Sealing structure of boxcar

By designing a sealing assembly consisting of sliders, seals, and locking units, the problems of large gaps between truck cargo doors and the cargo compartment, as well as the complexity of sealing strip installation, have been solved. This has enabled automatic sealing and convenient replacement, preventing cargo leakage and improving installation efficiency and service life.

CN223812484UActive Publication Date: 2026-01-20ANHUI DONGSHUN AUTOMOBILE R&D CO LTD
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Patent Information

Application Number
CN202520530871.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-01-20
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

The gaps between the doors and the cargo box of existing trucks are too large. The doors are latched and require manual closing, which is laborious and can easily lead to cargo leakage. The installation of sealing strips is complicated and costly.

Method used

Design a sealing assembly including a slider, a seal, a fixing rod, a locking unit, and a connecting unit, which realizes automatic sealing of the box door through a driving component and a pushing component, and the seal can be quickly replaced.

Benefits of technology

This achieves a tight connection between the container door and the carriage, preventing cargo leakage and improving the installation efficiency and service life of the seals.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223812484U_ABST
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Abstract

The utility model discloses a sealing structure of a boxcar, which belongs to the technical field of boxcars and comprises a boxcar, a box door is arranged on the lateral portion of the boxcar, and a sealing component is arranged on the lateral portion of the box door. The sliding block is movably arranged on the inner side wall of the compartment, the sealing piece is installed on the side portion of the sliding block, the fixing rod is installed on the top of the inner surface of the sealing piece, the locking unit is arranged between the fixing rod and the compartment door, and the sealing piece comprises a movable frame installed on the side portion of the sliding block and a sealing strip arranged on the side face, opposite to the compartment door, of the movable frame. The locking unit comprises a movable groove formed in the side face of the fixing rod, one end of an extrusion piece installed on the side wall of the movable groove, and a positioning rod installed at the other end of the extrusion piece. A connecting unit is arranged between the sliding block and the sealing piece. Through the arrangement of the sealing assembly, goods leakage is avoided, the installation efficiency of the sealing piece is improved, and the service life of the device is prolonged.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a truck compartment technical field especially is related to a kind of sealing structure of truck compartment. BACKGROUND

[0002] The van is also called van, mainly used for the full-sealing transportation of various goods, and special types of van can also transport chemical hazardous goods. It has the advantages of motor flexibility, easy operation, high efficiency, large transportation capacity, full use of space, safety and reliability. In long-distance transportation, the truck compartment needs good sealing function, especially for the door panel connecting the compartment body and the upper and lower door frame, which needs certain sealing effect. After closing the truck compartment door, it can prevent goods from falling.

[0003] The existing truck compartment generally sets a box door at the tail of the truck compartment or both sides of the truck compartment to facilitate loading and unloading goods, but the gap between the box door and the truck compartment is too large, and the box door is generally of the lock type and needs to be closed manually, which is laborious when closing the box door. If the force is small, the box door and the truck compartment may not be tightly closed, which further increases the gap between the box door and the truck compartment, and the goods may leak. Moreover, the sealing strip of the truck compartment door panel is generally installed by buckling or rivet riveting, which has a complex structure, low installation efficiency and high installation cost.

[0004] Therefore, it is urgent to provide a sealing structure of truck compartment to solve the above problems. INVENTION CONTENTS

[0005] The utility model solves the technical problem of overcoming the above-mentioned prior art, the gap between the box door and the truck compartment is too large, the box door is generally of the lock type and needs to be closed manually, which is laborious when closing the box door. If the force is small, the box door and the truck compartment may not be tightly closed, which further increases the gap between the box door and the truck compartment, and the goods may leak. Moreover, the sealing strip of the truck compartment door panel is generally installed by buckling or rivet riveting, which has a complex structure, low installation efficiency and high installation cost. The utility model provides a sealing structure of truck compartment.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a sealing structure of truck compartment, comprising a truck compartment, a box door is arranged on the side of the truck compartment, and a sealing assembly is arranged on the side of the box door.

