Self-locking semitrailer stand column

Abstract

A self-locking semitrailer stand column comprises a stand column body, a stand column fixing structure, a door stop, a door stop limiting structure and a door stop locking structure. The stand column body is vertically arranged. The stand column fixing structure is fixedly installed on the edge beam and used for fixedly supporting the bottom of the stand column body. The door shield is installed on the stand column body in an up-down sliding mode and used for locking the stand column body and the edge beam together. The door stop limiting structure is fixedly arranged on the stand column body and used for limiting movement of the door stop on the stand column body. The door shield locking structure is fixedly arranged on the edge beam, penetrates through the lower side portion of the stand column body and is used for being matched with the door shield in a clamped mode so as to lock the stand column body. The stand column can be automatically locked, and the stand column is firmly fixed, does not loosen and is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a self-locking semi-trailer column. Background Art

[0002] The semi-trailer column is an important part of the warehouse fence and the railing semi-trailer. The existing semi-trailer column is basically fixed by drilling a hole on the side beam, welding a column fixing box at the hole, then assembling the column into the column fixing box, and locking the column by the fastening bolts on the column fixing box.

[0003] This fixing method requires a certain amount of clearance to be reserved between the lower part of the column and the column fixing box to facilitate the assembly of the column. After assembly, the column is locked with the fastening bolts on the column fixing box. During the operation of the semi-trailer with this column structure, the fastening bolts are easy to loosen, causing the column to loosen, resulting in unstable fixation of the loaded goods, deflection of the goods, and prone to safety problems such as vehicle deflection and rollover. At the same time, loose columns will cause deformation and cracking of matching parts, affecting customer operations, causing certain troubles to customers and causing losses to the company. In addition, when disassembling this column, the fastening bolts need to be loosened before the column can be removed. Disassembly is also more complicated and less efficient when loading different goods.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The purpose of the utility model is to provide a self-locking semi-trailer column in view of the deficiencies in the prior art. The utility model can solve the problem of looseness and inconvenience in disassembly of the market warehouse fence and the railing semi-trailer column.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a self-locking semi-trailer column, including a column body, a column fixing structure, a door stop, a door stop limiting structure and a door stop locking structure;

[0007] The column body is arranged vertically;

[0008] The column fixing structure is fixedly installed on the side beam and is used to fix the bottom of the supporting column body;

[0009] The door stopper is slidably mounted on the column body and is used to lock the column body and the side beam together;

[0010] The door stop limiting structure is fixedly arranged on the column body, and is used to limit the movement of the door stop on the column body;

[0011] The door stop locking structure is fixedly arranged on the side beam and penetrates the lower side of the column body, and is used for engaging with the door stop to lock the column body.

[0012] Based on the above, the column body is a U-shaped box structure with an open outside. A rotating pin is welded between the bottom of the two side plates of the column body. The two ends of the rotating pin pass through the two side plates of the column body respectively. A square hole is opened on the lower side of the inner side plate of the column body for the door stop locking structure to pass through.

[0013] Based on the above, the column fixing structure includes two column fixing plates, which are welded to the side beams at intervals on the left and right. A V-shaped notch that is open on the outside and slanted upward is provided on the column fixing plate. The bottom of the V-shaped notch is a semicircular hole. The column body is vertically placed between the two column fixing plates, and the two ends of the rotating pin are respectively supported in the semicircular holes at the bottom of the two V-shaped notches.

[0014] Based on the above, the door stopper includes a vertically arranged long strip stopper, the inner side surface of the long strip stopper is a plane, and a step protrusion is integrally formed on the upper middle side of the outer side surface of the long strip stopper. The long strip stopper is a wedge-shaped block that is thick on the top and thin on the bottom from its lower end to the lower part of the step protrusion.

