Carriage wallboard and floor connecting structure

Abstract

The utility model belongs to the technical field of carriages, and discloses a carriage wallboard and floor connecting structure which comprises a floor, a wallboard, a sleeve assembly, a corner connector and a connecting assembly, a first fixing piece is fixedly connected to a floor body, and a second fixing piece is fixedly connected to a wallboard body. The lap joint face of the second fixing piece is fixedly connected with the contact face of the first fixing piece through filling glue, the sealing performance between the floor and the wall plate is improved, loosening, abnormal sound and cracking caused by vibration of a carriage are restrained, and the first sleeve and the second sleeve are fixedly embedded in a first connecting hole of the floor body and a first fixing hole of the second fixing piece correspondingly. The corner connector is arranged between the floor body and the second fixing piece, the first connecting piece penetrates through a first through hole of the corner connector and is fixedly connected to the first sleeve through thread glue, the second connecting piece penetrates through a second through hole of the corner connector and is fixedly connected to the second sleeve through thread glue, looseness after threaded connection is prevented, water vapor is prevented from permeating through the sleeves, and electrochemical corrosion is reduced.

Description

Technical Field

[0001] This utility model relates to the field of carriage technology, and in particular to the connection structure between carriage wall panels and floor. Background Technology

[0002] Box trucks, also known as vans, are mainly used for fully enclosed transportation of various goods. They have advantages such as maneuverability, ease of operation, high efficiency, large transport capacity, full utilization of space, safety, and reliability.

[0003] The floor and wall panels of the carriage are connected by welding and self-tapping screws, with simple tape or sealing strips used to seal the screw connections. Under the high-frequency vibrations of long-term operation, the following problems are likely to occur: First, traditional bolted connections are prone to loosening, affecting the connection strength and durability of the carriage, while adhesive seals are prone to cracking under long-term vibration, leading to moisture penetration and accelerated metal corrosion; Second, the poor sealing between the wall panels and the floor causes the carriage to loosen, make abnormal noises, and even crack due to vibration.

[0004] Therefore, there is an urgent need for a connection structure between the carriage wall panels and the floor to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a connection structure between the carriage wall panels and the floor, improve the sealing performance between the floor and the wall panels, suppress the loosening, abnormal noise and cracking caused by carriage vibration, and strengthen the connection strength and fatigue durability of the carriage, and prevent moisture from seeping in through the sleeve.

[0006] To address the aforementioned problems in the existing technology, this utility model adopts the following technical solution:

[0007] The connection structure between the carriage wall panels and floor includes:

[0008] The floor includes a floor body and a first fastener, the first fastener being fixedly connected to the floor body, the floor body having a first connection hole, and the first fastener having a contact surface;

[0009] The wall panel includes a wall panel body and a second fastener. The second fastener is fixedly connected to the wall panel body. The second fastener has a first fastening hole and an overlapping surface. The overlapping surface and the contact surface are fixedly connected by filler adhesive.

[0010] A sleeve assembly includes a first sleeve and a second sleeve, wherein the first sleeve and the second sleeve are respectively fixedly embedded in the first connecting hole and the first fixing hole;

[0011] An angle bracket is disposed between the floor body and the second fixing member, and the angle bracket has a first through hole and a second through hole;

[0012] The connecting assembly includes a first connector and a second connector, wherein the first connector passes through the first through hole and is fixedly connected to the first sleeve by threaded adhesive, and the second connector passes through the second through hole and is fixedly connected to the second sleeve by threaded adhesive.

[0013] Preferably, the contact surface includes a first contact portion, an intermediate contact portion, and a second contact portion. The first contact portion is perpendicular to the intermediate contact portion, and the intermediate contact portion is perpendicular to the second contact portion. The first contact portion and the overlapping surface are sealed together by tape, the intermediate contact portion and the overlapping surface are sealed together by sealant, and the second contact portion and the overlapping surface are sealed together by structural adhesive.

[0014] Preferably, the sealant and the structural adhesive are cured to form an interpenetrating mesh structure.

[0015] Preferably, the connecting assembly further includes a third connector, the first fixing member has a second connecting hole, the second fixing member also has a second fixing hole, and the third connector passes through the second fixing hole and the sealant and is fixedly connected to the second connecting hole.