[0007] The sealing assembly comprises a sliding block movably arranged on the inner side wall of the truck compartment, a sealing element installed on the side of the sliding block, a fixed rod installed on the top of the inner surface of the sealing element, and a locking unit arranged between the fixed rod and the box door. A connecting unit is arranged between the sliding block and the sealing element.

[0008] The utility model further sets up: the outside of car body is opposite and is provided with the protection pole.

[0009] The utility model further sets up: the inside wall bottom of car body is movably connected with the pivot, one end of box door is installed the outside of pivot, and the side of pivot is provided with the drive piece.

[0010] The utility model further sets up: the inside wall of car body is provided with the sliding slot, the sliding block is movably arranged in the inside of sliding slot, and the side of sliding block is provided with the pusher.

[0011] The utility model further sets up: the sealing piece includes the mobile frame of installation in the side of sliding block, sets up the sealing strip of mobile frame opposite box door side.

[0012] The utility model further sets up: the number of locking unit has two groups, two locking units are opposite and are provided on the side of fixed link;

[0013] The locking unit includes the movable slot of setting in the side of fixed link, one end of the extrusion piece of installation in the side wall of movable slot, the positioning rod of installation in the other end of extrusion piece, the side of box door corresponds the position of the positioning groove of setting up, and the side wall of positioning groove is connected with extruding rod in screw thread.

[0014] The utility model further sets up: the side wall of car body corresponds the position of the recess of setting up.

[0015] The utility model further sets up: the connecting unit includes the socket of installation in the side of sliding block, the insertion slot of setting in the side of mobile frame, the limiting part of setting between mobile frame and socket;

[0016] The limiting part includes the installation groove of setting in the inside of the side wall of mobile frame, the limiting rod of movably setting in the inside of installation groove, the limiting ring of installation in the outside of limiting rod, the reset piece of setting in the side of limiting ring, and the bottom of socket is provided with the limiting slot of adapting with the size of the end of limiting rod.

[0017] The utility model has the advantages that:

[0018] 1. The utility model discloses a sealing assembly is set up, cooperation drive piece works cooperation pivot and make the box door rotate to adhere to car body, then cooperation pusher work pushes the sliding block and slide along the inside of sliding slot, and the sliding block will drive mobile frame to move simultaneously when sliding, thereby making the sealing strip and box door close contact, thereby sealing the junction of box door and car body, avoid the leakage of goods;

[0019] 2. The utility model discloses a connecting unit is set up, when the sealing element is damaged and needs to be replaced when long -term use, first cooperation pulls the limit rod to make its one end with the limit slot of the socket bottom separation to the outside, and pull the movable frame to the outside, make the socket and the slot separate, thereby with sealing element is disassembled, the sealing element after replacement is placed in the one side of sliding block, and cooperation socket and slot make sealing element preliminary installation on the sliding block, and cooperation limit ring and the elastic extrusion effect of resettable spare, push limit rod to make its one end with limit slot and engage, thereby movable frame is installed on the sliding block, improved the installation efficiency of sealing element, prolonged the service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the overall three -dimensional structure diagram of the utility model;

[0021] Figure 2 It is Figure 1 The partial close -up of A in the middle;

[0022] Figure 3 It is the three -dimensional structure diagram of the sealing assembly of the utility model;

[0023] Figure 4 It is Figure 3 The partial close -up of B in the middle;

[0024] Figure 5 It is Figure 3 The partial close -up of C in the middle.