[0015] Based on the above, the door stop limiting structure includes two door stop limiting plates welded at an upper and lower interval on the lower side of the column body, the lower door stop limiting plate is higher than the square hole, a limiting notch with an inner opening is provided in the middle of the inner side of the door stop limiting plate, the step protrusion is located between the two door stop limiting plates, a section of the long stop block from its upper end to the upper part of the step protrusion is correspondingly slidably inserted in the limiting notch on the upper side, and a section of the long stop block from its lower end to the lower part of the step protrusion is correspondingly slidably inserted in the limiting notch on the lower side. In the embodiment, the distance between the two door stop limit plates is smaller than the length of the long stop block from its lower end to the lower part of the step protrusion, the thickness of the long stop block near the lower part of the step protrusion is greater than or equal to the inner and outer depth dimensions of the limit notch, the distance between the lower door stop limit plate and the square hole is smaller than the length of the long stop block passing through the lower door stop limit plate under the action of its own weight when the column body is erected, and the distance between the upper door stop limit plate and the square hole is greater than the length of the long stop block from its lower end to the upper part of the step protrusion.

[0016] Based on the above, the door stop locking structure includes a door stop locking plate, which is welded on the side beam and located in the middle upper part of the two column fixing plates. The door stop locking plate is provided with a plug-in hole that is compatible with the long stop block. The cross-sectional size of the door stop locking plate is compatible with the square hole, and the distance from the door stop locking plate to the V-shaped notch is the same as the distance from the square hole to the rotating pin shaft.

[0017] The present invention has substantial characteristics and progress over the prior art. Specifically, the present invention designs the column body as a U-shaped box structure, and welds two door stop limit plates on the column body, a door stop is slidably designed between the two door stop limit plates, and a square hole adapted to the door stop locking plate is provided on the lower side of the inner side plate of the column body, wherein a rotating pin is welded at the bottom of the column body, and two column fixing plates are welded on the side beam. The column fixing plate is provided with a V-shaped notch which is open on the outside and inclined upward, and the bottom of the V-shaped notch is a semicircular hole, and the door stop locking plate is welded on the side beam at the same time. In this way, when assembling the column, the two ends of the rotating pin are respectively placed in the two V-shaped notches, and the rotating pin automatically slides into the semicircular hole at the bottom of the V-shaped notch by relying on the dead weight of the column body, thereby playing the role of supporting the column body, so that the column body is rotated and erected upward and is tightly attached to the side beam, then the door The locking plate passes through the square hole on the column body correspondingly, and the door stop slides downward by its own weight, that is, the long block slides downward under the action of its own weight, and the lower end of the long block slides down and is inserted into the plug-in hole on the door stop locking plate, thereby locking the column and the side beam. Since the long block is a wedge-shaped block with a thick upper part and a thin lower part from its lower end to the lower part of the step protrusion, the long block can be tightly contacted with the door stop limit plate on the lower side under its own weight, so as to realize automatic locking of the column, and will not loosen or fall off during the operation of the semi-trailer, so that the column is firmly fixed and not loosened; when disassembling the column, it is only necessary to knock the step protrusion on the long block upward with a hammer to make the long block slide upward and withdraw the long block from the plug-in hole of the door stop locking plate, and then the column body is rotated downward by a certain angle, and then the column body is lifted upward, and the column can be disassembled, so that the column is quickly disassembled and convenient to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of assembling the utility model with a box plate and a side beam.

[0019] Figure 2 It is the front view of the utility model.

[0020] Figure 3 It is a left side view of the utility model.

[0021] Figure 4 It is an axial view of the utility model.

[0022] In the figure: 1. Column body; 2. Side beam; 3. Rotation pin; 4. Square hole; 5. Column fixing plate; 6. V-shaped notch; 7. Long block; 8. Step protrusion; 9. Door stop limit plate; 10. Door stop locking plate; 11. Box plate. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0024] like Figure 1-4 As shown, a self-locking semi-trailer column includes a column body 1, a column fixing structure, a door stop, a door stop limiting structure and a door stop locking structure;

[0025] The column body 1 is arranged vertically;

[0026] The column fixing structure is fixedly mounted on the side beam 2 and is used to fix and support the bottom of the column body 1;

[0027] The door stopper is slidably mounted on the column body 1 and is used to lock the column body 1 and the side beam 2 together;

[0028] The door stop limiting structure is fixedly arranged on the column body 1, and is used to limit the movement of the door stop on the column body 1;

[0029] The door stop locking structure is fixedly arranged on the side beam 2 and passes through the lower side of the column body 1 , and is used for engaging with the door stop to lock the column body 1 .

