A type of side-curtain semi-trailer with sliding pillars

Abstract

This utility model provides a side-curtain semi-trailer cargo box sliding pillar, belonging to the technical field of trailer cargo box technology. It includes a long shell, an inner pillar, and a limiter. A locking assembly is connected to the lower end of the long shell, which engages with a lock on the floor assembly. The interior of the long shell has a storage cavity extending along its length, with an entrance / exit penetrating the shell at its upper end. The inner pillar slides within the storage cavity, and a sliding frame is connected to its upper end. The sliding frame is located outside the entrance / exit and has a pulley assembly for connecting to the roof assembly. The limiter is movably connected between the long shell and the inner pillar to restrict relative sliding between them. This utility model provides a side-curtain semi-trailer cargo box sliding pillar that eliminates the safety hazard by preventing the locking assembly at the lower end of the sliding pillar from disengaging from the lock on the floor assembly when the roof assembly is raised.

Description

Technical Field

[0001] This utility model belongs to the field of trailer body technology, and more specifically, it relates to a side curtain type semi-trailer body sliding column. Background Technology

[0002] Existing curtain-type semi-trailer bodies have multiple sliding pillars between the sides of the roof assembly and the floor assembly. These pillars are connected by side panels. Each pillar has a pulley assembly at the top and a locking assembly at the bottom. In operation, the pulley assembly slides within a track in the roof assembly, while the locking assembly engages with a lock on the floor assembly. Currently, to meet market demands, manufacturers are upgrading semi-trailer roof assemblies to lift-up roofs for easier forklift loading and unloading. However, the existing sliding pillars, limited by their length, require the locking assembly to disengage from the lock on the floor assembly when the roof assembly is raised, leaving the pillars suspended. During loading and unloading, these suspended pillars are susceptible to swaying due to environmental factors, posing a safety hazard. Therefore, improvements to the existing sliding pillars are urgently needed to eliminate this safety risk. Utility Model Content

[0003] The purpose of this utility model is to provide a side curtain type semi-trailer cargo box sliding column, which aims to solve the problem that the existing sliding column is not compatible with the lifting roof assembly, which can easily cause safety hazards.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a side-curtain type semi-trailer cargo box sliding column, comprising:

[0005] The long housing has a locking assembly connected to its lower end. The locking assembly is used to cooperate with a lock on the base plate assembly. The interior of the long housing has a storage cavity arranged along its length. The upper end of the storage cavity has an entrance and exit that penetrate the long housing.

[0006] An inner column is slidably disposed within the storage cavity. The upper end of the inner column is connected to a sliding frame, which is located outside the entrance / exit. The sliding frame is equipped with a pulley assembly for connecting to the roof assembly.

[0007] A limiter is movably connected between the elongated housing and the inner column to limit the relative sliding between the elongated housing and the inner column.

[0008] In one possible implementation, the elongated shell includes:

[0009] The outer protective plate has a first flange on both sides that extends inward, and a first U-shaped groove is provided between the two first flanges and the outer protective plate.

[0010] An inner guard plate is disposed on the inner side of the outer guard plate. Both sides of the inner guard plate are provided with a second flange that is disposed towards one side of the outer guard plate. The inner guard plate is inserted into the first U-shaped groove. The first flange and the second flange located on the same side are fixedly connected. The storage cavity is formed between the outer guard plate and the inner guard plate.

[0011] In one possible implementation, the upper end of the elongated shell is provided with a connecting hole extending laterally, and the upper end of the inner column is provided with a plurality of limiting holes spaced from top to bottom. The limiting device includes a limiting bolt, which is disposed through the connecting hole and one of the limiting holes, and the tail of the limiting bolt is bolted with a limiting block.

[0012] In one possible implementation, the first flange is perpendicular to the outer guard plate, and multiple brackets for supporting the guard plate are spaced apart along the length of the two first flanges.

[0013] In one possible implementation, the locking component includes:

[0014] A longitudinal mounting plate is connected to the first U-shaped groove and located at the lower end of the outer protective plate. The middle part of the longitudinal mounting plate has a longitudinally arranged protrusion. The protrusion protrudes to the side away from the outer protective plate to form a second U-shaped groove on the inner side of the longitudinal mounting plate.