[0016] Preferably, there are multiple third connectors, multiple second fixing holes and multiple second connecting holes. Along the length direction of the wall panel body, multiple third connectors are spaced apart, and multiple third connectors pass through the corresponding second fixing holes and are fixedly connected to the second connecting holes.

[0017] Preferably, the connecting assembly further includes a fourth connector, the second fixing member is provided with a third fixing hole, the first fixing member is provided with a third connecting hole, and the fourth connector passes through the third fixing hole and is fixedly connected to the third connecting hole.

[0018] Preferably, the sleeve assembly further includes a third sleeve, which is fixedly embedded in the third fixing hole and the third connecting hole, and the third connector is fixedly connected to the third sleeve by threaded adhesive.

[0019] Preferably, the central axis of the first fixing hole is perpendicular to the central axis of the third fixing hole.

[0020] Preferably, the central axis of the first connecting hole is perpendicular to the central axis of the first fixing hole.

[0021] Preferably, there are multiple corner brackets, which are fixedly disposed between the floor body and the second fastener along the length of the wall panel body.

[0022] The beneficial effects of this utility model are as follows:

[0023] The utility model provides a connection structure for the carriage wall panel and floor. The floor includes a floor body and a first fixing member. The first fixing member is fixedly connected to the floor body, and the floor body has a first connecting hole. The first fixing member has a contact surface. The wall panel includes a wall panel body and a second fixing member. The second fixing member is fixedly connected to the wall panel body, and the second fixing member has a first fixing hole. The second fixing member has an overlapping surface, and the overlapping surface and the contact surface are fixedly connected by filler adhesive, which improves the sealing performance between the floor and the wall panel and suppresses loosening, abnormal noise, and cracking caused by carriage vibration. The sleeve assembly includes a first sleeve and a second sleeve, which are respectively fixedly embedded in the first connecting hole and the first fixing hole. An angle bracket is set between the floor body and the second fixing member to strengthen the local rigidity of the carriage connection. At the same time, it adjusts the relative positional relationship between the carriage wall panel and the floor, which facilitates quick adjustment of gap differences and improves assembly accuracy. The corner bracket has a first through hole and a second through hole. The connecting assembly includes a first connector and a second connector. The first connector passes through the first through hole and is fixedly connected to the first sleeve by thread-locking adhesive. The second connector passes through the second through hole and is fixedly connected to the second sleeve by thread-locking adhesive. The thread-locking adhesive prevents loosening after screwing, strengthens the connection strength and fatigue durability of the carriage, prevents moisture from seeping in through the sleeve, reduces electrochemical corrosion, and distributes the axial and radial loads of the connecting assembly to the carriage base material. Attached Figure Description

[0024] Figure 1 A schematic diagram of the connection structure between the carriage wall panels and the floor provided in this embodiment of the utility model;

[0025] Figure 2 A cross-sectional view of the connection structure between the carriage wall panel and the floor provided in an embodiment of this utility model.

[0026] Figure label:

[0027] 1. Floor body; 11. First connecting hole;

[0028] 2. First fastener; 21. First contact portion; 22. Intermediate contact portion; 23. Second contact portion; 24. Third connecting hole;

[0029] 3. Wall panel body;

[0030] 4. Second fastener; 41. First fixing hole; 42. Overlapping surface; 43. Third fixing hole;

[0031] 5. Filler adhesive; 51. Adhesive tape; 52. Sealant; 53. Structural adhesive;

[0032] 61. First sleeve; 62. Second sleeve; 63. Third sleeve;

[0033] 7. Corner code;