[0030] In this embodiment, the column body 1 is a U-shaped box structure with an open outside. A rotating pin 3 is welded between the bottom of the two side plates of the column body 1. The two ends of the rotating pin 3 respectively pass through the two side plates of the column body 1. A square hole 4 is provided on the lower side of the inner side plate of the column body 1 for the door stop locking structure to pass through.

[0031] In this embodiment, the column fixing structure includes two column fixing plates 5, which are welded to the side beam 2 at intervals on the left and right. The column fixing plates 5 are provided with a V-shaped notch 6 that is open on the outside and obliquely upward. The bottom of the V-shaped notch 6 is a semicircular hole. The column body 1 is vertically placed between the two column fixing plates 5, and the two ends of the rotating pin 3 are respectively supported in the semicircular holes at the bottom of the two V-shaped notches 6.

[0032] In this embodiment, the door stopper includes a vertically arranged long stopper 7, the inner side surface of the long stopper 7 is a plane, and a step protrusion 8 is integrally formed on the upper middle part of the outer side surface of the long stopper 7. The long stopper 7 from its lower end to the lower part of the step protrusion 8 is a wedge-shaped block that is thick on the top and thin on the bottom.

[0033] In this embodiment, the door stop limit structure includes two door stop limit plates 9 welded to the lower inner side of the column body 1 at an upper and lower interval. The lower door stop limit plate 9 is higher than the square hole 4. A limit notch with an inner opening is provided in the middle of the inner side edge of the door stop limit plate 9. The step protrusion 8 is located between the two door stop limit plates 9. The long stop block 7 is correspondingly slidably inserted in the upper limit notch from its upper end to the upper part of the step protrusion 8, and the long stop block 7 is correspondingly slidably inserted in the lower limit notch from its lower end to the lower part of the step protrusion 8. The distance between the two door stop limit plates 9 is less than the length of the long stop block 7 from its lower end to the lower part of the step protrusion 8, the thickness of the long stop block 7 near the lower part of the step protrusion 8 is greater than or equal to the inner and outer depth dimensions of the limiting notch, the distance between the lower door stop limit plate 9 and the square hole 4 is less than the length of the long stop block 7 passing through the lower door stop limit plate 9 under the action of its own weight when the column body 1 is erected, and the distance between the upper door stop limit plate 9 and the square hole 4 is greater than the length of the long stop block 7 from its lower end to the upper part of the step protrusion 8.

[0034] In this embodiment, the door stop locking structure includes a door stop locking plate 10, which is welded to the side beam 2 and located in the middle upper part of the two column fixing plates 5. The door stop locking plate 10 is provided with a plug-in hole adapted to the long stop block 7. The cross-sectional size of the door stop locking plate 10 is adapted to the square hole 4. The distance from the door stop locking plate 10 to the V-shaped notch 6 is the same as the distance from the square hole 4 to the rotating pin 3.