[0015] An insert plate, which is slidably disposed in the second U-shaped groove;

[0016] A driving component is connected to the longitudinal mounting plate. The driving end of the driving component is connected to the insert plate. The driving component is used to drive the insert plate to move up and down so that the insert plate is locked or disengaged from the first connection part of the lock on the base plate assembly.

[0017] In one possible implementation, the driving component includes:

[0018] A rotating arm is disposed in the second U-shaped groove, and the upper end of the rotating arm is hinged to the longitudinal mounting plate.

[0019] A handle is provided in the second U-shaped groove and located on the outside of the rotating arm. The middle part of the handle is hinged to the lower end of the rotating arm. A clearance window is provided on the outer guard plate to allow the handle to pass through.

[0020] A connecting arm is slidably disposed within the second U-shaped groove. The upper end of the connecting arm is hinged to the lower end of the handle, and the lower end of the connecting arm is connected to the insert plate.

[0021] In one possible implementation, a damping component is provided between the rotating arm and the longitudinal mounting plate, the damping component comprising:

[0022] A sliding rod, the upper end of which is hinged to the longitudinal mounting plate, and the lower end of which slides through the rotating arm;

[0023] A damping spring is inserted through the slide rod and abuts against the rotating arm and the longitudinal mounting plate.

[0024] In one possible implementation, the lower ends of the protrusion are hinged with longitudinal rods on both sides, the lower ends of the two longitudinal rods extend downward to the lower part of the outer guard plate, and a crossbar is provided between the lower ends of the two longitudinal rods. The crossbar is used to cooperate with the second connection part of the lock on the base plate assembly.

[0025] In one possible implementation, a limiting baffle is provided at the lower end of the longitudinal mounting plate. The limiting baffle is located between the longitudinal mounting plate and the outer guard plate. The lower end of the limiting baffle is flush with the crossbar. The limiting baffle is used to limit the rotation range of the longitudinal bar.

[0026] In one possible implementation, the connecting arm has a longitudinal guide groove along its length at its middle portion, the longitudinal guide groove extending laterally through the connecting arm, and a limiting rod is laterally provided in the second U-shaped groove corresponding to the longitudinal guide groove. The limiting rod passes through the longitudinal guide groove to limit the movement direction of the connecting arm, and both ends of the limiting rod extend outward through the protrusion. The upper ends of the two longitudinal rods are respectively rotatably connected to the two ends of the limiting rod.

[0027] The beneficial effects of the side curtain type semi-trailer sliding column provided by this utility model are as follows: Compared with the prior art, the side curtain type semi-trailer sliding column of this utility model, through the sliding cooperation between the long strip shell and the inner column, allows the sliding column to adapt to the raising and lowering of the roof assembly. When the roof assembly needs to be raised, the limiter can be removed from the long strip shell and the inner column first, so that the inner column and the long strip shell can slide relative to each other. During the process of the roof assembly rising, the roof assembly can pull the inner column upward through the sliding frame, so that the inner column slides upward in the storage cavity, and the upper end of the inner column extends out from the entrance and exit of the storage cavity to adapt to the change in the height of the roof. After the roof assembly rises to the predetermined height, the limiter is connected to the long strip shell and the inner column again to restrict the movement of the long strip shell and the inner column, so that the positional relationship between the long strip shell and the inner column remains stable. This utility model provides a side curtain type semi-trailer cargo sliding pillar. When the roof assembly is raised, it is not necessary to disengage the locking component at the lower end of the sliding pillar from the lock on the floor assembly. This avoids the situation where the lower locking component of the existing sliding pillar is disengaged from the floor lock due to the limited length, resulting in a suspended state, thus eliminating safety hazards. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A three-dimensional structural diagram of a sliding column for a side-curtain semi-trailer cargo box provided for an embodiment of this utility model;

[0030] Figure 2 Exploded view of the elongated shell and inner column provided for an embodiment of this utility model;

[0031] Figure 3 Exploded view of the elongated shell and locking assembly provided for embodiments of this utility model;

[0032] Figure 4 A schematic diagram showing the correspondence between the locking component and the lock provided in an embodiment of this utility model;

