A container door

By combining the inner and outer door frame structure and motor drive system with sealing strips and shock-absorbing grooves, the sealing and structural strength issues of the container door are solved, enabling convenient opening and closing and improving transportation safety and efficiency.

CN224428680UActive Publication Date: 2026-06-30TONGCHENG LOGISTICS EQUIP (YANGZHOU) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TONGCHENG LOGISTICS EQUIP (YANGZHOU) CO LTD
Filing Date
2025-07-25
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional container doors have poor sealing performance, insufficient structural strength, and are inconvenient to open and close, affecting transportation safety and efficiency.

Method used

It adopts an inner and outer door frame structure, combined with sealing strips, a motor-driven large and small gear system and a two-way screw, and equipped with shock-absorbing grooves and shock-absorbing plates to realize the sealing, opening and closing of the door panel.

Benefits of technology

It improves the container's sealing and structural strength, reduces the intrusion of rainwater and dust, extends its service life, and simplifies the operation of the door panels.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224428680U_ABST
    Figure CN224428680U_ABST
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Abstract

This utility model relates to the field of container technology, and in particular to a container door. The technical solution includes: a door body and a container body. The door body includes an inner door frame, an outer door frame on the front side of the inner door frame, and a door sill on the front side of the outer door frame. A mounting groove is formed on the front side of the door sill, and a motor is installed on the right side inside the mounting groove. A large gear is installed at the output end of the motor. This utility model securely connects the door body and the container body with fixing bolts. The use of sealing strips one and two ensures a tight connection between the door body and the container body, effectively preventing rainwater and dust from entering the container interior, providing a good protective environment for goods. This solves the problem of poor sealing performance of traditional doors. The inclusion of shock-absorbing grooves to the outer shock-absorbing plate reduces the pressure generated when the two door panels are closed, preventing deformation of the two door panels over time and extending their service life.
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Description

Technical Field

[0001] This utility model relates to the field of container technology, and in particular to a container door. Background Technology

[0002] Containers are widely used globally as an important carrier in modern logistics and transportation. The container door, as a crucial component of the container, directly affects the efficiency of loading and unloading goods, transportation safety, and the container's lifespan.

[0003] Traditional container doors present numerous problems in practical use. For example, some doors have poor sealing performance with the container, allowing rainwater and dust to easily enter the container during transportation, especially in inclement weather, thus damaging the goods. Some doors lack structural strength and are prone to deformation during frequent opening and closing, affecting their normal use. Furthermore, some doors have inconvenient opening and closing methods, making operation complex and increasing the time and labor costs of loading and unloading goods. Therefore, a new type of container door is needed. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a container door.

[0005] The technical solution of this utility model: A container door body, including a door body and a container body, the door body including an inner door frame, an outer door frame provided on the front side of the inner door frame, a door lintel provided on the front side of the outer door frame, an installation groove provided on the front side of the door lintel, a motor provided on the right side inside the installation groove, a large gear provided at the output end of the motor, a small gear provided on the left side inside the installation groove, a double-ended screw provided on the inner ring of the small gear, an adjustment groove provided on the bottom surface of the door lintel, and the left end of the double-ended screw extending through to... Inside the adjusting groove, threaded blocks are threaded to the outer rings of both ends of the bidirectional screw. Each threaded block has a door panel on its bottom surface. A damping groove is formed inside the two door panels on the side that is close to each other. A set of telescopic rods is set on the side that is far from each other. A spring is sleeved on the outer ring of each telescopic rod. An inner damping plate is set on the side that is close to each other of the two sets of telescopic rods. A set of guide rods is set on the side that is close to each other of the two sets of inner damping plates. An outer damping plate is set on the side that is close to each other of the two sets of guide rods.

[0006] Preferably, the outer ring of the inner door frame fits into the inner wall of the container body, and corresponding pin slots are provided on both the inner door frame and the container body. Each pin slot is equipped with a fixing bolt, and a sealing strip is provided on one side of the inner door frame.

[0007] Preferably, the bottom surface of the door lintel is in contact with the top surface of the container body, the rear side of the door lintel and the top surface of the container body are provided with the same sealing strip, and both the left and right sides of the door lintel are sloped.