[0034] 81. First connector; 82. Second connector; 83. Third connector; 84. Fourth connector. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] 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 below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] like Figures 1-2As shown, in this embodiment, the connection structure between the carriage wall panel and the floor includes a floor, a wall panel, a sleeve assembly, a corner bracket 7, and a connecting assembly. The floor includes a floor body 1 and a first fixing member 2, which is fixedly connected to the floor body 1. The floor body 1 has a first connecting hole 11, and the first fixing member 2 has a contact surface. The wall panel includes a wall panel body 3 and a second fixing member 4, which is fixedly connected to the wall panel body 3. The second fixing member 4 has a first fixing hole 41 and an overlapping surface 42, which is fixedly connected to the contact surface by a filler adhesive 5. The sleeve assembly includes a first sleeve 61 and a second sleeve 62, which are respectively fixedly embedded in the first connecting hole 11 and the first fixing hole 41. The corner bracket 7 is disposed between the floor body 1 and the second fixing member 4, and the corner bracket 7 has a first through hole and a second through hole. The connecting assembly includes a first connector 81 and a second connector 82. The first connector 81 passes through a first through hole and is fixedly connected to the first sleeve 61 by threaded adhesive. The second connector 82 passes through a second through hole and is fixedly connected to the second sleeve 62 by threaded adhesive.

[0040] The first fastener 2 and the second fastener 4 are made of aluminum profiles. The first fastener 2 is fixedly connected to the floor body 1 by welding or other methods, and the second fastener 4 is fixedly connected to the wall panel body 3 by welding or other methods. The floor body 1 is fixed to the vehicle frame, and the wall panel body 3 is fixed to the vehicle body. The filler adhesive 5 is one or more combinations of tape 51, sealant 52, or structural adhesive 53. The second fastener 4 overlaps the first fastener 2, that is, the overlapping surface 42 contacts the contact surface, and is fixed by adhesive 5, so that the first fastener 2 and the second fastener 4 are sealed together to form an adhesive layer, which improves the sealing performance between the floor and the wall panel and suppresses loosening, abnormal noise, and cracking caused by vehicle vibration. The sleeve assembly is made of aluminum alloy with anodized surface and nitrided internal threads. The angle bracket 7 is made of die-cast aluminum, reducing weight by about 40% compared to traditional steel. The first sleeve 61 and the second sleeve 62 are pressed into the first connecting hole 11 and the first fixing hole 41, respectively. The sleeve structure reduces the peak edge stress of the bolt holes by 52%, extending the fatigue life of the panel structure to more than 15 years. The first connecting piece 81 and the second connecting piece 82 are bolts, and thread sealant is applied to the threaded sections of the first connecting piece 81 and the second connecting piece 82. The angle bracket 7 is fixed between the floor body 1 and the second fixing piece 4 using positioning fixtures, strengthening the local rigidity of the carriage connection. At the same time, it adjusts the relative positional relationship between the carriage wall panel and the floor, facilitating quick adjustment of gap differences and improving assembly accuracy. The first connector 81 passes through the first through hole of the corner bracket 7 and is threadedly connected to the internal thread of the first sleeve 61. The first connector 81 and the first sleeve 61 are fixed together with thread-locking adhesive. The second connector 82 passes through the second through hole of the corner bracket 7 and is threadedly connected to the internal thread of the second sleeve 62. The second connector 82 and the second sleeve 62 are fixed together with thread-locking adhesive. This prevents loosening after threading, strengthens the connection strength and fatigue durability of the carriage, prevents moisture from seeping in through the sleeve, reduces electrochemical corrosion, and distributes the axial and radial loads of the connection assembly to the carriage substrate.

[0041] Continue to refer to Figures 1-2The contact surface includes a first contact portion 21, an intermediate contact portion 22, and a second contact portion 23. The first contact portion 21 is perpendicular to the intermediate contact portion 22, and the intermediate contact portion 22 is perpendicular to the second contact portion 23. The first contact portion 21 and the overlapping surface 42 are sealed together by tape 51, the intermediate contact portion 22 and the overlapping surface 42 are sealed together by sealant 52, and the second contact portion 23 and the overlapping surface 42 are sealed together by structural adhesive 53. Tape 51 is butyl tape 51, sealant 52 is silane-modified polyether sealant 52, and structural adhesive 53 is epoxy-polyurethane composite structural adhesive 53. The gap between the first fixing member 2 of the floor and the second fixing member 4 of the wall panel is filled with tape 51 and sealant 52. In this design, adhesive tape 51 is applied to seal the longitudinal tolerance adjustment gap between the first contact portion 21 and the overlapping surface 42, while sealant 52 is filled into the transverse tolerance adjustment gap between the middle contact portion 22 and the overlapping surface 42, forming a continuous sealing ring. The sealant 52 and structural adhesive 53 cure to form an interpenetrating mesh structure. Structural adhesive 53 is applied to the overlapping contact surface between the second contact portion 23 and the overlapping surface 42, forming a complete and long-lasting sealed thermal insulation structure. This creates a composite sealing system between the floor and wall panels, resulting in excellent sealing performance and significantly improving the sealing performance of the vehicle compartment.