[0033] Figure 5 A schematic diagram of the connection structure of the damping component provided in an embodiment of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Long shell; 11. Outer protective plate; 111. First flange; 112. Extension section; 113. First hole; 114. Clearance window; 12. Inner protective plate; 121. Second flange; 122. Second hole; 2. Inner column; 21. Column main plate; 22. First bend; 23. Second bend; 24. Limiting hole; 3. Limiter; 31. Limiting bolt; 32. Limiting block; 4. Sliding frame; 5. Pulley assembly; 6. U-shaped frame; 7. Locking assembly; 71. Longitudinal installation Plate; 711, Protrusion; 712, Second U-shaped groove; 72, Insert plate; 73, Rotating arm; 731, Longitudinal through groove; 732, Horizontal plate; 74, Handle; 75, Connecting arm; 751, Longitudinal guide groove; 76, Slide rod; 761, Connector; 77, Damping spring; 78, Limiting baffle; 79, Vertical rod; 701, First rotating shaft; 702, Second rotating shaft; 703, Horizontal rod; 704, Limiting rod; 8, Lock; 81, Fixing block; 82, First slot; 83, Second slot. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0038] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] Please see Figures 1 to 4 This invention provides a side curtain type semi-trailer cargo sliding column. The side curtain type semi-trailer cargo sliding column includes a long shell 1, an inner column 2, and a limiter 3. The lower end of the long shell 1 is connected to a locking assembly 7, which engages with a lock 8 on the floor assembly. The long shell 1 has a storage cavity along its length, with an entrance / exit at its upper end. The inner column 2 is slidably disposed within the storage cavity, and its upper end is connected to a sliding frame 4 located outside the entrance / exit. The sliding frame 4 has a pulley assembly 5 for connecting to the roof assembly. The limiter 3 is movably connected between the long shell 1 and the inner column 2 to restrict the relative sliding between them.

[0041] This utility model provides a sliding column for a side curtain semi-trailer cargo box. Compared with the prior art, the sliding cooperation between the long shell 1 and the inner column 2 allows the sliding column to adapt to the lifting and lowering of the roof assembly. When the roof assembly needs to be raised, the limiter 3 can be removed from the long shell 1 and the inner column 2, allowing the inner column 2 and the long shell 1 to slide relative to each other. During the process of the roof assembly being raised, the roof assembly can pull the inner column 2 upward through the sliding frame 4, causing the inner column 2 to slide upward in the storage cavity, so that the upper end of the inner column 2 extends out from the entrance and exit of the storage cavity to adapt to the change in the height of the roof. After the roof assembly is raised to the predetermined height, the limiter 3 is then connected to the long shell 1 and the inner column 2 to restrict the movement of the long shell 1 and the inner column 2, so that the positional relationship between the long shell 1 and the inner column 2 remains stable. The present invention provides a side curtain type semi-trailer cargo sliding pillar, which eliminates the need for the locking component 7 at the lower end of the sliding pillar to disengage from the lock 8 provided on the bottom plate assembly when the roof assembly is raised. This avoids the situation where the lower locking component 7 is disengaged from the bottom plate lock 8 and is in a suspended state due to the limited length of the existing sliding pillar, thereby eliminating safety hazards.

[0042] In some embodiments, please refer to Figures 1 to 2The elongated shell 1 adopts a double-layer structure design composed of an outer protective plate 11 and an inner protective plate 12. In application, the outer protective plate 11 is located on the outer side of the vehicle, and the inner protective plate 12 is located on the inner side of the vehicle compartment. In this embodiment, both the outer protective plate 11 and the inner protective plate 12 are longitudinally arranged elongated strip-shaped sheet metal parts. A first flange 111 extending inwards is provided on both sides of the outer protective plate 11. In this embodiment, the first flange 111 is perpendicular to the outer protective plate 11, and a first U-shaped groove is provided between the two first flanges 111 and the outer protective plate 11. The overall length of the inner protective plate 12 is shorter than... The outer protective plate 11 has a second flange 121 on both sides of the inner protective plate 12, which is perpendicular to the inner protective plate 12. During installation, the inner protective plate 12 is inserted into the first U-shaped groove, and the upper end of the inner protective plate 12 is flush with the upper end of the outer protective plate 11. The two second flanges 121 of the inner protective plate 12 are inserted between the two first flanges 111. The first flanges 111 and the second flanges 121 on the same side are fixed by riveting, forming a storage cavity between the outer protective plate 11 and the inner protective plate 12. The inner column 2 is slidably disposed between the outer protective plate 11 and the inner protective plate 12.

