adjusted, the size of the compartment door of a truck can be adjusted, it is guaranteed that the compartment door can be completely opened in a narrow space, and the cargo loading and unloading efficiency is guaranteed; and the transparent observation window is arranged, and the condition in the boxcar can be directly observed through the transparent observation window.

Description

Technical Field

[0001] This utility model relates to the field of truck cargo door technology, and in particular to an automatic truck cargo door. Background Technology

[0002] The principle behind truck cargo doors is that they are hinged to the truck body, allowing them to open and close. Typically, a cargo door consists of two or more door panels, each equipped with a lock and handle for easy operation by the driver or worker. These doors operate similarly to doors and windows; unlocking the lock and rotating the handle allows the door to be opened. Cargo doors are usually designed with sealing strips to ensure a tight seal between the door and the truck body, preventing dust, moisture, and other contaminants from entering the cargo area. Furthermore, for easier loading and unloading, some cargo doors can be configured to open fully or partially.

[0003] In general, the principle of the rear cargo door of a truck is to connect the cargo door and the truck body with hinges, and to open and close the door in combination with the door lock and door handle, so as to realize the loading and unloading of goods and the sealing of the cargo compartment.

[0004] In the prior art, Chinese utility model patent with authorization announcement number CN201999088U discloses an automatic cargo box door for a truck. It involves installing a gearbox in front of the cargo box door, close to the driver's cab, and mounting a movable shaft on the truck beam. One end of the movable shaft has a connecting wheel that connects to the gearbox. The lower ends of the several cargo box doors are integrated with the movable shaft. Pins and return springs are located on both sides of the upper end of each door. Pin holes are located on both sides of the upper end of the fixing posts between the doors, containing pistons and push rods. An air intake pipe is located below the pistons. When the cargo box door needs to be closed, the gearbox is activated, and the pins on the doors insert into the pin holes, automatically closing the door. When the cargo box door needs to be opened, the push rod pushes out the pins, disengaging the door from the fixing posts, and the door automatically opens.

[0005] Problems compared to existing technologies: Some existing truck cargo compartment doors cannot automatically adjust their size, making it difficult to fully open the doors in narrow spaces, affecting cargo loading and unloading efficiency and reducing the timeliness of cargo transportation.

[0006] Therefore, there is an urgent need for an automatic cargo door for trucks. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an automatic cargo door for a freight car.

[0008] The present invention solves its technical problem through the following technical solution: it includes a carriage body and a door assembly disposed at one end of the carriage body for closing the carriage body. The door assembly includes a bracket, which is welded to both sides of the carriage body. A rotating shaft is disposed at one end of the bracket, and a rotating seat is disposed on the outer side of the rotating shaft. A fixing plate is disposed at one end of the rotating seat, and a telescopic plate is disposed on the inner wall of the fixing plate. A servo motor A is disposed at the bottom of the fixing plate, and a screw is disposed at the rotating end of the servo motor A. An internal thread is disposed at the middle position of the telescopic plate, and the screw is connected to the internal thread for transmission.

[0009] As a further embodiment of this utility model: opening and closing mechanisms are provided on both sides of the carriage body for opening the carriage door at multiple angles. The opening and closing mechanism includes a mounting frame, which is welded to both sides of the carriage body. A servo motor B is provided on the inner wall of the mounting frame. A worm gear is provided at the rotating end of the servo motor B. A worm wheel is provided at the middle position of the rotating shaft. The worm wheel is connected to the worm gear in a transmission.

[0010] As a further improvement of this utility model: a plurality of sliding grooves are evenly provided on one side of the fixed plate, and a plurality of strip plates are evenly provided on one side of the telescopic plate, so as to ensure that the fixed plate and the telescopic plate are on the same plane.

[0011] As a further improvement of this utility model: a sealing ring is provided at one end of the carriage body, and a transparent observation window is provided on one side of the telescopic plate.

[0012] As a further improvement of this utility model: a protective cover is provided at one end of the servo motor B, and a retaining strip is provided at one end of the telescopic plate.