[0042] Continue to refer to Figures 1-2 The connecting assembly also includes a third connector 83. The first fixing member 2 has a second connecting hole, and the second fixing member 4 also has a second fixing hole. The third connector 83 passes through the second fixing hole and the sealant 52 and is fixedly connected to the second connecting hole. The third connector 83 is a screw. There are multiple third connectors 83, second fixing holes, and second connecting holes. Multiple third connectors 83 are spaced apart along the length of the wall panel body 3. Each of the multiple third connectors 83 passes through the corresponding second fixing hole and is fixedly connected to the second connecting hole, which can further enhance the connection strength of the carriage.

[0043] Continue to refer to Figures 1-2 The connecting assembly also includes a fourth connector 84. The second fixing member 4 has a third fixing hole 43, and the first fixing member 2 has a third connecting hole 24. The fourth connector 84 passes through the third fixing hole 43 and is fixedly connected to the third connecting hole 24. The sleeve assembly also includes a third sleeve 63, which is fixedly embedded in the third fixing hole 43 and the third connecting hole 24. The third connector 83 is fixedly connected to the third sleeve 63 by thread-locking adhesive. The fourth connector 84 is configured as a bolt, pressing the third sleeve 63 into the third fixing hole 43 and the third connecting hole 24. Thread-locking adhesive is applied to the threaded section of the third connector 83, and the third connector 83 is threadedly connected to the third sleeve 63 and fixed by thread-locking adhesive, further strengthening the connection strength of the carriage, preventing moisture from seeping in through the sleeve, and reducing electrochemical corrosion.

[0044] Continue to refer to Figures 1-2 The central axis of the first fixing hole 41 is perpendicular to the central axis of the third fixing hole 43, and the central axis of the first connecting hole 11 is perpendicular to the central axis of the first fixing hole 41. That is, the central axis of the first connecting member 81 and the central axis of the second connecting member 82 are staggered at 90 degrees. The connecting components used by the floor body 1, the second fixing member 4, and the corner bracket 7 adopt a cross-shaped screw connection layout. The central axis of the second connecting member 82 and the central axis of the third connecting member 83 are staggered at 90 degrees. That is, the third connecting member 83 used by the first fixing member 2 and the second fixing member 4, and the connecting components used by the second fixing member 4 and the corner bracket 7, adopt a cross-shaped screw connection layout. This transforms uniaxial force into multi-directional load dispersion, increasing bending strength by 45%, torsional stiffness by 60%, and the overall modal frequency of the vehicle body by 30%.

[0045] Preferably, there are multiple corner brackets 7, which are fixedly disposed between the floor body 1 and the second fastener 4 along the length of the wall panel body 3. Under the action of multiple corner brackets 7, the local rigidity of the connection between the floor and the wall panel is strengthened, and the relative positional relationship between the floor and the wall panel of the carriage can be adjusted, which facilitates quick adjustment of gap surface difference and improves assembly accuracy.

[0046] The assembly process of the connection structure between the carriage wall panels and floor is as follows:

[0047] First, the floor and frame are fixed together, and the side panel is fixed to the vehicle body. Angle bracket 7 is fixed to the floor body 1 using a positioning fixture. Then, tape 51 is applied to the first contact portion 21, sealant 52 is filled into the middle contact portion 22, and structural adhesive 53 is applied to the second contact portion 23. The wall panel body 3 is then hoisted, and the overlapping surface 42 of the second fastener 4 is overlapped with the mating surface of the first fastener 2. Thread adhesive is applied to the threaded section of the connecting assembly. The floor and wall panel are adjusted using the sleeve assembly and angle bracket 7. After the gap difference is adjusted, the screws are tightened and loaded to the target torque. Based on the positioning fixture installed on the frame, the third connecting hole 24 of the first fastener 2 and the third fixing hole 43 of the second fastener 4 are precisely positioned. Then, structural adhesive 53 is applied, and a rubber mallet is used to press the fourth connector 84 threaded into the hole of the third sleeve 63, ensuring the flange is fully embedded. The screws are tightened and loaded to the target torque, and cured for 24 hours. Finally, the third connector 83 passes through the second fixing hole and is fixedly connected to the second connecting hole, completing the assembly.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A connection structure between the carriage wall panels and the floor, characterized in that, include: The floor includes a floor body (1) and a first fastener (2), the first fastener (2) being fixedly connected to the floor body (1), the floor body (1) having a first connection hole (11), and the first fastener (2) having a contact surface; The wall panel includes a wall panel body (3) and a second fastener (4). The second fastener (4) is fixedly connected to the wall panel body (3). The second fastener (4) has a first fixing hole (41) and an overlapping surface (42). The overlapping surface (42) and the contact surface are fixedly connected by filler glue (5). The sleeve assembly includes a first sleeve (61) and a second sleeve (62), wherein the first sleeve (61) and the second sleeve (62) are respectively fixedly embedded in the first connecting hole (11) and the first fixing hole (41). Angle bracket (7) is disposed between the floor body (1) and the second fastener (4), and the angle bracket (7) has a first through hole and a second through hole; The connecting assembly includes a first connector (81) and a second connector (82). The first connector (81) passes through the first through hole and is fixedly connected to the first sleeve (61) by threaded adhesive. The second connector (82) passes through the second through hole and is fixedly connected to the second sleeve (62) by threaded adhesive.

2. The connection structure between the carriage wall panel and the floor according to claim 1, characterized in that, The contact surface includes a first contact portion (21), an intermediate contact portion (22), and a second contact portion (23). The first contact portion (21) is perpendicular to the intermediate contact portion (22), and the intermediate contact portion (22) is perpendicular to the second contact portion (23). The first contact portion (21) and the overlapping surface (42) are sealed together by tape (51). The intermediate contact portion (22) and the overlapping surface (42) are sealed together by sealant (52). The second contact portion (23) and the overlapping surface (42) are sealed together by structural adhesive (53).

3. The connection structure between the carriage wall panel and the floor according to claim 2, characterized in that, The sealant (52) and the structural adhesive (53) cure to form an interpenetrating mesh structure.

4. The connection structure between the carriage wall panel and the floor according to claim 1, characterized in that, The connecting assembly further includes a third connector (83), the first fixing member (2) has a second connecting hole, the second fixing member (4) also has a second fixing hole, and the third connector (83) passes through the second fixing hole and the sealant (52) and is fixedly connected to the second connecting hole.

5. The connection structure between the carriage wall panel and the floor according to claim 4, characterized in that, There are multiple third connectors (83), second fixing holes and second connecting holes. Along the length direction of the wall panel body (3), multiple third connectors (83) are spaced apart. Multiple third connectors (83) pass through the corresponding second fixing holes and are fixedly connected to the second connecting holes.

6. The connection structure between the carriage wall panel and the floor according to claim 5, characterized in that, The connecting assembly further includes a fourth connector (84), the second fixing member (4) is provided with a third fixing hole (43), the first fixing member (2) is provided with a third connecting hole (24), and the fourth connector (84) passes through the third fixing hole (43) and is fixedly connected to the third connecting hole (24).

7. The connection structure between the carriage wall panel and the floor according to claim 6, characterized in that, The sleeve assembly further includes a third sleeve (63), which is fixedly embedded in the third fixing hole (43) and the third connecting hole (24), and the third connector (83) is fixedly connected to the third sleeve (63) by threaded adhesive.

8. The connection structure between the carriage wall panel and the floor according to claim 6, characterized in that, The central axis of the first fixing hole (41) is perpendicular to the central axis of the third fixing hole (43).

9. The connection structure between the carriage wall panel and the floor according to claim 1, characterized in that, The central axis of the first connecting hole (11) is perpendicular to the central axis of the first fixing hole (41).

10. The connection structure between the carriage wall panel and the floor according to claim 1, characterized in that, There are multiple corner brackets (7), and multiple corner brackets (7) are fixedly installed between the floor body (1) and the second fastener (4) along the length direction of the wall panel body (3).

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