[0043] In this embodiment, the inner column 2 is formed by bending a long strip of material. Specifically, the inner column 2 includes a column main board 21. On both sides of the column main board 21, a third flange is provided facing outwards towards the outer guard plate 11. The third flange includes a first bent portion 22 and a second bent portion 23 connected to each other. The first bent portion 22 is connected between the column main board 21 and the second bent portion 23, and is perpendicular to the column main board 21. The second bent portion 23 bends towards both sides of the column main board 21 relative to the first bent portion 22. The angle between the second bend 23 and the first bend 22 is an obtuse angle. The distance between the edges of the two second bends 23 is matched with the distance between the two second flanges 121. The distance from the edge of the second bend 23 to the end of the main column 21 near the inner guard plate 12 is matched with the distance from the outer guard plate 11 to the inner guard plate 12. Through the above settings, the inner column 2 has multiple points of support in the horizontal direction of the storage cavity through the second flanges 121 and the main column 21, thereby preventing the inner column 2 from tilting during the lifting process.

[0044] In this embodiment, the sliding frame 4 connected to the upper end of the inner column 2, the pulley assembly 5 connected to the sliding frame 4, and the connection relationship between the pulley assembly 5 and the roof assembly are all existing technologies and are not improvements of this utility model, so they will not be described in detail here.

[0045] In this embodiment, a connecting hole is provided transversely through the upper end of the elongated shell 1. The connecting hole includes a first hole 113 disposed on the outer protective plate 11 and a second hole 122 disposed on the inner hole. The first hole 113 is a longitudinally arranged elongated hole, and the second hole 122 is a round hole or a square hole. There is one first hole 113 and one or more second holes 122. When there are multiple second holes 122, all of the multiple second holes 122 are within the forward projection range of the first hole 113. In this embodiment, multiple limiting holes 24 are provided at intervals from top to bottom at the upper end of the inner column 2. The limiting holes 24 are square holes or round holes transversely through the column main plate 21.

[0046] The limiter 3 mainly consists of a limit bolt 31 and a limit block 32. The limit bolt 31 passes through the connecting hole of the elongated shell 1 and a corresponding limit hole 24 on the inner column 2. When the inner column 2 slides to a suitable position, the limit bolt 31 is passed through the corresponding hole, and then the limit block 32 is bolted to the end of the bolt. The function of the limit block 32 is to prevent the limit bolt 31 from falling out of the hole, thereby fixing the elongated shell 1 and the inner column 2 relative to each other and restricting their relative sliding. In this embodiment, the limit block 32 is set on the same side of the outer guard plate 11 and located in the first hole 113. In order to improve the limiting effect of the limit block 32, the thickness of the limit block 32 is set to be greater than the thickness of the outer guard plate 11. In application, the outer end of the limit block 32 protrudes out of the first hole 113, so that the limit block 32 cooperates with the side wall of the first hole 113 to restrict the relative movement of the elongated shell 1 and the inner column 2.

[0047] In this embodiment, an extension section 112 is connected to the first flange 111. The extension section 112 bends outward from the first flange 111 and is perpendicular to the first flange 111. Multiple brackets for supporting the railing are spaced apart along the length of the first flange 111. In this embodiment, the bracket is a U-shaped frame 6 with its opening facing upward. The two side plates of the U-shaped frame 6 are perpendicular to the first flange 111. In application, the U-shaped frame 6 is fixed between the first flange 111 and the extension section 112 by welding. In this embodiment, by setting the extension section 112 so that it is perpendicular to the first flange 111, and by welding the U-shaped frame 6 between the extension section 112 and the first flange 111, the extension section 112, the first flange 111, and the U-shaped frame 6 together form a stable triangular support structure, thereby effectively distributing the weight and external forces borne by the railing.