[0025] In the drawing: 1, car; 11, guard bar; 12, pivot; 2, box door; 3, sealing assembly; 31, sliding block; 32, sealing element; 321, movable frame; 322, sealing strip; 33, fixed rod; 34, locking unit; 341, extrusion spare; 342, positioning rod; 343, positioning slot; 344, extrusion rod; 35, connecting unit; 351, socket; 352, slot; 353, limit part; 3531, limit rod; 3532, limit ring; 3533, resettable spare; 36, pusher. DETAILED DESCRIPTION

[0026] The advantages and characteristics of the utility model will be more easy to be understood by the person skilled in the art with the preferred embodiments of the utility model being specifically described in connection with the drawings, so that the protection scope of the utility model can be more clearly and explicitly defined.

[0027] Please refer to Figures 1-5 A sealing structure of truck carriage, including car 1, the side of car 1 is provided with box door 2, and the side of box door 2 is equipped with sealing assembly 3, and sealing assembly 3 is used for sealing the connecting place of box door 2 and car 1, to avoid goods leakage;

[0028] The sealing assembly 3 comprises a sliding block 31 movably arranged on the inner side wall of the compartment 1, a sealing piece 32 arranged on the side of the sliding block 31, a fixed rod 33 arranged on the top of the inner surface of the sealing piece 32, a locking unit 34 arranged between the fixed rod 33 and the box door 2, and a connecting unit 35 arranged between the sliding block 31 and the sealing piece 32.

[0029] The outer side of the compartment 1 is provided with a protective rod 11, which is used to avoid damage to the outer surface of the compartment 1.

[0030] The inner wall of the compartment 1 is movably connected with a rotating shaft 12, one end of the box door 2 is arranged on the outer side of the rotating shaft 12, and the side of the rotating shaft 12 is provided with a driving part (not shown in the figure), which is preferably a rotary air cylinder, used to drive the rotating shaft 12 to rotate the box door 2.

[0031] The inner wall of the compartment 1 is provided with a sliding groove, and the sliding block 31 is movably arranged in the sliding groove, and the side of the sliding block 31 is provided with a pushing part 36, which is preferably an extension air cylinder.

[0032] The sealing piece 32 comprises a moving frame 321 arranged on the side of the sliding block 31, and a sealing strip 322 arranged on the side of the moving frame 321 opposite to the box door 2, and the sealing strip 322 is in a rectangular frame structure.

[0033] The number of locking units 34 is two, and the two locking units 34 are arranged on the side of the fixed rod 33.

[0034] The locking unit 34 comprises a movable groove arranged on the side of the fixed rod 33, one end of an extrusion part 341 arranged on the side wall of the movable groove, and a positioning rod 342 arranged on the other end of the extrusion part 341, the side of the box door 2 is provided with a positioning groove 343 corresponding to the position of the positioning rod 342, the side wall of the positioning groove 343 is threadedly connected with an extrusion rod 344, the size of the positioning groove 343 is matched with the size of one end of the positioning rod 342, and the extrusion part 341 is preferably an extrusion spring, and the extrusion rod 344 is used to push the positioning rod 342 to separate it from the positioning groove 343, so as to release the limiting of the box door 2.

[0035] The side wall of the compartment 1 is provided with a groove corresponding to the position of the extrusion rod 344.

[0036] The connecting unit 35 comprises a socket 351 arranged on the side of the sliding block 31, a slot 352 arranged on the side of the moving frame 321, and a limiting part 353 arranged between the moving frame 321 and the socket 351, and the cross section of the socket 351 and the slot 352 is in a T-shaped structure.

[0037] The limiting part 353 comprises a mounting groove arranged in the inner wall of the moving frame 321, a limiting rod 3531 movably arranged in the mounting groove, a limiting ring 3532 arranged outside the limiting rod 3531, and a reset member 3533 arranged at the side of the limiting ring 3532.