[0035] When assembling the column in this embodiment, the bottom of the column is placed between the two column fixing plates 5, so that the two ends of the rotating pin 3 are respectively placed in the two V-shaped notches 6, and then the column body 1 slides down by its own weight, thereby driving the rotating pin 3 to automatically slide into the semicircular hole at the bottom of the V-shaped notch 6, and the rotating pin 3 supports the column body 1, and then the column body 1 is rotated upward and erected and close to the side beam 2, then the door stop locking plate 10 passes through the square hole 4 on the column body 1 accordingly, and at the same time the door stop slides downward by its own weight, that is, the long stopper 7 slides downward under the action of its own weight, and the lower end of the long stopper 7 slides down and is plugged into the plug-in hole on the door stop locking plate 10, thereby fixing the column The step protrusion 8 on the long stopper 7 is locked with the side beam 2. Since the long stopper 7 is a wedge-shaped block with a thick upper part and a thin lower part from its lower end to the lower part of the step protrusion 8, the long stopper 7 can be tightly contacted with the door stop limit plate 9 on the lower side under its own weight, so as to realize automatic locking of the column, and it will not loosen or fall off during the operation of the semi-trailer, so that the column is firmly fixed and not loose. When removing the column, it is only necessary to knock the step protrusion 8 on the long stopper 7 upward with a hammer to make the long stopper 7 slide upward and withdraw the long stopper 7 from the plug-in hole of the door stop locking plate, and then rotate the column body 1 downward by a certain angle, and then lift the column body 1 upward to remove the column, so as to realize the rapid disassembly of the column and convenient disassembly and assembly.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A self-locking semi-trailer column, characterized in that: It includes a column body, a column fixing structure, a door stop, a door stop limiting structure and a door stop locking structure; The column body is arranged vertically; The column fixing structure is fixedly installed on the side beam and is used to fix the bottom of the supporting column body; The door stopper is slidably mounted on the column body and is used to lock the column body and the side beam together; The door stop limiting structure is fixedly arranged on the column body, and is used to limit the movement of the door stop on the column body; The door stop locking structure is fixedly arranged on the side beam and penetrates the lower side of the column body, and is used for engaging with the door stop to lock the column body.

2. The self-locking semi-trailer pillar according to claim 1, characterized in that: The column body is a U-shaped box structure with an open outside. A rotating pin is welded between the bottom of the two side plates of the column body. The two ends of the rotating pin pass through the two side plates of the column body respectively. A square hole is opened on the lower side of the inner side plate of the column body for the door stop locking structure to pass through.

3. The self-locking semi-trailer pillar according to claim 2, characterized in that: The column fixing structure includes two column fixing plates, which are welded to the side beams at intervals on the left and right. A V-shaped notch is opened on the column fixing plate, which is open on the outside and inclined upward. The bottom of the V-shaped notch is a semicircular hole. The column body is vertically placed between the two column fixing plates, and the two ends of the rotating pin are respectively supported in the semicircular holes at the bottom of the two V-shaped notches.

4. The self-locking semi-trailer pillar according to claim 3 is characterized in that: The door stopper comprises a vertically arranged long strip stopper, the inner side surface of the long strip stopper is a plane, a step protrusion is integrally formed on the middle upper side of the outer side surface of the long strip stopper, and a section of the long strip stopper from its lower end to the lower part of the step protrusion is a wedge-shaped block with a thick upper part and a thin lower part.

5. The self-locking semi-trailer pillar according to claim 4, characterized in that: The door stop limiting structure comprises two door stop limiting plates welded at an upper and lower interval on the lower side of the column body, the lower door stop limiting plate is higher than the square hole, a limiting notch with an inner opening is provided in the middle of the inner side edge of the door stop limiting plate, the step protrusion is located between the two door stop limiting plates, a section of the long stop block from its upper end to the upper part of the step protrusion is correspondingly slidably inserted in the limiting notch on the upper side, and a section of the long stop block from its lower end to the lower part of the step protrusion is correspondingly slidably inserted in the limiting notch on the lower side, and the two The distance between the door stop limit plates is smaller than the length of the long stop from its lower end to the lower part of the step protrusion, the thickness of the long stop near the lower part of the step protrusion is greater than or equal to the inner and outer depth dimensions of the limiting notch, the distance between the lower door stop limit plate and the square hole is smaller than the length of the long stop passing through the lower door stop limit plate under the action of its own weight when the column body is erected, and the distance between the upper door stop limit plate and the square hole is greater than the length of the long stop from its lower end to the upper part of the step protrusion.

6. The self-locking semitrailer pillar according to claim 4, characterized in that: The door stop locking structure includes a door stop locking plate, which is welded to the side beam and located in the middle upper part of the two column fixing plates. The door stop locking plate is provided with a plug-in hole adapted to the long stop block. The cross-sectional size of the door stop locking plate is adapted to the square hole, and the distance from the door stop locking plate to the V-shaped notch is the same as the distance from the square hole to the rotating pin shaft.

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