[0048] In actual production, please refer to Figure 4The lock 8 on the base plate assembly includes a fixing block 81, which is welded and fixed to the base plate assembly. The upper end of the fixing block 81 is provided with a first connecting part, which is a first slot 82 with the opening facing upward. The lower end of the outer side wall of the fixing block 81 is provided with a second connecting part, which is a second slot 83 with the opening facing outward.

[0049] In some embodiments, please refer to Figure 3 The aforementioned locking assembly 7 includes a longitudinal mounting plate 71, an insert plate 72, and a driving component. The longitudinal mounting plate 71 is connected to the first U-shaped groove and located at the lower end of the outer guard plate 11. It is fixed to the outer guard plate 11 by riveting. The middle part of the longitudinal mounting plate 71 has a longitudinally arranged protrusion 711, which protrudes away from the outer guard plate 11. A second U-shaped groove 712 is formed on the inner side of the longitudinal mounting plate 71. The width of the insert plate 72 is adapted to the width of the second U-shaped groove 712. The insert plate 72 is slidably disposed in the second U-shaped groove 712. The driving component is connected to the longitudinal mounting plate 71. The driving end of the driving component is connected to the insert plate 72. The driving component drives the insert plate 72 to move downward, so that the insert plate 72 can be inserted into the first slot 82 of the lock 8. The insertion plate 72 and the first slot 82 cooperate to restrict movement. The driving component drives the insert plate 72 to move upward, so that the insert plate 72 can be disengaged from the first slot 82 of the lock 8.

[0050] Specifically, the aforementioned driving components include a rotating arm 73, a handle 74, and a connecting arm 75. The rotating arm 73 is disposed within the second U-shaped groove 712, and its upper end is hinged to the protrusion 711 via a first rotating shaft 701 horizontally disposed within the second U-shaped groove 712. The handle 74 is disposed within the second U-shaped groove 712 and located outside the rotating arm 73. The middle part of the handle 74 is hinged to the lower end of the rotating arm 73. An obstacle window 114 is provided on the outer guard plate 11 corresponding to the handle 74 for the handle 74 to pass through outwards. The connecting arm 75 is slidably disposed within the second U-shaped groove 712, and its upper end is hinged to the lower end of the handle 74 via a second rotating shaft 702. The lower end of the connecting arm 75 is riveted to a fixed insert plate 72.

[0051] In application, the operator pulls the upper end of the handle 74 outward through the clearance window 114 on the outer guard plate 11. The handle 74 will drive the rotating arm 73 to rotate outward. At the same time, the operator rotates the handle 74 downward around the hinge point with the rotating arm 73, and the lower end of the handle 74 will rotate upward. This causes the connecting arm 75, which is hinged at the lower end of the handle 74, to move the insert plate 72 upward, so that the shovel plate disengages from the first slot 82 of the lock 8. When the insert plate 72 needs to be inserted into the first slot 82, the operator first aligns the insert plate 72 with the first slot 82, and then reverses the operation of the handle 74 to make the insert plate 72 slide downward and be inserted into the first slot 82.

[0052] In this embodiment, please refer to Figure 3 and Figure 5 A damping component is provided between the rotating arm 73 and the longitudinal mounting plate 71. Specifically, the damping component includes a slide rod 76 and a damping spring 77. In application, a longitudinal through groove 731 is provided in the middle of the rotating arm 73. A through hinge hole is provided on both the left and right side walls of the upper end of the longitudinal through groove 731. The hinge hole is a longitudinally arranged elongated hole. The first rotating shaft 701 is inserted through the hinge hole. The slide rod 76 is located in the longitudinal through groove 731 of the rotating arm 73. A connecting rod is provided at the upper end of the slide rod 76. The connector 761 is mounted on the first rotating shaft 701. The first rotating shaft 701 enables the slide rod 76 to be hinged to the upper longitudinal mounting plate 71. A horizontal plate 732 perpendicular to the bottom surface of the longitudinal through groove 731 is provided in the middle. A through hole is provided on the horizontal plate 732. The lower end of the slide rod 76 passes through and extends to the bottom of the through hole. In this embodiment, the diameter of the slide rod 76 is smaller than the diameter of the through hole. When the rotating arm 73 rotates, the slide rod 76 can slide relative to the horizontal plate 732.