[0013] As a further improvement of this utility model, a handle is provided on one side of the card strip.

[0014] As a further improvement of this utility model: the fixed plate is provided with limit rods on both sides, the telescopic plate is provided with limit grooves on both sides, and the limit rods and limit grooves are slidably connected.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] 1. By setting up a servo motor A, the servo motor A drives the screw to rotate. Under the transmission action of the internal thread, the servo motor A drives the telescopic plate to move along the slide, thereby automatically adjusting the width of the truck bed door. This allows the size of the truck bed door to be adjusted, ensuring that the door can be fully opened in narrow spaces, thus ensuring the efficiency of loading and unloading goods and improving the timeliness of goods transportation. A transparent observation window is also provided, through which the interior of the truck bed can be directly observed.

[0017] 2. By setting up a servo motor B, the servo motor B drives the worm gear to rotate, which in turn drives the worm wheel to rotate. This causes the cargo box door to rotate automatically through the rotating seat, allowing the cargo box door to open or close automatically at multiple angles. The self-locking property of the worm wheel and worm gear is used to lock the cargo box door, preventing it from reversing and improving the safety of opening the cargo box door. Attached Figure Description

[0018] Figure 1 A schematic diagram of an isometric structure according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the front cross-sectional structure according to an embodiment of the present invention is shown;

[0020] Figure 3 A side sectional view of the structure according to an embodiment of the present invention is shown;

[0021] Figure 4 The present invention provides an embodiment of the present invention. Figure 2 A magnified view of the structure at point A in the middle;

[0022] Figure 5 The present invention provides an embodiment of the present invention. Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0023] Legend:

[0024] 100. Car body; 110. Slide rail; 120. Strip plate; 130. Sealing ring; 140. Protective cover; 150. Transparent observation window; 160. Handle; 170. Limiting rod; 180. Limiting groove; 190. Locking strip;

[0025] 101. Bracket; 102. Shaft; 103. Rotating seat; 104. Fixing plate; 105. Telescopic plate; 106. Servo motor A; 107. Screw; 108. Internal thread;

[0026] 201. Mounting bracket; 202. Servo motor B; 203. Worm gear; 204. Worm wheel. Detailed Implementation

[0027] 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 this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0028] In this 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 above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] Example 1:

[0031] like Figure 1-5 As shown, an automatic cargo door for a freight truck includes a cargo body 100 and a door assembly disposed at one end of the cargo body 100 for closing the cargo body 100. The door assembly includes a bracket 101, which is welded to both sides of the cargo body 100. A rotating shaft 102 is rotatably connected to one end of the bracket 100. A rotating seat 103 is bolted to the outer side of the rotating shaft 102. A fixing plate 104 is bolted to one end of the rotating seat 103. A telescopic plate 105 is slidably connected to the inner wall of the fixing plate 104. One side of the fixing plate 104 is evenly cut with... Multiple sliding grooves 110 are provided. Multiple strip plates 120 are evenly welded to one side of the telescopic plate 105 to ensure that the fixed plate 104 and the telescopic plate 105 are on the same plane. A servo motor A106 is fixed to the bottom of the fixed plate 104 by bolts. A screw 107 is fixed to the rotating end of the servo motor A106 by bolts. An internal thread 108 is cut in the middle of the telescopic plate 105. The screw 107 is connected to the internal thread 108 for transmission. A sealing ring 130 is attached to one end of the carriage body 100. A transparent observation window 150 is fixed to one side of the telescopic plate 105 by bolts.

[0032] In this embodiment, a servo motor A106 is provided, which drives the screw 107 to rotate. Under the transmission action of the internal thread 108, the servo motor A106 drives the telescopic plate 105 to move along the slide groove 110, thereby automatically adjusting the width of the truck bed door. This allows the size of the truck bed door to be adjusted, ensuring that the door can be fully opened in narrow spaces, thus ensuring the efficiency of loading and unloading goods and improving the timeliness of goods transportation. A transparent observation window 150 is provided, through which the interior of the truck bed can be directly observed.