[0038] In use, first, the driving member drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the box door 2 to rotate, so that one end of the box door 2 is in contact with the ground, thereby facilitating personnel to load goods into the compartment 1;

[0039] When the loading is completed and the box door 2 needs to be closed, the driving member cooperates with the rotating shaft 12 to drive the box door 2 to rotate to be attached to the compartment 1, and then the pushing member 36 drives the sliding block 31 to slide along the sliding groove, and the sliding block 31 drives the moving frame 321 to move synchronously, thereby driving the sealing strip 322 to be in close contact with the box door 2, so as to seal the connection between the box door 2 and the compartment 1, thereby avoiding leakage of goods;

[0040] When the sealing member 32 is damaged due to long-term use and needs to be replaced, first, the limiting rod 3531 is pulled outward to separate one end thereof from the limiting groove on the bottom surface of the socket 351, and then the moving frame 321 is pulled outward to separate the socket 351 from the insertion groove 352, so that the sealing member 32 is disassembled, the replaced sealing member 32 is placed on one side of the sliding block 31, and the socket 351 and the insertion groove 352 are cooperated to preliminarily install the sealing member 32 on the sliding block 31, and then the limiting ring 3532 and the reset member 3533 are elastically extruded to push the limiting rod 3531 to make one end thereof engage with the limiting groove, so that the moving frame 321 is installed on the sliding block 31, and the replacement of the sealing member 32 is completed.

[0041] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A sealing arrangement for a cargo bed, comprising a bed (1), characterized in that: The side of the compartment (1) is provided with a box door (2), and the side of the box door (2) is provided with a sealing assembly (3). The sealing assembly (3) comprises a sliding block (31) movably arranged on the inner side wall of the compartment (1), a sealing piece (32) arranged on the side of the sliding block (31), a fixed rod (33) arranged on the top of the inner surface of the sealing piece (32), and a locking unit (34) arranged between the fixed rod (33) and the box door (2); and a connecting unit (35) is arranged between the sliding block (31) and the sealing piece (32).

2. A seal for a truck bed as defined in claim 1, wherein: The outer side of the compartment (1) is provided with a protective rod (11).

3. A seal for a truck bed as defined in claim 2, wherein: The inner wall of the compartment (1) is movably connected with a rotating shaft (12), one end of the box door (2) is arranged on the outer side of the rotating shaft (12), and the side of the rotating shaft (12) is provided with a driving piece.

4. A seal arrangement for a truck bed as defined in claim 3, wherein: The inner wall of the compartment (1) is provided with a sliding groove, the sliding block (31) is movably arranged in the sliding groove, and the side of the sliding block (31) is provided with a pushing piece (36).

5. A seal for a truck bed as defined in claim 4, wherein: The sealing piece (32) comprises a moving frame (321) arranged on the side of the sliding block (31) and a sealing strip (322) arranged on the side of the moving frame (321) opposite to the box door (2).

6. A seal arrangement for a truck bed as defined in claim 5, wherein: The number of the locking unit (34) is two, and the two locking units (34) are arranged on the side of the fixed rod (33) oppositely. The locking unit (34) comprises a movable groove arranged on the side of the fixed rod (33), one end of a pressing piece (341) arranged on the side wall of the movable groove, and a positioning rod (342) arranged on the other end of the pressing piece (341), the side of the box door (2) is provided with a positioning groove (343) corresponding to the position of the positioning rod (342), and the side wall of the positioning groove (343) is threadedly connected with a pressing rod (344).

7. A seal arrangement for a truck bed as defined in claim 6, wherein: The side wall of the compartment (1) is provided with a groove corresponding to the position of the pressing rod (344).

8. A seal for a truck bed as defined in claim 7, wherein: The connecting unit (35) comprises a socket (351) arranged on the side of the sliding block (31), a slot (352) arranged on the side of the moving frame (321), and a limiting part (353) arranged between the moving frame (321) and the socket (351). The limiting part (353) comprises a mounting groove arranged in the inner side wall of the moving frame (321), a limiting rod (3531) movably arranged in the mounting groove, a limiting ring (3532) arranged on the outer side of the limiting rod (3531), and a reset piece (3533) arranged on the side of the limiting ring (3532), and the bottom of the socket (351) is provided with a limiting groove with a size matching the end of the limiting rod (3531).