[0008] Preferably, a maintenance window is provided on the front side of the door lintel at the location of the mounting groove.

[0009] Preferably, the large gear and the small gear are meshed together.

[0010] Preferably, each of the door panels has an internal receiving groove, and each receiving groove has an internal heat insulation layer.

[0011] Preferably, the front side of the outer door frame has two guide grooves, each guide groove is provided with a limit rod, and the outer ring of the two limit rods that are far apart from each other is slidably provided with a limit block, and the front side of each limit block is fixedly connected to the rear side of a corresponding door panel.

[0012] Preferably, each of the two door panels has a through hole at the position of the guide rod on the side that is close to each other, and the guide rod is slidably connected to the through hole.

[0013] Preferably, a soft pad is provided on the side of each of the two external shock absorbers that are close to each other.

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

[0015] This utility model uses fixing bolts to securely connect the door body and the container body, and uses sealing strips one and two to ensure a tight connection between the door body and the container body, effectively preventing rainwater, dust, etc. from entering the container interior, providing a good protective environment for the goods, and solving the problem of poor sealing performance of traditional doors. By setting shock-absorbing grooves to the outer shock-absorbing plate, the pressure generated when the two door panels are closed is reduced, preventing the two door panels from deforming after long-term use and extending their service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 for Figure 1 A magnified structural diagram of A in the middle;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0019] Figure 4 This is a schematic diagram of the right-side cross-sectional structure of the present invention;

[0020] Figure 5This is a schematic diagram of the front cross-sectional structure of the main body of the box door of this utility model;

[0021] Figure 6 for Figure 5 A magnified structural diagram of B in the diagram;

[0022] Figure 7 This is a partial structural diagram of the box door body in this utility model.

[0023] Reference numerals in the attached diagram: 1. Door body; 101. Inner door frame; 102. Outer door frame; 103. Door rim; 104. Mounting groove; 105. Motor; 106. Large gear; 107. Small gear; 108. Double-acting screw; 109. Adjustment groove; 110. Threaded block; 111. Door panel; 112. Shock-absorbing groove; 113. Telescopic rod; 114. Spring; 115. Inner shock-absorbing plate; 116. Guide rod; 117. Outer shock-absorbing plate; 2. Container body; 3. Fixing bolt; 4. Sealing strip one; 5. Sealing strip two; 6. Maintenance window; 7. Insulation layer; 8. Limiting rod; 9. Limiting block; 10. Soft pad. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. Example

[0025] like Figures 1 to 7 As shown, the present invention proposes a container door, including a door body 1 and a container body 2. The door body 1 includes an inner door frame 101, the outer ring of which fits against the inner wall of the container body 2. Corresponding slots are provided on both the inner door frame 101 and the container body 2, and a fixing bolt 3 is provided inside each slot. The fixing bolts 3 facilitate a tight connection between the door body 1 and the container body 2. A sealing strip 4 is provided on one side of the inner door frame 101. 101 is fixedly connected to the sealing strip 4. The sealing strip 4 is used to improve the sealing between the door body 1 and the container body 2 and prevent dust and rainwater from entering. An outer door frame 102 is provided on the front side of the inner door frame 101. The inner door frame 101 and the outer door frame 102 are fixedly connected. A door sill 103 is provided on the front side of the outer door frame 102. The outer door frame 102 and the door sill 103 are fixedly connected. The bottom surface of the door sill 103 is in contact with the top surface of the container body 2. The door sill 103 is L-shaped.

[0026] The rear side of the door sill 103 and the top surface of the container body 2 are provided with the same sealing strip 2 5. The sealing strip 2 5 is fixedly connected to the door sill 103. The sealing strip 2 5 can ensure the airtightness of the connection between the door body 1 and the container body 2. The left and right sides of the door sill 103 are both sloped to divert rainwater to both sides. The front side of the door sill 103 is provided with an installation groove 104. The front side of the door sill 103 is provided with a maintenance window 6 at the position of the installation groove 104 to facilitate maintenance of the internal structure of the installation groove 104. The right side of the installation groove 104 is provided with a motor 105. The motor 105 is fixedly installed on the right side of the installation groove 104. The output end of the motor 105 is provided with a large gear 106. The output end of the motor 105 is fixedly connected to the large gear 106. The left side of the installation groove 104 is provided with a small gear 107. The left side of the installation groove 104 is rotatably connected to the small gear 107. The large gear 106 and the small gear 107 are meshed to facilitate transmission.