[0033] Example 2:

[0034] like Figure 1-5 As shown, an automatic cargo door for a freight truck includes opening and closing mechanisms disposed on both sides of the cargo body 100 for multi-angle opening of the cargo door. The opening and closing mechanisms include mounting brackets 201, which are welded to both sides of the cargo body 100. A servo motor B202 is bolted to the inner wall of the mounting bracket 201. A protective cover 140 is bolted to one end of the servo motor B202. A retaining strip 190 is bolted to one end of the telescopic plate 105. A handle 160 is bolted to one side of the retaining strip 190. A worm gear 203 is bolted to the rotating end of the servo motor B202. A worm wheel 204 is bolted to the middle position of the rotating shaft 102. The worm wheel 204 is connected to the worm gear 203 for transmission. Limiting rods 170 are bolted to both sides of the fixed plate 104. Limiting grooves 180 are cut on both sides of the telescopic plate 105. The limiting rods 170 and the limiting grooves 180 are slidably connected.

[0035] In this embodiment, a servo motor B202 is provided, which drives the worm gear 203 to rotate, and the worm gear 203 drives the worm wheel 204 to rotate. This causes the rotating seat 103 to automatically rotate the cargo box door, allowing the cargo box door to automatically open or close at multiple angles. The self-locking property of the worm wheel 204 and the worm gear 203 is used to lock the cargo box door, preventing the door from reversing and improving the safety of opening the cargo box door.

[0036] 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 equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic cargo door for a freight truck, characterized in that, Includes a carriage body (100) and a door assembly located at one end of the carriage body (100) for closing the carriage body (100). The door assembly includes a bracket (101) welded to both sides of the carriage body (100). One end of the bracket (101) is provided with a rotating shaft (102). A rotating seat (103) is provided on the outer side of the rotating shaft (102). One end of the rotating seat (103) is provided with a fixing plate (104). The inner wall of the fixing plate (104) is provided with a telescopic plate (105). A servo motor A (106) is provided at the bottom of the fixing plate (104). A screw (107) is provided at the rotating end of the servo motor A (106). An internal thread (108) is provided at the middle position of the telescopic plate (105). The screw (107) and the internal thread (108) are connected in a transmission manner.

2. The automatic cargo door for a freight car according to claim 1, characterized in that, The carriage body (100) is provided with opening and closing mechanisms on both sides for opening the carriage doors at multiple angles. The opening and closing mechanism includes a mounting frame (201), which is welded to both sides of the carriage body (100). A servo motor B (202) is provided on the inner wall of the mounting frame (201). A worm gear (203) is provided at the rotating end of the servo motor B (202). A worm wheel (204) is provided at the middle position of the rotating shaft (102). The worm wheel (204) is connected to the worm gear (203) in a transmission.

3. An automatic cargo door for a freight car according to claim 1, characterized in that, The fixed plate (104) has a plurality of sliding grooves (110) evenly arranged on one side, and the telescopic plate (105) has a plurality of strip plates (120) evenly arranged on one side, to ensure that the fixed plate (104) and the telescopic plate (105) are on the same plane.

4. An automatic cargo door for a freight car according to claim 1, characterized in that, A sealing ring (130) is provided at one end of the carriage body (100), and a transparent observation window (150) is provided on one side of the telescopic plate (105).

5. An automatic cargo door for a freight car according to claim 2, characterized in that, One end of the servo motor B (202) is provided with a protective cover (140), and one end of the telescopic plate (105) is provided with a retaining strip (190).

6. An automatic cargo door for a freight car according to claim 5, characterized in that, A handle (160) is provided on one side of the card strip (190).

7. An automatic cargo door for a freight car according to claim 1, characterized in that, Limiting rods (170) are provided on both sides of the fixed plate (104), and limiting grooves (180) are provided on both sides of the telescopic plate (105). The limiting rods (170) and the limiting grooves (180) are slidably connected.

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