[0053] In this embodiment, the damping spring 77 is a helical spring. The damping spring 77 passes through the slide rod 76 and abuts against the connector 761 of the slide rod 76 and the cross plate 732. In application, when the operator operates the handle 74 to rotate the rotating arm 73, the slide rod 76 slides within the longitudinal through groove 731, and the damping spring 77 is compressed or extended, providing damping for the rotation of the rotating arm 73. The damping force generated by the damping spring 77 allows the operator to obtain a more comfortable and tactile operating feel when pulling the handle 74 to control the rotation of the rotating arm 73, avoiding loss of control or misoperation due to excessive rotation of the rotating arm 73, thus improving the accuracy and safety of operation. Simultaneously, the damping component effectively slows down the rotation speed of the rotating arm 73, making the locking or disengaging operation of the insert plate 72 more stable with the base plate assembly lock 8, reducing the impact and vibration caused by rapid movements, reducing wear between components, and extending the service life of each component of the locking assembly 7.

[0054] In some embodiments, please refer to Figure 3 and Figure 4 The lower ends of the protrusion 711 are hinged with vertical rods 79 on both sides, and both vertical rods 79 are located below the inner guard plate 12. The lower ends of the two vertical rods 79 extend downward to the lower end of the outer guard plate 11. A crossbar 703 is provided between the lower ends of the two vertical rods 79. The crossbar 703 is used to engage with the second slot 83 of the lock 8. In application, by rotating the vertical rods 79, the crossbar 703 can be inserted into or pulled out of the second slot 83, thereby restricting the longitudinal movement of the elongated housing 1.

[0055] Furthermore, to prevent the crossbar 703 from dislodging from the second slot 83 due to vibration during vehicle operation, a limiting baffle 78 is provided at the lower end of the longitudinal mounting plate 71. The limiting baffle 78 is located between the longitudinal mounting plate 71 and the outer guard plate 11, with its lower end flush with the crossbar 703. When the crossbar 703 is engaged in the second slot 83, the limiting baffle 78 will flatten against the outer wall of the fixing block 81, blocking the opening of the second slot 83 and restricting the longitudinal bar 79 from rotating outward, thereby preventing the crossbar 703 from dislodging from the second slot 83 and ensuring the stability of the longitudinal fixation of the elongated housing 1.

[0056] In some embodiments, a longitudinal guide groove 751 is provided in the middle of the connecting arm 75 along its length direction. The longitudinal guide groove 751 extends laterally through the connecting arm 75. A limiting rod 704 is provided laterally in the second U-shaped groove 712 corresponding to the longitudinal guide groove 751. The limiting rod 704 passes through the longitudinal guide groove 751 and is used to limit the movement direction of the connecting arm 75. Both ends of the limiting rod 704 extend outward and pass through the protrusion 711. The upper ends of the two longitudinal rods 79 are respectively rotatably connected to the two ends of the limiting rod 704.

[0057] In this embodiment, the limiting rod 704, on the one hand, restricts the connecting arm 75 to move only up and down along the length direction of the longitudinal guide groove 751 by cooperating with the longitudinal guide groove 751, so as to avoid the connecting arm 75 from lateral deviation or shaking during the sliding process; on the other hand, the limiting rod 704 also provides an installation base for the hinge connection between the longitudinal rod 79 and the protrusion 711.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A side curtain semi-trailer body slide column, characterized in that, The utility model relates to a long shell (1) is connected with the locking assembly (7) of lower end, the locking assembly (7) is used to cooperate with the lock (8) on the bottom plate assembly, the inside of long shell (1) has the article cavity along its length direction arrangement, the upper end of article cavity is equipped with the entrance and exit of through long shell (1), the inside of long shell (1) is equipped with the article cavity along its length direction arrangement, The utility model relates to a long shell (1) is connected with the locking assembly (7) of lower end, the locking assembly (7) is used to cooperate with the lock (8) on the bottom plate assembly, the inside of long shell (1) has the article cavity along its length direction arrangement, the upper end of article cavity is equipped with the entrance and exit of through long shell (1), the inside of long shell (1) is equipped with the article cavity along its length direction arrangement, The utility model relates to a long shell (1) is connected with the locking assembly (7) of lower end, the locking assembly (7) is used to cooperate with the lock (8) on the bottom plate assembly, the inside of long shell (1) has the article cavity along its length direction arrangement, the upper end of article cavity is equipped with the entrance and exit of through long shell (1), the inside of long shell (1) is equipped with the article cavity along its length direction arrangement, The utility model relates to a long shell (1) includes:

2. A sliding column for a side curtain type semi-trailer vehicle body according to claim 1, wherein The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes:

3. A sliding column for a side curtain type semi-trailer body as defined in claim 1, characterized in that The utility model relates to a long shell (1) includes:

4. A sliding column for a side curtain type semi-trailer body as defined in claim 2, characterized in that The utility model relates to a long shell (1) includes:

5. A sliding column for a side curtain type semi-trailer body as defined in claim 2, characterized in that The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes:

6. A sliding column for a side curtain type semi-trailer body as claimed in claim 5, characterized in that The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to a long shell (1) includes: The utility model relates to the drive component of long shell (1) includes: The utility model relates to the drive component of long shell ( 1) includes: The utility model relates to the drive component of long shell ( 1) including: The utility model relates to the drive component of long shell ( 1) including: The drive component of long shell (1) includes: The drive component of long shell (1) includes: The drive component of long shell ( 1) including: The drive component of long shell ( 1) including: The drive component of long shell A rotating arm (73) is arranged in the second U-shaped groove (712), and an upper end of the rotating arm (73) is hingedly connected to the longitudinal mounting plate (71); A handle (74) is arranged in the second U-shaped groove (712) and located outside the rotating arm (73), a middle part of the handle (74) is hingedly connected to a lower end of the rotating arm (73), and a corresponding avoiding window (114) for the handle (74) is formed in the outer side guard plate (11); A connecting arm (75) is slidingly arranged in the second U-shaped groove (712), an upper end of the connecting arm (75) is hingedly connected to a lower end of the handle (74), and a lower end of the connecting arm (75) is connected to the plug plate (72).

7. A sliding column for a side curtain type semi-trailer body as claimed in claim 6, characterized in that A damping component is arranged between the rotating arm (73) and the longitudinal mounting plate (71), and the damping component comprises: A slide rod (76) is hingedly connected to the longitudinal mounting plate (71) at an upper end, and a lower end of the slide rod (76) slidingly penetrates the rotating arm (73); A damping spring (77) penetrates the slide rod (76) and abuts between the rotating arm (73) and the longitudinal mounting plate (71).

8. A sliding column for a side curtain type semi-trailer vehicle body according to claim 6, wherein Two longitudinal rods (79) are hingedly connected to both sides of a lower end of the protruding part (711), lower ends of the two longitudinal rods (79) extend downward below the outer side guard plate (11), and a horizontal rod (703) is arranged between the lower ends of the two longitudinal rods (79), and the horizontal rod (703) is used for cooperating with a second connecting part of a lock (8) on a bottom plate assembly.

9. A sliding column for a side curtain semi-trailer body as claimed in claim 8, characterised in that, A limiting baffle (78) is arranged at a lower end of the longitudinal mounting plate (71), the limiting baffle (78) is located between the longitudinal mounting plate (71) and the outer side guard plate (11), a lower end of the limiting baffle (78) is flush with the horizontal rod (703), and the limiting baffle (78) is used for limiting a rotating range of the longitudinal rod (79).

10. A sliding column for a side curtain type semi-trailer vehicle body according to claim 8, wherein A longitudinal guide groove (751) is arranged in a middle part of the connecting arm (75) along a length direction of the connecting arm (75), the longitudinal guide groove (751) transversely penetrates the connecting arm (75), a limiting rod (704) is transversely arranged in the second U-shaped groove (712) and corresponds to the longitudinal guide groove (751), the limiting rod (704) penetrates the longitudinal guide groove (751) and is used for limiting a moving direction of the connecting arm (75), and both ends of the limiting rod (704) extend outward and penetrate the protruding part (711), and upper ends of the two longitudinal rods (79) are respectively hingedly connected to both ends of the limiting rod (704).

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