[0027] The output of motor 105 drives the large gear 106 to rotate, which in turn drives the small gear 107 to rotate. A bidirectional screw 108 is provided on the inner ring of the small gear 107, and the inner ring of the small gear 107 is fixedly connected to the outer ring of the bidirectional screw 108. An adjustment groove 109 is provided on the bottom surface of the door sill 103. The left end of the bidirectional screw 108 extends through the adjustment groove 109 and is rotatably connected to the door sill 103. The left end of the bidirectional screw 108 is connected to the left end of the adjustment groove 109. The inner side wall is rotatably connected to facilitate the support and fixation of the bidirectional screw 108. Both ends of the bidirectional screw 108 are threadedly connected to threaded blocks 110. The outer wall of the threaded block 110 is slidably connected to the inner wall of the adjusting groove 109. The rotation of the bidirectional screw 108 can drive the two threaded blocks 110 to move closer or further apart. Each threaded block 110 has a door plate 111 on its bottom surface. The threaded block 110 is fixedly connected to the door plate 111. The door plate 111 can be moved by the threaded block 110.

[0028] Each door panel 111 has an internal receiving groove, and each receiving groove is equipped with a heat insulation layer 7. The heat insulation layer 7 is fixedly installed inside the receiving groove. By setting the heat insulation layer 7, the heat transfer between the inside and outside of the container body 2 can be effectively reduced, which is suitable for transporting goods with temperature requirements and expands the application range of the container body 2. The front side of the outer door frame 102 has two guide grooves, and each guide groove is equipped with a limit rod 8. The limit rod 8 is fixedly installed inside the guide groove. The outer ring of the two limit rods 8 that are far apart from each other is slidably equipped with a limit block 9. The limit rod 8 can guide and limit the running trajectory of the limit block 9. The front side of each limit block 9 is fixedly connected to the rear side of the corresponding door panel 111, which facilitates the guidance and limitation of the running trajectory of the door panel 111 through the limit block 9. The side of the two door panels 111 that are close to each other is equipped with a shock-absorbing groove 112. The side of the two shock-absorbing grooves 112 that are far apart from each other is equipped with a set of telescopic rods 113. Each set of telescopic rods 113 is equipped with multiple rods.

[0029] Each telescopic rod 113 is fitted with a spring 114 around its outer ring. The telescopic rod 113 guides and limits the direction of the elastic potential change of the spring 114, and the spring 114 also buffers the pressure generated by the merging of the two door panels 111. An inner damping plate 115 is provided on the side of each set of telescopic rods 113 that is close to each other. The telescopic rod 113 and the inner damping plate 115 are fixedly connected, and the inner damping plate 115 is slidably connected to the damping groove 112. A set of guide rods 116 is provided on the side of each of the two inner damping plates 115 that is close to each other. The two door panels 111 are fixedly connected. Each door panel 111 has a through hole at the position of the guide rod 116 on the side that is close to each other. The guide rod 116 is slidably connected to the through hole. Each door panel 116 has an outer damping plate 117 on the side that is close to each other. The guide rod 116 and the outer damping plate 117 are fixedly connected. There is a buffer space between the outer damping plate 117 and the door panel 111. Each door panel 117 has a soft pad 10 on the side that is close to each other. The outer damping plate 117 and the soft pad 10 are fixedly connected. The soft pad 10 can reduce the vibration generated by the merging of the two door panels 111.

[0030] In this embodiment, when using this device, the inner door frame 101 is first fixedly connected to the container body 2 using fixing bolts 3. Then, the sealing strips 4 and 5 ensure the tight sealing of the connection between the door body 1 and the container body 2. When it is necessary to open or close the two door panels 111, the motor 105 is activated. The output of the motor 105 drives the large gear 106 to rotate. The rotation of the large gear 106 drives the small gear 107 to rotate. The rotation of the small gear 107 drives the double-acting screw 108 to rotate. The rotation of the double-acting screw 108 drives the two screws... The patterned blocks 110 move closer to each other or further away from each other along the bidirectional screw 108, thereby driving the two door panels 111 to move closer to each other or further away from each other, thus enabling the door panels 111 to open and close. When the two door panels 111 are closed, the soft pads 10 on the two outer damping plates 117 first come into contact with each other, and then exert pressure on the outer damping plates 117, thereby pressing the two guide rods 116 to move to the side further away from each other, thereby pushing the inner damping plate 115 to move to the side further away from each other, thereby compressing the mounting groove 104, thus buffering the force generated when the two door panels 111 are closed.

[0031] The above-described specific embodiments are merely preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above-described specific embodiments.

Claims

1. A container door body comprising a door body (1) and a container body (2), characterized in that: The door body (1) includes an inner door frame (101), an outer door frame (102) is provided on the front side of the inner door frame (101), a door lintel (103) is provided on the front side of the outer door frame (102), a mounting groove (104) is provided on the front side of the door lintel (103), a motor (105) is provided on the right side inside the mounting groove (104), a large gear (106) is provided at the output end of the motor (105), a small gear (107) is provided on the left side inside the mounting groove (104), a double-ended screw (108) is provided on the inner ring of the small gear (107), an adjustment groove (109) is provided on the bottom surface of the door lintel (103), and the left end of the double-ended screw (108) extends through into the interior of the adjustment groove (109). Both ends of the bidirectional screw (108) are threaded with threaded blocks (110). Each threaded block (110) has a door panel (111) on its bottom surface. The two door panels (111) are provided with shock-absorbing grooves (112) on the side that is close to each other. The two shock-absorbing grooves (112) are provided with a set of telescopic rods (113) on the side that is far from each other. Each telescopic rod (113) is fitted with a spring (114) on its outer ring. The two sets of telescopic rods (113) are provided with inner shock-absorbing plates (115) on the side that is close to each other. The two sets of inner shock-absorbing plates (115) are provided with a set of guide rods (116) on the side that is close to each other. The two sets of guide rods (116) are provided with outer shock-absorbing plates (117) on the side that is close to each other.

2. A container door according to claim 1, characterised in that The outer ring of the inner door frame (101) is fitted to the inner wall of the container body (2). The inner door frame (101) and the container body (2) are provided with corresponding pin slots. Each pin slot is provided with a fixing bolt (3). A sealing strip (4) is provided on one side of the inner door frame (101).

3. A container door according to claim 1, characterized in that, The bottom surface of the door lintel (103) is attached to the top surface of the container body (2). The rear side of the door lintel (103) and the top surface of the container body (2) are provided with the same sealing strip 2 (5). The left and right sides of the door lintel (103) are both set with slopes.

4. A container door according to claim 1, characterized in that, A maintenance window (6) is provided on the front side of the door lintel (103) at the position of the mounting groove (104).

5. A container door according to claim 1, characterized in that, The large gear (106) and the small gear (107) are meshed together.

6. A container door according to claim 1, characterized in that, Each of the door panels (111) has an internal receiving groove, and each receiving groove has an internal heat insulation layer (7).

7. A container door according to claim 1, characterized in that, Two guide grooves are provided on the front side of the outer door frame (102). Each guide groove is provided with a limit rod (8). The outer ring of the two limit rods (8) that are far apart from each other is provided with a limit block (9). The front side of each limit block (9) is fixedly connected to the rear side of a corresponding door panel (111).

8. A container door according to claim 1, characterized in that, Both door panels (111) have through holes at the positions of the guide rods (116) on the side that are close to each other, and the guide rods (116) are slidably connected to the through holes.

9. A container door according to claim 1, characterized in that, A pad (10) is provided on the side of each of the two external damping plates (117) that are close to each other.